Dressings, systems, and methods for treating a tissue site with negative pressure are described. The dressing includes a manifold having a first surface and a second surface opposite the first surface, a first layer adjacent to the first surface, and a second layer adjacent to the second surface. The first layer and the second layer each are formed from a polymer film. A plurality of fluid restrictions are formed in the polymer film adjacent to at least the first surface. A first plurality of bonds is formed between the first layer and the second layer. The first plurality of bonds define separable sections of the manifold. A second plurality of bonds is formed between the first layer and the second layer. The second plurality of bonds define a plurality of openings.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/05 - specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
2.
WOUND THERAPY SYSTEM AND WOUND DRESSING WITH PH SENSOR
A wound therapy system having a wound dressing for treating a wound includes a sensor that measures a pH level at a wound area. The sensor has a circuit that includes a first electrode and one or more second electrodes. The first electrode has a changeable conductivity that changes according to a hydrogen ion concentration level. The one or more second electrodes are configured with a fixed conductivity that does not change with the hydrogen ion concentration level. The first electrode is coated with a porous protective membrane formed from a sulfonated and/or carboxylated copolymer.
A61F 13/05 - specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
3.
METHOD TO DYNAMICALLY MEASURE APPOSITION AND PATIENT LIMB MOVEMENT IN A NEGATIVE PRESSURE CLOSED INCISION DRESSING
A negative pressure wound therapy system includes at least one sensor coupled to a wound dressing for a wound of a patient, and a control circuit. The at least one sensor is configured to output an indication of a displacement of the wound dressing. The control circuit is configured to receive the indication of the displacement of the wound dressing, calculate a therapy parameter corresponding to the indication of the displacement, and output the therapy parameter.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61F 13/05 - specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
4.
DISTRIBUTED NEGATIVE PRESSURE WOUND THERAPY SYSTEM INCORPORATING AN ABSORBENT DRESSING AND PIEZO-ELECTRIC PUMP
A negative pressure wound therapy system includes a wound dressing, at least one pump fluidly coupled to the fluid interface, a pressure sensor fluidly coupled to the wound dressing, a control housing, and an electrical coupler. The wound dressing includes a sealing layer, an absorbent layer adjacent to the sealing layer, and a fluid interface attached to at least one of the sealing layer or the absorbent layer. The at least one pump is configured to apply negative pressure to the fluid interface to draw fluid from the wound dressing via the fluid interface. The pressure sensor is configured to detect a fluid pressure of the wound dressing. The control housing is remote from the wound dressing. The electrical coupler is configured to removably connect the control housing to the at least one pump.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Systems, apparatuses, and methods for instilling fluid to a tissue site in a negative-pressure therapy environment are described. Illustrative embodiments may include a pneumatically-actuated instillation pump that can draw a solution from a solution source during a negative-pressure interval, and instill the solution to a dressing during a venting interval. In one example embodiment, a system for providing negative-pressure and instillation to a tissue site may comprise a negative-pressure device and an instillation device. The negative-pressure device may comprise a negative-pressure source and a controller electrically coupled to the negative-pressure source. The instillation device may comprise a dosing valve having a dosing chamber including a dosing outlet configured to be fluidly coupled to a fluid port and a dosing inlet configured to be fluidly coupled to a source of instillation solution. The dosing valve may also have a working chamber including a biasing element operably engaged to the dosing chamber and configured to be fluidly coupled to the negative-pressure source. In some embodiments of the system, the instillation device may further comprise a wireless transceiver configured to communicate with the controller, and at least one sensor coupled to the wireless transceiver to provide a signal indicative of an operating condition of the dosing valve, and wherein the wireless transceiver is configured to communicate the at least one signal to the controller.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A negative pressure wound treatment (NPWT) system including a NWPT therapy unit and a wound dressing configured to overlay a wound bed. The NPWT system includes a first length of tubing comprising a first end and a second end, the first end of the first length of tubing coupled to the NWPT therapy unit and the second end of the first length of tubing having a first coupling half, as well as a second length of tubing having a first end and second end, the first end of the second length of tubing coupled to the wound dressing and the second end of the second length of tubing having a second coupling half. The NPWT system includes an inline filter comprising a sintered polymer and a superabsorbent material, and an inline coupling, wherein the inline coupling is configured to operably couple and de-couple the NPWT therapy unit and wound dressing.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/00 - Bandages or dressings; Absorbent pads
7.
WOUND THERAPY TUBESET SYSTEM FOR WOUND VOLUME ESTIMATION
A tubeset module includes one or more elements of a negative pressure wound therapy (“NPWT”) system, such as a valve, a calibrated leak, a pressure sensor, etc. The tubeset module may communicate with a controller of the NPWT system via a communications interface provided by the tubeset module. The communication between the tubeset module and the controller may be used to fully automate one or more processes involving the operation of the components of the NPWT system included in the tubeset module, allowing the NPWT system to, e.g. estimate a wound site volume, estimate a volume of fluid to be instilled, monitor wound healing progression, etc. without requiring any user interaction or involvement. The tubeset module may be defined by one or more housing elements. The tubeset module may be incorporated into any of the tubing, fluid canister, wound dressing and/or therapy device housing components of the NPWT system.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
8.
COMPOSITE DRESSINGS FOR IMPROVED GRANULATION AND REDUCED MACERATION WITH NEGATIVE-PRESSURE TREATMENT
Dressings for use in negative pressure therapy and methods of making the dressings are provided herein. The dressings may comprise at least two layers in a stacked configuration. The first layer may comprise a manifold layer and the second layer may comprise a silicone gel layer. The second layer may have perforations to form fluid restrictions that can open and close when used in negative pressure therapy. The perforated second layer may be formed by a first and a second curing step.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A dressing for treating a tissue site may include a base layer, a sealing member, a first and a second wicking layer, and an absorbent layer. The base layer may have a periphery surrounding a central portion and a plurality of apertures disposed through the periphery and the central portion. At least one of the apertures in the periphery may be positioned at an edge of the periphery, and may have an interior exposed at the edge. The sealing member and the base layer may define an enclosure. The first and the second wicking layer may each be disposed in the enclosure with the absorbent layer positioned between the first and the second wicking layer. Other dressings, systems, and methods are disclosed.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10.
NEGATIVE-PRESSURE WOUND THERAPY DRESSING WITH ZONE OF AMBIENT PRESSURE
Disclosed embodiments may relate to dressings configured to provide negative-pressure wound therapy to a tissue site, while simultaneously shielding a portion of the tissue site from the negative pressure. For example, dressing assembly embodiments may comprise an outer dressing configured for applying negative-pressure wound therapy to a tissue site, and an underlying isolation patch configured for use under the outer dressing. The isolation patch may be configured to seal the portion of the tissue site so that it does not experience the negative pressure. Additionally disclosed are other apparatus, dressings, systems, and methods.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/14 - Bandages or dressings; Absorbent pads specially adapted for the breast or abdomen
11.
SEMI-AUTOMATED SYSTEM FOR REAL-TIME WOUND IMAGE SEGMENTATION AND PHOTOGRAMMETRY ON A MOBILE PLATFORM
In one example embodiment, a wound imaging system includes a user interface, a computer processor, and an active contouring module. The user interface is configured to display an image of a wound acquired by the wound imaging system and selectively receive inputs from a user defining an initial perimeter of the wound. An active contouring module is configured to operate on the computer processor to receive the inputs defining the initial perimeter of the wound, identify features of the image on opposing sides of the initial perimeter of the wound, and identify an actual perimeter of the wound based on the initial perimeter of the wound and the identified features. The user interface is further configured to display, on the image of the wound, the actual perimeter of the wound as identified by the active contouring module and selectively receive inputs from the user to modify the actual perimeter of the wound.
A medical drape for use with a reduced pressure system for providing reduced pressure to a tissue site is described. In some embodiments, the drape may include a flexible film, and an adhesive layer coupled to the flexible film. The adhesive layer may include a first adhesive disposed on a first portion of the flexible film in a first pattern. The first adhesive can be configured to secure the flexible film proximate to the tissue site. The adhesive layer generally includes a second adhesive disposed on a second portion of the flexible film in a second pattern. The second adhesive can be configured to seal the flexible film proximate to the tissue site. The first pattern and the second pattern are preferably registered so that the first portion and the second portion are offset to cover substantially different portions of the flexible film.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A fluid delivery system, method, and apparatus for providing instillation therapy with a negative-pressure source is described. The apparatus includes a housing having an ambient chamber and a negative-pressure chamber fluidly isolated from each other. The apparatus also includes a moveable barrier disposed in the housing between the ambient chamber and the negative-pressure chamber. The moveable barrier is operable to move between a charge position and a discharge position in response to negative pressure. A fluid source is disposed in the negative-pressure chamber and is collapsible in response to movement of the moveable barrier to the discharge position. The apparatus also includes a fluid outlet in fluid communication with the fluid source, a negative-pressure port in fluid communication with the negative-pressure chamber and configured to be coupled to a negative-pressure source, and a vent formed in the housing and fluidly coupled to the ambient chamber.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61M 37/00 - Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
A treatment system for applying negative pressure therapy and fluid instillation treatment to a tissue site, particularly an abdominal tissue site, is disclosed. In some embodiments, the treatment system may include a dressing member, a plurality of fluid removal pathways, a fluid instillation matrix, a drape, a negative-pressure source, and a fluid instillation source. Instillation fluid may be delivered from the fluid instillation source to the tissue site through the fluid instillation matrix, and negative pressure may be communicated and fluid withdrawn from the tissue site through the plurality of fluid removal pathways.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 39/08 - Tubes; Storage means specially adapted therefor
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
An apparatus for treating a tissue site comprising a negative-pressure source configured to be fluidly coupled to the tissue site; an instillation source configured to be fluidly coupled to the tissue site; and a controller operatively coupled to the negative-pressure source and to the instillation source. The controller can be configured to operate the negative-pressure source and the instillation source to intermittently deliver negative pressure to the tissue site for a negative-pressure interval and deliver instillation fluid to the tissue site for an instillation interval. A purge volume of instillation fluid may be delivered to the tissue site at a purge frequency. In some examples, the purge volume may be delivered through the second fluid conductor and removed through the first fluid conductor during a negative-pressure interval.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
As an example, in some embodiments is a dressing that may comprise a manifold, a bioresorbable component, and a degradation-modulating component. The degradation-modulating component may cover two or more surfaces of the bioresorbable component. The degradation-modulating component may be further configured to modulate degradation of the bioresorbable component.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
A61L 15/26 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
A61L 15/42 - Use of materials characterised by their function or physical properties
A61L 15/62 - Hydrosoluble or hydrodegradable materials
A61L 15/64 - Use of materials characterised by their function or physical properties specially adapted to be resorbable inside the body
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Dressings are provided herein having a manifold and a biopolymer layer. The configuration and/or compressibility of the manifold and the biopolymer layer can allow for reduced tissue ingrowth and promote wound healing. Methods of making and using the dressings are also provided herein.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Disclosed embodiments relate to devices and systems for providing negative-pressure therapy, instillation, and/or pressure-sensing at a tissue site, and to methods of manufacturing such devices and systems. In some embodiments, a fluid bridge may comprise a first layer of foam with a plurality of supports extending from at least an inner surface, and a second layer. The first and second layers may be coupled together around the perimeter to form one or more enclosed fluid pathways, for example extending from a port to an aperture. In some embodiments, at least the first layer may be formed of closed-cell foam.
In some examples, provided is a fluid blockage device for use with a reduced-pressure source for treating a tissue site with reduced pressure. The fluid blockage device may be configured to preclude fluid communication through a port fluidly coupled to the reduced-pressure source when the fluid blockage device contacts a liquid. Other devices, systems, and methods are disclosed.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Some embodiments of a manifold pad may be configured to distribute reduced pressure relative to a tissue site and to provide a lateral contractive force relative to the tissue site. In some embodiments, the manifold pad may comprise a foam having a cell-structure forming ovoidal or ellipsoidal pores. In some embodiments, the manifold pad may be configured to preferentially contract radially or laterally upon application of negative pressure. For example, the manifold pad may be configured to be more resistant to collapse of the thickness of the manifold pad than to collapse radially or laterally. Other apparatus, dressings, systems, and methods are disclosed.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
21.
System and method for improving battery life of portable negative-pressure therapy through hysteresis control
A system comprises a negative-pressure source including a pump and an electric motor for maintaining negative-pressure at the wound and a pressure sensor for sensing a wound site pressure (WP). The system further comprises a system controller coupled to the first pressure sensor and the electric motor. The system controller maintains the wound site pressure (WP) within a hysteresis band by the application of power to the electric motor from a battery power source, based upon, at least in part a flow rate (FR) of fluid between the pump and the wound site as determined by the system controller. The hysteresis band including a maximum wound site pressure (WPMax) and a minimum wound site pressure (WPMin).
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
22.
DRESSING USING DIFFERENTIAL SURFACE FEATURES FOR USE IN COMPARTMENT SPACES
A dressing for treating a tissue site, particularly an abdominal or peritoneal site, is disclosed. In some embodiments, the dressing may comprise a tissue interface formed from a first layer of a liquid-impermeable material and a plurality of manifolding bubbles formed as part of the first layer. In some embodiments, the tissue interface may further comprise a second layer of a liquid-impermeable material, where the manifolding bubbles are formed as closed cells between the first layer and the second layer. The tissue interface may also include a third layer of liquid-impermeable material positioned adjacent to the second layer, where one or more fluid passageways may be formed between the second layer and third layer for delivering a therapeutic fluid to the tissue site.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/00 - Bandages or dressings; Absorbent pads
Dressing embodiments may include a first layer comprising a polymer film having a plurality of perforations, and a second layer comprising a manifold. In some embodiments, the second layer may have a length of at least 12 centimeters. In some embodiments, the second layer may have a thickness of between 7 millimeters and 10 millimeters. In some embodiments, the manifold may comprise a plurality of slits configured to provide conformability. The manifold may also be configured to maintain at least 80% of an applied negative pressure through the length.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Dressings and kits for use in wound therapy and negative-pressure therapy comprising a manifold layer comprising porous open-cell liquid permeable foam and a polymer composition The polymer composition comprises a polymer and an active agent, such as collagen and oxidized regenerated cellulose. The foam may be felted. Methods of making and using the dressings are also provided.
A61L 15/42 - Use of materials characterised by their function or physical properties
A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
25.
Extensible Conduit For The Communication Of Negative Pressure And Fluids
A conduit includes a first end configured to be fluidly coupled to a wound site, and a second end configured to be fluidly coupled to a canister. The conduit additionally includes a central lumen extending between the first end and the second end. The conduit further includes a male interlocking member on a first side of the conduit and a female interlocking member on a second side of the conduit. Both the first side and the second side extend along a length of the conduit between the first end and the second end. The female interlocking member is configured to receive the male interlocking member.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
26.
Dressing With Epithelialization And Scar Reduction Feature
Provided are systems, dressings, and methods suitable for treating a tissue site, such as an incision or linear wound, for example. The systems, dressings, and methods relate to a dressing assembly that may include a dressing bolster, a comfort layer, and a polymeric enhancement layer. The dressing bolster may include foam and may have a first side and a second side. A first side of the comfort layer may be coupled to the second side of the dressing bolster, and a first side of the polymeric enhancement layer may be coupled to the second side of the comfort layer. An opposing second side of the polymeric enhancement layer may be configured to directly contact the tissue site. Other systems, dressings, apparatuses, and methods are disclosed.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61L 15/42 - Use of materials characterised by their function or physical properties
A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
27.
NEGATIVE-PRESSURE TREATMENT WITH AREA STABILIZATION
An apparatus for applying negative pressure to a tissue site of a patient may include a tissue interface, a cover, an aperture in the cover, and a sealing member. The tissue interface may have an anatomical shape configured to cover the tissue site. The cover may be configured to cover the tissue interface. The aperture in the cover may be fluidly coupled to the tissue interface. The sealing member may be configured to seal the cover to the patient, wherein the cover and the sealing member are configured to cooperate to form a sealed chamber containing the tissue interface. The tissue interface may be coupled to a source of negative pressure, which can be delivered to the tissue interface for distribution to the tissue site. The source of negative pressure may be coupled to the cover of the apparatus.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
28.
Hand Dressing For Use With Negative Pressure Wound Therapy, Negative Pressure Wound Therapy System Comprising The Same, Method For Controlling A Pump Coupled To Said Dressing
A dressing includes a first manifold layer, a second manifold layer, a first barrier layer coupled to the first manifold layer, a second barrier layer coupled to the second manifold layer, a first fenestrated film layer coupled to the first manifold layer, and a second fenestrated film layer coupled to the second manifold layer. The first manifold layer and the second manifold layer are positioned between the first barrier layer and the second barrier layer. The first fenestrated film layer and the second fenestrated film layer are positioned between the first manifold layer and the second manifold layer.
A61F 13/10 - Bandages or dressings; Absorbent pads specially adapted for fingers, hands, or arms; Finger-stalls; Nail-protectors
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
29.
Release Liner For Simultaneous Use With Two Adhesives
A release liner, for example for use with a tissue cover having a first adhesive and a second adhesive, may comprise a first release agent adapted for the first adhesive and a second release agent adapted for the second adhesive. Typically, the first release agent is different from the second release agent, and the first release agent may be configured to interact with a first area of the cover having the first adhesive, and the second release agent may be configured to interact with a second area of the cover having the second adhesive. In some embodiments, the release liner may be multi-layered, for example with a first layer comprising the first release agent and a second layer comprising the second release agent. Some such embodiments may have perforations through the second layer of the release liner, with the first layer then being disposed with respect to the second layer in such a way as to expose the first release agent through the perforations in the second layer.
An apparatus for providing negative-pressure therapy may comprise a negative-pressure chamber and a pneumatically-actuated service timer, which can be used to indicate an expiration or other service condition of the apparatus. The apparatus may further comprise an actuator operable to engage a timer fluid with a migration medium. The timer fluid and the migration medium may be selected so that migration time through the migration medium corresponds to an expiration condition of the apparatus. The timer may also provide indicia of migration progress or termination.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
31.
Dressing With Integrated Pump And Releasably Coupled Pump Actuator
A dressing for treating a tissue site with negative pressure including a tissue interface, a cover, a chamber wall, and a base. The cover may be adapted to be sealed to epidermis proximate the tissue site. The chamber wall may define a pump chamber, wherein the pump chamber may be adapted to be fluidly coupled to the tissue interface. The base may extend from the chamber wall, wherein the base may be fluidly sealed to the cover. The dressing may include an intake valve and an exhaust valve fluidly coupled to the pump chamber. The pump chamber may be compressed to evacuate fluid from the pump chamber through the exhaust valve. The pump chamber may then be expanded to draw′ fluid through the intake valve from the tissue interface. This supplies a negative pressure to the tissue interface which may be adapted to distribute negative pressure across the tissue site.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Some examples of a dressing may include a drape coupled to a contact layer at an outer region of the dressing to define an interior space. A pressure indicating layer may be disposed within the interior space. The pressure indicating layer may include a plurality of perforations. An absorbent material may be disposed within the interior space.
Wound therapy dressings are provided. The wound therapy dressings may include at least one selectively transparent layer with a refractive index in a range wherein interaction between the selectively transparent layer and fluids from a treatment site switches the selectively transparent layer from a first, opaque state to a second, transparent state. Dressings that include multiple layers may include polymer films with a plurality of fluid restrictions, a manifold, a transparent polymer drape, and a hydrophobic polymer layer. The dressings may further include negative pressure therapy treatment input devices. A method of use wherein the dressings are used to monitor fluid flow, exudate, and maceration around a treatment site is also provided.
A dressing interface for connecting a negative-pressure source to a dressing may have a coupling member comprising an aperture, a first adhesive region having a first region peel strength, and a second adhesive region having a second region peel strength less than the first region peel strength. The dressing interface may further have a flange coupled to the coupling member, and a conduit housing coupled to the flange and extending through the aperture in the contact layer.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Systems, methods, and apparatuses for regulating the delivery of negative-pressure therapy are described. The system includes a negative-pressure source, an energy source, and a switch. The switch can include a first conductor electrically coupled to the negative-pressure source, a second conductor electrically coupled to the energy source, and a diaphragm having a first position electrically coupling the first conductor to the second conductor and a second position separated from the first conductor and the second conductor. The diaphragm is configured to move between the first position and the second position in response to a differential between a control pressure and a therapy pressure.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
H01H 35/34 - Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
H01H 35/26 - Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow - Details
H01H 35/40 - Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane
A61F 13/00 - Bandages or dressings; Absorbent pads
Systems, assemblies, and methods for providing negative-pressure therapy to a tissue site are described. The system can include an absorbent and a sealing layer configured to cover the absorbent. The system can also include a blister fluidly coupled to the absorbent. The blister may have a collapsed position and an expanded position. A first check valve may be fluidly coupled to the absorbent and the blister and configured to prevent fluid flow from the blister into the absorbent if the blister is moved from the expanded position to the collapsed position. A second check valve may be fluidly coupled to the blister and the ambient environment and configured to prevent fluid flow from the ambient environment into the blister if the blister is moved from the collapsed position to the expanded position.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Disclosed herein is a device which is intended to deliver and maintain reduced pressure to body surfaces for application of reduced pressure wound therapy (RPWT) also known as negative pressure wound therapy (NPWT). During application of this type of therapy, a substantially airtight seal is formed around a section of tissue to be treated. This seal is formed by a dressing which provides fluid communication from a section of tissue to a reduced pressure source. Disclosed herein is a dressing system which is configured to enhance usability and functionality of this dressing. First, the system may be configured to allow full rotation of the fluid communication conduit to the reduced pressure source along the axis substantially normal to the dressing. Second, the system may be configured to include a one-way valve to prevent backflow of any drainage fluids. Third, the system may be configured with transparent windows covered by opaque flaps to allow inspection through the dressing. Fourth, the system may be configured to include an indicator which visually makes clear whether reduced pressure is being applied or not. Fifth, the system is configured to minimize the profile of the dressing system.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
38.
WOUND DRESSINGS INCLUDING PVP-CITRIC ACID COPOLYMER
Dressings which may be useful in disrupting and/or preventing biofilm formation in a wound upon application are described, where the dressings of the present technology include a co-polymer of polyvinylpyrrolidone (PVP) and citric acid. Also disclosed herein methods employing such dressings as well as kits including such dressings.
A dressing includes a hydrophilic foam layer having a longitudinal central axis configured to overlay the incision, a drape coupled to an outwardly-facing side of the hydrophilic foam layer, a first row of superabsorbent material positioned on the outwardly-facing side of the hydrophilic foam layer, and a second row of superabsorbent material positioned on the outwardly-facing side of the hydrophilic foam layer. The first row and the second row are spaced laterally apart from, and on opposite sides of, the longitudinal central axis. The drape includes a first window aligned with the first row and a second window aligned with the second row. The first window and the second window include a film, different from the drape, configured to facilitate evaporation therethrough.
Some embodiments of a manifold pad may be configured to distribute reduced pressure relative to a tissue site and to provide a lateral contractive force relative to the tissue site. In some embodiments, the manifold pad may comprise a foam having a cell-structure forming ovoidal or ellipsoidal pores. In some embodiments, the manifold pad may be configured to preferentially contract radially or laterally upon application of negative pressure. For example, the manifold pad may be configured to be more resistant to collapse of the thickness of the manifold pad than to collapse radially or laterally. Other apparatus, dressings, systems, and methods are disclosed.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Dressings, systems and methods of treating a tissue site are described. A method of manufacturing the dressing can include providing a dressing material. The dressing material can have a surface configured to contact the tissue site. The dressing material can also have a plurality of pores. The method can further include applying a compressive force to the dressing material at an angle to the surface, the compressive force causing permanent deformation of the plurality of pores. Causing permanent deformation of the plurality of pores can comprise forming a plurality of compressed pores. Forming a plurality of compressed pores can include compressing the plurality of pores from a generally circular shape to a generally ovular shape.
The present disclosure provides non-silver instillation fluid compositions that are useful in negative pressure wound therapy systems involving instillation therapy. The non-silver instillation fluid compositions of the present technology are suitable for deep tissue delivery and effectively reduce bio-film formation without the need to open a closed wound.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A wound dressing comprising: a backing sheet; a layer of pressure-sensitive adhesive on the backing sheet; an island of absorbent material having smaller area than the backing sheet and applied onto a central region of the backing sheet so as to leave a margin of adhesive- coated backing sheet around the absorbent material, and an apertured wound facing layer applied over the absorbent material and adhered to the backing sheet around said island by said pressure-sensitive adhesive, wherein the apertured wound facing layer comprises an apertured substrate having a coating of a silicone gel on the wound facing surface thereof, the open area of the apertured wound facing layer is from about 5% to about 75%, and the apertured wound facing layer comprises apertures having an open area of from about 2 mm2 to about 100 mm2.
A61F 13/15 - Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
44.
ENCAPSULATION OF ANTIMICROBIAL AGENTS FOR ADVANCED WOUND DRESSINGS
The present disclosure relates generally to wound dressing compositions that include microcapsules, where the microcapsules include one or more agents are described herein. The wound dressing compositions includes a mixture of a collagen, an oxidized regenerated cellulose (ORC), and a microcapsule that includes at least one agent. Also disclosed herein are kits including the wound dressing compositions of the present technology, and instructions for use.
A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
A dressing or wound filler comprising a laminate structure of film materials. In one example embodiment, a dressing may include a first layer comprising a first film, a second layer adjacent to the first layer and comprising a second film, and a third layer comprising a material having closed cells. The first layer may further include a plurality of fluid restrictions. The second layer may include blisters and apertures to allow fluid transfer through the second film. The third layer may include closed cells and apertures between the closed cells to allow fluid transfer through the third layer. The dressing may further include a fourth layer adjacent to the third layer opposite the second layer, which may include a fourth film having blisters and apertures. The dressing may also include a fifth layer, which may be adjacent to the fourth layer opposite the third layer. The fifth layer may include a film and a second plurality of fluid restrictions.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Dressings, systems, methods for treating a tissue site, and methods for manufacturing a dressing are described. A dressing material can be provided. The dressing material can be felted to a first felting level, and localized portions of the dressing material can be felted to a second level. The localized portions can be a plurality of debridement cavities disposed in a contact surface. A tissue interface can have a first side, a second side, and a first thickness from the first side to the second side. A plurality of blind apertures can be disposed in the first side, each of the blind apertures having a second thickness from the first side to the second side. The tissue interface can have a first density at the first thickness and a second density at the second thickness.
Disclosed embodiments may include dressings having a rolled configuration which may reduce the footprint of the dressing, for example during packaging, shipping, and/or storage, and a usage configuration which may be unrolled for application to and usage in providing negative-pressure therapy on a tissue site. The dressing may be configured so that rolling does not degrade the dressing. Dressing embodiments may have various shapes and/or rolled configurations. Additionally disclosed are other apparatus, dressings, systems, and methods.
Some examples of a dressing assembly for treating an incision at a residual limb after an amputation may include a dressing bolster and a sealing member. A portion of the dressing bolster may be configured to face the residual limb and to support both a hemispherical portion and a cylindrical portion of the residual limb. The sealing member may be configured to cover at least the dressing bolster and to create a sealed space containing the dressing bolster. Other dressings, apparatus, systems, and methods are disclosed.
A system for instilling at least two tissue sites is described. The system can include a first dressing, a second dressing, and a bridge. The bridge can be configured to fluidly couple the first dressing and the second dressing. The bridge can be further configured to be fluidly coupled to an instillation source. The system can include a fluid restrictor coupled to the bridge between the instillation source and the first dressing. The fluid restrictor can be operable to selectively permit fluid flow to the first dressing.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/00 - Bandages or dressings; Absorbent pads
Systems, methods, and dressing are presented for treating a tunnel wound on a patient. In one instance, a reduced-pressure, tunnel-wound dressing includes a longitudinal core member formed from a closed-cell foam that is surrounded by a first longitudinal concentric member formed from a manifolding material. When subjected to reduced pressure, the longitudinal core member expands and the first longitudinal concentric member compresses. These actions create intimate contact between the tunnel wound and the dressing, oppose collapse of the tunnel, and when reduced pressure is removed provide clearance to remove the dressing. Other embodiments are presented.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A method of manufacturing a wound dressing includes providing a first substrate layer, distributing superabsorbent particles on a first side of the first substrate layer, coupling a second substrate layer to the first side of the first substrate layer such that the superabsorbent particles are positioned between the first substrate layer and the second substrate layer, creating a plurality of holes through the first substrate layer and the second substrate layer, and covering borders of the plurality of holes with a sealant configured to prevent movement of the superabsorbent particles into the plurality of holes.
An apparatus for providing instillation and negative pressure therapy to a tissue site may include a first port having a first fluid path and a second fluid path, a second port having a third fluid path, a third port having a fourth fluid path and a fifth fluid path, and a fourth port having have a sixth fluid path. The second fluid path can be independent from the first fluid path and the fifth fluid path can be independent from the fourth fluid path. The apparatus may fluidly couple the first fluid path and the fourth fluid path, the second fluid path and the sixth fluid path, and the third fluid path and the fifth fluid path. The first port and the third port may each be configured to receive a multi-lumen conduit. The second port and the fourth port may each be configured to receive a single lumen conduit.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A negative pressure wound therapy (NPWT) system includes a canister and a therapy device. The canister includes one or more air inlets and one or more passageways extending through the canister. The therapy device includes a negative pressure pump and a fan. The negative pressure pump is configured to draw a negative pressure at a wound. The fan is configured to operate to draw a flow of air into the one or more air inlets of the canister, through the one or more passageways extending through the canister, and vented out from a passageway of the therapy device to facilitate active evaporation at the canister.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Dressings are provided herein having a manifold and a biopolymer layer. The configuration and/or compressibility of the manifold and the biopolymer layer can allow for reduced tissue ingrowth and promote wound healing. Methods of making and using the dressings are also provided herein.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Disclosed embodiments may relate to dressings configured to provide negative-pressure wound therapy to a tissue site, while simultaneously shielding a portion of the tissue site from the negative pressure. For example, dressing assembly embodiments may comprise an outer dressing configured for applying negative-pressure wound therapy to a tissue site, and an underlying isolation patch configured for use under the outer dressing. The isolation patch may be configured to seal the portion of the tissue site so that it does not experience the negative pressure. Additionally disclosed are other apparatus, dressings, systems, and methods.
A61F 13/14 - Bandages or dressings; Absorbent pads specially adapted for the breast or abdomen
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Dressings, systems, and methods for cleansing a tissue site in a negative-pressure therapy environment are described. A dressing can have a first layer formed from a first polymer film having a plurality of fluid restrictions, a second layer formed from a second polymer film, and a manifold disposed between the first layer and the second layer. A plurality of bonds between the first layer and the second layer can define separable sections of the first layer, the second layer, and the manifold. A tissue cleansing interface formed from collagen and oxidized regenerated cellulose can be disposed adjacent to the plurality of fluid restrictions in at least one of the separable sections.
A61L 15/32 - Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin
A61L 15/42 - Use of materials characterised by their function or physical properties
B32B 1/00 - Layered products essentially having a general shape other than plane
A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
57.
HAND-SPECIFIC DRESSING FOR NEGATIVE PRESSURE AND INSTILLATION WOUND THERAPY
A dressing includes a first film coupled to a second film. The first film includes a substantially air-impermeable polyurethane. The second film includes a plurality of structures formed on a surface of the second film facing the first film. The structures provide an open volume between the first film and the second film. The open volume allows fluid to flow between the first film and the second film.
A61F 13/10 - Bandages or dressings; Absorbent pads specially adapted for fingers, hands, or arms; Finger-stalls; Nail-protectors
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
58.
EXTREMITY DRESSING WITH COLLAPSIBLE CUFF FOR NEGATIVE PRESSURE WOUND THERAPY
A negative pressure wound therapy system includes a pump and a dressing fluidly communicable with the pump. The dressing includes a treatment portion configured to receive an extremity of a patient and a cuff positioned at a first end of the treatment portion and configured to extend around the extremity of the patient. The pump is operable to remove air from an interior of the cuff. The cuff is configured to contract circumferentially when the air is removed from the cuff.
A therapy system includes a dressing configured to receive an extremity of a patient. The therapy system also includes a cuff coupled to the dressing and configured to extend around the extremity when the extremity is received by the dressing. The cuff includes a moisture-activated hydrogel positioned on a patient-facing surface of the cuff. The moisture-activated hydrogel is configured to gel in response to exposure to moisture to provide a seal between the cuff and the extremity.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61F 13/10 - Bandages or dressings; Absorbent pads specially adapted for fingers, hands, or arms; Finger-stalls; Nail-protectors
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61L 15/60 - Liquid-swellable gel-forming materials, e.g. super-absorbents
A61L 31/14 - Materials characterised by their function or physical properties
A61M 27/00 - Drainage appliances for wounds, or the like
Some examples of a dressing may include a drape, a first layer disposed on a side of the drape, and a second layer disposed on a side of the first layer opposite the drape. The first layer may include an uncured silicone gel. Further, the second layer may include a cured silicone layer. A viscosity of the first layer may be greater than a viscosity of the second layer.
A system for providing negative pressure therapy at a tissue site. The system comprises: i) a primary therapy controller; ii) a first dressing interface configured to be controlled by the primary therapy controller and to provide at least one of first negative pressure therapy or first instillation therapy at the tissue site; iii) a secondary therapy controller configured to be controlled by the primary therapy controller; and iv) a second dressing interface configured to be controlled by the secondary therapy controller and to provide at least one of second negative pressure therapy or second instillation therapy at the tissue site.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/00 - Bandages or dressings; Absorbent pads
A wound dressing includes a patient interface layer having openings formed therethrough, an intermediate layer comprising at least one of an absorbent layer and a manifold layer disposed atop the patient interface layer, a drape layer disposed above the intermediate layer and comprising an adhesive material disposed at least partially on the drape layer, and an activation layer disposed on at least a portion of the adhesive material and comprising a dissolvable material.
Disclosed embodiments may relate to dressings for wounds and other tissue sites, and specifically to dressings having one or more UV lights configured to provide disinfection under the dressing while the dressing is in place on the tissue site. For example, the dressing may have a plurality of UV-C light sources. In some embodiments, the dressing may also comprise an optically transparent adhesive layer and/or manifold layer, for example allowing UV light to be diffused across the tissue site.
A dressing for an extremity can include a manifold layer, a barrier layer, and a fenestrated layer. The barrier layer can be disposed on one side of the manifold layer. The fenestrated layer can be disposed on an opposite side of the manifold layer. The fenestrated layer can include multiple openings, The multiple openings can include multiple slits and multiple slots. The slits are positioned on the fenestrated layer near a negative pressure connection point and the slots are positioned on the fenestrated layer distal from the negative pressure connection point.
A61F 13/10 - Bandages or dressings; Absorbent pads specially adapted for fingers, hands, or arms; Finger-stalls; Nail-protectors
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A wound therapy system (100) includes a dressing (102) sealable over a wound (114), a conduit (400) comprising a first inner diameter, coupled to the dressing, and fluidly communicable with the wound space, and a canister (106) fluidly communicable with the conduit. A therapy unit (108) is coupled to the canister and includes a pump (122), a sensor (123) configured to measure a pressure, a valve (126) controllable between an open position and a closed position, and a control circuit (132). The control circuit is configured to control the pneumatic pump to remove air to establish a negative pressure, control the valve to repeatedly alternate between the open closed positions to allow a controlled rate of airflow through the valve, receive measurements of the pressure from the sensor, and determine a volume of the wound space based on the pressure measurements. A portion of the conduit comprises a second inner diameter that is less than the first inner diameter.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61B 5/107 - Measuring physical dimensions, e.g. size of the entire body or parts thereof
66.
MULTIPLE FLUID PATHWAY CONNECTOR WITH FOAM SUPPORTS
Disclosed embodiments relate to devices and systems for providing negative-pressure therapy, instillation, and/or pressure-sensing at a tissue site, and to methods of manufacturing such devices and systems. In some embodiments, a fluid bridge may comprise a first layer of foam with a plurality of supports extending from at least an inner surface, and a second layer. The first and second layers may be coupled together around the perimeter to form one or more enclosed fluid pathways, for example extending from a port to an aperture. In some embodiments, at least the first layer may be formed of closed-cell foam.
The present disclosure relates generally to wound dressing compositions that include at least one type of microcapsule comprising one or more biocompatible markers. Such wound dressing compositions may be used to detect protease levels in a wound bed. Methods of using the wound dressing compositions for treating wounds and for selecting patients for a therapeutic regimen, as well as kits for use in practicing the methods are also provided.
The present disclosure relates generally to wound fillers that may include two or more bio-resorbable film sheets adjoined in a manifold configuration that may be used in the therapy of deep wounds and for facilitating wound healing. Kits for use in practicing the methods are also provided.
A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
A61L 15/32 - Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin
A61L 15/42 - Use of materials characterised by their function or physical properties
A61L 15/64 - Use of materials characterised by their function or physical properties specially adapted to be resorbable inside the body
A dressing for treating a tissue site with negative pressure may comprise a cover having an adhesive, a manifold, a perforated polymer film comprising micropores, and a perforated silicone gel having a treatment aperture. The cover, the manifold, the perforated polymer film, and the silicone gel may be assembled in a stacked relationship with the cover and the perforated silicone gel enclosing the manifold. The perforated polymer film may be at least partially exposed through the treatment aperture, and at least some of the adhesive may be exposed through the perforated silicone around the treatment aperture.
A dressing for treating a tissue site may comprise a tissue interface having at least a first layer and a second layer. The first layer may comprise a polymer film having a first singulation border, and the second layer may comprise a manifold having an edge and a second singulation border. The second singulation border may be offset from the first singulation border such that the first singulation border is closer to the edge of the manifold than the second singulation border. The first singulation border and the second singulation border can be configured to allow first portions of the polymer film and the manifold to be separated from second portions of the polymer film and the manifold. In some examples, the polymer film may form a margin around the edge of the manifold after separation.
Systems, apparatuses, and methods for providing negative pressure with instillation fluids to a tissue site are disclosed. Some embodiments are illustrative of an apparatus or system for delivering negative-pressure and/or therapeutic solution of fluids to a tissue site, which can be used in conjunction with sensing properties of fluids extracted from a tissue site and/or instilled at a tissue site. For example, a system may comprise a tissue interface adapted to be coupled to a source of instillation fluid and a dressing interface having a therapy cavity that includes a pH sensor to provide data indicative of acidity/alkalinity at the tissue site. Such apparatus may further comprise algorithms for processing such data for providing information relating to the progression of healing of wounds at the tissue site.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A dressing for a wound includes a drape, an absorbent core, and a wicking member. The drape can be configured to sealingly couple with a patient's skin surrounding the wound. The drape may enclose an inner volume of the dressing. The absorbent core layer may be positioned within the inner volume of the dressing. The wicking member is positioned within the inner volume, wherein the wicking member extends from an underside of the absorbent core layer to the drape. The indicator may be configured to fluidly couple with the wicking member through the drape and receive fluid from the wicking member. The indicator may be configured to provide a visual wound status indication in response to receiving fluid from the wound through the wicking member.
The present disclosure relates generally to wound inserts that may include an outer layer and an inner core of biopolymers that may be used in the therapy of tunneling wounds and for facilitating wound healing. Kits for use in practicing the methods are also provided.
The present technology generally relates to a biomaterial that includes a thiolated biopolymer and one or more agents that include growth factors, peptides, or combinations thereof, where the one or more agents are conjugated to the thiolated biopolymer. Also disclosed herein are wound dressings that include the biomaterial of the present technology, methods of treating a wound upon application of the wound dressing, and kits including the wound dressing and instructions for use.
This disclosure describes a wound sealing film containing a first layer having a first surface and a second surface, said first layer contains a first polymer composition, a second layer having a first surface and a second surface, said second layer contains a polymeric gel, and a third layer having a first surface and a second surface, said third layer contains an adhesive, wherein the second layer is positioned between the first layer and the third layer, method of making and using the wound sealing film.
Dressings, systems, and methods for treating a tissue site with negative pressure are described. The dressing includes a foam having a foam thickness from a first side of the foam to a second side of the foam, and a plurality of holes extending through the foam from the first side to the second side. The dressing also includes a film having a film thickness and a plurality of perforations extending through the film. A plurality of welds couple the film to the first side of the foam, each of the plurality of welds being separated from the plurality of holes. Other dressings include a contact layer having a plurality of perforations extending through the contact layer, and a plurality of tissue disruption members coupled to the contact layer. The tissue disruption members are spaced apart from each other.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A pump system and methods for operating the same are described. The pump system includes a first pump chamber and a second pump chamber. A valve is fluidly coupled to the first pump chamber and the second pump chamber. The valve is operable to fluidly couple the first pump chamber and the second pump chamber in a series configuration and in a parallel configuration.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
F04B 43/02 - Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups
78.
CONFORMABLE DRESSING FOR NEGATIVE-PRESSURE TREATMENT OF LARGE AREAS
Dressing embodiments may include a first layer comprising a polymer film having a plurality of perforations, and a second layer comprising a manifold. In some embodiments, the second layer may have a length of at least 12 centimeters. In some embodiments, the second layer may have a thickness of between 7 millimeters and 10 millimeters. In some embodiments, the manifold may comprise a plurality of slits configured to provide conformability. The manifold may also be configured to maintain at least 80% of an applied negative pressure through the length.
Dressings, systems, and methods for treating a tissue site are described. The dressing includes a tissue interface having a first portion having a first surface, and a second portion having a second surface. The second portion being opposite the first portion and the first surface and the second surface facing opposite directions. The first portion and the second portion are separable. A first plurality of holes extends into the first portion from the first surface, and a second plurality of holes extends into the second portion from the second surface.
Dressings, systems, and methods for treating a tissue site are described. The dressing includes a contact layer having a first side and a second side. The first side of the contact layer configured to be positioned adjacent to the tissue site. The contact layer has a plurality of holes extending through the contact layer from the first side to the second side. The dressing includes a cover layer having a first side and a second side. The first side of the cover layer is coupled to the contact layer. The dressing also includes at least one retainer layer removably coupled to the second side of the cover layer.
A dressing may include a manifold and a spacer fabric. The manifold may have a first side configured to face the tissue site, a second side opposite the first side, a thickness between the first side and the second side, a first portion, and a second portion. The spacer fabric may extend between the first portion and the second portion and may comprise a first layer coupled to the first portion, a second layer coupled to the second portion, and a spacer layer extending between the first layer and the second layer. The first layer and the second layer may be perpendicular to the first side of the manifold. The dressing may be configured to contract more in a first direction than in a second direction, wherein the first direction is perpendicular to an extension direction of the spacer fabric. Other dressings, apparatus, systems, and methods are disclosed.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61M 27/00 - Drainage appliances for wounds, or the like
A dressing for treating tissue may be a composite of dressing layers, including a contact layer, a manifold layer, and an adhesive drape. The manifold layer may include one or more layers of felted open-cell foam in some examples. The manifold layer may be relatively thin to reduce the dressing profile and increase flexibility, which can enable it to conform to difficult geometry and other tissue sites under negative pressure. The dressing may have a length and a width less than the length. The manifold layer may include a population of holes extending at least partially therethrough, wherein the holes may be configured to promote anisotropic contraction of the dressing parallel to its width. The population of holes may have a circular, ovoid, triangular, square, hexagonal, irregular, or amorphous shape. The dressing may be a bolster that may anisotropically contract to provide a closing force to a linear wound.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
83.
TISSUE INTERFACE FOR NEGATIVE-PRESSURE AND INSTILLATION THERAPY
Apparatuses, systems, and methods for treating a tissue site are described. The apparatus includes a dressing for treating a tissue site. The dressing includes a contact layer having a first side and a second side configured to be positioned adjacent to the tissue site. A plurality of holes extend through the contact layer from the first side to the second side. The dressing also includes a retainer layer coupled to the first side of the contact layer.
A cutting template for use with a negative pressure wound therapy system includes a substantially rigid body. The body includes a top surface, a bottom surface, a height, and a recess. The top surface is configured to engage a drape layer. The bottom surface is configured to engage a dressing layer. The height is defined between the top surface and the bottom surface. The height is configured to create a gap between the drape layer and the dressing layer. The recess is disposed substantially about a perimeter of the body. The recess is configured to receive an edge of a cutting tool so that an opening is formed in the drape layer when the edge is traversed about the perimeter.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61B 46/20 - Surgical drapes specially adapted for patients
An assembly includes a drape substantially sealable over a wound bed and a trackpad configured to couple a tube to the drape and allow the tube to provide suction to the wound bed. The assembly also includes a vent opening in the drape, a filter coupled to the drape and communicating with the vent opening, a cover coupled to the drape and movable between a first position to cover the vent opening and filter and a second position to uncover the vent opening and the filter, and a fluid indicator coupled to the drape and operable to provide a visual indication that fluid build-up is present in the wound bed.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/00 - Bandages or dressings; Absorbent pads
This disclosure describes a wound sealing film containing a first layer having a first surface and a second surface, said first layer contains a first polymer composition, a second layer having a first surface and a second surface, said second layer contains an adhesive, and a third layer having a first surface and a second surface, said third layer contains a polymeric gel, wherein the second layer is positioned between the first layer and the third layer, method of making and using the wound sealing film. In some aspects, a wound sealing film can contain a first layer containing a first polymer composition, and a combined layer containing a polymeric gel and an adhesive.
Methods, devices, kits, and systems for treating at tissue site including, for example, administering negative pressure therapy to a tissue site are described. The methods, devices, kits, and systems can include delivery devices for delivering a flowable material to a tissue site. The flowable material can be delivered as a first fiber to form a tissue dressing material at the tissue site and the flowable material can be delivered as a second fiber to form a cover at the tissue site.
This disclosure describes devices, systems, and methods related to therapy devices that are operable in multiple operating modes. An exemplary therapy device is configured to be coupled to a patient and includes a stimulation generator and a controller coupled to the stimulation generator. The controller is configured to transition the stimulation generator from operating in a first operating mode to operating in a second operating mode responsive to determining activity of the patient.
A61N 1/36 - Applying electric currents by contact electrodes alternating or intermittent currents for stimulation, e.g. heart pace-makers
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
89.
OXYGENATED HEMOGLOBIN AND APPARATUSES, SYSTEMS, AND METHODS THEREFORE
This disclosure describes devices, systems, and methods related to oxygenated hemoglobin, the generation thereof, and the use thereof. An exemplary oxygenated hemoglobin therapy system includes an oxygen source configured to provide oxygen and a hemoglobin source configured to provide topical hemoglobin. The therapy system may also include a mixer which has a first inlet, a second inlet, and an outlet The mixer is configured to mix the oxygen and the topical hemoglobin to form a mixture and to provide the mixture to a dressing via the outlet. The therapy system may further include the dressing. The oxygenated hemoglobin therapy systems described herein are suitable for use in medical devices, such as bandages, drapes, dressings, and wound closures.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61M 35/00 - Devices for applying media, e.g. remedies, on the human body
90.
DRAPES WITH REGIONS WITH HIGHER ADHESIVE PROPERTIES
This disclosure describes devices, systems, and methods related to dressings with regions with different adhesive properties, and manufacture and use thereof. An illustrative dressing includes a first region including a first adhesive material. The first adhesive material has a first tackiness. The dressing further includes at least a second region including a second adhesive material. The second adhesive material has a second tackiness in a first phase and a third tackiness in a second phase. The third tackiness is greater than the second tackiness. The first adhesive material is configured to maintain the first tackiness when the second adhesive material in the second phase.
The present disclosure relates generally to wound dressing compositions and reduced-pressure wound dressing composition including fenestrated substrates and methods of using the same to reduce the pressure drop observed during negative pressure wound therapy (NPWT). Kits for use in practicing the methods are also provided.
Provided herein are systems and methods for controlling, inducing, and indicating adhesive deactivation of adhesive drape systems. One aspect provides a system comprising a drape, a photosensitive adhesive layer, and a release agent, where the system is adapted to be coupled to a tissue site and released therefrom after exposure to an external stimulus, such as light. The system may have one or more photosensitive pigment areas that provide a visual indication based on exposure to the light. Another aspect provides a method for controlling the adhesion of a drape by application of a low-tack substance to one or more areas of a drape adhesive. The low-tack substance may be configured to produce a visual indication to distinguish areas where the low-tack substance has been applied. Such systems and methods enable a user to control properties of the drape adhesive and determine the various adhesive states via a visual indication.
Systems, methods, and apparatuses for storing fluid in a negative-pressure environment are described. For example, a fluid storage pouch can include a first pouch wall and a second pouch wall having an exterior edge of the second pouch wall coupled to an exterior edge of the first pouch wall to form a chamber. A first port is fluidly coupled to the chamber, and a second port is fluidly coupled to the chamber. A fluid storage media is disposed in the chamber. A fluid distributor is disposed adjacent to the fluid storage media, the fluid distributor providing a plurality of tortuous pathways between the first port and the second port.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
94.
DRESSING DESIGN INCORPORATING FORMED 3D TEXTILE FOR THE DELIVERY OF THERAPEUTIC NEGATIVE PRESSURE AND COMPRESSIVE FORCES TO A TREATMENT SITE
A system for applying negative pressure to a joint positioned in a treatment area. The system includes a negative pressure dressing. The negative pressure dressing includes a compressive layer and a sealing layer. The compressive layer includes a first surface and a second, treatment area-facing. The compressive layer further includes a first elongated portion configured to be positioned proximate the joint. The first elongated portion includes a first end and a second end. The compressive layer further includes a second elongated portion spaced from the first elongated portion and configured to be positioned proximate the joint. The second elongated portion includes a first end and a second end. The compressive layer further includes an interconnecting portion extending between the first elongated portion and the second elongated portion. The interconnecting portion is configured to overlie at least a portion of the joint. The compressive layer further includes a plurality of channels formed in the first surface and extending proximate the second surface. The plurality of channels is formed in at least one of the first end and the second end of the first elongated portion and at least one of the first end and the second end of the second elongated portion. The sealing layer is configured to form a seal around a perimeter of the negative pressure dressing.
A treatment system includes an dressing having a decompression layer and an occlusive layer that secures the dressing about a treatment site, and defines a treatment chamber within which the decompression layer is positioned. Operation of an air displacement device fluidly coupled to the chamber causes the decompression layer to compress away from the tissue site, resulting in a pulling force being imparted onto the treatment site. This decompression of the tissue site increases the perfusion of blood and other fluids, and advantageously may reduce swelling at the treatment site. To increase the degree of lifting of the treatment site, the decompression layer is advantageously constructed to exhibit a parallel plate effect during use of the treatment system. For example, the decompression layer is constructed having a center of stiffness located closer to an outwardly-facing surface of the decompression layer than a tissue-facing surface of the decompression layer.
A manifold for use with a dressing for treating an area around an extremity of a patient may include a concave recess positioned at a first end of the manifold. A fold axis may bisect the concave recess and extend from the first end of the manifold to a second end of the manifold. A first portion of the manifold may extend orthogonal to the fold axis toward a first side of the manifold, and a second portion of the manifold may extend orthogonal to the fold axis toward a second side of the manifold opposite to the first side. The fold axis may be configured to extend lengthwise along the extremity. Additionally disclosed are other apparatus, dressings, systems, and methods.
A dressing may include first layer and a second layer coupled to the first layer. The first layer may comprise a polymer film having a plurality of perforations through the polymer film that are configured to expand in response to a pressure gradient across the polymer film. The second layer may comprise open-cell foam having a density in a range of about 2.6 to about 16.0 lb/ft3 and a free volume in a range of about 9% to about 45%. A cover comprising a polymer film may be disposed adjacent to the second layer.
A soft-sided or flexible storage pouch may be used with a negative-pressure therapy system to receive and store fluids and exudate from a tissue site. The flexible storage pouch may include an envelope formed from one or more polymer films. A serpentine manifold and absorbent layers disposed between layers of the serpentine manifold may be inside the envelope. The pouch may have an inlet fluidly coupled to a tissue site and an outlet fluidly coupled to a negative-pressure source. The serpentine manifold may provide a tortuous fluid path from the inlet to the outlet that can increase or maximize fluid absorption by the absorbent layers. In some embodiments, one or more exudate barriers, such as baffles, may be included. The baffles may be disposed between the layers of the serpentine manifold and may aid in directing the flow of fluid along the tortuous fluid path of the manifold.
A61F 13/00 - Bandages or dressings; Absorbent pads
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A soft-sided or flexible storage pouch may be used with a negative-pressure therapy system to receive and store fluids and exudate from a tissue site. The flexible storage pouch may include an envelope formed from one or more polymer films. The pouch may comprise a storage compartment configured to receive and store liquid fluid or exudate from a tissue site, and a manifold compartment configured to manifold gaseous fluid from the storage compartment to a negative-pressure source. In some embodiments, the manifold compartment may at least partially surround the storage compartment. One or more filters may be disposed in various locations between the storage compartment and the manifold compartment. The filters may be configured to allow the flow of gas from the storage compartment to the manifold in any orientation of the pouch, but may reduce or prevent the flow of liquid from the storage compartment to the manifold.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/00 - Bandages or dressings; Absorbent pads
100.
DRESSING INTERFACE CONFIGURED TO PROVIDE NEGATIVE-PRESSURE TREATMENT WITHIN FLOWABLE MANIFOLD
In administering negative-pressure therapy to a tissue site, a dressing typically may be applied to the tissue site. In some embodiments, at least the manifold portion of the dressing may be formed using flowable materials. Such alternative methods of applying a manifold may be better utilized with a dressing interface that is specifically configured for use with flowable manifold materials. For example, the dressing interface may have a distal end configured for use within the flowable manifold and/or may be configured to simultaneously provide negative pressure in more than one direction and/or at more than one level.
A61M 1/00 - Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
A61F 13/00 - Bandages or dressings; Absorbent pads
A61L 15/60 - Liquid-swellable gel-forming materials, e.g. super-absorbents
