The present invention discloses a wound dressing and the method of manufacturing. The wound dressing is a knitted fabric including of a fluffy layer of gel-forming fibers and a backing layer of non-gel-forming fibers. The backing layer includes a plain fabric of the non-gel-forming fibers. The gel-forming fibers are knitted onto the backing layer, a middle part of the gel-forming fibers are held in the backing layer, and two ends of the gel-forming fibers project against the backing layer. The length of the middle part of the gel-forming fibers is no more than the length of one loop of the non-gel-forming fibers, and the length of each of the two ends of the gel-forming fibers is between 1-100 mm.
ANTIMICROBIAL FIBER COMPRISING SILVER, FABRIC AND WOUND DRESSING COMPRISING THE ANTIMICROBIAL FIBER, AND METHODS FOR MANUFACTURING THE FIBER, THE FABRIC, AND THE WOUND DRESSING
A wound dressing, including fibers containing silver ions. The fibers are manufactured by dissolving silver nitrate into a polymer solution in the substantial absence of light, and then extruding the obtained solution into fibers by wet spinning process. The silver content of the wound dressing is between 0.01-10% by weight, and preferably 0.1-7% by weight.
D01F 9/04 - Man-made filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of alginates
05 - Pharmaceutical, veterinary and sanitary products
10 - Medical apparatus and instruments
Goods & Services
Pharmaceutical and medical preparations; sanitary preparations for medical purposes; sterilising preparations; materials for dressings; plasters; adhesive plasters; sticking plasters; bandages, gauzes and swabs and wadding and tapes for medical and surgical purposes; bandages for dressings; wadding for medical purposes; absorbent wadding; gauze for dressings; compresses; cotton for medical purposes; absorbent cotton; adhesive tapes and bands for medical purposes; disinfectants and antiseptics; detergents for medical purposes; surgical scrubs, washes and cleanses; moisture gels for wound care; ointments for skin grafts; preparations for the treatment of burns; preparations and dressings for the treatment and prevention of pressure ulcers. Surgical, medical and dental apparatus and instruments; surgical and wound treating equipment; gloves for medical, surgical and dental purposes; surgical drapes, sterile sheets, face masks, protective clothing for surgical and medical use, protective drapes for surgical and medical use; medical and surgical blankets.
Disclosed is a surgical incision retractor, comprising a retractor body (1), wherein one end of the retractor body (1) is provided with a locking ring (101), and the other end of the retractor body (1) penetrates the locking ring (101) to form a ring-shaped surgical incision retractor, so as to adjust the perimeter of the surgical incision retractor.
A reinforced wound dressing and a preparation method therefor. The reinforced wound dressing comprises a gelatinous fiber material and non-gelatinous fiber reinforcing lines; the gelatinous fiber material is in the form of a non-woven fabric, preferably in the form of a needle-punched non-woven fabric, a hot-melted non-woven fabric, or a chemical bonded non-woven fabric; the non-gelatinous fiber reinforcing lines consist of surface lines and bottom lines, and are interwoven on the gelatinous fiber material along an interweaving track. The dressing is fantastic in concept and obvious in reinforcing effect; the advantages of a gelatinous fiber wound dressing on moisture absorption and wound protection are retained, and the dressing is also conducive to removal of gelatinous fibers as a whole piece during dressing changing, so that the risk that the gelatinous fibers remain on a wound is greatly reduced and thus the dressing is more beneficial for would healing.
A61L 15/32 - Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin
A61L 15/18 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
A61L 15/42 - Use of materials characterised by their function or physical properties
A61L 15/46 - Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
Disclosed are a silver-containing antibacterial product and a preparation method thereof. The silver-containing antibacterial product contains a silver-containing alcohol amine chelate as an antibacterial ingredient obtained by mixing a silver-containing substance and an alcohol amine for reaction. The silver-containing alcohol amine chelate is uniformly distributed in and combined with the internal part and/or the surface of the product. The silver-containing product contains 0.01 to 10 weight% of silver by weight of the product, and the moisture absorption capability of the product is at least 6g/g. A silver-containing antibacterial dressing can be prepared from the silver-containing antibacterial product. The silver-containing antibacterial product exhibits an antibacterial activity on Staphylococcus aureus.
A wound dressing containing silver chelate fibers has a single-layer structure or a multi-layer structure. The wound dressing having a single-layer structure is manufactured by blending and spinning silver chelate fibers and silver-free fibers. The wound dressing having a multi-layer structure comprises a silver chelate fabric and a silver-free fabric, and the silver chelate fabric is manufactured by blending and spinning silver chelate fibers and silver-free fibers. The weight of the silver-free fibers is 5-95 wt% of the total weight of the wound dressing. The silver chelate fibers contained in the wound dressing has a silver content of 1-35 wt%. The wound dressing has an areal weight of 25-750 g/m2, moisture absorption of 5 g/100 cm2 and above and wet strength of 0.3 N/cm and above.
A wound dressing, including: a first outer layer, a second outer layer, and a middle layer disposed between the first outer layer and the second outer layer. The volume density of the first outer layer and a volume density of the second outer layer are greater than that of the middle layer; the first outer layer, the second outer layer, and the middle layer are bonded together.
A three-layered wound dressing, including: a first layer, a second layer, and a third layer. The first layer includes a blend of first hydrophilic fibers and first hydrophobic fibers, the second layer includes a blend of second hydrophilic fibers and second hydrophobic fibers, and the third layer includes hydrophobic fibers. The second layer is disposed between the first layer and the third layer. In use, the first layer contacts a wound.
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
A hygroscopic silver-containing antibacterial product containing silver thiosulfate complex or silver-ammonia complex; the complex is uniformly distributed and incorporated within and/or on the surface of the product; measured by weight, the product has a silver content of 0.01%-10% by weight, and the hygroscopic capacity of greater than 6 g/g. In addition, also provided are a preparation method and silver-containing antibacterial surgical dressing used for chronic infectious exudative wounds.
D06B 1/04 - Applying liquids, gases or vapours on to textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by pouring or allowing to flow on to the surface of the textile material
D06B 9/04 - Successively applying two or more different solvent-based treating materials
D06M 15/564 - Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
D06M 11/55 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfuric acid or thiosulfuric acid or their salts
D06M 11/58 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
D06M 11/59 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with complexes of organic amines with inorganic substances
A61L 15/18 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
A01P 1/00 - Disinfectants; Antimicrobial compounds or mixtures thereof
12.
WOUND DRESSING CONTAINING THREE-LAYER FABRIC AND WOUND DRESSING MANUFACTURING METHOD
A wound dressing containing three-layer fabric, comprising a first outer layer of fabric (1) and a second outer layer of fabric (3) on the two external surfaces of the wound dressing, and an intermediate fibrous layer of fabric (2) therebetween. The volume density of both the first outer layer of fabric (1) and the second outer layer (3) of fabric is between 0.08 and 0.32 g/cm3, being greater than the volume density of the intermediate fibrous layer of fabric (2), and the weight of both the first outer layer of fabric (1) and the second outer layer of fabric (3) is between 8 and 140 g/m2. The wound dressing has high moisture retention, and can absorb and retain a great amount of wound exudate absorbed into the intermediate fibrous layer of fabric (2), thus preventing the exudate from flowing back to the wound to cause secondary infection.
Provided are a wound dressing with a three-layer structure and a preparation method thereof. The wound dressing comprises a wound contact layer (1), a middle moisture absorbing layer (2) and an outer layer (3), the wound contact layer (1) is formed by nonwoven cloth containing hydrophilic fibers and hydrophobic fibers, the middle moisture absorbing layer (2) is formed by nonwoven cloth containing other hydrophilic fibers and hydrophobic fibers, and the outer layer (3) is formed by nonwoven cloth containing hydrophobic fibers. The wound dressing has a vertical moisture conducting function, which can quickly transfer wound secreted liquid to the middle layer to prevent skin around a wound from being soaked by the wound secreted liquid, can be used for nursing ulcerative wounds, and is especially suitable for wounds with much secreted liquid.
The present invention relates to a chemically modified sea silk fiber, wound dressing made therefrom and preparation method thereof. The cellulose ingredient of the chemically modified sea silk fiber introduces an absorbency group via chemical modification, and is changed into a modified cellulose ingredient; the modified cellulose ingredient has a degree of substitution of 0.05-0.5; the sea silk fiber has a linear density of 0.5-5 dtex and a fiber length of 5-180 mm. The present invention enables sea silk fiber to have hygroscopic and gel-forming properties via a modification technique, while retaining the active ingredient of algae granules, thus providing a moist and sustaining wound healing environment, enhancing the sea silk fiber application effect, and expanding the application scope.
D01F 8/02 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
D01F 8/18 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the like; Manufacture thereof from other substances
D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
The invention relates to an antibacterial silver-containing fiber wound dressing and a preparation method thereof, and in particular, the present invention relates to a silver-containing fiber wound dressing containing silver chloride particles, and a preparation method thereof. The silver-containing fiber wound dressing comprises silver-containing fibers. The silver chloride particles with the particle sizes in a range of 0.01-5 micrometers are uniformly distributed in the silver-containing fibers and on surfaces of the silver-containing fibers, and the silver content accounts for 0.01-10wt% of the weight of the wound dressing. As a wound treatment dressing, the silver-containing fiber wound dressing is capable of continuous releasing an enough amount of silver ions, which is especial suitable for chronic wound treatment, and can provide a long-term effective antibacterial function and effectively prevent wounds from being infected by various bacteria or other microbes.
D01F 9/00 - Man-made filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
D01F 2/08 - Composition of the spinning solution or the bath
Disclosed is a high hygroscopic wound dressing, comprising an underlayer formed from non sol fibers and a wool layer formed from sol fibers, wherein the sol fibers are woven on the underlayer and have free wool length of 1-100 mm. The wound dressing may be used for chronic wound, such as venous congestive ulcer, pressure ulcer, diabetic foot ulcer and other chronic ulcer wounds. A method for preparation of the wound dressing is also described.
Disclosed is a soluble hemostatic gauze prepared by carboxymethylated solvent spun cellulose fiber. Also disclosed is a method for preparing a soluble hemostatic gauze, the method comprising: using sodium hydroxide solution and sodium chloroacetate solution separately or simultaneously to basify and etherify solvent spun cellulose fiber. A carboxymethylcellulose fiber having high clarity, a high degree of substitution and high hydroscopicity which is used for preparing a soluble hemostatic gauze can be obtained at a lower temperature using the method.
The present invention relates to silvery antibacterial fibre, texture, and wound dressing, and a preparation method thereof. Silver ions are evenly distributed in the interior or on a surface of an antibacterial fibre structure. The silver content in the dressing is 0.01-10 weight%. As wound treatment dressing, the fibre wound dressing has a capability of continuously releasing a sufficient amount of silver, is particularly suitable for chronic wound treatment, can provide a long-term and effective antibacterial function, and can effectively prevent various bacteria or other microorganisms from infecting a wound.
A wound dressing with bacteriostasis and hygroscopicity, the preparation method thereof, and the use thereof in preparing a product for treating chronic wounds. The dressing comprises chitosan fibre and modified cellulose fibre.
A wound dressing comprising acylated chitosanfibre. The dressing has a wet strength of 0.3 N/cm or above. The acylated chitosan fibre may have a degree of substitution of 0.10-0.50. The acylated chitosan fibre may preferably have a degree of substitution of 0.20-0.40. The dressing may have an absorbency of 5-25g/g of a solution containing 8.298g/l of sodium chloride and 0.368g/l of calcium chloride dehydrate as measured by BSEN 13726-12002 Part 1 Aspects of Absorbency. The base material of the dressing may be chitosan fibre that has been chemically modified through an acylation process using an hydride and ethanol as the solvent. A method of manufacturing the wound dressing involves reacting chitosan fibre with an hydride and making acylated chitosan felt through a nonwoven process, and through cutting, packing and sterilizing processes.
ZHUJIANG HOSPITAL, SOUTHERN MEDICAL UNIVERSITY (China)
Inventor
Wang, Xiaodong
Lv, Qiulan
Shi, Fujun
Abstract
A wound dressing with high moisture absorption and capable of being removed as a whole and a preparation method therefor. The wound dressing with high moisture absorption and capable of being removed as a whole comprises crosslinked carboxymethyl solvent-spun cellulose fiber or fabric, and preferably microcrosslinked carboxymethyl solvent-spun cellulose fiber or fabric. A use of the wound dressing in treatment of chronic wounds.
ZHUJIANG HOSPITAL, SOUTHERN MEDICAL UNIVERSITY (China)
Inventor
Wang, Xiaodong
Zhang, Dawei
Shi, Fujun
Abstract
An anti-bacterial, moisture absorptive and calcium ion donating wound dressing and a preparation method therefor. The wound dressing comprises chitosan fibers, calcium alginate fibers and chemically modified cellulose fibers. The preparation method comprises blending chitosan fibers, calcium alginate fibers and chemically modified cellulose fibers to obtain a fabric, cutting, packaging, and sterilizing. The wound dressing is useful in treatment of venous stasis ulcers, pressure ulcers, diabetic foot ulcers and other chronic ulcers.
