Abstract

The invention relates to a magnesium alloy which comprises: Zn: 0.5 - 2 wt%, Mn: 0.2 - 1 wt%, Ca: 0.1 - 2 wt%, wherein the magnesium alloy comprises 0.6 wt% or more Mn or 0.6 wt% or more Ca, between 0.5 wt% and 1,5 wt% Mn and Ca in sum, and wherein Mg and impurities account for the remaining content in the alloy that is missing up to 100 wt%. The invention further relates to an implant of a calcium containing magnesium alloy, which is coated with a calcium phosphate layer. The invention further relates to a method of producing a biodegradable implant.

IPC Classes  ?

• C22C 23/04 - Alloys based on magnesium with zinc or cadmium as the next major constituent
• C25D 11/30 - Anodisation of magnesium or alloys based thereon
• A61L 27/32 - Phosphorus-containing materials, e.g. apatite
• A61L 31/04 - Macromolecular materials
• A61L 27/04 - Metals or alloys
• A61L 27/58 - Materials at least partially resorbable by the body

Abstract

The invention relates to a method for treating a metal surface by a plasma electrolytic oxidation process. According to the invention, a further layer is applied to a substrate. Additionally, a biodegradable material is also applied.

IPC Classes  ?

• A61L 27/04 - Metals or alloys
• A61L 27/06 - Titanium or titanium alloys
• A61L 27/30 - Inorganic materials
• A61L 27/32 - Phosphorus-containing materials, e.g. apatite
• A61L 27/54 - Biologically active materials, e.g. therapeutic substances
• C25D 11/00 - Electrolytic coating by surface reaction, i.e. forming conversion layers

Abstract

The invention relates to an osteosynthesis plate having at least two segments, which are arranged in such a way that the at least two segments can be moved in relation to each other.

IPC Classes  ?

• A61B 17/80 - Cortical plates

Abstract

Fixation system with bone plate and two kinds of bone screws, of which one kind comprises threads (41) on the screw head (40). The bone plate has two intersecting and stepped circular holes (21, 22) of different sizes, in the upper areas of which there extends a rib (33), which cooperates with the thread (41) and in so doing adapts thereto.

IPC Classes  ?

• A61B 17/80 - Cortical plates
• A61B 17/86 - Pins or screws

Abstract

The invention relates to a bone plate and to a fixation system comprising two types of bone screws. The bone plate has two intersecting stepped round holes (21, 22) which are different in size and in the upper regions of which a circumferential rib (33) extends. The upper region of the smaller round hole (22) is designed to slidably guide a bone screw having a partially spherical head and a screw having a thread or conical head. The lower region of the larger round hole (21) is used to support a conical head (42).

IPC Classes  ?

• A61B 17/80 - Cortical plates
• A61B 17/86 - Pins or screws

Abstract

The invention relates to a connecting element for modular components of implants, in which the implant modules, such as the proximal and distal components, are interconnected by means of a mounting screw. The front surfaces of the connecting element and the contact surfaces of the implant module facing towards said front surfaces are embodied as conical surfaces which change the axial stress applied by the mounting screw in the conical contact surfaces into corresponding radial or annular stress for connecting the components. The conical surfaces are annular and embodied as double conical surfaces having an outer and an inner cone.

IPC Classes  ?

• A61F 2/30 - Joints
• A61F 2/36 - Femoral heads
• A61F 2/40 - Joints for shoulders

Abstract

The invention relates to a modular system for anchoring and positioning components of implants, characterized by a molded part (1), which is adapted to the joint anatomy and bone character and forms an implant component and which can be connected to the bone in an angularly stable manner by means of a preferably central fastening element, the fastening element also being used to connect further implant components (4), and which, by means of one or more blade-like fixing elements (5), can be introduced into the molded part and the bone in a divergent or convergent manner, the blade-like fixing elements being supported at the rear end thereof on the molded part.

IPC Classes  ?

• A61F 2/30 - Joints
• A61F 2/40 - Joints for shoulders

Abstract

The invention relates to a modular component (1) to be combined with implant components, preferably for hip or shoulder joint prostheses. The invention is cage-shaped, partially enclosing the implant components at a distance therefrom, and is arranged in such a way that the invention allows bone structures and tissue structures to be rigidly fixed in order to embed the implant components in an anatomically and biomechanically correct manner, wherein the distance can be defined in such a way that the resulting intermediate space or cavity can be used to attach bone fragments, tissue fragments, and/or biomaterials and bone substitute materials.

IPC Classes  ?

• A61F 2/30 - Joints

Abstract

The aim of the invention is to increase the number of possible uses of previously known bone plates and to increase their flexibility of manipulation. The invention relates to a bone plate (1) comprising a lower side (3) that rests against the bone and an upper side (2) that is opposite the bone, in addition to a plurality of holes that are provided, essentially, along the longitudinal axis of the plate, through which bone screws, which are to be anchored to the bone, can be inserted. At least one of said holes is a continuous hole (4). Thread grooves (5) are provided in the continuous hole. An additional embodiment of the inventive bone plate (1) is characterised in that the thread grooves (5), when seen in the direction transversal to the plane of the upper side (2), are arranged only over one part of the depth of the oblong hole (4) and in said direction, above or below the thread grooves (5), a smooth walled support structure (6) for a positive fit with a correspondingly configured negative structure is provided on a screw head of a bone screw.

IPC Classes  ?

• A61B 17/80 - Cortical plates
• A61B 17/86 - Pins or screws

Abstract

The aim of the invention is to enlarge the possibilities of use of previously known bone plates and increase their flexibility of manipulation. To this end, the invention proposes a bone plate (1) comprising a bottom side (3) that is to rest against the bone and an upper side (2) opposite to the bone as well as a plurality of holes located preferably along the longitudinal axis of the plate, through which bone screws (9, 11) can be inserted to be anchored to a bone. At least one of these holes is a continuous oblong hole (4) comprising a longitudinal axis running in the direction of the longitudinal axis of the plate. Thread flights (5) are provided in a partial area of the lateral side of the oblong hole, said thread flights, when seen in a direction transversal to the plane of the upper side (2), are arranged only over a part of the depth of the oblong hole (4). In the direction transversal to the plane of the upper side (2), above and/or below the thread flights (5), a support structure (6) with smooth walls for the positive fit with a correspondingly configured negative structure (14) at a screw head (10, 12) or screw neck of a bone screw (9, 11) is provided.

IPC Classes  ?

• A61B 17/80 - Cortical plates