Prosthesis fixation with mechanically compacted biocompatible granules
AssigneeFondel Finance B.V.
InventorsAllan McLeod, Daniel McLeod
Life of this patent
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Abstract
An assembly for fixating a prosthesis in body tissue such as bone of a mammal, comprising a mechanical compacting device and a mass comprising at least granules of a biocompatible material having a sponge-like structure, wherein the mechanical compacting device is designed for compacting the granules during use by insertion of the device in a hole in bone and subsequently inducing relative movement of at least a first part of the compacting device relative to a second part thereof, such that the volume of at least one space between at least part of an outer surface of the device and the adjacent inner surface of said hole is reduced.
Claims45
An assembly for fixating a prosthesis in body tissue, comprising a mechanical compacting device and a mass comprising at least granules of a biocompatible material having a sponge-like structure, wherein the mechanical compacting device is designed for compacting the granules during use by insertion of the device in a hole in bone and subsequently inducing relative movement of at least a first part of the compacting device relative to a second part thereof, such that the volume of at least one space between at least a part of an outer surface of the device and the adjacent inner surface of said hole is reduced.
A prosthesis comprising a fixation part such as a stem, wherein on at least a part of said fixation part compacting means are provided and a mass comprising at least granules of a biocompatible material having a sponge-like structure, enclosed within said compacting means, such that during use the compacting means are operable when said fixation means are inserted into a bore in bone and bone growth is enabled through at least part of the compacting means, from the wall of said bore in said bone as far as into said granules.
A method for fixation of a prosthesis in bone, comprising the steps of:
- providing a hole in said bone;
- introducing a compacting device and a fixation element such as a stem of a prosthesis into said hole;
- introducing a mass comprising at least granules of a biocompatible, sponge-like material into at least one space in said compacting device and/or between at least part of said compacting device and an inner wall of said hole;
- and
- moving a first part of the compacting device relative to a second part of said device, thereby reducing the volume of said at least one space and compacting at least part of the mass within said compacting device and/or between the compacting device and said inner wall part.
A method for preparation of a prosthesis for fixation in an opening such as a bore in bone, wherein the prosthesis is provided with compacting means which enclose at least one space, into which at least one space a mass is introduced, said mass comprising at least granules of a biocompatible material having a sponge-like structure and, preferably, biological material compatible with the bone into which said prosthesis is to be positioned, said compacting means being arranged for compacting said mass around at least part of fixation means of said prosthesis.
Assembly for fixating a prosthesis in body tissue such as bone of a mammal, comprising a mechanical compacting device and a mass comprising at least granules of a biocompatible material, the mechanical compacting device being designed for compacting the granules during use by insertion of the device in a hole in bone and subsequently inducing relative movement of at least a first part of the compacting device relative to a second part thereof, such that the volume of at least one space between at least part of an outer surface of the device and the adjacent inner surface of said hole is reduced, characterized in that the granules have a sponge like structure, such that bone and tissue can grow into said mass.
Prosthesis comprising a fixation part, provided on at least a part of said fixation part with compacting means and a mass comprising at least granules of a biocompatible material, such that during use the compacting means are operable when said fixation means are inserted into a bore in bone, characterized in that the granules have a sponge like structure and are provided on and/or enclosed within said compacting means such that during use bone growth is enabled through at least part of the compacting means, from the wall of said bore in said bone into said granules.
Method for fixation of a prosthesis in bone, comprising the steps of:
- providing a hole in said bone;
- introducing a compacting device and a fixation element into said hole;
- introducing a mass comprising at least granules of a biocompatible, sponge like material into at least one space in said compacting device and/or between at least part of said compacting device and an inner wall of said hole;
- and
- moving a first part of the compacting device relative to a second part of said device, therewith reducing the volume of said at least one space and compacting at least part of the mass within said compacting device and/or between the compacting device and said inner wall part.
Method for preparation of a prosthesis for fixation in an opening such as a bore in bone, wherein the prosthesis is provided with compacting means, characterized in that said compacting means enclose at least one space, into which at least one space a mass is introduced, said mass comprising at least granules of a biocompatible material having a sponge like structure and, preferably, biological material compatible with the bone into which said prosthesis is to be positioned, said compacting means being arranged for compacting said mass around at least part of fixation means of said prosthesis.
Dependencies are inferred from the claim text.