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Intermediate segment for a joint component

A segment and component technology, applied in the field of intermediate segments, which can solve problems such as expensive and less than ideal alternatives

Active Publication Date: 2019-07-05
WALDEMAR LINK GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the extent of bone tissue loss can usually only be assessed during surgery, individually tailored joint components for a particular patient are an extremely expensive and less than ideal alternative

Method used

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  • Intermediate segment for a joint component
  • Intermediate segment for a joint component
  • Intermediate segment for a joint component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 The exemplary embodiment shown uses a femoral component with a knee endoprosthesis as joint component 10 . Of course the intermediate segment of the present invention may also be used on other joint components having a concave graft surface.

[0043] figure 1 The distal end of the illustrated exemplary articular component 10 is provided with a convex articular surface 13 that faces the articular surface of a second articular component when the joint replacement is implanted.

[0044] The side of the articular component 10 opposite to said articular surface 13 is provided with a concave graft surface 14 . The concave graft surface 14 faces the patient's bone tissue when the joint component 10 is implanted.

[0045] Generally, the concave graft surface 14 can be positioned relative to the bone tissue at the implantation site so that an optimal connection with adjacent bone tissue can be achieved. This means that when bone cement is used to anchor the joint co...

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PUM

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Abstract

The present invention relates to an intermediate segment (20) for an arrangement between a concave implantation surface (14) of a joint component (10), in particular a femoral prosthesis, and bone tissue. In this case, the intermediate segment (20) has an intermediate segment body (23) with at least one side (24, 25) facing the joint component (10), wherein one side (24) of the at least one side facing the joint component is convex. In addition, the intermediate segment (20) comprises a locking mechanism for attaching the intermediate segment to the joint component with at least one first (21)and a second (32) locking element, at least one of the locking elements (21, 32) being movable. The present invention also relates to a joint component (10) having an intermediate segment (20) and toa method for fastening an intermediate segment (20) to a joint component (10).

Description

technical field [0001] The present invention relates to an intermediate segment for placement between a concave graft surface of a joint component and bone tissue to replace missing tissue to support a prosthesis. Furthermore, the invention relates to a joint component with an intermediate segment and a method for fastening the intermediate segment to the joint component. Background technique [0002] When an artificial joint replacement is implanted, more bone mass of the patient may have to be removed or has been lost than is required to properly fit the joint components of the joint replacement. In this case, therefore, at least in the section between the joint part and the bone tissue there will be a void space. The cause may be pre-existing damage to the bone tissue, such as from a fracture, tumor, or gangrene. As a result, the sides or surfaces of the joint part used to fix the joint part to the bone tissue can no longer be optimally positioned relative to the bone t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38A61F2/30
CPCA61F2/3859A61F2/30734A61F2002/30736A61F2002/30331A61F2002/30112A61F2002/30492
Inventor K·德姆斯凯斯基
Owner WALDEMAR LINK GMBH & CO