Bone bending knife and bone knife for prosthesis

A bone knife and knife edge technology, applied in prosthesis, medical science, elbow joint, etc., can solve the problem of ineffective removal of tibial prosthesis, etc., and achieve the effect of prolonging the operation time

Inactive Publication Date: 2018-11-30
温州嘉一三维技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor found in the research that there is no effective device for removing the tibial prosthesis in the existing knee prosthesis

Method used

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  • Bone bending knife and bone knife for prosthesis
  • Bone bending knife and bone knife for prosthesis
  • Bone bending knife and bone knife for prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] refer to Figure 1 to Figure 5 , the present embodiment provides a curved bone knife, including a handle 101 and a blade body 103, the blade body 103 includes a connecting portion 104, a bending portion 105 and a knife edge 106, the connecting portion 104 is installed on the handle 101, and one end of the bending portion 105 is connected to the The knife edge 106 is connected to the end of the bent portion 105 away from the connecting portion 104 .

[0048] Due to the special material of the knee joint prosthesis, the price is also expensive, but when the knee joint is revised, it is necessary to separate the lateral part of the tibial prosthesis from the lateral tibial plateau, and the lateral part is blocked by the patella and quadriceps femoris. Stable tibial prostheses are difficult to remove.

[0049] This embodiment provides a curved bone knife that can be used for revision of the knee joint prosthesis. The blade 103 is provided with a bending part 105, which can...

Embodiment 2

[0060] This embodiment provides a bone knife for a prosthesis, including the above curved bone knife.

[0061] The bone knife for the prosthesis provided in this embodiment includes the above-mentioned curved bone knife, which can well bypass the patella and quadriceps, thereby separating the lateral part of the tibial prosthesis from the lateral tibial plateau, and then can complete the adjustment of the knee joint. Removal of a stable tibial prosthesis during prosthetic revision.

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Abstract

The invention provides a bone bending knife and a bone knife for prosthesis and belongs to the field of medical instruments. The bone bending knife comprises a handle and a knife body, the knife bodycomprises a connecting part, a bending part and a knife edge, the connecting part is installed on the handle, one end of the bending part is connected with the connecting part, and the knife edge is connected with one end of the bending part and away from the connecting part; the bone knife for the prosthesis comprises the bone bending knife. The bone bending knife can renovate knee prosthesis, the knife body is provided with the bending part, patella and quadriceps femoris can be well bypassed, the lateral position of the tibial prosthesis is separated from the lateral tibial plateau, renovation of the knee joint prosthesis can be completed, and extensive bone loss is avoided while the tibial prosthesis is removed.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a curved bone knife and a bone knife for prostheses. Background technique [0002] Knee joint prosthesis, product performance, structure and composition This product includes tibial base plate assembly with eccentric distance and related accessories (including compensating tibial base plate, tibial base plate adapter, tibial base plate spacer, tibial locking joint) for knee joint replacement. All components are made of Ti6Al4V material and ultra-high molecular weight polyethylene. The surface of the titanium alloy parts has no coloring, and the surface of the non-articular surface is treated with a frosted surface. [0003] The inventor found in research that there is no instrument for effectively removing the tibial prosthesis in the existing knee prosthesis. Contents of the invention [0004] The object of the present invention is to provide a curved bone knife to improve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46A61F2/38
CPCA61F2/38A61F2/389A61F2/461A61F2/4644
Inventor 张进孙立田晓滨杨先腾李森磊
Owner 温州嘉一三维技术有限公司
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