Toe joint prosthesis with low osteotomy amount

A toe joint and osteotomy technology, which is applied in the field of toe joint prosthesis, can solve the problems of component prolapse risk, weak anti-rotation ability, and easy prolapse of gaskets, so as to enhance anti-rotation performance, reduce enterprise processing costs, and reduce surgical operations effect of difficulty

Pending Publication Date: 2021-09-24
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the toe joint prosthesis in the existing patent has the following defects: (1) the spacer is easy to come out due to the unlimited design of the mating position of the pad and the phalanx abutment in the toe joint prosthesis; (2) the existing toe joint prosthesis Due to the complex structure of the body, the operation during the operation is relatively complicated, and the amount of osteotomy is large; (3) the existing toe joint prosthesis has a weak anti-rotation ability due to the outer contour structure of the medullary needle part; Part of the bone end of the medullary needle is gradually retracted towards the medullary cavity, and there is a risk of prolapse of parts under certain conditions

Method used

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  • Toe joint prosthesis with low osteotomy amount
  • Toe joint prosthesis with low osteotomy amount

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Experimental program
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Effect test

Embodiment 1

[0027] Please refer to the attached Figure 1-2 , the purpose of this embodiment is to provide a toe joint prosthesis with low osteotomy, including: metatarsal platform 7 and phalanx platform 8, wherein the metatarsal platform 7 and phalanx platform 8 can be relatively rotated to assist in the completion of the operation , the two articular surfaces of the two platforms are designed to fit their respective bone articular surfaces, and can be used alone on one of the two bone articular surfaces of the metatarsophalangeal joint during surgery depending on the situation.

[0028] Specifically, a spacer 3 is provided between the metatarsal platform 7 and the phalanx platform 8, and a spacer 3 and a phalanx platform 8 are provided with a limiting structure; the spacer 3 and the phalanx platform 8 are fixedly connected by the spacer 3, and the spacer structure is A circle of grooves with rounded corners, wherein the grooves cooperate with the raised structure of the phalanx platform...

Embodiment 2

[0034] Please refer to the attached Figure 1-2 , the purpose of this embodiment is to provide a toe joint prosthesis with low osteotomy, including: metatarsal platform 7 and phalanx platform 8, wherein the metatarsal platform 7 and phalanx platform 8 can be relatively rotated to assist in the completion of the operation , the two articular surfaces of the two platforms are designed to fit their respective bone articular surfaces, and can be used alone on one of the two bone articular surfaces of the metatarsophalangeal joint during surgery depending on the situation.

[0035] Specifically, a spacer 3 is arranged between the metatarsal platform 7 and the phalanx platform 8, and a limiting structure is arranged between the spacer 3 and the metatarsal platform 7; the spacer 3 and the metatarsal platform 7 are fixedly connected by the spacer 3, and the spacer structure is There are two circles of grooves with rounded corners, wherein the grooves cooperate with the raised structur...

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Abstract

The invention relates to the technical field of medical prostheses, and provides a toe joint prosthesis with a low osteotomy amount. The toe joint prosthesis with the low osteotomy amount comprises a metatarsal platform and a phalanx platform, wherein the metatarsal platform and the phalanx platform can rotate relatively; a gasket is arranged between the metatarsal platform and the phalanx platform, and a limiting structure is arranged between the gasket and the phalanx platform; and only a metatarsal bone marrow needle is arranged on the metatarsal platform, and a toe bone marrow needle is arranged on the phalanx platform. The toe joint prosthesis with the low osteotomy amount has the beneficial effects that the limiting design is carried out between the gasket and the phalanx platform or the metatarsal platform, so that the post-operation prolapse risk of the gasket is reduced, and the post-operation repair probability is reduced; and on the basis that functions are not affected, the structure is simple, and the machining cost of enterprises, the operation risk of an operation and the operation cost of a patient are reduced.

Description

technical field [0001] The invention relates to the technical field of medical prosthesis, in particular to a toe joint prosthesis with low osteotomy. Background technique [0002] Toe joint prosthesis is a surgical implant used in toe joint replacement to replace the toe joint of human patients. When the toe joint of the human body needs to be repaired due to tumors or comminuted fractures, it is often easy to cause serious bone defects in the toe joint. Severe bone defects not only make the toe joint osteotomy position force bearing capacity worse, but also easily The attachment point defect of the muscles at the toe joint or the damage of the joint capsule are caused. At this time, it is necessary to select a suitable toe joint prosthesis to replace the patient's toe joint. [0003] Chinese patent CN112754737A discloses an implantable toe joint prosthesis, comprising: metatarsal needles, metatarsal abutments, metatarsal joint heads, spacers, phalanx abutments, and phalan...

Claims

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Application Information

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IPC IPC(8): A61F2/42
CPCA61F2/4225A61F2002/4233A61F2002/30662
Inventor 许奎雪刘曙光周浩然岳术俊史春宝任宏志荀世界李喜旺
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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