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Tibial prosthesis with bone scale line reserved

A prosthesis, tibial technology, applied in the field of tibial prosthesis, can solve the problems of different lengths of legs, limited height of children, affecting the growth of the tibia, etc., and achieve the effect of reducing the impact

Inactive Publication Date: 2021-03-12
BEIJING LIDAKANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned treatment operation needs to resect the distal tibia, and implant a prosthesis in the missing part of the tibia, so as to preserve the limbs. However, when the entire distal femur is resected, the bone scale line is also removed, which affects the growth of the tibia in children, resulting in the height of the children. Restricted or uneven leg length

Method used

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  • Tibial prosthesis with bone scale line reserved
  • Tibial prosthesis with bone scale line reserved
  • Tibial prosthesis with bone scale line reserved

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] refer to figure 1 , the tibial prosthesis that retains the calculus line includes a proximal prosthesis 1, a distal prosthesis 2, and an extension prosthesis 3 arranged between the proximal prosthesis 1 and the distal prosthesis 2, and different lengths of the prosthesis are selected. Body 3 is able to adjust the length of the tibial prosthesis that preserves the calculus line. During the operation, the diseased part of the tibia was resected, and the proximal tibia 4 and the distal tibia 5 were reserved, and the proximal prosthesis 1 was connected to the proximal tibia 4, and the distal tibia 5 was connected to the distal prosthesis 2.

[0048] refer to figure 2 The proximal prosthesis 1 includes a medullary needle 11 and a proximal base 12. The medullary needle 11 is a cylinder for insertion into the medullary cavity of the proximal end of the tibia 4. The end of the medullary needle 11 away from the proximal base 12 is integrally formed with Dome, so as not to dam...

Embodiment 2

[0057] refer to Figure 4 The difference between this embodiment and Embodiment 1 is that the end of the proximal seat 12 close to the medullary needle 11 is processed with external threads, and the end of the trabecular bone sleeve 13 close to the proximal seat 12 is processed with internal threads. The beam sleeve body 13 and the proximal seat body 12 are screwed together, which can be firmly connected and easy to install.

Embodiment 3

[0059] refer to Figure 5 , The difference between this embodiment and Embodiment 1 is that the proximal base body 12 is concave-convexly matched with the trabecular bone sleeve body 13 . The edge of the proximal base 12 close to the end of the medullary needle 11 is integrally connected with several protruding teeth 123, and the trabecular bone sleeve 13 is provided with the same number of protruding teeth 123 as the cogs 131, which can be locked together to prevent relative rotation. , and is convenient for processing and manufacturing.

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Abstract

The invention relates to the technical field of medical instruments, and in particular relates to a tibial prosthesis with a bone scale line reserved. The tibial prosthesis comprises a near-end prosthesis, a far-end prosthesis and an extension prosthesis arranged between the near-end prosthesis and the far-end prosthesis, an ear plate is connected with one side, far away from the extension prosthesis, of the far-end prosthesis, and a screw hole is formed in the ear plate. The tibial prosthesis has the effect of reducing the influence of tibia far-end osteosarcoma surgery on tibia growth of a child patient.

Description

technical field [0001] The present application relates to the field of medical devices, in particular to a tibial prosthesis that retains the calculus line. Background technique [0002] The tibia is the second most common site of osteosarcoma after the femur, and tibial osteosarcoma accounts for about 19% of total body osteosarcoma, and 20% of tibial osteosarcomas occur in the distal tibia. Due to the presence of many tendons, blood vessels, and nerves in the distal tibia, it is difficult to obtain a good tumor margin. Therefore, some scholars recommend below-knee amputation as the preferred surgical method for distal tibial osteosarcoma. In recent years, with the advancement of chemotherapy and surgical techniques, limb salvage treatment for osteosarcoma of the distal tibia can also achieve a good survival rate, and is recognized and recommended by the majority of bone tumor doctors. [0003] The above-mentioned treatment operation needs to resect the distal tibia, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38A61F2/30
CPCA61F2/389A61F2/30771A61F2/30942A61F2002/30329A61F2002/30784A61F2002/2892
Inventor 邹明霞曹鹏飞
Owner BEIJING LIDAKANG TECH
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