Middle and distal tibia tumor type prosthesis and preparation device and method thereof

A technology of prosthesis and tibia, which is applied in the direction of prosthesis, metal processing equipment, skull, etc., can solve the problems of large volume, complex structure and lack of intuitive understanding of diseased tibia in the middle and distal part of the tibia. Guaranteeing long-term stability, improving the degree of functional recovery, and balancing the overall mechanical distribution

Pending Publication Date: 2019-04-16
WUXI PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a tumor-type prosthesis in the middle and distal part of the tibia, its preparation equipment and its preparation method, so as to solve the problems raised in the above-mentioned background technology due to the lack of intuitive understanding of the diseased tibia and the lack of accuracy in simulating the bone defect after the undercut. A series of problems in the design, manufacture and application of the prosthesis caused by the large volume and complex structure of the pre-designed tumor-type prosthesis in the middle and distal tibia

Method used

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  • Middle and distal tibia tumor type prosthesis and preparation device and method thereof
  • Middle and distal tibia tumor type prosthesis and preparation device and method thereof
  • Middle and distal tibia tumor type prosthesis and preparation device and method thereof

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Embodiment 1

[0071] On the one hand, the present invention provides a tumor-type prosthesis in the middle and distal parts of the tibia, such as figure 1 As shown, the prosthesis model 1 is included, the prosthesis model 1 includes a prosthesis main body 11, the bottom of the prosthesis main body 11 is provided with an ankle bone end 12, the inside of the ankle bone end 12 is provided with a cavity 13, and the outer surface of the ankle bone end 12 is A plurality of positioning holes 14 are provided, a handle 15 is provided on the top of the prosthesis main body 11, and a plurality of interlocking holes 16 are provided on the outer surface of the handle 15, and the side of the prosthesis handle 11 near the interlocking hole 16 is provided with an outer The outer surface of the steel plate 17 and the outer steel plate 17 is provided with a plurality of screw holes 18, the positioning hole 14 is provided with screws 19, and the interlocking hole 16 of the prosthesis handle and the screw hole ...

Embodiment 2

[0076] As a second embodiment of the present invention, in order to further enhance the stability of the connection between the prosthesis main body 11 and the host bone tissue, the inventors also provided an inner steel plate 111, as a preferred embodiment, such as image 3 As shown, the size of the inner steel plate 111 matches the size of the outer steel plate 17, and the position of the inner steel plate 111 and the position of the outer steel plate 17 are arranged symmetrically, and the inner steel plate 111 and the outer steel plate 17 are symmetrically arranged on both sides of the prosthesis main body 11, The screw 19 is inserted into the tibia of the host through the interlocking hole 16 of the prosthesis on the outer steel plate 17, and the screw 19 passes through the other end of the interlocking hole 16 of the prosthesis, strengthens the fixation through the inner steel plate 111, and passes through the inner steel plate 111 and the outer steel plate 17 Fix the pros...

Embodiment 3

[0078] As a third embodiment of the present invention, on the other hand, the present invention also provides a preparation device for a tumor-type prosthesis in the middle and distal tibia, which is used to prepare the above-mentioned tumor-type prosthesis in the middle and distal tibia, such as Figure 5 , Figure 7 and Figure 8 As shown, the preparation equipment includes an image acquisition system for acquiring tibial image data and a 3D printing system for printing the prosthesis model 1. The image acquisition system exports image data that can be recognized by the 3D printing system through the 3D model reconstruction module. The image acquisition system includes an X-ray high-voltage generator module, an X-ray tube module, a collimation module, a detection module, an analog-to-digital conversion module, and a data processing module. The X-ray high-voltage generator module is used to generate X-ray high-voltage voltage, and the X-ray tube The module emits X-rays that ...

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Abstract

The invention relates to the technical field of auxiliary instruments, in particular to a middle and distal tibia tumor type prosthesis and a preparation device and method thereof. The preparation device comprises an image acquisition system for collecting tibia image data and a 3D printing system for printing a prosthesis model. The bilateral tibiofibula CT scanning is performed before an operation, the 3D tibiofibula of the affected side is reconstructed by reverse software, and the undercut range is expected corresponding to the tibia malignant tumor to make a middle and distal tibia tumortype prosthesis image to obtain intuitive understanding of the diseased tibia. The intraoperative prosthesis handle portion and the ankle mortise are compressed tightly with the host proximal tibia and the proximal talus osteotomy side, and fixed with multiple screws to complete the initial stabilization of the connection between two ends of the prosthesis and the host bone tissue. The porous surface of the proximal end of the prosthesis handle portion and the metal ankle mortise (a cavity at the ankle bone end) can promote the bone ingrowth, and the long-term postoperative stability is strengthened.

Description

technical field [0001] The invention relates to the technical field of auxiliary devices, in particular to a tumor-type prosthesis in the middle and distal tibia, its preparation equipment and its preparation method. Background technique [0002] At present, there are three main options for bone defect reconstruction after tumor resection in the mid-distal tibia: 1) large-segment allograft bone transplantation; 2) implantation with artificial ankle prosthesis; 3) implantation of mid-distal tibial joint fusion segment prosthesis. Among them, when a large segment of allograft bone is used to reconstruct a limb, bone regeneration is bound to be slow, and the possibility of complications such as allograft fracture, bone nonunion, and rejection increases accordingly. For prostheses with ankle joints, the local stress of the hinge-limited prosthesis will be more concentrated, and complications such as loosening and talar collapse are more likely to occur. And fibular impingement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61F2/30
CPCA61F2/28A61F2/30942A61F2002/2892A61F2002/30772A61F2002/30784A61F2002/30948A61F2002/30985
Inventor 冯德宏吴小玲何俊山顾晓峰
Owner WUXI PEOPLES HOSPITAL
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