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Long bone lengthening prosthesis

A prosthesis and long bone technology, applied in the direction of bone implants, etc., can solve the problems of large incisions, easy complications, and many operations

Active Publication Date: 2021-04-20
BEIJING AKEC MEDICAL
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a long bone prosthesis to solve the problems in the related art that the prosthesis that can be extended requires a large incision, the number of operations is many, and complications are prone to occur.

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  • Long bone lengthening prosthesis
  • Long bone lengthening prosthesis
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Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] It sh...

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Abstract

The invention provides a long bone lengthening prosthesis. The long bone lengthening prosthesis comprises a first sleeve, a second sleeve and an elastic piece, and the first sleeve is provided with a first accommodating cavity; the second sleeve is located above the first sleeve, at least part of the second sleeve is arranged in the first sleeve, the second sleeve and the first sleeve are oppositely and movably arranged, the second sleeve is provided with a second accommodating cavity, and the first accommodating cavity communicates with the second accommodating cavity; and the elastic piece is arranged in the first accommodating cavity and / or the second accommodating cavity, the elastic piece is of a spiral structure, the spiral structure is provided with a hollow cavity, and an injection opening communicating with the hollow cavity is formed in the first sleeve. The elastic piece is made of a one-way memory alloy material, the elastic piece is arranged in an extendable mode, and when fluid with the preset temperature is injected into the hollow cavity, the elastic piece can extend. According to the technical scheme of the long bone lengthening prosthesis, the problems that in the related technology, complications are prone to being generated due to the fact that the extensible prosthesis needs a large incision, and the number of operations is large are effectively solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a long bone prosthesis. Background technique [0002] Extendable prosthesis can better solve the problem of unequal limb length after limb salvage surgery in children. However, since the currently widely used extendable prosthesis requires surgery for each extension, a certain length of incision is made to expose the extension screw. The prosthesis is extended using a mechanical drive. And the length of each extension is limited (the blood vessels and nerves cannot tolerate stretching, and multiple operations will increase the chance of infection and tissue scarring. [0003] Therefore, the invasive and extendable prosthesis currently used by doctors greatly increases the number of operations and the chance of postoperative complications for pediatric patients. This frequent operation process will last for ten years or even longer, causing considerable pain and economic...

Claims

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Application Information

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IPC IPC(8): A61F2/28
Inventor 王彩梅
Owner BEIJING AKEC MEDICAL
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