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Umbrella shaped memory alloy support in femoral head

A memory alloy and support technology, applied in the field of medical devices, can solve the problems of weak support and poor stability, and achieve the effects of firm fixation, easy deformation and placement, and pain reduction.

Inactive Publication Date: 2011-04-06
LANZHOU SEEMINE SMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The femoral head memory metal bracket is made of cross braided metal wire, which has weak supporting force and poor stability

Method used

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  • Umbrella shaped memory alloy support in femoral head
  • Umbrella shaped memory alloy support in femoral head
  • Umbrella shaped memory alloy support in femoral head

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0013] An umbrella-shaped memory alloy femoral head supporter is composed of an umbrella-shaped supporter 1 and a support sleeve 2. The lower end of the umbrella-shaped supporter 1 is socketed with the support sleeve 2 through an umbrella handle 4. The umbrella-shaped supporter 1 composed of eight supporting umbrella ribs 3 utilizes the memory property of the memory alloy material, and the continuous pressurization function after shape recovery is beneficial to the close contact and support between the umbrella-shaped supporter and the inside of the femoral head. The support sleeve 2 is made of sheet material, and blood supply holes 5 are evenly distributed on the wall of the support sleeve 2. The outer surface of the support sleeve 2 has anti-retraction teeth 6. After implanting, the umbrella handle is inserted into the sleeve. Together with the umbrella-shaped supp...

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Abstract

An umbrella shaped memory alloy support in femoral head comprises an umbrella shaped support and a support sleeve, wherein the lower end of the umbrella shaped support is in sleeve joint with the support sleeve by an umbrella handle; the umbrella shaped support is formed by eight supporting ribs; the support sleeve is formed by rolling plates; blood supply holes are distributed on the wall of the support sleeve; and withdrawal preventing pawls are arranged on the outer surface of the support sleeve. The support not only plays a powerful supporting role in femoral head, but also can assist in revascularization of femoral head, prevent further collapse of femoral head, alleviate more pains of the patients, shorten the operation time and simplify the operation, is safe and reliable in supporting and has obvious effect on treating collapse of femoral head caused by adult avascular necrosis of femoral head. The support has simple process and shape, is easy to deform and insert, is stable in installation after complex, is convenient to use in operation and is secure and reliable in fixation.

Description

technical field [0001] The invention relates to a medical instrument, in particular to an umbrella-shaped memory alloy femoral head supporter which is used for implanting in the femoral head in surgery and orthopedics and can well support the collapsed femoral head. Background technique [0002] At present, surgical methods such as core decompression plus bone grafting, vascular implantation, and osteotomy are commonly used to try to rebuild the blood supply of the femoral head. Due to the lack of strong support in the femoral head, further collapse of the femoral head cannot be prevented. In particular, the osteotomy further damaged the residual blood supply of the femoral head, and all of them collapsed to varying degrees in the later stage. The femoral head memory metal stent is made of cross braided metal wire, which has weak supporting force and poor stability. Contents of the invention [0003] The technical problem to be solved by the present invention is to provid...

Claims

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Application Information

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IPC IPC(8): A61B17/56A61L31/02
Inventor 杜东鹏达国祖缪祥文马悦辉孙宝辉
Owner LANZHOU SEEMINE SMA CO LTD
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