Prosthesis

A prosthesis and sleeve technology, applied in the field of prosthesis, can solve the problems of complex prosthesis structure, unsafe prosthesis extension, etc., and achieve the effect of simple extension method, simple mechanical structure and size matching, and overcoming poor safety.

Active Publication Date: 2020-01-24
MICROPORT SINICA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a prosthesis to solve the problem of unsafe extension of the existing prosthesis
[0006] One of the purposes of the present invention is also to provide a prosthesis to solve the problem of complex structure of the existing prosthesis
[0007] Another object of the present invention is to provide a prosthesis to solve the problem that the existing prosthesis requires invasive surgery to complete the extension

Method used

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Embodiment Construction

[0050] The prosthesis proposed by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0051] The core idea of ​​the present invention is to provide a prosthesis to solve the problem of unsafe extension of the existing prosthesis.

[0052] In order to realize the above idea, the present invention provides a prosthesis, which includes a shell, a first sleeve accommodated in the shell, a second sleeve and a third sleeve, wherein: the second sleeve It is configured to remain axially relatively stationary relative to the housing; the second sleeve is coaxially sleeved on the ...

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Abstract

A prosthesis, comprising a housing (10), a first sleeve (31), a second sleeve (32) and a third sleeve (33) that are accommodated within the housing (10); the second sleeve (32) is configured to remain axially stationary relative to the housing (10), the second sleeve (32) being coaxially sleeved on an exterior portion of the first sleeve (31); the first sleeve (31) is connected to the third sleeve (33) by means of a restriction assembly, and the third sleeve (33) extends from a proximal end to a distal end, and extends out of the housing (10), the restriction assembly restricting the third sleeve (33) from rotating about an axis of the second sleeve (32). Under the action of an alternating magnetic field, the second sleeve (32) has a first working state and a second working state; when the second sleeve (32) is in the first working state, the second sleeve (32) drives the first sleeve (31) to move along an axial direction of the housing (10), and when the second sleeve (32) is in the second working state, the second sleeve (32) causes the first sleeve (31) remain axially stationary relative to the second sleeve (32).

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a prosthesis. Background technique [0002] For children with tumors, especially osteosarcoma of the distal femur and proximal tibia with a high incidence rate, the early amputation treatment has been gradually replaced by limb salvage treatment. After the tumor is surgically removed, the child needs to install an internal prosthesis. Traditional limb salvage treatments mainly include autologous bone graft, allogeneic bone graft, and common prosthetic replacement. However, as the child grows up, the limbs on the healthy side will grow longer with the growth of the body, while the side where the prosthesis is implanted will not grow normally due to the destruction of the epiphysis, which will lead to abnormal limbs on both sides of the child. Equal length problem. This is not only ugly in appearance, but also brings inconvenience to the life of the children. It can also ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/28
CPCA61F2/28A61F2002/2825A61F2002/2892A61F2002/2896A61F2002/30329A61F2002/30405A61F2002/3052A61F2002/3055
Inventor 陈齐欧张立争张劼
Owner MICROPORT SINICA CO LTD
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