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Pressurized endosseous implant prosthesis

A technology for implants and prostheses, applied in the field of biomedical engineering, can solve problems such as bone resorption failure, and achieve the effect of improving long-term stability and practicability

Inactive Publication Date: 2013-03-20
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressurized intraosseous implant can well solve the problem of failure caused by bone resorption caused by the stress shielding effect during the long-term use of the implant

Method used

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  • Pressurized endosseous implant prosthesis
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  • Pressurized endosseous implant prosthesis

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0014] see figure 1 , 2 , 3, 4, the present invention includes sequentially connected anchor body (composed of intramedullary fixation piece 2 and cortical nail 4), pressurized traction rod (consisted of traction rod 3 and disc spring 5), and intramedullary body 1. The cylindrical intramedullary fixation piece 2 with five parallel and staggered holes on the side is fixed in the femoral medullary cavity by means of cortical nails 4 penetrating both sides of the bone cortex to form an anchor. The lower end of the intramedullary body 1 is a mushroom-shaped structure 6, and the intramedullary body 1 is a hollow structure with internal threads. The upper end of the intramedullary body 1 is provided with a traction rod 3 with a disc spring 5 in the hollow cavity, and the traction rod 3 extends out. One end of the intramedullary body 1 is connected to the intramed...

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Abstract

The invention discloses a pressurized endosseous implant prosthesis, which comprises a hollow in-marrow body with internal threads, wherein the lower end of the in-marrow body has a mushroom-like structure; a draw bar with a belleville spring is arranged in a hollow cavity in the upper end of the in-marrow body; the end, which extends out of the in-marrow body, of the draw bar is connected with an in-marrow fixing piece through threads; and the side face of the in-marrow fixing piece has staggered pores matched with a cortical nail. In the invention, the pressurized endosseous implant prosthesis is firmly fixed by an internal pressurizing spring, the mechanical compatibility problem of the bone and the implant is solved effectively, and thus, the sclerotin absorption by the implant in a long-term implant state due to a stress shielding effect leads to sterile looseness of the implant is solved.

Description

technical field [0001] The invention belongs to the field of biomedical engineering, and specifically relates to a pressurized prosthetic intraosseous implant that can solve the problem of mechanical compatibility between bone and implant in the technology of bone implant prosthetic reconstruction of residual limbs after amputation of adult limbs. Amputation is not just a destructive operation but the beginning of functional reconstruction. Background technique [0002] When amputation is necessary due to infection, trauma, malignant tumor, etc., prosthetic reconstruction of residual limbs is the first choice for amputee patients. However, modern socket-type prosthetic technology has some defects that are difficult to overcome. For example, the negative pressure connection between the residual limb and the socket makes the interface between the socket and the socket poor in air permeability and easily produces odors; Infection; and the load-bearing method does not conform t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/60A61F2/28A61L27/06
Inventor 王臻朱伟军唐革辉郭征陈国景刘冬
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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