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Femoral stem prosthesis

A technology of femoral stem and stem body, which is applied in the field of medical equipment, can solve problems such as poor initial stability of fixation technology, and achieve the effect of solving poor initial stability

Inactive Publication Date: 2018-01-19
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a femoral stem prosthesis to solve the problem of poor initial stability of the existing femoral stem prosthesis primary fixation technology

Method used

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  • Femoral stem 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] According to the femoral stem prosthesis of the embodiment of the present invention, as figure 1 and figure 2 As shown, the main handle body 10 is included, and the main handle body 10 is provided with a bone cement drainage channel 40. The bone cement drainage channel 40 is used to drain the bone cement to the femoral medullary cavity 30 when the main handle body 10 is implanted into the femoral medullary cavity 30 to fix the main handle body 10 in the medullary cavity 30 of the femur.

[0027] The femoral stem prosthesis applying the technical solution of the present invention includes a main handle body 10, and a bone cement drainage channel 40 is arranged in the main handle body 1...

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Abstract

The invention provides a femoral stem prosthesis comprising a main stem body. A bone cement drainage channel is disposed in the main stem body. The bone cement drainage channel is used for draining bone cement to a femoral medullary cavity when the main stem body is embedded into the femoral medullary cavity so as to fix the main stem body in the femoral medullary cavity. In a total hip replacement surgery, when the femoral stem prosthesis is primarily fixed after being embedded into the femoral medullary cavity, the femoral stem prosthesis can be firmly fixed in the femoral medullary cavity,and the problem that primary stability of an existing femoral stem prosthesis primary fixing technology is poor is solved.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a femoral stem prosthesis. Background technique [0002] The loosening of the femoral stem prosthesis in total hip arthroplasty is the main cause of surgical failure, so the stability of the femoral stem prosthesis in the human body is an important factor affecting the service life of the femoral stem prosthesis. At present, biological fixation is the main fixation type of femoral stem prosthesis in clinical practice. [0003] Biological fixation achieves the purpose of fixation through the integration of bone tissue and the rough surface structure of the handle (such as titanium slurry spraying). However, the effective osseointegration of biological fixation takes time, and it belongs to the long-term fixation mode. [0004] The initial fixation is mostly mechanical fixation, which is to use the structure of the femoral stem and the bone to form a temporary fixation. The initi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36A61F2/46
Inventor 刘昆玺
Owner BEIJING AKEC MEDICAL
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