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Artificial hip joint femoral stem prosthesis

A femoral stem and hip joint technology, applied in the field of artificial prosthesis replacement, can solve problems such as hidden dangers at the interface, achieve good friction coefficient, improve initial stability, and provide long-term stability

Pending Publication Date: 2020-10-13
张国强 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, no matter which of the above modular prostheses, the interface of the assembly will bring hidden dangers

Method used

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  • Artificial hip joint femoral stem prosthesis
  • Artificial hip joint femoral stem prosthesis
  • Artificial hip joint femoral stem prosthesis

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Embodiment Construction

[0038] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention.

[0039] See Figure 1 ~ Figure 3 , The present invention provides an artificial hip joint femoral stem prosthesis. The femoral stem prosthesis includes a femoral stem cone 10, a femo...

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Abstract

The invention discloses an artificial hip joint femoral stem prosthesis. The femoral stem prosthesis comprises a femoral stem cone, a femoral neck and a femoral stem which are sequentially connected;the femoral stem comprises a femoral stem proximal end, a femoral stem body and a femoral stem distal end which are integrally formed; the femoral stem proximal end is divided into a femoral stem proximal end inner side and a femoral stem proximal end outer side according to the angle of the central angle of a cross section, and the central angle corresponding to the femoral stem proximal end inner side is 120 degrees; the taper of the femoral stem proximal end inner side decreases along the femoral stem from near to far; the taper of the femoral stem proximal end outer side is constant; the femoral stem distal end is of a cylindrical structure or a tapered structure. The artificial hip joint femoral stem prosthesis can adjust the anteversion angle of the femur to a normal anatomical position in cases of combined femoral anteversion angle variation and narrow medullary cavity, and has a good implantation effect, is simple to operate and facilitates large-scale popularization and use.

Description

Technical field [0001] The invention belongs to the technical field of artificial prosthesis replacement, and specifically relates to an artificial hip joint femoral stem prosthesis. Background technique [0002] In artificial total hip replacement surgery, it is necessary to obtain a good joint anteversion angle of the acetabulum and femur to achieve safe and stable hip joint activities. [0003] In the actual operation process, the placement of the acetabular prosthesis needs to take into account the coverage of the host bone. In cases of acetabular fracture, acetabular rotation osteotomy, and developmental retroversion of the acetabulum, most of the prostheses need to be placed in a neutral or even posterior. The anteversion angle of the femur itself varies greatly, especially in patients with hip dysplasia. [0004] It can be seen that in total hip arthroplasty, there is a great demand for the adjustment of the femoral anteversion angle. Due to the problem of matching the shap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36A61F2/28A61F2/30
CPCA61F2/36A61F2/3609A61F2/3662A61F2/28A61F2/30749A61F2/30771A61F2002/2825A61F2002/2832A61F2002/2828A61F2002/3625A61F2002/3006A61F2002/30784A61F2002/30108
Inventor 张国强王岩
Owner 张国强
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