Artificial femur handle and artificial full hip-joint replacement prosthesis

A technology of femoral stem and artificial femur, which is applied in the field of artificial total hip replacement prosthesis, can solve the problems of difficulty in ensuring the long-term stability of the prosthesis and the inability of the artificial hip replacement prosthesis to fit the femur, so as to improve the long-term stability , easy to remove, reduce stress shielding effect

Inactive Publication Date: 2009-04-29
BEIJING NATON TECH GRP CO LTD
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Problems solved by technology

[0009] In order to solve the technical problem that the existing artificial hip joint replacement prosthesis cannot fit well with the femur and it is difficult to ensure the long-term stability of the prosthesis, the present invention provides an artificial femur designed according to the statistical data of femur characteristics of AVN patients Replace the prosthesis with a stem to ensure that it has better matching characteristics with the femoral characteristics of AVN patients to obtain good long-term stability

Method used

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  • Artificial femur handle and artificial full hip-joint replacement prosthesis
  • Artificial femur handle and artificial full hip-joint replacement prosthesis
  • Artificial femur handle and artificial full hip-joint replacement prosthesis

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Embodiment Construction

[0028] The artificial total hip joint replacement prosthesis of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] figure 1 Shown is the structural representation of the artificial total hip replacement prosthesis of the present invention, comprising a matched artificial femoral stem 1 and an acetabular cup 4, the artificial femoral stem 1 comprising a neck section 2 and an anchoring section 3, and the acetabular cup 4 can be set on the neck segment 2, wherein the anchor segment 3 of the artificial femoral stem 1 is consistent with the anatomical curve of the corresponding part of the AVN patient.

[0030] In this embodiment, the anchoring section 3 of the artificial femoral stem 1 adopts a short stem design to retain more bone mass, and is consistent with the anatomical curve of the corresponding part of the AVN patient.

[0031] figure 2 Shown is the outline sketch map of artificial femoral handle 1, image 3 its...

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Abstract

The invention provides an artificial femur stem which comprises a neck part and an anchoring part and is characterized in that an inside curve of the anchoring part is an anatomical curve of a corresponding part of an AVN patient. The invention also provides an artificial total hip joint replacement prosthesis which comprises the femur stem. The femur stem is highly matched with femoral medullary space of the patient and can enhance the long-term stability of the replacement prosthesis.

Description

technical field [0001] The invention relates to artificial transplantation technology, in particular to a specific artificial femoral stem for avascular necrosis of the femoral head and an artificial total hip joint replacement prosthesis using the stem. Background technique [0002] Avascular Necrosis of the femoral head (AVN for short) is a common clinical disease, the cause of which is that the blood supply of the femoral head is destroyed due to various causes, leading to ischemia, necrosis, and collapse of the femoral head, often leading to severe hip joint dysfunction , is one of the common and refractory diseases. [0003] Total hip replacement is the main treatment for patients with advanced AVN. [0004] In order to solve the problem of increasing long-term loosening rate of cement-based prosthesis in artificial total hip prosthesis replacement technology, non-cemented fixation technology has been applied on the femoral stem side since the 1970s, while the applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36A61F2/32
CPCA61F2/3662A61F2002/365A61F2002/30904A61F2002/3401A61F2002/30332A61F2/36A61F2/32A61F2220/0033A61F2002/3425
Inventor 王岩郑诚功
Owner BEIJING NATON TECH GRP CO LTD
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