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Femoral stem

A femoral stem and stem body technology, applied in the field of medical equipment, can solve problems such as instability of the femoral stem prosthesis, and achieve the effect of increasing stability

Active Publication Date: 2015-08-12
天衍医疗器材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a femoral stem to solve the problem of instability of the femoral stem prosthesis in the prior art after implantation

Method used

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Embodiment Construction

[0026] 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.

[0027] like figure 1 As shown, in the present embodiment, the present invention provides a femoral stem, one end of the femoral stem body 10 is provided with a column hole 11, and the outer peripheral surface of one end of the femoral stem body 10 corresponding to the column hole 11 is provided There is a movable insert 12, and the plunger 20 is disposed in the post hole 11 and pushes the insert 12 at the initial position in the post hole 11 to protrude toward the outside of the outer peripheral surface, so that the insert 12 is located at the insertion position.

[0028] In this embodiment, a column hole 11 is provided at one end of the femoral stem body 10, and a movable insert 12 is arrange...

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Abstract

The invention provides a femoral stem. According to the femoral stem, a column hole is formed in one end of a femoral stem body, a movable inserting piece is arranged on the peripheral face of the end corresponding to the femoral stem body of the column hole, a plugging column is arranged in the column hole and drives the inserting piece located on an initial position in the column hole to extend out towards the outside of the peripheral face to enable the inserting piece to be located in an inserting position. The column hole is formed in one end of the femoral stem body, the movable inserting piece and the plugging column inserted into the column hole are arranged on the peripheral face of the end corresponding to the femoral stem body of the column hole, the inserted plugging column drives the inserting piece located on the initial position in the column hole to extend out towards the outside of the peripheral face to enable the inserting piece to be located in the inserting position. Through the arrangement of the inserting piece with the inserting position at one end of the femoral stem body, after a femoral stem prosthesis with the inserting piece is implanted into the human body, the inserting piece on the femoral stem prosthesis is inserted into the physiological bones, and the stability of the implanted femoral stem prosthesis in the implantation later period is increased.

Description

technical field [0001] The invention relates to medical equipment, in particular to a femoral stem. Background technique [0002] Prosthesis loosening is the main cause of prosthesis failure, so the stability of the prosthesis in the human body is an important factor affecting the service life of the prosthesis. The femoral stem prosthesis in the prior art adopts the method of proximal coating treatment, and utilizes the medium and long-term physiological bone to grow into the coating of the femoral stem prosthesis to ensure the long-term stability of the femoral stem prosthesis. [0003] The disadvantage of the prior art is that the initial stability of the prosthesis after the initial stage of implantation cannot be well guaranteed. Contents of the invention [0004] The main purpose of the present invention is to provide a femoral stem to solve the problem of instability after implantation of the femoral stem prosthesis in the prior art. [0005] In order to achieve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/32
Inventor 马淑芹
Owner 天衍医疗器材有限公司
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