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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: 2018-03-23
天衍医疗器材有限公司
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  • Summary
  • 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] Such as 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 arra...

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Abstract

The invention provides a femoral stem, comprising: one end of the femoral stem is provided with a column hole, a movable insert is provided on the outer peripheral surface of one end of the femoral stem corresponding to the column hole, and a plug is arranged on the column The insertion piece located in the initial position in the column hole is pushed into the hole and protrudes toward the outer side of the outer peripheral surface, so that the insertion piece is located at the insertion position. A column hole is provided at one end of the femoral stem stem body, a movable insert is arranged on the outer peripheral surface of one end of the femoral stem stem body corresponding to the column hole, and a plug is inserted into the column hole. Pushing the insert located at the initial position in the column hole to protrude toward the outer side of the outer peripheral surface, so that the insert is located at the insertion position. By arranging an insert with an inserting position at one end of the femoral stem stem body, after the femoral stem prosthesis with the insert is placed in the human body, the insert on the femoral stem prosthesis is inserted into the physiological bone of the human body, increasing the The stability of the implanted femoral stem prosthesis in the post-implantation period.

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 Patents(China)
IPC IPC(8): A61F2/32
Inventor 马淑芹
Owner 天衍医疗器材有限公司