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Prosthesis extractor for hip joint replacement

A hip joint replacement and extractor technology, which is applied in the directions of hip joints, joint implants, joint implants, etc., can solve the problem that the hip joint prosthesis is not easy to take out.

Pending Publication Date: 2021-06-18
THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem that the existing hip joint prosthesis is not easy to take out, the present invention provides a prosthesis extractor for hip joint replacement

Method used

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  • Prosthesis extractor for hip joint replacement
  • Prosthesis extractor for hip joint replacement
  • Prosthesis extractor for hip joint replacement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 A kind of prosthesis extractor for hip arthroplasty

[0034] A prosthesis extractor for hip joint replacement, which includes: a cylinder 3 clamping the cylindrical section of the hip joint prosthesis 1; it is characterized in that the first end of the cylinder 3 is sleeved on the cylindrical section of the prosthesis, and Along the radial direction of the cylinder body 3, the long rod 2 for radially locking the cylindrical section of the prosthesis is arranged on the side wall of the cylinder body 3; the long rod 2 is set as a threaded rod 202 that moves radially along the cylinder body 3, and Threads engaged with the threaded rod 202 are set through the side wall of the cylinder body 3; along the axial direction of the cylinder body 3, an axial locking mechanism 4 for axially locking the cylindrical section of the prosthesis is provided in the cylinder body 3; A draw-in groove 304 for the doctor to grab the cylinder body 3 is set on the outer wall of the ...

Embodiment 2

[0040] Embodiment 2 A kind of prosthesis extractor for hip arthroplasty

[0041] A prosthesis extractor for hip joint replacement, which includes: a cylinder 3 clamping the cylindrical section of the hip joint prosthesis 1; it is characterized in that the first end of the cylinder 3 is sleeved on the cylindrical section of the prosthesis, and Along the radial direction of the cylinder body 3, the long rod 2 for radially locking the cylindrical section of the prosthesis is arranged on the side wall of the cylinder body 3; the long rod 2 is set as a threaded rod 202 that moves radially along the cylinder body 3, and Threads engaged with the threaded rod 202 are set through the side wall of the cylinder body 3; along the axial direction of the cylinder body 3, an axial locking mechanism 4 for axially locking the cylindrical section of the prosthesis is provided in the cylinder body 3; A draw-in groove 304 for the doctor to grab the cylinder body 3 is set on the outer wall of the cy...

Embodiment 3

[0046] Embodiment 3 A kind of prosthesis extractor for hip replacement

[0047] A prosthesis extractor for hip joint replacement, which includes: a cylinder 3 clamping the cylindrical section of the hip joint prosthesis 1; it is characterized in that the first end of the cylinder 3 is sleeved on the cylindrical section of the prosthesis, and Along the radial direction of the cylinder body 3, the long rod 2 for radially locking the cylindrical section of the prosthesis is arranged on the side wall of the cylinder body 3; the long rod 2 is set as a threaded rod 202 that moves radially along the cylinder body 3, and Threads engaged with the threaded rod 202 are set through the side wall of the cylinder body 3; along the axial direction of the cylinder body 3, an axial locking mechanism 4 for axially locking the cylindrical section of the prosthesis is provided in the cylinder body 3; A draw-in groove 304 for the doctor to grab the cylinder body 3 is set on the outer wall of the c...

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Abstract

The utility model discloses a prosthesis extractor for hip joint replacement. The prosthesis extractor comprises a cylinder body used for clamping a hip joint prosthesis cylindrical section, and is characterized in that the first end of the cylinder body is sleeved with the prosthesis cylindrical section, and a long rod for locking the prosthesis cylindrical section in the radial direction is arranged on the side wall of the cylinder body in the radial direction of the cylinder body; an axial locking mechanism for axially locking the prosthesis cylindrical section is arranged in the cylinder body along the axial direction of the cylinder body; and a clamping groove for a doctor to grab the cylinder body is formed in the outer wall of the cylinder body. During use, coaxial fixation of the hip joint prosthesis and the cylinder body is achieved through the long rod and the axial locking mechanism, and then the doctor pulls out the hip joint prosthesis from the body of a patient through the groove in the outer wall of the cylinder body.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a prosthesis extractor for hip joint replacement. Background technique [0002] As the main weight-bearing joint, the hip joint has a high incidence of damage. Once the disease occurs, it often limits the function of the hip joint and seriously affects the quality of life. Hip replacement surgery, as an effective solution, has been accepted by more and more patients. [0003] Hip joint replacement, also known as artificial hip replacement, is to fix the artificial prosthesis, including the femoral part and the acetabular part, on the normal bone with bone cement and screws to replace the diseased joint and reconstruct the normal state of the patient's hip joint. Function, is a more mature and reliable treatment. This procedure involves replacing the joint surface damaged by disease or injury with an artificial prosthesis. However, in clinical orthopedic surgery, there are many r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46
CPCA61F2/4607
Inventor 韩永台刘思凯刘勃吴涛
Owner THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV
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