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Customized hip joint surgical positioning device based on medical images and matched prosthesis

A medical image and positioning device technology, applied in the field of hip joint replacement, can solve the problems of shortage of doctors for joint replacement surgery, prolong operation time, limited precision, etc., achieve effectiveness and accuracy, improve operation efficiency, reduce calibration, etc. the effect of time

Active Publication Date: 2015-02-11
SHANGHAI XINJIAN MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the rapidly growing number of patients, the number of qualified joint replacement surgery doctors in China is very short, and traditional methods are difficult to quickly train a large number of qualified doctors
[0004] The traditional artificial joint positioning method is mainly based on mechanical instruments to complete the positioning of the positioning system, the operation is complicated and the accuracy is limited
Although the computer navigation system used in surgery has been believed to replace the traditional mechanical positioning method in the past few decades and bring revolutionary changes to artificial joint surgery, until today, the existing surgical navigation system equipment is still Expensive, the positioning accuracy still needs to be improved, and at the same time requires the surgeon to receive special training, and the calibration required during the operation will inevitably prolong the operation time

Method used

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  • Customized hip joint surgical positioning device based on medical images and matched prosthesis
  • Customized hip joint surgical positioning device based on medical images and matched prosthesis
  • Customized hip joint surgical positioning device based on medical images and matched prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 2 to Figure 4 As shown, a customized positioning device for hip joint surgery based on medical images is used to accurately position the acetabular prosthesis. The positioning device includes a positioning mechanism 200 customized for each patient and a guide rod located on the inner wall of the positioning mechanism 200 , the outer surface of the positioning mechanism 200 matches the inner surface of the acetabulum 301; there is at least one guide rod, including a central guide rod 203, and a guide hole 206 is opened on the guide rod along its axis direction, and the drilling device can pass through the guide hole Drilling screws are drilled on the acetabulum, and by setting guide rods and guide holes, the position of the nails can be accurately determined to ensure the accuracy of the later installation of the acetabular prosthesis. The positioning hole is formed on the acetabulum by drilling the acetabulum, and the central positioning hole formed by t...

Embodiment 2

[0053] Such as Figure 5 , 6 As shown, the rest are the same as in Embodiment 1, the difference is that the guide rod also includes a plurality of auxiliary guide rods 205 arranged on the lateral side of the acetabulum, for forming auxiliary positioning holes on the pelvis, by setting the auxiliary guide rods , put drilling nails on the pelvis. The surgical calibration device and osteotomy device can be directly fixed on the drilling nails. The drilling nails can be used to assist in the removal of cartilage tissue and damaged acetabular bone in the acetabulum. The auxiliary positioning holes are used to assist Positioning of the acetabular prosthesis, or by setting a rigid framework on the drilling nail, the surgical calibration device and osteotomy device can be fixed on the rigid framework and indirectly fixed with the drilling nail, and the acetabular cartilage can be removed with the help of the drilling nail tissue and for acetabular component positioning, the Auxiliary...

Embodiment 3

[0055] Such as Figure 7 As shown, the rest is the same as that of Embodiment 1 except that the positioning device does not have a reference plane 204 .

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Abstract

The invention discloses a customized hip joint surgical positioning device based on medical images, a matched prosthesis and a positioning method. An eccentric positioning hole for positioning a short eccentric handle is formed in the acetabulum according to preoperative planning, meanwhile effectively cutting off damaged acetabular bone in the acetabulum based on a drilling nail corresponding to the central axis of an acetabulum prosthesis and achieving effectiveness and accuracy of the transplantation position of the acetabulum prosthesis. The positioning accuracy in operation is improved, the usage cost is reduced, meanwhile surgeons are not required to be trained specially, the prosthesis is simple and convenient to operate and install, a three-dimensional coordinate position of the prosthesis during installation is determined, the time for required calibration in operation is shortened, and operation efficiency is improved. The peripheral positioning of the acetabulum prosthesis is achieved and high-accuracy installation of the acetabulum prosthesis is ensured when the short eccentric handle is arranged on the acetabulum prosthesis and installed in the acetabulum.

Description

technical field [0001] The invention belongs to the technical field of hip joint replacement, and in particular relates to a medical image-based customized positioning device for hip joint surgery, a supporting prosthesis and a positioning method. Background technique [0002] Osteoarthritis (OA) is a chronic joint disease characterized by degeneration and destruction of articular cartilage and bone hyperplasia. Osteoarthritis has symptoms of joint pain, stiffness, deformity, and dysfunction, which directly constitute a hazard to the patient and affect the patient's health and quality of life. The incidence of osteoarthritis is closely related to age. The incidence rate of 45-64 years old is less than 30%, and the incidence rate of over 65 years old can be as high as 68%. Second to heart disease. [0003] The treatment of osteoarthritis is still a major problem facing the medical field. Conservative drug treatment often fails to achieve results, and surgery is still requir...

Claims

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Application Information

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IPC IPC(8): A61B19/00A61B17/56A61F2/32
CPCA61B17/32A61F2/4609
Inventor 刘非
Owner SHANGHAI XINJIAN MEDICAL TECH
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