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Parallel acetabulum distraction device

A technology of acetabular and sliding devices, applied in the direction of acetabular socket, hip joint, joint implants, etc., can solve the problems of inability to open the acetabulum in parallel, unfavorable implantation of acetabular components, etc., and achieve convenient operation Effect

Pending Publication Date: 2022-03-01
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the related technologies mentioned above, the inventor believes that when the acetabulum is propped open by the doctor's hands in the total hip joint revision surgery, the acetabulum cannot be propped in parallel accurately, which is not conducive to the implantation of the acetabular component

Method used

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Embodiment Construction

[0046] The following is attached Figure 1-4 The application is described in further detail.

[0047] The embodiment of the present application discloses a parallel acetabular expansion device. refer to figure 1 , a parallel acetabular distraction device comprising a spreader 1, a spring leaf 2 fixedly connected to the spreader 1 by a screw at one end, and a rack 3 fixedly connected to the spreader 1 by a screw at one end.

[0048] refer to figure 1 The spreading forceps 1 includes a first forceps arm 11 and a second forceps arm 12 hinged to the first forceps arm 11 through screws.

[0049] combine figure 1 , figure 2, taking the joint of the first tong arm 11 and the second tong arm 12 as the boundary, one end of the first tong arm 11 is processed to form a first curved section 112, and the part of the first tong arm 11 that has not been processed is the first body Segment 111 , the first body segment 111 is longer than the first curved segment 112 . A first notch 112...

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Abstract

The invention relates to a parallel acetabulum distraction device which comprises distraction forceps, a parallel sliding device rotationally connected to the distraction forceps and two screwing-in rods detachably connected to the end, away from the distraction forceps, of the parallel sliding device. The parallel sliding device comprises a distraction arm, a first sliding plate connected to the distraction arm and a second sliding plate connected to the distraction arm, the first sliding plate and the second sliding plate are rotationally connected, and the connecting point of the first sliding plate and the second sliding plate is located at the middle point of the length of the first sliding plate and the length of the second sliding plate; the number of the distraction arms is two, one end of each distraction arm is rotationally connected to the distraction clamp, and one end of the first sliding plate and one end of the second sliding plate are rotationally connected to the two ends of the distraction clamp respectively. The end, away from the distraction clamp, of the first sliding plate is connected to one distraction arm in a sliding mode, and the end, away from the distraction clamp, of the second sliding plate is connected to the other distraction arm in a sliding mode. The acetabulum parallel distraction device has the effect of accurately distraction acetabulum in parallel.

Description

technical field [0001] The present application relates to the field of medical devices, in particular to a parallel acetabular expansion device. Background technique [0002] Hip replacement surgery is to replace the patient's diseased joint by implanting an acetabular cup component into the acetabulum of the patient's body, thereby helping the patient rebuild the normal function of the hip joint. However, after primary hip replacement surgery, the acetabular cup component becomes damaged due to long-term activities of the patient, and total hip revision surgery is required. [0003] Total hip revision surgery is the removal of the initially implanted acetabular component and the insertion of a new acetabular component. However, when the doctor removes the initial acetabular cup components, the bone mass around the acetabulum will be lost, so the acetabular cup components implanted later will be larger than the initial acetabular cup components. Doctors need to use the ace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46
CPCA61F2/46A61F2/4609
Inventor 周勇刚刘华丰王金博韩江浩
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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