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Tibial prosthesis holder

A technology of grippers and prostheses, applied in the direction of knee joints, joint implants, joint implants, etc., can solve the problem of inconvenient removal of tibial prosthesis

Pending Publication Date: 2021-07-06
青岛山大齐鲁医院(山东大学齐鲁医院(青岛))
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the technical defect that the tibial prosthesis that is driven into the inside of the tibia is not yet conveniently taken out in the prior art, so that when performing tibial revision surgery, the tibial prosthesis is inconvenient to take out, thereby Provides a tibial prosthesis holder for assisting in the removal of tibial prostheses

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0041] This embodiment provides a tibial prosthesis holder, such as Figure 5-6 As shown, it includes a holding base 1, a central shaft 2, a drive nut 3, a holding arm 4 and a pole 5;

[0042] Wherein, the holding base 1 has a hollow inner cavity 10, and the central shaft 2 is movably inserted into the hollow inner cavity 10 to realize installation; the driving nut 3 is installed on the holding base 1, and is used to drive the central shaft 2 to move up and down relative to the holding base 1 , and can limit the position of the central axis 2 when the central axis 2 is driven to reach the target position; the holding arm 4 is rotatably installed on the holding seat 1, and the end is provided with a holding end 41, which is suitable for connecting with the tibial dummy One end of the support rod 5 is rotatably installed on the central shaft 2, and the other end is rotatably mounted on the handle arm 4. When the central shaft 2 moves up and down, the support rod 5 moves up and d...

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Abstract

The invention provides a tibial prosthesis holder. The tibial prosthesis holder comprises a holding seat, a middle shaft, a driving nut, a holding arm and a supporting rod, wherein the holding seat is provided with a hollow inner cavity, and the middle shaft is movably inserted into the hollow inner cavity to realize installation; the driving nut is mounted on the holding seat, is used for driving the middle shaft to move up and down relative to the holding seat, and can limit the position of the middle shaft when driving the middle shaft to reach a target position; the holding arm is rotatably mounted on the holding seat, and the end part of the holding arm is provided with a holding end suitable for being matched and connected with a tibial prosthesis; and one end of the supporting rod is rotatably mounted on the middle shaft, the other end of the supporting rod is rotatably mounted on the holding arm, and when the middle shaft moves up and down, the supporting rod moves up and down along with the middle shaft to drive the holding arm to open or retract inwards, so that the holding end is controlled to be separated from or combined with the tibial prosthesis. According to the tibial prosthesis holder, the tibial prosthesis can be taken out rapidly, and therefore the operation efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical instruments, in particular to a gripper used for taking out a tibial prosthesis. Background technique [0002] Total knee replacement is an effective treatment for end-stage knee arthritis. Due to the remarkable clinical effect, the number of operations has increased year by year in recent years. Although the curative effect is satisfactory, about 1% of patients still suffer from knee joint infection every year, or wear or loosen the knee joint prosthesis in the first 15-20 years after surgery, requiring knee joint revision. [0003] The existing knee joint prosthesis comprises: a femoral prosthesis, a tibial prosthesis, and a liner between the femoral prosthesis and the tibial prosthesis. The structure of the tibial prosthesis is Figure 1-2 As shown, it includes a platform holder 01, the platform holder 01 has a top surface 02 and a bottom surface 03, the top surface 02 is provided ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46
CPCA61F2/461
Inventor 孔杰张鹏杜建春万连平
Owner 青岛山大齐鲁医院(山东大学齐鲁医院(青岛))
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