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An allogeneic meniscal graft harvesting device and method

An allogeneic and harvesting device technology, which is applied in the field of meniscus transplantation, can solve the problem of postoperative recovery time of patients who affect the fixation strength of bone fragments, the reduction of bone contact area between bone fragments and the side wall of bone tunnel, and the extension of bone fragments and bone tunnels. Problems such as the bone integration time of the side wall of the bone tunnel, to shorten the bone integration time, improve the postoperative curative effect, and shorten the recovery time

Active Publication Date: 2021-12-14
PEKING UNIV THIRD HOSPITAL
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  • Abstract
  • Description
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Problems solved by technology

The obtained bone block has a square structure, while the bone tunnel used to fix the bone block has a cylindrical structure, resulting in a significant reduction in the contact area between the bone block and the side wall of the bone tunnel, thus prolonging the length of time between the bone block and the side wall of the bone tunnel. The integration time of the wall bone will ultimately affect the fixation strength of the bone block and the postoperative recovery time of the patient; secondly, directly using the pendulum saw to remove the bone will increase the risk of damage to the meniscus attachment structure

Method used

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  • An allogeneic meniscal graft harvesting device and method
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  • An allogeneic meniscal graft harvesting device and method

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[0036] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0037] The present invention provides a kind of allogeneic meniscal graft acquisition device, such as figure 1 As shown, it includes a Kirschner wire 1, an electric drill 2, a retrieving drill bit 3, a drill base 4 and a hollow screw 5; wherein, the Kirschner wire 1 is used to provide drilling guidance, and the electric drill 2 is used to provide drilling Power; the retrieving drill 3, the drill base 4 and the hollow screw 5 form an axial hollow bone-taking assembly, and through the guidance of the Kirschner wire 1 and the drilling power provided by the electric drill 2, bone grafts are obtained from the meniscus.

[0038] Such as figure 2As shown, the reclaiming ...

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Abstract

The invention provides a device and method for obtaining allogeneic meniscus grafts, which include a Kirschner wire, an electric drill, a retrieving drill, a drill base and a hollow screw; wherein the retrieving drill is provided with a cylindrical hollow drill string, hollow The free end face of the drill string is provided with axially protruding serrations; one end of the drill base is connected to the power output shaft of the electric drill, and the other end is fixedly connected to one end of the reclaiming drill. The drill base is provided with an axial hollow cavity. The hollow drill string is assembled with the axial hollow cavity of the drill bit base to form a guide cavity; the hollow screw is coaxially built in the guide cavity, and its inner diameter is set in cooperation with the diameter of the Kirschner wire. Using the allogeneic meniscus graft harvesting device to obtain the allogeneic meniscus with a cylindrical bone block structure can increase the contact area with the bone structure on the side wall of the cylindrical bone tunnel made during meniscus transplantation, thereby promoting bone formation. The integration of the block and the side wall of the bone tunnel shortens the time of bone integration.

Description

technical field [0001] The invention relates to the technical field of meniscus transplantation, in particular to an allogeneic meniscus graft acquisition device and method. Background technique [0002] The meniscus is a meniscus-shaped fibrocartilaginous tissue between the femoral condyle and the tibial plateau, and is divided into medial and lateral menisci. The meniscus is a semi-circular structure, showing a wedge-shaped structure with a thick outer periphery and a thinner inner edge, matching the cartilage of the femoral condyle, with a flat bottom surface and adapting to the tibial plateau. The meniscus is tough and elastic, which can buffer the impact of the femoral condyle and the tibial plateau during joint movement, and play a role in absorbing shock, buffering decompression, lubricating the joint, and maintaining joint stability. [0003] With the increasing frequency and intensity of people participating in sports, the incidence of meniscus injury is also incre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/16
CPCA61B17/1675A61B17/1604A61B17/1615
Inventor 闫文强敖英芳胡晓青程锦
Owner PEKING UNIV THIRD HOSPITAL
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