Meniscus transplanting bone bolt fixing technology and device

Abstract

The invention relates to a meniscus transplanting bone bolt fixing technology and device and belongs to the field of medical devices. The meniscus transplanting bone bolt fixing device comprises two groups of components which are a group of bone bolts (bone bolt devices) for manufacturing standard sizes of allogenic meniscus front and rear angels and a group of bone tunnels (bone tunnel devices) for manufacturing the bone bolts for accommodating meniscus front and rear angles on a receptor tibial plateau. Each bone bolt device comprises a cone-shaped hollow drill (1) and a guide pin (2). Each bone tunnel device comprises an eccentric bone drill bit (3) and a drill bit (4). By X-rays and computed tomography (CT) scanning measurement, a donor which has the meniscus dimensions 10% larger than those of a receptor is selected, an allogenic inner side meniscus is made into front and rear angle dead point bone bolt belt completed meniscus on an operating table, and stitches which cannot be absorbed penetrate into drilled holes for reserve.

Description

technical field [0001] The invention relates to a meniscus graft bone plug fixation technology and an instrument, belonging to the field of medical instruments. Background technique [0002] For patients with unicompartmental degeneration of the knee joint caused by meniscectomy, allogeneic meniscus transplantation is an alternative treatment method, and it is currently the only widely used clinical meniscus reconstruction technique. Early meniscus transplantation was done by open surgery. Although there are literatures that the results of open surgery are similar to those of arthroscopic minimally invasive surgery, arthroscopic minimally invasive surgery has less damage and preserves the integrity of the collateral ligaments, making it easier recover. Moreover, arthroscopic surgery has a more adequate and clear view of the joint, and can treat concomitant injuries in the knee joint. However, at present, the arthroscopic minimally invasive surgery of meniscus transplantati...

AI Technical Summary

Problems solved by technology

[0005] However, no matter what method is used, the biggest difficulty in meniscus transplantation today is that there are no standardized surgical instruments. Especially for bone plug fixation, doctors can only rely on bare hands and naked eyes to make bone plugs. The size of the bone canal can only be estimated visually and manually, and repeated comparisons, changes, and pruning. There are no standardized surgical instruments that can be used to make standardized bone plugs. The shape cannot be matched, and repeated changes and corrections not only prolong the operation time, but also greatly reduce the accuracy of the operation. In the end, it is difficult to achieve the best stability of the fixation of the anterior and posterior angles of the meniscus.

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