Three-phase support

Abstract

The invention discloses a three-phase support, which comprises a bone support, a cartilage support and a tendon support stacked and integrated sequentially from top to bottom. A plurality of bone book pages extending to the bone-fixed page; one end of the cartilage support is set as the cartilage-fixed page, and the other end of the cartilage support is cut transversely with multiple cartilage-like book pages extending to the cartilage-fixed page One end of the tendon bracket is set as the tendon fixation wrapping part, and the other end of the tendon bracket is cut transversely with multiple tendon-like sheets extending to the tendon fixation wrapping part; The cartilage leaf at the top is connected, and the cartilage leaf at the bottom of the cartilage support is connected with the tendon leaf at the top of the tendon support. The three-phase scaffold has the advantages of simple preparation, convenient use, reduced decellularization time, and improved repair quality.

Description

Technical field [0001] The invention mainly relates to the repairing technology of the defect of the bone and tendon connection point, in particular to a three-phase bracket. Background technique [0002] Injury at the junction of bone and tendon (such as patellar-patellar tendon injury) is a common motor system disease, and its incidence has been increasing year by year. Its treatment has brought a heavy economic burden to society and families. A typical bone-tendon junction consists of a four-layer structure of bone, mineralized fibrocartilage, unmineralized fibrocartilage and tendon. Different from the repair of the same type of tissue (such as bone-bone, tendon-tendon) after injury, the repair of bone and tendon injury occurs between two completely different structures of bone and tendon. After bone and tendon injury, there is often a fibrocartilage layer. The damage of this part, poor blood supply and weak regeneration ability, causes the repair of bone and tendon injury to...

AI Technical Summary

Problems solved by technology

[0003] The traditional method of treating bone-tendon junction injuries often uses various surgical suture techniques to directly fix the tendon or ligament to the bone. The bone-tendon junction is filled with fibrous scar tissue in the early stage, and the reconstruction of its characteristic fibrocartilage layer is incomplete. The regeneration of the gradient structure, so it cannot effectively disperse the stress and prevent the avulsion of the bone-tendon junction, and the reconstructed bone-tendon structure is prone to rupture again after returning to sports

In recent years, with the improvement of surgical methods and the development of postoperative rehabilitation measures, great progress has been made in the healing of bone-tendon junctions, but the injured bone-tendon junctions still cannot fully restore to the normal tissue gradient structure, and their healing The effect is unsatisfactory

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