A Minimally Invasive Collagen Membrane Holder for Tissue-Engineered Cartilage Transplantation

Abstract

A minimally invasive collagen membrane retainer used for tissue engineering cartilage grafting comprises a body, a first clamping arm set, a second clamping arm set and a control mechanism for driving the first clamping arm set and the second clamping arm set to close. The two clamping arms are located at the front end of the body. The control mechanism comprises a sliding assembly and a connection rod assembly which are in driving connection, and the connection rod assembly is connected with the first and second clamping arm sets and used for driving the first clamping arm set to overlap in the extending direction. According to the retainer, the two clamping arm sets are overlapped under the drive of the sliding assembly and the connection rod assembly, a collagen membrane is clamped, the sliding assembly moves to the body and drives the connection mechanism, the connection rod mechanism makes the clamping arm sets extend forward to the body and overlap, and clamping is achieved. Compared with operating forceps and retainers in the prior art, the expanded area is small, surgical wounds are not expanded, and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of orthopedic surgical instruments, in particular to a minimally invasive collagen film holder for tissue engineered cartilage transplantation. Background technique [0002] Articular cartilage defect is a common disease, often caused by sports injuries, and occurs in young people who exercise a lot. In my country, the articular cartilage injury rate is as high as 10-17%. Long-term wear and tear of defective cartilage can lead to degenerative bone and joint disease, which can eventually develop into total osteoarthritis. Gerber et al. followed up 1321 patients with articular cartilage injury with an average age of 36, and found that about 13.9% of patients had completely developed knee osteoarthritis at the age of 65, which was 5.2 times higher than that of people without a history of articular cartilage injury . In my country, there are about 100 million patients with osteoarthritis, and the trend is inc...

AI Technical Summary

Problems solved by technology

[0005] In the process of tissue-engineered cartilage transplantation, since there are no special surgical instruments under arthroscopy, open surgery is required, and the periosteum or biomembrane can be sutured in the joint after the cartilage injury site is exposed, and then the cell replantation operation can be performed after suturing. The resulting incision greatly affects the appearance, and lacks the magnification and monitoring function of the arthroscopic, only relying on the operator's own surgical experience, so special equipment for cartilage transplantation under the microscope is needed, so that the chondrocyte transplantation under the arthroscope becomes possible.

[0006] The first thing that needs to be solved is the arthroscopic clamping of the collagen membrane. At present, there is no type of arthroscopic surgical instrument dedicated to cartilage transplantation, and the biological collagen membrane used for autologous chondrocyte transplantation is very fragile and easily damaged.

However, the existing arthroscopic instruments all use nucleus pulposus forceps, but the nucleus pulposus forceps cannot perform delicate and gentle operations

[0007] Therefore, in view of the existing problems in the prior art, it is particularly important to provide a minimally invasive collagen membrane holder technology for tissue engineered cartilage transplantation with fine operation and small expansion range.

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