Minimally invasive surgical instrument for tissue engineered cartilage transplantation

Abstract

The invention discloses a minimally invasive surgery instrument for tissue-engineered cartilage transplantation. According to the minimally invasive surgery instrument, the technical problems of clamping and fixation of a collagen membrane under an arthroscope during sewing are solved. The minimally invasive surgery instrument comprises forceps, wherein two forceps heads are arc-shaped bent heads, through holes are uniformly formed along the surface of the forceps head at the upper end and penetrate through the upper and lower end surfaces, and a first separation part is arranged between every two adjacent through holes; grooves corresponding to the positions of the through holes are formed at intervals along the peripheral wall of the outer diameter of the forceps head at the lower end, a second separation part is arranged between every two adjacent grooves, and a rectangular tooth-shaped structure is formed between the grooves and the second separation parts. Compared with the prior art, the minimally invasive surgery instrument has the advantages that a clamper for the arc-shaped bent heads is arranged, and holes and teeth are respectively formed in and arranged on the two forceps heads and form sewing holes after being folded, so that the clamping and fixation problems of the collagen membrane under the arthroscope during the sewing are solved.

Description

technical field [0001] The invention relates to a medical instrument, in particular to a minimally invasive surgical instrument for bone 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. In my country, there are about 100 million patients with osteoarthritis, and the trend is increasing, and a considerable proportion of people need knee replacement. [0003] Minimally invasive surgery is one of the high-tech achievements of high-tech surgery in the field of clinical medicine across the century. A representative of minimally invasive surgical instruments is an endoscope. For example, using a keyhole-sized hole or a small incisio...

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 use nucleus pulposus forceps for clamping under the microscope, but the nucleus pulposus forceps cannot perform fine and gentle operations, and it is also not conducive to the suture of soft materials such as collagen membranes.

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