Curved Serrated Scissors Meniscus Trimmer

Abstract

The invention is an arc-shaped sawtooth scissors meniscus trimmer, relates to a meniscus minimally invasive trimming surgical instrument, which can also be used for tissue excision in narrow gaps, and belongs to the field of medical instruments. The present invention has two annular handles, which are respectively connected to the main rod and the auxiliary rod. The main rod has a concave chute, and the auxiliary rod is located in the chute of the main rod. The front ends of the main rod and the auxiliary rod are scissor blades, which are in the shape of a 45-degree arc, which conforms to the physiological curvature of the meniscus. The scissor blades of the main rod are fixed, and the scissor blades of the auxiliary rod can be opened and closed. The finely serrated cutting edges of the scissors hold and bite the meniscal tissue that needs to be trimmed. When the handle of the sub-rod of the present invention moves closer to the handle of the main rod, the sub-rod slides backward along the chute of the main rod, so that the scissors of the sub-rod are closed with the scissors of the main rod, and the sawtooth of the cutting edge is fixed and bites the meniscus to be removed organize. When the handle of the auxiliary rod is separated from the handle of the main rod, the auxiliary rod slides forward along the chute of the main rod, so that the scissors of the auxiliary rod are separated from the scissors of the main rod, and the process of cleaning the meniscus is completed.

Description

technical field [0001] The invention relates to a meniscus trimming instrument, in particular to an arc-shaped sawtooth scissors minimally invasive meniscus repair surgical instrument, which belongs to the field of medical instruments. Background technique [0002] The meniscus is a layer of fibrocartilage located between the femur and the tibia of the knee joint. It is divided into inner and outer meniscus, which is half-moon-shaped. It is a necessary structure of the knee joint and plays an important role in maintaining joint stability, cushioning movement shocks, and protecting articular cartilage. . The position and special structure of the meniscus make it easy to cause damage or wear under the action of external force. The blood supply of the meniscus is poor, and it is not easy to heal on its own. The damaged or worn meniscus not only cannot bear the original function, but also damages other structures of the knee joint, resulting in traumatic arthritis. Therefore, ...

AI Technical Summary

Problems solved by technology

However, when using existing surgical instruments to treat such meniscus injuries, such as meniscus blue forceps and meniscectomy bite forceps (CN202409047 U), there are many disadvantages, such as difficult to grasp the resection range, easy to overremove, especially for worn menisci. The rough edge of the meniscus makes it more difficult to grasp the scope of cleaning; the secondary damage of the meniscus is relatively large, which accelerates the development of traumatic arthritis after surgery; the use of instruments is limited by the angle, and the operation is inconvenient, which leads to prolonged operation time and increases the risk of complications such as infection. Probability of occurrence; the operation process of the device is complicated, it is difficult for young doctors to master, and the learning time is long

Images