Knee arthroscopic meniscal stitching needle

Abstract

The invention discloses a knee arthroscopic meniscal stitching needle. The stitching needle comprises a hollow needle body (1), a pulley (2), a handle (3), a lead inlet hole (4), and a needle tip (5), wherein the needle body (1) comprises a front part, a back part arranged opposite to the front part, and a middle part for connecting the front part with the back part; the front part of the needle body (1) is provided with the needle tip (5) while the back part of the needle body (1) is provided with the handle (3); the front part of the handle (3) is provided with the pulley (2); the back part of the pulley (2) is provided with the lead inlet hole (4); and the lead penetrates from the lead inlet hole (4) and then is drawn out from the needle tip (5) through the pulley (2). The stitching needle is beneficial to fixing the lead in the puncture process, so that the damages to peripheral tissues and the meniscus in the puncture process are reduced.

Description

technical field [0001] The invention relates to a medical operation instrument, in particular to a meniscus suture needle under knee arthroscopy. Background technique [0002] In recent years, with the widespread popularization of sports and the aging population, there are more and more knee meniscus injuries. In the past, partial meniscectomy or total meniscectomy was often used to treat meniscus injury, and most patients received good results. However, in some patients after meniscectomy, the coupling disorder of the knee joint, the joint degeneration is aggravated, the cartilage wear is increased, and osteoarthritis occurs prematurely. [0003] The meniscus is a normal tissue in the knee joint. It is between the femoral condyle and the tibial plateau. It is like a buffer, protecting the articular surface of the two, absorbing the shock transmitted downward, and spreading the force from point to surface. , reduce local stress; in addition, the meniscus can also stabilize...

AI Technical Summary

Problems solved by technology

However, the total internal suture technique is only suitable for the meniscus body and part of the posterior horn injury; the other part of the meniscal posterior horn injury needs to be sutured with the inside-out technique

However, there is still no good clinical solution for the injury of the anterior horn of the meniscus with a relatively high incidence rate, and it still needs to be sutured manually from the outside to the inside.

[0005] At present, spinal cord needles are commonly used for meniscal suture clinically. The disadvantage is that the needle is blunt, the puncture is laborious, and the damage to the surrounding tissue and meniscus is greater; therefore, sometimes clinicians use 18G syringe needles to suture the meniscus. It is relatively sharp, which reduces the damage to the surrounding tissue and meniscus; its disadvantage is that the needle tube is short, and the length is often not enough when suturing the front corner

In addition, it has been found in clinical applications that no matter whether a spinal needle, a syringe needle, or the existing meniscus suture needle is used, the suture cannot be fixed on the puncture needle when the meniscus is punctured, and the lead wire often falls off during the puncture process or the puncture needle After penetrating the meniscus, because the puncture needle communicates with the joint, the huge fluid pressure in the joint will push the suture out of the joint, requiring re-threading or even repeating the puncture, making the meniscus suture more cumbersome and increasing the operation time and trauma

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