Meniscal stitching needle used for arthroscopic knee surgery

Abstract

The invention discloses a meniscal stitching needle used for arthroscopic knee surgery. The stitching needle comprises a needle tubing, a handle which covers one end of the needle tubing, and a lead blocking device arranged in the handle, wherein the handle is provided with a needle tubing mounting slot, a lead through slot, a cavity and a mounting hole; the needle tubing mounting slot and the lead through sot are coaxial; the cavity is arranged between the needle tubing mounting slot and the lead through slot; the mounting hole is arranged on the side wall of the handle and is communicated with the cavity; the needle tubing is fixedly arranged in the needle tubing mounting slot; the lead blocking device comprises a button, a connection pipe and a spring; the connection pipe is arranged in the cavity and parallel to the axial direction of the needle tubing; the button runs through the mounting hole and then is connected with the upward side of the connection pipe; one end of the spring is fixed at the bottom of the cavity and the other end of the spring is connected with the lower side of the connection pipe; when the button is compressed, the connection pipe is limited by a locating device arranged in the cavity, at this time, the axis of the connection pipe is coincided with the axis of the needle tubing mounting slot and the lead through slot, in this way, the lead through slot is communicated with the needle tubing; and the connection pipe resets under the action of the spring when the button is released.

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 all-inside suture technique is only suitable for partial meniscus body and posterior horn injuries; 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 cord 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 or the puncture needle After penetrating the meniscus, because the puncture needle is connected to the joint, the huge fluid pressure in the joint will push the suture out of the joint, requiring re-threading or even repeated puncture, which makes the meniscus suture more cumbersome and increases the operation time and trauma

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