Microwave ablation needle

Abstract

The invention discloses a microwave ablation needle, which comprises a needle rod, a needle handle, a needle tube and a cable; one end of the needle tube is fixed on the needle handle, and the needlerod is arranged in the needle tube; the needle tube comprises a first needle tube, a second needle tube, a third needle tube and a fourth needle tube which are connected in sequence; the cable is arranged in the needle tube; the needle rod is arranged in the fourth needle tube; one end of the cable is connected with a cable connecting part of the needle rod; the other end of the cable passes through a cable accommodating pipeline; the cable comprises a sheath, a conductive wire, a flexible shaft and a rack which are arranged outside; the conductive wire and the flexible shaft are arranged in the sheath; and the rack is arranged at the end, away from the needle rod, of the cable and fixedly connected with the flexible shaft. After the microwave ablation needle is bent, the needle tube doesnot influence the normal operation of a cooling circulation device; the flexible shaft in the cable is used for driving the needle rod to move, so that the movement of the needle rod is not influencedwhen the ablation needle is bent; a gear rack device is used for driving the cable to move, and the moving size is more accurate.

Description

technical field [0001] The invention belongs to the technical field of cardboard processing, and in particular relates to a microwave ablation needle. Background technique [0002] Microwave ablation is a highly efficient, rapid, uniform heating, thorough thermal coagulation, easy to use and safe treatment method for tumor tissue. It has been widely used in clinic for many years. At present, the needle tips of most ablation needles are straight, [0003] With the deepening of clinical practice, clinical requirements for microwave ablation needles (microwave radiation antenna) are also getting higher and higher. Usually, in order to prevent the needle of the microwave ablation needle from being bent or broken during puncturing, the catheter is first punctured, and then the ablation needle is punctured along the direction of the catheter. The general operation process of the microwave ablation needle is as follows: first, plan the puncture path through CT scan; through reali...

AI Technical Summary

Problems solved by technology

[0004] However, when it is difficult to plan the puncture route, it is necessary to bypass some major organs that are not conducive to puncture. For example, in the treatment of uterine fibroids, microwave ablation through abdominal puncture not only artificially destroys the integrity of the endometrium, but also easily causes adjacent Intestinal and bladder injuries, so it is necessary to develop a microwave ablation needle antenna that can be bent by itself

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