Flexible probe assembly for human tumor cryotherapy

Abstract

The embodiment of the invention discloses a flexible probe assembly for human tumor cryotherapy. The flexible probe assembly comprises an outer sleeve and a probe main body nested in the outer sleeve,wherein the probe main body comprises a needle part located at the foremost end and a needle rod part far away from the needle part; a flexible connecting section is arranged between the needle partand the needle rod part; and one end, far away from the needle part, of the needle rod part is connected with a handle part; the probe assembly further comprises a medium inlet opening, a medium backflow opening and a medium passage; at least part of the medium passage is located in the probe main body and communicated with the medium inlet opening and the medium backflow opening; a heat insulation layer is arranged on an outer side wall of at least part of the medium passage; the flexible connecting section is of a cavity structure formed by sequentially connecting a plurality of hollow condyle units in series; and a direction adjusting rope is arranged in the cavity structure. The flexible probe assembly can integrate three operations into one needle, and is flexible and efficient.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a flexible probe assembly for cryotherapy of human tumors. Background technique [0002] For a long time, rational treatment of human tumor tissue has been the goal pursued by clinical hospitals. So far, various approaches such as radiation therapy, chemotherapy, hyperthermia and cryoablation have been developed. It has many advantages such as large size, wide indications and immunological effects, and has been widely recognized by experts. The basic principle of cryoablation therapy is to freeze tumor cells to form ice crystals in the cells and destroy the cells, so as to achieve the purpose of destroying cancerous cells. [0003] However, the clinical use of cryoablation needles for tumors is still limited to a certain extent. For certain cavity tumors such as lung cancer and rectal cancer, it is required that the inserted cryoablation needles should be flexible to minimize the ...

AI Technical Summary

Problems solved by technology

[0003] However, the clinical use of cryoablation needles for tumors is still limited to a certain extent. For certain cavity tumors such as lung cancer and rectal cancer, it is required that the inserted cryoablation needles should be flexible to minimize the The tissue damage caused by the ablation needle during its natural sliding into the lumen (such as alveoli, etc.); , the traditional puncture needle cannot change the direction of puncture after entering the human body with the help of a navigation system (CT, ultrasound or nuclear magnetic resonance, etc.) because the entire needle body is made of metal material. Traditional ablation needles cannot achieve the above goals at all when they are in an out-of-plane position relationship with the puncture path (usually a venous vessel)

[0004] In addition, traditional ablation needles cannot achieve the function of biopsy sampling of targeted tissues, and can realize the removal of diseased tissues from patients by cutting, clamping or puncturing for pathological examination

The biopsy sampling needle and the cryoablation needle are independent, and doctors cannot use them more conveniently and flexibly

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