Multi-jaw active conformal ablation needle with function of magnetic control

Abstract

The invention discloses a multi-jaw active conformal ablation needle with a function of magnetic control and belongs to the technical field of medical care equipment. The multi-jaw conformal ablationneedle comprises flexible ablation electrodes, electromagnetic coils, a main needle and a magnetic part, wherein the number of the flexible ablation electrodes and the electromagnetic coils is N whichis more than or equal to 2; the N flexible ablation electrodes are circumferentially distributed around the main needle; each electromagnetic coil winds around the respective flexible ablation electrode; and the magnetic part is fixed on the main needle. When the multi-jaw active conformal ablation needle works, the strength and direction of a magnetic field formed around each electromagnetic coil by controlling the strength and direction of the current in the electromagnetic coil, the strength and direction of the magnetic force between the electromagnetic coils and the magnetic part can becontrolled, and the electromagnetic coils carrying the flexible ablation electrodes can be close to the main needle, or far away from the main needle or remained stable; and therefore, the motion locus of the multi-jaw active conformal ablation needle can be controlled, and the technical problem that the motion locus cannot be controlled in the prior art can be solved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and more specifically relates to a multi-claw active conformal ablation needle with magnetic force control. Background technique [0002] Among urinary tumors, prostate cancer and kidney cancer have high morbidity and mortality. Among the malignant tumors in the world, the incidence of prostate cancer accounts for 2 males, and the mortality rate accounts for 8, and the incidence of kidney cancer accounts for 11, and the mortality rate accounts for 17, which has seriously endangered human health. Percutaneous biopsy and ablation are important technologies for the diagnosis and treatment of prostate cancer and kidney cancer. They have the advantages of less damage and faster recovery. Compared with manual puncture, percutaneous puncture can effectively improve the safety and effectiveness of surgery, but the surgical process is time-consuming and the ablation area is uncontrollable, which ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a multi-claw active conformal ablation needle with magnetic force control, thereby solving the technical problem of the prior art that cannot control the motion trajectory

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