Electroporation ablation electrode needle and treatment system using the same

Abstract

An electroporation ablation electrode needle and a treatment system using the same. The electroporation ablation electrode needle includes a metal body, an inner insulating layer and an outer insulating layer three-layer structure; wherein the metal body is used as an electrode to output high-voltage pulses for electroporation ablation; the inner and outer insulating layers cover all or part of the inner layer The structure is capable of shielding the high-voltage pulse output by the metal body; the inner and outer insulating layers are respectively provided with an opening area, and the opening area can transmit the high-voltage pulse output by the metal body; and the inner insulating layer and the outer insulating layer are both Controllable rotation about and / or movement relative to the metal body is possible so that the overlapping portions of the opening regions on the inner and outer insulating layers can be controllably changed in size and position. The electroporation ablation electrode needle of the present invention can adjust the shape and size of the discharge area of ​​the ablation electrode needle before, during and after insertion into the patient according to the shape and size of the lesion, thereby realizing conformal ablation.

Description

technical field [0001] The invention belongs to the technical field of electroporation ablation medical instruments, in particular to an electroporation ablation electrode needle and a treatment system using the same. Background technique [0002] Various minimally invasive ablation techniques under the guidance of imaging technology enable inoperable tumors, including liver cancer, lung cancer and pancreatic cancer, to obtain tumor reduction or even complete ablation opportunities, which plays an important role in prolonging the life of patients and improving the quality of life of patients effect. Looking at the various ablation techniques currently in use, including radiofrequency, cryotherapy, and microwave, they have their own characteristics and corresponding indications, and it is difficult to conclude that one method can replace another. The above radiofrequency, microwave and cryoablation treatment methods are often difficult to perform when dealing with lesions th...

AI Technical Summary

Problems solved by technology

[0004] The shape of tumors in clinical practice is complex and changeable. At present, there is no ablation electrode needle that can cover and treat various diseased tissues

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