Split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation

Abstract

The invention relates to a split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation. The split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation comprises an electrode needle body, wherein the electrode needle body comprises a hollow needle tubing, a hollow handle fixedly connected to the rear end of the hollow needle tubing, and multiple elastic electrodes arranged in the hollow needle tubing; an insulation layer is arranged on the inner circumferential wall of the hollow needle tubing; the elastic electrodes can be forwards pushed and extend from the front end of the hollow needle tubing, is shaped like an umbrella when extending and is controllable in size; the electrode needle further comprises a pushing rod connected into the hollow needle tubing and the hollow handle in a sliding mode; the rear end of the pushing rod is exposed out of the rear end of the hollow handle and provided with an electronic port communicated with the elastic electrodes; a metal puncture needle is movably arranged outside the hollow needle tubing in a sleeving mode; the front end of the metal puncture needle is provided with an oblique opening. The electrode needle not only is large in ablation range, small in artifact under high field magnetic resonance and not prone to hiding the lesions, but also adopts the split design, and solves the technical problem in the prior art that as an integrated multipole needle is too long, the integrated multipole needle can not be suitable for the operation in a magnetic resonance aperture environment.

Description

technical field [0001] The invention relates to an electrode needle, in particular to a split multi-pole magnetic resonance compatible radio frequency ablation electrode needle. Background technique [0002] Radiofrequency ablation (RFA) is widely used in the treatment of malignant tumors in the liver, kidney, soft tissue and other parts, and its curative effect on some small lesions is comparable to that of surgery. Magnetic Resonance Imaging (MRI) has no ionizing radiation, can be imaged in any orientation, has good tissue resolution and a variety of temperature-sensitive imaging techniques, and is the best imaging method for RFA guidance and curative effect judgment. However, at present, ordinary metals are mostly used to make radiofrequency ablation electrode needles at home and abroad, and radiofrequency ablation is guided by B-ultrasound and CT, which cannot be operated under MRI. At present, there is no MRI-compatible radiofrequency ablation electrode needle in China...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above disadvantages and provide a split-type multi-pole magnetic resonance compatible radiofrequency ablation electrode needle. The design can first guide the metal puncture needle into the lesion in the magnetic resonance environment, and then use the metal puncture needle to guide the electrode needle into the lesion in the external environment, so as to overcome the inapplicability of the existing technology because the length of the integrated multi-pole needle is too long Technical Issues of Surgery in the MR Aperture Environment

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