Puncture perfusion needle, perfusion part and tumor radiofrequency ablation electrode head

Abstract

A puncture perfusion needle, a perfusion part, and an electrode head for tumor radiofrequency ablation. The puncture perfusion needle includes a puncture needle body, which is flat, and a plurality of first outer arcs are arranged on both sides of the needle body along its length direction. The needle head In the direction of the needle tail, the distance between the arc top of the outer arc and the axis of the needle gradually increases; the puncture and perfusion part includes at least two above-mentioned puncture perfusion needles arranged side by side. The radiofrequency ablation electrode head includes an electrode needle, an outer sleeve, and a puncture perfusion part or (isolating the perfusion component and the puncture perfusion part). The radiofrequency ablation electrode head of the present invention can effectively block the heat damage effect of radiofrequency ablation during the treatment process, eliminate the pain caused by the nerve stimulation of adjacent organs, perforate adjacent organs, reduce the pain of patients during operation, and improve the success rate of radiofrequency ablation treatment, thereby Reduce the number of operations for patients and reduce the local recurrence rate.

Description

technical field [0001] The invention relates to the technical field of medical auxiliary devices, in particular to a puncture perfusion needle, an infusion piece and an electrode tip for radiofrequency ablation of tumors. Background technique [0002] Recently, local thermal ablation techniques for many solid tumors have developed rapidly, and new minimally invasive ablation techniques have received extensive attention as an effective treatment option. Among the common physical ablation techniques, radiofrequency ablation is a kind of physical thermal ablation, which has been rapidly developed because of its safety and effectiveness. The radio frequency system also develops from the monopole system to the multipole system. Image-guided percutaneous radiofrequency ablation has gradually matured, its indications have been broadened, postoperative complications have been gradually reduced, and the efficacy has been further improved. It has become an indispensable method for th...

AI Technical Summary

Problems solved by technology

[0004] However, there are two factors that will affect the therapeutic effect of radiofrequency ablation in the clinical application process. On the one hand, take the most widely used multi-claw expandable electrode as an example. This type of electrode is characterized by multiple clusters. Array array electrodes or multi-claw expandable electrodes can increase the range of ablation, but the electrode needles may appear inflated or unevenly distributed during stretching and expansion

If the two electrodes are brought together, it can cause a premature and significant rise in impedance, making it difficult to generate sufficient energy for tissue coagulation

If the distance between the electrode needles is too large, the ideal ablation effect cannot be achieved

On the other hand, taking the ablation treatment of liver tumors as an example, the application of current ablation treatment technology is closely related to the tumor growth site. For liver tumors adjacent to the gallbladder, diaphragm, pericardium, and gastrointestinal Burns or frostbite may cause and increase the corresponding complications, resulting in insufficient ablation area, incomplete treatment or tumor recurrence

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