Isolation perfusion part, ablation electrode tip and tumor radiofrequency ablation treatment device

Abstract

An isolation perfusion member, an ablation electrode tip and a tumor radiofrequency ablation treatment device, the isolation perfusion member comprises an arc baffle, an extrusion airbag, a flexible substrate and a plurality of perfusion puncture heads, and the radiofrequency ablation electrode tip comprises an electrode needle, an outer sleeve and an isolation perfusion assembly or (the isolation perfusion assembly and a puncture perfusion member); the tumor radiofrequency ablation treatment device comprises a host, an image system, an auxiliary electrode, a radiofrequency ablation electrode tip, a normal saline pumping system and an air supply system. According to the radiofrequency ablation electrode tip, normal saline can be evenly poured into tumor tissue in the treatment process, on one hand, the ion content of the tumor tissue can be increased, then ablation energy is improved, the size of an ablation focus is increased, and the treatment effect is improved, on the other hand, the form of a solidification area of the tumor tissue is more regular and controllable, therefore, tumor residues and thermal damage to important anatomical structures adjacent to the target site are avoided.

Description

Technical field [0001] The present invention relates to the field of medical auxiliary instruments, and more particularly to an isolation perfusion, ablation electrode head, and tumor radio frequency ablation therapy. Background technique [0002] RF ablation (RFA) has been recognized as one of the important means of liver cancer and metastatic liver cancer. The purpose of RFA treatment of liver tumors is to inactivate tumors in one time, while protecting normal liver and reducing complications. Radio frequency electrodes are positioned in direct view or imaging guidelines, and when the RF generates generates RF current, the positive and negative ions around the electrode needle generate high-speed vibration and friction in the radio frequency field, and then converted to thermal energy. Thermal energy causes thermal transformation and solidification necrosis in local tissue cells. [0003] The radiofrequency ablation principle is to heat the tissue ion shock around the electrode...

AI Technical Summary

Problems solved by technology

[0003] The principle of radiofrequency ablation is to use high-frequency alternating electric field to trigger ion vibration in tissue around the electrode needle to generate heat, so that the tumor tissue around the needle is thermally coagulated and necrotic, and the conductivity of the necrotic tissue decreases (impedance increases) due to changes such as dehydration and carbonization. The radiofrequency ablation system According to the detected impedance change, the power output is automatically stopped to end the ablation process. However, there are two factors that will affect the therapeutic effect of radiofrequency ablation in the clinical application process. For example, this type of electrode is characterized by clustered multi-array electrodes or multi-claw expandable electrodes, which can increase the range of ablation, but the electrode needles may appear incomplete expansion or uneven distribution 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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