Puncture perfusion needle, perfusion member and tumor radiofrequency ablation electrode tip

Abstract

A puncture perfusion needle, a perfusion member and a tumor radiofrequency ablation electrode tip, the puncture perfusion needle comprises a puncture needle body, the puncture needle body is flat, the two sides of the needle body are provided with a plurality of first outer arc parts along the length direction, and the distance between the arc top of each outer arc part and the axis of the needle body is gradually increased from the needle head to the needle tail; the puncture perfusion part comprises at least two puncture perfusion needles which are arranged side by side. The radiofrequency ablation electrode tip comprises an electrode needle, an outer sleeve and a puncture perfusion member or (an isolation perfusion assembly and the puncture perfusion member). According to the radiofrequency ablation electrode tip, the radiofrequency ablation heat injury effect can be effectively blocked in the treatment process, pain caused by stimulation of adjacent visceral organ nerves and perforation of adjacent visceral organs are completely eradicated, pain of a patient in an operation is reduced, the success rate of radiofrequency ablation treatment is increased, and therefore the number of times of the operation of the patient is reduced, and the local recurrence rate is reduced.

Description

technical field [0001] The invention relates to the technical field of medical auxiliary equipment, in particular to a puncture perfusion needle, a perfusion part and a tumor radiofrequency ablation electrode head. Background technique [0002] Recently, local thermal ablation techniques for many solid tumors have developed rapidly, and new minimally invasive ablation techniques have received widespread attention as an effective treatment option. Microwave ablation, laser ablation, high-energy focused ultrasound, argon-helium knife cryoablation, etc. Among the common physical ablation techniques, radiofrequency ablation is a kind of physical thermal ablation, which has been developed rapidly because of its safety and effectiveness. The radio frequency system has also developed from a unipolar system to a multipolar system. Image-guided percutaneous radiofrequency ablation technology has gradually matured, the indications have been continuously expanded, postoperative compli...

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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