Bundling multi-pole needle radiofrequency ablation device convenient to puncture

Abstract

The invention relates to the technical field of radiofrequency ablation medical treatment, and discloses a bundling multi-pole needle radiofrequency ablation device convenient to puncture, which comprises a puncture end, the tail part of the puncture end is connected with an electrode needle assembly, and the electrode needle assembly comprises a bundling electrode needle. Two groups of bunched electrode needles move oppositely under the pushing of an electric push rod, so that each probe in each group of bunched electrode needles penetrates out of a needle outlet channel and pierces into the tissue of a patient, and meanwhile, when a carrier plate enables the probes to penetrate out of a supporting tube under the action of the electric push rod, a liquid storage tank and a piston push rod also move along with the carrier plate, so that the liquid storage tank and the piston push rod are driven by the electric push rod to penetrate into the tissue of the patient. When the piston push rod moves to the position of the check block, the piston push rod moves towards the interior of the liquid storage tank under the action of the check block, so that a solution in the liquid storage tank is compressed and injected into the middle of a lesion tissue through a liquid passing pipe on the probe and a liquid outlet, the progress degree of radiofrequency ablation is more uniform, and tumor tissue covering is conveniently completed; and in addition, in the ablation process, virus cells in the diseased tissue can be better ablated.

Description

technical field [0001] The invention relates to the technical field of radiofrequency ablation, in particular to a cluster multipole needle radiofrequency ablation device that is convenient for puncturing. Background technique [0002] The principle of radiofrequency ablation is to apply alternating high-frequency current with a frequency of less than 30MHz (usually 460-480kHz) to cause high-speed oscillation of ions in tumor tissue, friction with each other, and convert radiofrequency energy into heat energy, causing tumor cells to undergo coagulation and necrosis. In radiofrequency ablation, the instrument used is a radiofrequency ablation catheter, which is connected to a radiofrequency generator. Under the guidance of B-ultrasound or CT, the central electrode at the distal end of the radiofrequency ablation catheter is percutaneously punctured, and the target tumor is punctured through the puncture point. Cell coagulation, degeneration and necrosis. [0003] The develo...

AI Technical Summary

Problems solved by technology

[0003] Radiofrequency ablation has a long history of development. Radiofrequency ablation needles have developed from the initial unipolar to multipolar. The effective ablation range of unipolar is small, and the effect on large tumors is poor. Therefore, there are now bundled multipolar needles.

[0004] During radiofrequency ablation with bundled multipolar needles, the needles are inserted into the lesion of the patient, and two bundled electrode needles are respectively driven to puncture the diseased part scatteredly, and then radiofrequency ablation is performed on the affected part; however, due to the shape, area and volume of different tumor tissues The sizes are different. When the commonly used radiofrequency ablation electrode needles are fired into the tumor tissue, the specific position of the electrode needle and the inclination angle of the needle cannot be adjusted. The position deviation is large, because most of the electrode needles have an arc-shaped structure after firing and piercing, and the arc-shaped structure causes the outer ring of the electrode needle to be too embedded in the tumor range, resulting in damage to normal organs and tissues during the adjuvant treatment with normal saline. damage, or even further spread of the tumor virus, requiring multiple treatments

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