A needle rod telescopic adjustment system for an adjustable water injection ablation electrode needle

Abstract

The invention relates to a needle rod telescopic regulating system of an adjustable water injection ablation electrode needle. The needle rod telescopic regulating system is characterized by comprising a needle rod (1), a handle (4), a regulating knob (3), a regulating sleeve (10) and a scale slide block (5), wherein the handle (4) is of a hollow round tube shape; a kidney-shaped hole (401) is formed in the handle (4); a length regulating graduated scale (402) is printed on the edge of the kidney-shaped hole (401); and an annular groove (403) is formed in the inner wall of the handle (4) and is used for being matched with a cylindrical step (303) of the regulating knob (3) so that the regulating knob (3) is limited to move in the length direction of the handle. The needle rod telescopic regulating system has the advantages that the operation is convenient; the scales are clear; the observation by doctors during the operation is convenient.

Description

technical field [0001] The invention relates to a disposable radiofrequency ablation device, in particular to a needle rod telescopic adjustment system for a temperature-controlled radiofrequency adjustable water injection ablation electrode needle used for radiofrequency ablation treatment of tumors and diseased tissues. Background technique [0002] With the advancement of technology and oncology, radiofrequency ablation has become an effective way to treat cancer. Radiofrequency ablation generally uses local anesthesia, and CT or B-ultrasound scans are used to locate the signs of disease. After the electrode needle is inserted into the center of the lesion, the output power of radiofrequency ablation is automatically adjusted by monitoring the changes in the impedance, temperature and other parameters of the lesion tissue. Start radiofrequency ablation to rapidly produce large-scale coagulation necrosis in the lesion tissue. At present, there are two methods of radiofreq...

AI Technical Summary

Problems solved by technology

[0003] From a structural point of view, the current traditional adjustable water-injection ablation needle has unclear field of vision, poor hand feel, and thick and heavy handle. In the process of CT and B-ultrasound positioning of disease signs, it is necessary to add a fixer to ablate the ablation needle. The needle is fixed to ensure that the ablation needle can ablate the diseased tissue perpendicular to the position of the diseased sign; secondly, the traditional adjustable water-injected ablation needle has a thinner water injection tube and a thinner tube wall. Small, there are many water pipe breaks

In terms of performance, the traditional adjustable water injection ablation needle has neither cooling water at the needle tip to cool down the hot area of ​​the needle tip, nor effective measures to prevent tissue adhesion caused by high temperature and heat, resulting in the needle tip being damaged during the operation. Severe adhesions, leading to surgical accidents

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