Umbrella-shaped radiofrequency ablation electrode needle for endoscope

Abstract

The invention discloses an umbrella-shaped radiofrequency ablation electrode needle for endoscopes. The umbrella-shaped radiofrequency ablation electrode needle comprises a handle (5), a guide pipe (3), a needle point (2), an umbrella-shaped electrode needle (1), an injection nozzle (9), a connection cable (7), a plug (8) and a guide pipe length keeping structure; the far end of the guide pipe (3) is provided with the sharp needle point (2), and the umbrella-shaped electrode needle (1) can be unfolded or taken back from the inside of the sharp needle point (2) at the far end of the guide pipe (3). The guide pipe (3) is soft, thin and long (60-180cm), hence the metal needle point (2) at the far end of the guide pipe (3) can pierce a lesion tissue through work cavities of various endoscopes, and then the umbrella-shaped electrode needle (1) is unfolded for radiofrequency ablation. The point end of the umbrella-shaped electrode needle (1) is provided with an injection hole and a temperature thermocouple (11), and liquid medicine injection and temperature control can be performed simultaneously during radiofrequency ablation. The length of the soft, thin and long guide pipe (3) when being subjected to tensile force or pressure can be kept unchanged by the guide pipe length keeping structure.

Description

technical field [0001] The invention relates to an umbrella-shaped radio frequency ablation electrode needle for an endoscope, in particular to an umbrella-shaped radio frequency ablation electrode which can cooperate with an endoscope to treat benign and malignant tumors. Background technique [0002] Compared with traditional surgical operations, medical endoscopes have the characteristics of flexible, simple, and direct operations in surgical operations and routine medical inspections, which greatly improve diagnostic capabilities and work efficiency. [0003] Medical endoscopes use the natural holes of the human body or open a few small holes when necessary. The doctor only needs to skillfully insert the endoscopic lens into the body, and can perform closed surgery in the body outside the body through other surgical instruments and camera display systems. . The functional minimally invasive surgery of medical endoscope has been widely accepted by doctors and patients, a...

AI Technical Summary

Problems solved by technology

When the umbrella-shaped electrode needle begins to expand, the catheter is subject to tension due to the friction between the tip of the umbrella-shaped electrode needle and the inner wall of the needle tip; when the umbrella-shaped electrode needle begins to retract, the catheter is subject to compressive force, and these tensions or pressures will cause the length of the catheter to increase. Changes in catheter length can prevent full deployment or retraction of the electrode needle

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