Microwave ablation electrode needle device

Abstract

The invention discloses a microwave ablation electrode needle device which comprises a handle and an electrode needle, the electrode needle comprises an inner tube, an outer tube and a cable, the inner tube is sleeved with the outer tube, the periphery of the outer tube is wrapped with an anti-adhesion sleeve, one end of the outer tube is partially inserted into the handle and communicated with a hot water pipeline in the handle, and the other end of the outer tube is connected with a needle head. One end of the inner pipe is partially inserted into the handle and is communicated with a cold water pipeline in the handle, and the other end of the inner pipe is open; the cable is arranged in the inner tube, one end of the cable is connected to the handle, the other end of the cable is connected with the microwave antenna, the microwave antenna is arranged in the needle head, the periphery of the end, close to the microwave antenna, of the cable is sleeved with the choke tube, and the ID recognizer and the temperature sensor are installed in the handle. The cable surface current is eliminated, the effect of an approximate spherical ablation area is achieved, and clinical requirements can be better met.

Description

technical field [0001] The invention relates to the field of ablation electrode needles, in particular to a microwave ablation electrode needle device. Background technique [0002] Thermal ablation has been used in the treatment of solid tumor diseases for more than 10 years. Among many thermal ablation methods, radiofrequency ablation and microwave ablation are more and more widely used in clinical practice due to their simple principles and convenient operation. Thermal ablation is mainly used for Solid organ tumor treatment, treatment of cardiac and vascular diseases, etc.; Among these two ablation methods, microwave ablation has been used more and more in the clinical treatment of solid tumors in recent years because of its fast heating, high efficiency, short operation time, no need for negative plates, and no influence from the surrounding environment. Extensive, there are many kinds of microwave ablation electrode needles on the market at present, most of them only...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the droplet-shaped ablation area cannot be punctured at any angle to reach the target lesion, and precise ablation cannot be achieved; the carbonization caused during the ablation process and the cohesive force formed during the needle withdrawal process are likely to cause headaches. The terminal electrode falls off; the outer diameter of the existing electrode with a choke coil is relatively thick, and the existing scheme basically cannot achieve 15gauge. The present invention provides a microwave ablation electrode needle device, which increases the choke for the problem of the water drop-shaped ablation area. The design of the tube eliminates the current on the surface of the cable and achieves the effect of an approximate spherical ablation area, which can better meet the clinical needs. The choke tube is a non-metallic tube with a metal conductive layer on the outer wall. Through chemical plating, metal ions are attached to achieve The ultra-thin choke tube is used in the electrode needle whose external diameter is not greater than 15gauge; the ID recognizer and temperature sensor are added in the handle to monitor the temperature in real time, making the interventional operation safer; the outer tube is equipped with an anti-adhesion sleeve to ensure that the electrode needle Will not adhere to the patient's body tissue to solve the defects caused by the existing technology

Images