Adjustable radiofrequency ablation electrode needle

Abstract

The invention discloses an adjustable radiofrequency ablation electrode needle which comprises a handle, a needle tube arranged on the handle, an infusion connected with the needle tube and an RF power line connected with the needle tube. The infusion is connected with a liquid injector, and the RF power line is arranged in an electrical cable and connected with a radiofrequency generator. The needle tube is fixed to a handle fixing seat arranged in the handle, and the needle tube is sleeved with a medical sleeve. A sliding rail part extending along the needle tube is arranged in the handle, a sliding block capable of moving along the sliding rail part is arranged on the sliding rail part, the medical sleeve is fixed to the sliding block, the sliding block drives the medical sleeve to move when moving, and therefore the size of the exposed part of the needle tube is changed. According to the adjustable radiofrequency ablation electrode needle, the ablation range can be adjusted through a single hand, the problem that when the double hands conduct operation in cooperation, wobbling is likely to happen, and a puncture part is dislocated is solved, accurate sliding limitation is conducted through a sliding rail buckling mechanism, and the limiting precision is high.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a radio frequency ablation electrode needle for treating tumors such as liver cancer and lung cancer. Background technique [0002] Radiofrequency tumor ablation is a new technology for minimally invasive treatment of solid tumors that has emerged in recent years. Compared with traditional treatment, it has the advantages of high curative effect, less trauma, less pain, quick recovery, no sequelae, and wide indications. Patients are exempted from the pain of surgery, so it has developed rapidly and has been widely accepted by both doctors and patients. [0003] The radiofrequency ablation electrode needle is a key component in the radiofrequency ablation treatment system. When it is used for tumor treatment, the radiofrequency ablation electrode needle is directly inserted into the patient's body, which plays a decisive role in the treatment effect. Radiofreq...

AI Technical Summary

Problems solved by technology

[0004] At present, the single-needle radiofrequency ablation electrode needles at home and abroad are mainly fixed, that is, the ablation range cannot be adjusted. The fixed ablation electrode needles used in clinical practice cannot form ablation lesions with a controllable range for tumors of different sizes and shapes. The sex is low, and the risk of use is high, especially for important parts, such as thyroid tumors, which are basically unusable

In order to overcome the shortcomings of fixed ablation electrode needles in clinical use, radio frequency ablation electrode needles that use a screw mechanism to adjust the ablation range have appeared. This type of radio frequency ablation electrode needle requires the cooperation of both hands of the doctor during use. The handle, the other hand rotates the spiral knob to adjust the ablation range, which is difficult to operate. During the operation, both hands are coordinated, and it is easy to shake and cause the displacement of the puncture site, causing secondary disasters. Secondly, it is related to the manual operation technique and the operator is not skilled. It is not easy to accurately limit the adjustment range

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