Microwave ablation needle provided with water cooling sleeve tube and applied under bronchofiberscope

Abstract

The invention discloses a microwave ablation needle provided with a water cooling sleeve tube and applied under a bronchofiberscope. The microwave ablation needle comprises a handle, a sheathing canal, a guide wire and a control mechanism. The handle is provided with a water injecting guide tube and a water drain guide tube. The guide wire comprises a cable, an ablation electrode, a water coolingguide tube, a sealing part, a syringe needle and an inner sleeve. A backflow opening is formed in the front end of the water cooling guide tube, a water injecting cavity and a water drain cavity are formed in an inner cavity, and the ablation electrode and the syringe needle are arranged at the front end of the cable. The microwave ablation needle provided with the water cooling sleeve tube and applied under the bronchofiberscope can achieve needle insertion and ablation at a controllable distance in a channel of the bronchofiberscope. The microwave ablation needle has excellent water coolingcirculating design, the sealing property and supporting performance in the microwave ablation needle are considered from multiple aspects, and it is guaranteed that microwave treatment emitting high heat can be safely executed in the body of a patient.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a microwave ablation needle with a water-cooled sleeve applied under a fiberoptic bronchoscope. Background technique [0002] Microwave ablation needles are mainly used in the ablation of human solid tumors for tissue coagulation therapy; microwave ablation needles use the water molecules in the tumor to change direction rapidly with the alternation of microwave electric field under the action of 2450MHz microwave electromagnetic field, with more than one million The frequency flips every second and rubs and collides with each other, generating a lot of heat and causing tissue denaturation and necrosis; [0003] At present, the common treatment methods for tumors in the cavity (bile duct, blood vessel, rectum, lung and trachea) include chemotherapy, radiotherapy and radiofrequency ablation, etc., but the effect is not good. Chemotherapy and radiotherapy have relatively large si...

AI Technical Summary

Problems solved by technology

[0004] For example, the development of a flexible microwave ablation needle needs to enter the tumor through a bronchoscopic device, and the temperature of the catheter must be controlled to avoid damage to the imaging device caused by high temperature; the traditional cooling design cannot meet the characteristics of its flexible and slender product. The design of water cooling cycle, the sealing effect and reliability of the circulating water of the product are technical bottlenecks that are difficult for those skilled in the art to solve at present

Images