Microwave ablation water knife

Abstract

The invention relates to a microwave ablation water jet scalpel for the minimally invasive ablation of human tumors, which aims at solving the problems of surrounding carbonization of a scalpel head and smaller ablation area of the existing microwave scalpel in operation, as well as the scald of the skin and other tissues by the shaft temperature caused by the standing wave of the microwave, the invention is composed of three parts: an external duct system which is composed of a mold frame with a water injection hole and an external duct, an internal duct system which is composed of the mold frame with a water outlet hole and an internal duct and a microwave scalpel head system which is composed of a microwave electrode interface mold frame and a microwave scalpel head connected by a microwave guide wire and an insulation pipe; as the invention adopts the structure, when the external duct and the internal duct have displacement, part of physiological saline is injected in the tissues; the injected physiological saline in the tissues at the same time of the microwave work of the invention can generate the functions of moisturization, penetration and thermal conductivity, thereby preventing carbonization, avoiding the tissue adhesion and expanding the ablation volume. At the same time, the invention can be combined with chemotherapy drugs for carrying out targeted therapy. A circulating cavity which is formed by the internal and external ducts at the same time of water injection can freely control the pipe wall temperature of the microwave scalpel and avoid the pipe wall from scalding the tissues.

Description

technical field [0001] The invention relates to a medical device, in particular to a microwave ablation water knife used for minimally invasive ablation of human tumors. Background technique [0002] Malignant tumors are one of the main causes that threaten human health and life. Currently, there is no cure for malignant tumors. In recent years, the technology of minimally invasive treatment of tumors has been greatly developed, and it has attracted widespread attention because of its characteristics of small trauma, low complications, less pain for patients receiving treatment, and high in situ inactivation rate. At present, the minimally invasive tumor treatment equipment mainly includes radio frequency, microwave, argon-helium knife, ultrasonic focused knife and other mainstream equipment. Its treatment mechanism is under the guidance of B-ultrasound, CT or MRI, the energy is concentrated on the lesion site, so that the tumor tissue is necrotic. Among them, compared wi...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problem of tissue carbonization and adhesion between the microwave cutter head and the tissue due to microwave work, and the problem of small ablation volume of a single cutter head. prevent carbonization, eliminate tissue adhesion, expand the volume of ablation, and can be combined with chemotherapy drugs for treatment

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