Semi-rigid water-cooling microwave ablation antenna

Abstract

Provided is a semi-rigid water-cooling microwave ablation antenna. The semi-rigid water-cooling microwave ablation antenna comprises a radiation head, a medium tube, a semi-rigid coaxial cable, an outer guide sleeve and a water chamber sleeve, wherein the outer guide sleeve is installed on the tail portion of the medium tube in a sleeved mode, the water chamber sleeve is fixed at the rear end of the outer guide sleeve, the semi-rigid coaxial cable penetrates through an axis hole of the outer guide sleeve, a cavity used for water-and-heat exchange is formed by the outer guide sleeve and the water chamber sleeve, at least three small holes are formed in the end face of the tail portion of the water chamber sleeve, capillary tubes are welded on the end face of the tail portion of the water chamber sleeve, the number of the capillary tubes is equal to the number of the small holes, at least one of the capillary tubes is a cooling water inlet tube, the rest of the capillary tubes are cooling water outlet tubes, and a thermo-plastic tube is used for wrapping the capillary tubes on the periphery of the semi-rigid coaxial cable in an evenly distributed mode. Low-temperature water which flows in a single-direction circulation mode is used for cooling a high-heat structural component at the front end of the semi-rigid water-cooling microwave ablation antenna, heat energy in a microwave ablation area and heat energy, used for microwave transmission, of the semi-rigid coaxial cable are transferred to the outside of a body in time, and therefore the semi-rigid water-cooling microwave ablation antenna is a clinic surgical instrument which can be safely, efficiently and reliably applied to the microwave ablation therapy on cavities, intestinal canals, even blood vessels and the like.

Description

technical field [0001] The invention relates to a medical device for microwave ablation therapy, which belongs to the field of medical microwave technology application. Background technique [0002] Since the beginning of the 21st century, microwave ablation of tumors has rapidly developed into a major means of clinical tumor treatment. It can inactivate tumors in situ under the guidance of modern images such as B-ultrasound or CT, and has minimally invasive, precise, Notable features of high efficiency, no toxicity and little side effects. Microwave ablation is playing an increasingly important role in the treatment of solid tumors, especially for larger solid tumors, due to its outstanding advantages such as fast heating speed, high intratumoral temperature, large ablation range, and little influence from carbonization and blood flow. The popularity rate of clinical application is also increasing. [0003] In recent years, microwave ablation therapy has also rapidly expa...

AI Technical Summary

Problems solved by technology

[0004] 1 Ordinary water-cooled microwave ablation antennas are rigid needles that cannot be bent, and are not suitable for clinical operations in the above medical disciplines

[0005] 2 The existing semi-rigid microwave ablation antenna is too simple in structure and has defects, which hinder the popularization and application of microwave ablation therapy in the above medical fields. The reasons are as follows:

This brings trouble to the surgeon, and at the same time, when the self-regulation function of the patient's physiology is exceeded, it will inevitably cause surgical accidents.

[0009] The above is the fundamental defect and key technical problem that the existing microwave ablation antenna cannot be normally promoted and applied clinically.

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