Water injected microwave antenna

Abstract

The invention relates to a water injected microwave antenna. An outer pipe assembly is communicated with an inner pipe assembly; the antenna penetrates through the inner parts of the inner pipe assembly and the outer pipe assembly; the tail end of the antenna is fixed at the inner part of a socket; an inner core of the antenna is also arranged at the front end of the antenna; the outer pipe assembly comprises an outer pipe frame, an outer pipe and a water injection hole; a sliding groove, a movable passageway of the outer pipe frame, and an antenna passageway are arranged on the inner pipe frame in the inner pipe assembly; the sliding groove is arranged on the outer wall of an inner pipe frame; the movable passageway of the outer pipe frame is arranged at the inner part of the inner pipe frame; the outer pipe frame is arranged in the movable passageway of the outer pipe frame; a front plug is installed at the front end of the inner pipe frame; a linking component is arranged in the front plug; and the outer pipe assembly displaces at the outer side of the antenna through the linking component and the inner pipe assembly so as to control the inner core of the antenna to stretch out of the outer pipe or hide at the inner part of the outer pipe. In the invention, the inner core of the antenna can be prevented from falling due to the adhesion between the inner core and skin or tissue after the inner core is heated, and the wall of the outer pipe can also be prevented from scalding the skin of a patient when the microwave antenna is in operation.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a microwave surgical instrument, in particular to a water-filled microwave antenna. Background technique [0002] Malignant tumors are one of the main reasons that threaten human health and life, but there is no cure for malignant tumors at present. 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. Tumor minimally invasive treatment equipment mainly includes mainstream equipment such as radio frequency, microwave, argon-helium knife, and ultrasonic focused knife. The treatment mechanism is guided by B-ultrasound, CT or MRI, and concentrates energy on the lesion to cause tumor tissue necrosis. Among them, compared with several other devices,...

AI Technical Summary

Problems solved by technology

[0003] However, in the process of microwave ablation to treat tumors, because the temperature of the microwave knife head is too high (over 100°C), the surface of the knife head is likely to adhere to the tissue around the head, making it impossible to perform the rest of the operation. In severe cases, the cutter head will fall off from the microwave knife and stay in the patient's body, causing secondary damage to the patient.

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