Flexible cryoablation probe

Abstract

The invention discloses a flexible cryoablation probe, which belongs to the technical field of medical equipment, and comprises a probe body, a handle part, a protective outer tube and a gas delivery tube; the probe body is connected with the handle part; the handle part is connected with the protective outer tube; the probe body comprises a freezing probe, a throttle pipe, a medical plastic catheter, a temperature thermocouple wire and a return pipe; the front end of the return pipe is connected with the freezing probe, the temperature thermocouple wire is spirally wound on the outer surface of the return pipe, and a medical plastic catheter is sleeved on the outer surface of the temperature thermocouple wire; a heat insulation interlayer is formed between the medical plastic catheter and the return pipe; the throttle pipe is arranged in the return pipe, the front end of the throttle pipe is close to the front end of the return pipe, and the rear end of the throttle pipe extends into the handle part; and the gas delivery tube is arranged in the protective outer tube and communicates with the throttle pipe. The probe disclosed by the invention can realize the full-lung reaching of a lung cancer focus through a bronchus, has better safety and minimally invasive property, and can better realize the ablation treatment of the lung cancer.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a flexible cryoablation probe that can be used for ablation therapy of lung cancer. Background technique [0002] Lung cancer is currently the malignant tumor with the highest morbidity and mortality in my country. Early detection and diagnosis of lung cancer is one of the fundamental strategies to improve the survival rate of lung cancer patients. Surgery and stereotactic radiotherapy are considered first-line techniques for the treatment of early-stage lung cancer. However, some lung cancer patients cannot tolerate surgery or are not suitable for radiotherapy, making interventional therapy one of the important means of their treatment. In recent years, great progress has been made in bronchoscopic interventional pulmonology technology and precise navigation system for pulmonary nodules. The ablation therapy of peripheral lung cancer / early lung cancer through broncho...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional cryoablation treatment of lung cancer reaches the lung cancer focus through percutaneous approach, there are risks such as trauma, pneumothorax and skin frostbite, the present invention provides a flexible cryoablation probe that can be used for lung cancer ablation treatment, including the probe body, The handle part, the protection outer tube and the air pipe; the probe body is connected with the handle part; the handle part is connected with the protection outer tube; Warming thermocouple wire and return pipe; the front end of the return pipe is connected to the freezing probe, the temperature measuring thermocouple wire is spirally wound on the outer surface of the return pipe, and the outer surface of the temperature measuring thermocouple wire is covered There is the medical plastic conduit; a heat insulating interlayer is formed between the medical plastic conduit and the return pipe; the throttle pipe is arranged inside the return pipe, and the front end of the throttle pipe is close to the return pipe the front end of the throttling tube, and the rear end of the throttling tube extends into the inside of the handle; the air delivery tube is arranged inside the protective outer tube, and the air delivery tube communicates with the throttling tube

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