MULTI-CHANNEL CRYOABLATION SYSTEM AND CONTROL METHOD

A multi-channel cryoablation system. High-pressure nitrogen is used as an air source. The system comprises a gas main pipeline, a rewarming pipeline, a freezing high-pressure pipeline, and a freezing low-pressure pipeline, an air source input port being provided on the gas main pipeline, the rewarming pipeline communicating with the gas main pipeline, the rewarming pipeline being divided into N rewarming branch channels, the freezing high-pressure pipeline communicating with the gas main pipeline, the freezing low-pressure pipeline communicating with the gas main pipeline, and the freezing low-pressure pipeline and a rear section of the freezing high-pressure pipeline sharing a gas supply channel that communicates with the N rewarming branch channels; and N channel pipelines, each channel pipeline having one end connected to an ablation needle (41) and the other end connected to one freezing branch channel and/or one rewarming branch channel, wherein N being a positive integer greater than or equal to two.