Cryoadhesion apparatus

A cryoadhesion apparatus, comprising:

• a remote control assembly, a valve assembly, a needle catheter assembly, and a gas cylinder, wherein the remote control assembly comprises a sheath structure and a remote control mounted in the sheath structure, the sheath structure is provided with a catheter channel for the needle catheter assembly to pass through, and two ends of the valve assembly are respectively connected to the needle catheter assembly and the gas cylinder;
• the sheath structure is capable of squeezing the needle catheter assembly, wherein when squeezing is maintained, the needle catheter assembly is capable of moving along with the sheath structure under a frictional force between an inner wall of the catheter channel and the needle catheter assembly;
• when the sheath structure does not squeeze the needle catheter assembly, the remote control assembly is capable of moving along the needle catheter assembly;
• the remote control is configured to, when triggered, send a trigger signal to the valve assembly;
• the valve assembly is configured to transport, when receiving the trigger signal, a gas from the gas cylinder to the needle catheter assembly, to enable the needle catheter assembly to perform freezing;
• the sheath structure comprises a remote control sleeve portion, which is provided with a trigger part and a remote control chamber configured to accommodate the remote control;
• and
• the trigger part is capable of triggering, when touched, a button switch of the remote control in the remote control chamber to enable the remote control to transmit the trigger signal when the button switch is triggered.