US 12,213,719 B2
Cryoadhesion apparatus
Chi Yang, Shanghai (CN); and Zhaohua Chang, Shanghai (CN)
Assigned to ACCU TARGET MEDIPHARMA (SHANGHAI) CO., LTD., Shanghai (CN)
Appl. No. 17/626,241
Filed by ACCU TARGET MEDIPHARMA (SHANGHAI) CO., LTD., Shanghai (CN)
PCT Filed Sep. 29, 2020, PCT No. PCT/CN2020/118706
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/189800, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 202010205281.X (CN), filed on Mar. 23, 2020.
Prior Publication US 2023/0000537 A1, Jan. 5, 2023
Int. Cl. A61B 18/02 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/0218 (2013.01) [A61B 2018/00017 (2013.01); A61B 2018/0094 (2013.01); A61B 2018/0262 (2013.01); A61B 2018/0293 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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.