US 12,239,355 B2
Balloon catheter and ablation system
Zhaohua Chang, Shanghai (CN); Bo Liang, Shanghai (CN); Yiyong Sun, Shanghai (CN); and Liuping Shen, Shanghai (CN)
Assigned to SHANGHAI MICROPORT EP MEDTECH CO., LTD., Shanghai (CN)
Appl. No. 17/419,219
Filed by SHANGHAI MICROPORT EP MEDTECH CO., LTD., Shanghai (CN)
PCT Filed Nov. 15, 2019, PCT No. PCT/CN2019/118882
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/134683, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 201811653052.3 (CN), filed on Dec. 28, 2018.
Prior Publication US 2022/0110669 A1, Apr. 14, 2022
Int. Cl. A61B 18/04 (2006.01); A61B 18/00 (2006.01); A61B 18/02 (2006.01)
CPC A61B 18/04 (2013.01) [A61B 18/02 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00714 (2013.01); A61B 2018/00797 (2013.01); A61B 2018/00916 (2013.01); A61B 2018/0212 (2013.01); A61B 2018/048 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A balloon catheter, comprising a catheter body and a balloon that is disposed at a distal end of the catheter body, wherein the balloon catheter further comprises a first heating component and a first temperature sensor and the catheter body comprises a fluid transportation pipe, wherein the fluid transportation pipe has a distal end disposed within the balloon to release a fluid into the balloon, the first heating component arranged at the distal end of the fluid transportation pipe to heat the fluid in the fluid transportation pipe, the first temperature sensor arranged at the distal end of the catheter body or on the first heating component to capture temperature information of the catheter body or the first heating component, and wherein:
when the first heating component is operating, the fluid transportation pipe is configured to release a thermal ablation gas into the balloon; and when the first heating component is not operating, the fluid transportation pipe is configured to release a freezing liquid into the balloon,
wherein the fluid transportation pipe comprises a first helical section and a first longitudinally extending section in communication with the first helical section, wherein the first heating component is disposed on the first longitudinally extending section, and wherein the first temperature sensor is arranged on the fluid transportation pipe at a location close to a distal end of the first heating component, and
wherein the first helical section is provided with a plurality of fluid spraying orifices, and wherein the plurality of fluid spraying orifices are configured to spray the fluid towards different directions.