US 12,376,908 B2
Traction device for curved balloon catheter and traction method
Chuanhai Zhang, Shanghai (CN); Subbakrishna Shankar, Shaker Hts, OH (US); and Fanqi Li, Shanghai (CN)
Assigned to SHANGHAI TECHBANK MEDICAL TECHNOLOGY CO., LTD, Shanghai (CN)
Appl. No. 16/757,262
Filed by Shanghai Techbank Medical Technology Co., LTD., Shanghai (CN)
PCT Filed Aug. 30, 2018, PCT No. PCT/CN2018/103280
§ 371(c)(1), (2) Date Apr. 17, 2020,
PCT Pub. No. WO2019/072047, PCT Pub. Date Apr. 18, 2019.
Claims priority of application No. 201710938901.9 (CN), filed on Oct. 10, 2017.
Prior Publication US 2021/0186621 A1, Jun. 24, 2021
Int. Cl. A61B 34/20 (2016.01); A61B 17/02 (2006.01); A61B 90/00 (2016.01); A61M 25/00 (2006.01); A61M 25/10 (2013.01); A61M 31/00 (2006.01)
CPC A61B 34/20 (2016.02) [A61B 17/02 (2013.01); A61M 25/0026 (2013.01); A61M 25/1011 (2013.01); A61M 31/005 (2013.01); A61B 2034/2065 (2016.02); A61B 2090/3966 (2016.02); A61M 2025/0008 (2013.01); A61M 2210/105 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A curved balloon catheter retractor device comprising:
a catheter with a handle at one end,
an inflatable positioner positioned at a fixed location on the catheter, and
a pulling balloon arranged outside the catheter adjacent the inflatable positioner and with upper and lower ends thereof being sealed on the catheter by laser welding or bonding,
wherein a plurality of lumens are formed in the catheter, and at least one first hole is formed in the catheter, at least one first lumen of the plurality of lumens is adapted to fill the pulling balloon with fluid through the at least one first hole of the catheter, and when the pulling balloon is filled with fluid, one side exhibits a curved shape;
and wherein at least one second lumen of the plurality of lumens in the catheter, which at least one second lumen is not in fluid communication with the at least one first lumen of the pulling balloon, can be used for drainage in an esophagus through an upper opening at a proximal end of the catheter,
and wherein the catheter is configured to bend when the pulling balloon is filled with fluid to form a curved shape;
and the handle is configured to drive the catheter and the pulling balloon to rotate,
wherein the handle comprises a portion that may be held stationary and a rotatable angle portion provided with an angular dimension indicated thereon, and when the handle is rotated, the handle is configured to be used to mark the relative azimuthal angle of the pulling balloon.