US 12,420,070 B2
Double-balloon thrombolysis and thrombectomy device
Yongsong Xu, Beijing (CN); Qi Guo, Beijing (CN); Zhimei Liao, Beijing (CN); Rui Wang, Beijing (CN); Hang Tang, Beijing (CN); and Jian Wu, Beijing (CN)
Assigned to Beijing Taijieweiye Technology Co., Ltd, Beijing (CN)
Appl. No. 18/558,101
Filed by Beijing Taijieweiye Technology Co., Ltd, Beijing (CN)
PCT Filed Nov. 2, 2021, PCT No. PCT/CN2021/128040
§ 371(c)(1), (2) Date Oct. 30, 2023,
PCT Pub. No. WO2022/257343, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 202110645075.5 (CN), filed on Jun. 9, 2021.
Prior Publication US 2024/0216655 A1, Jul. 4, 2024
Int. Cl. A61M 25/10 (2013.01); A61B 17/22 (2006.01)
CPC A61M 25/1011 (2013.01) [A61B 17/22 (2013.01); A61B 2017/22054 (2013.01); A61B 2017/22067 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A double-balloon thrombolysis and thrombectomy device, comprising:
a double-balloon catheter comprising a three-way catheter base, a catheter body, a first balloon and a second balloon, wherein a distal end of the three-way catheter base is connected to a proximal end of the catheter body, the first balloon and the second balloon are respectively sleeved over the catheter body, the first balloon is located at a distal end of the catheter body, the second balloon is located at a proximal end of the first balloon, the three-way catheter base comprises a main connection port, a first connection port and a second connection port, the catheter body comprises a catheter body lumen, a first lumen passage and a second lumen passage, the first lumen passage and the second lumen passage are respectively located on an inner wall of the catheter body lumen, the first balloon and the first connection port are connected through the first lumen passage, the second balloon and the second connection port are connected through the second lumen passage, the catheter body lumen and the main connection port are connected, and a plurality of micropores are uniformly distributed in a surface of the second balloon;
an access sheath sleeved over the catheter body, wherein a distal end of the access sheath is located at a proximal end of the second balloon; and
a Y-type hemostasis valve sleeved over the catheter body, wherein a proximal end of the access sheath is fixedly connected to the catheter body through the Y-type hemostasis valve,
wherein a guide wire passing through the catheter body lumen pushes the double-balloon catheter into a blood vessel to push the first balloon to a distal end of a vascular thrombosis site, such that the second balloon is embedded into the vascular thrombosis site; normal saline is injected into the first balloon through the first connection port to expand the first balloon to completely fit an inner wall of the blood vessel so as to prevent thrombus from escaping; a thrombolytic drug is injected into the second balloon through the second connection port to create a pressure inside the second balloon to allow the micropores in the surface of the second balloon to open, such that the thrombolytic drug is released through the micropores to the vascular thrombosis site for thrombolysis; and a negative pressure is applied to a lumen of the access sheath through the Y-type hemostasis valve to suck away small broken thrombus.