US 12,433,598 B2
Thrombus aspiration systems and related methods
Hirobumi Watanabe, Irvine, CA (US)
Assigned to ASAHI INTECC CO., LTD., Seto (JP)
Filed by ASAHI INTECC CO., LTD., Seto (JP)
Filed on Oct. 11, 2021, as Appl. No. 17/498,526.
Claims priority of provisional application 63/091,258, filed on Oct. 13, 2020.
Prior Publication US 2022/0110634 A1, Apr. 14, 2022
Int. Cl. A61B 17/12 (2006.01); A61B 17/22 (2006.01); A61B 17/221 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/1215 (2013.01) [A61B 17/12109 (2013.01); A61B 90/39 (2016.02); A61B 2017/12054 (2013.01); A61B 2017/22038 (2013.01); A61B 2017/22079 (2013.01); A61B 2017/2215 (2013.01); A61B 2090/3966 (2016.02); A61B 2217/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for use in blood clot removal, the system comprising:
a first tube having a proximal fitting;
a second tube slidable within the first tube;
a self-expanding receiver having a liquid-impermeable membrane and positioned at least partially within the second tube, wherein the receiver has an open distal end configured to contact a thrombus, and wherein the receiver is radially expandable such that when the second tube and a proximal portion of the receiver are positioned within a distal end portion of the first tube and the second tube is moved proximally relative to the receiver until a distal end of the second tube is positioned proximally of a proximal end of the receiver:
the proximal portion of the receiver radially expands and makes contact with the distal end portion of the first tube; and
a distal portion of the receiver radially expands such that it has an inner diameter that is at least 10% larger than an inner diameter of the first tube;
a multi-port adapter comprising:
a first port configured to be coupled to the proximal fitting of the first tube;
a second port configured to seal around a cylindrical structure positioned therethrough; and
a third port having a luer lock; and
a vacuum source couplable to the luer lock;
wherein the system is configured such that when the multi-port adapter is coupled to the first tube, the proximal portion of the receiver radially expands, and the vacuum source is coupled to the luer lock and applies a vacuum to the first tube, an outer circumference of the proximal portion of the receiver makes uninterrupted contact over a circumferential direction with an inner circumference of the distal end portion of the first tube such that the outer circumference of the proximal portion of the receiver is surrounded entirely by the distal end portion of the first tube, and a negative pressure differential results between the receiver's distal end and a proximal end of the first tube.