US 12,343,034 B2
Catheter for aspiration, fragmentation and removal of removable material from hollow bodies
Saeid Kasiri Ghahi, Vilters (CH); Mohsen Zendehbad, Pfaffhausen (CH); Abdallah Regaig, Bad Ragaz (CH); and Bruno Bahnmueller, Zurich (CH)
Assigned to Straub Medical AG, Wangs (CH)
Appl. No. 17/772,845
Filed by STRAUB MEDICAL AG, Wangs (CH)
PCT Filed Oct. 26, 2020, PCT No. PCT/EP2020/080022
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/083832, PCT Pub. Date May 6, 2021.
Claims priority of application No. 19206321 (EP), filed on Oct. 30, 2019.
Prior Publication US 2023/0000514 A1, Jan. 5, 2023
Int. Cl. A61B 17/22 (2006.01); A61B 17/3207 (2006.01)
CPC A61B 17/3207 (2013.01) [A61B 2017/22079 (2013.01); A61B 2217/005 (2013.01)] 14 Claims
OG exemplary drawing
 
1. Catheter for aspiration, fragmentation and removal of removable material, in particular thrombi and emboli, from hollow bodies, in particular blood vessels, comprising:
a flexible tube, the flexible tube having a proximal end and a distal end,
a flexible helical transport screw, the flexible helical transport screw extending from the proximal end of the flexible tube inside of the flexible tube in direction of the distal end of the flexible tube and the flexible helical transport screw having a distal end, wherein said flexible helical transport screw is provided with helically extending transport surfaces and is rotatable by a drive means,
a stopper element located inside the flexible tube and engaging an inner surface of the flexible tube, the stopper element configured to provide an abutment for the distal end of the flexible helical transport screw as the distal end of the flexible helical transport screw travels distally relative to the stopper element, wherein the stopper element is provided spaced apart from the distal end of the catheter, thereby defining a distal region of the catheter extending from the stopper element in direction to the distal end of the catheter, which is free of rotational elements inside,
at least one suction opening for aspiration of said removable material into the inside of the flexible tube, wherein the at least one suction opening is provided in the distal region of the catheter.