US 11,944,343 B2
Aspiration catheter including mechanical cutter
Ujwal Jalgaonkar, Irvine, CA (US); and Syamala Rani Pulugurtha, Irvine, CA (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on May 5, 2021, as Appl. No. 17/308,830.
Prior Publication US 2022/0354528 A1, Nov. 10, 2022
Int. Cl. A61B 17/3207 (2006.01); A61B 17/00 (2006.01); A61B 17/32 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/32075 (2013.01) [A61B 2017/00557 (2013.01); A61B 2017/320012 (2013.01); A61B 2017/320064 (2013.01); A61B 2090/034 (2016.02); A61B 2090/08021 (2016.02); A61B 2217/005 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A medical device comprising:
an elongated body comprising an expandable member disposed at a distal portion of the elongated body, the elongated body further comprising an interior surface defining an inner lumen, wherein the expandable member defines an expandable distal mouth of the elongated body, the expandable distal mouth being open to the inner lumen;
a rotatable cutting tool located within the inner lumen of the elongated body, the rotatable cutting tool configured to segment a thrombus into smaller pieces while an aspiration force pulls the thrombus proximally into the inner lumen;
an intermediate structure oriented radially between the rotatable cutting tool and the interior surface of the elongated body, the intermediate structure configured to prevent the cutting tool from contacting the interior surface of the elongated body, wherein the intermediate structure is configured to move longitudinally through the inner lumen; and
a stopper configured to limit movement of the cutting tool distally past a distal end of the expandable member, wherein the stopper is configured to engage with a lip extending radially inward from the interior surface of the elongated body.