US 12,390,236 B2
Thrombus removal device
Shawn Phillips, Belle Plaine, MN (US); Martin R. Willard, Burnsville, MN (US); Sarah E. Drilling, Minneapolis, MN (US); Alan M. Twomey, Minneapolis, MN (US); Wanda F. Dent, Chanhassen, MN (US); and Nathan K. Weidenhamer, Minneapolis, MN (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Mar. 10, 2021, as Appl. No. 17/197,856.
Prior Publication US 2022/0287729 A1, Sep. 15, 2022
Int. Cl. A61B 17/221 (2006.01); A61B 17/22 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 17/2202 (2013.01); A61B 2017/22084 (2013.01); A61B 2017/2212 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A medical device comprising:
an elongated support member;
an expandable element disposed on the elongated support member;
a stationary element comprising a first plurality of arms;
a proximal end cap on the elongated support member, wherein each arm of the first plurality of arms extends at least between a proximal portion of the expandable element and the elongated support member, wherein a proximal end of each arm of the first plurality of arms is directly coupled to the elongated support member via the proximal end cap, wherein the first plurality of arms is configured to segment a thrombus into smaller pieces as the thrombus moves through the stationary element, wherein the expandable element is configured to capture at least some of the smaller pieces, wherein the first plurality of arms is configured to self-expand radially outward relative to the elongated support member, and wherein the proximal end of each arm of the first plurality of arms is positioned between proximal and distal ends of the elongated support member such that when the elongated support member, the expandable element, and the stationary element are positioned in a blood vessel in which the thrombus is located, the proximal end of each arm of the first plurality of arms is configured to be positioned distal to at least a portion of the thrombus;
a movable element disposed radially inward from the stationary element, the movable element configured to move relative to the stationary element to macerate the thrombus as the thrombus moves through the stationary element, wherein the movable element comprises a second plurality of arms extending generally along the elongated support member; and
a movable element support structure on the elongated support member, wherein a proximal end of each arm of the second plurality of arms is rotatably coupled to the elongated support member via the movable element support structure, and wherein the proximal end cap and the movable element support structure are at least partially coextensive along the elongated support member,
wherein the movable element comprises a rotatable element,
wherein the medical device further comprises a rotatable tube disposed around the elongated support member, and
wherein the rotatable element is coupled to the rotatable tube and is configured to rotate about a longitudinal axis of the elongated support member to rotate the rotatable element relative to the stationary element.
 
19. A medical device comprising:
an elongated support member;
an expandable element disposed on the elongated support member;
a stationary element comprising a first plurality of arms;
a proximal end cap on the elongated support member, wherein each arm of the first plurality of arms extends at least between a proximal portion of the expandable element and the elongated support member, wherein a proximal end of each arm of the first plurality of arms is directly coupled to the elongated support member via the proximal end cap, wherein the first plurality of arms is configured to segment a thrombus into smaller pieces as the thrombus moves through the stationary element, wherein the expandable element is configured to capture at least some of the smaller pieces, wherein the first plurality of arms is configured to self-expand radially outward relative to the elongated support member, and wherein the proximal end of each arm of the first plurality of arms is positioned between proximal and distal ends of the elongated support member such that when the elongated support member, the expandable element, and the stationary element are positioned in a blood vessel in which the thrombus is located, the proximal end of each arm of the first plurality of arms is configured to be positioned distal to at least a portion of the thrombus;
a movable element disposed radially inward from the stationary element, the movable element configured to move relative to the stationary element to macerate the thrombus as the thrombus moves through the stationary element, wherein the movable element comprises a second plurality of arms extending generally along the elongated support member; and
a movable element support structure on the elongated support member, wherein a proximal end of each arm of the second plurality of arms is rotatably coupled to the elongated support member via the movable element support structure, and wherein the proximal end cap and the movable element support structure are at least partially coextensive along the elongated support member,
wherein the medical device further comprises a rotatable tube disposed around the elongated support member, and wherein the rotatable tube is coupled to a distal end of each arm of the second plurality of arms, the rotatable tube being configured to rotate about a longitudinal axis of the elongated support member to rotate the movable element relative to the stationary element.