US 12,076,020 B2
Retrieval of material from corporeal lumens
John Wainwright, Foothill Ranch, CA (US); Hoai Nguyen, Westminster, CA (US); and James Davidson, San Juan Capistrano, CA (US)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Nov. 18, 2021, as Appl. No. 17/455,646.
Prior Publication US 2023/0149021 A1, May 18, 2023
Int. Cl. A61B 17/12 (2006.01)
CPC A61B 17/12109 (2013.01) [A61B 17/1214 (2013.01); A61B 17/12168 (2013.01); A61B 2017/1205 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A treatment device, comprising:
an elongated member having a proximal portion and a distal portion configured to be positioned within a blood vessel at a treatment site at or near a thrombus; and
a distal element having a proximal end portion and a distal end portion, the proximal end portion being coupled to the distal portion of the elongated member via a connection assembly, wherein the distal element comprises:
a plurality of woven filaments defining a non-expandable extension portion at the proximal end portion of the distal element and an expandable body portion distal of the extension portion, wherein, along the extension portion, the filaments extend in a direction substantially parallel with a longitudinal axis of the elongated member, and wherein the body portion comprises (a) a first portion along which the filaments extend radially outwardly and extend substantially linearly, and (b) a second portion along which the filaments are interwoven and wrap around all or a portion of the circumference of the distal element, and
a cover disposed on the filaments along all or a portion of a length of the distal element,
wherein the distal element has a constrained state for delivery to the treatment site and an expanded state in which at least a portion of the body is configured to expand into contact with the blood vessel wall at the treatment site and anchor and/or stabilize the elongated member within the blood vessel.