US 11,944,334 B2
Electrically enhanced retrieval of material from vessel lumens
Gaurav Girdhar, Ladera Ranch, CA (US); and Hoai (Kevin) Nguyen, Westminster, CA (US)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 7, 2021, as Appl. No. 17/450,236.
Application 17/303,208 is a division of application No. 16/024,408, filed on Jun. 29, 2018, granted, now 11,090,071, issued on Aug. 17, 2021.
Application 17/450,236 is a continuation of application No. 17/303,208, filed on May 24, 2021.
Claims priority of provisional application 62/688,636, filed on Jun. 22, 2018.
Prior Publication US 2022/0022899 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/12 (2006.01); A61B 17/22 (2006.01); A61B 17/221 (2006.01); A61M 25/00 (2006.01); A61M 25/01 (2006.01); A61M 25/09 (2006.01); A61M 25/10 (2013.01); A61N 1/378 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 17/12109 (2013.01); A61B 17/12136 (2013.01); A61B 17/12168 (2013.01); A61B 17/22031 (2013.01); A61B 17/22032 (2013.01); A61M 25/0021 (2013.01); A61M 25/0105 (2013.01); A61M 25/09 (2013.01); A61M 25/1018 (2013.01); A61N 1/378 (2013.01); A61B 2017/00778 (2013.01); A61B 2017/00929 (2013.01); A61B 2017/22034 (2013.01); A61B 2017/2215 (2013.01); A61B 2217/005 (2013.01); A61M 2025/0042 (2013.01); A61M 2025/0166 (2013.01); A61M 2025/09008 (2013.01); A61M 2025/091 (2013.01); A61M 2025/109 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A thrombectomy system, comprising:
a power source;
a first catheter;
a second catheter configured to be slidably received through a lumen of the first catheter, wherein the second catheter is an aspiration catheter;
a third catheter configured to be slidably received through the lumen of the first catheter;
an elongated member configured to be slidably received through a lumen of the third catheter, the elongated member having a proximal end coupled to the power source and a distal end configured to be positioned within a blood vessel at or near a thrombus;
an electrode configured to be electrically coupled to the power source, wherein the electrode is carried by a distal portion of one of the first catheter, the second catheter, the third catheter, or the elongated member; and
an interventional element carried by the distal end of the elongated member and coupled to the power source, wherein the interventional element includes a first metallic material and a second metallic material disposed on the first metallic material along at least a portion of the interventional element, and wherein the power source is configured to deliver a current to the interventional element to positively charge the interventional element and promote adhesion of the thrombus thereto.