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US 11,944,332 B2Granted
Electrically enhanced retrieval of material from vessel lumens
AssigneeCovidien LP
InventorsGaurav Girdhar, Hoai (Kevin) Nguyen
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Abstract
Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the thrombectomy system. The system can include a catheter having a distal portion configured to be positioned adjacent to a thrombus in a blood vessel, an electrode disposed at the distal portion of the catheter, and an interventional element configured to be delivered through a lumen of the catheter. The electrode and the interventional element are each configured to be electrically coupled to an extracorporeal power supply.
Claims12
A thrombectomy system, comprising:
- a power source having a positive terminal;
- an 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;
- and
- an interventional element carried at the distal end of the elongated member and coupled to the positive terminal of 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, and
- wherein the first metallic material has a surface including an outward-facing portion that faces away from a central lumen of the interventional element, and wherein the second metallic material is disposed on the first metallic material only at the outward-facing portion and not at a remaining portion of the surface.
2 more elements
Dependencies are inferred from the claim text.