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US 11,944,334 B2Granted
Electrically enhanced retrieval of material from vessel lumens
AssigneeCovidien LP
InventorsGaurav Girdhar, Hoai (Kevin) Nguyen
Life of this patent
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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.
Claims17
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.
5 more elements
A thrombectomy system, comprising:
- a first catheter;
- a second catheter configured to be slidably received through a lumen of the first catheter, wherein the second catheter is configured to apply negative pressure at a treatment site;
- a third catheter configured to be slidably received through a 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 configured to be coupled to a 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 at the distal end of the elongated member, 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 via the elongated member to positively charge the interventional element and promote adhesion of the thrombus thereto.
4 more elements
Dependencies are inferred from the claim text.