Electrically enhanced retrieval of material from vessel lumens
AssigneeCovidien LP
InventorsHoai (Kevin) Nguyen, Gaurav Girdhar, Andy Huynh
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.
Claims18
An aspiration device, comprising:
- an aspiration catheter having a distal end configured to be positioned adjacent to a thrombus in a blood vessel and a proximal end;
- a suction source configured to supply negative pressure through the catheter to aspirate a region adjacent to the distal end of the catheter;
- a first electrode disposed at a distal portion of the catheter;
- a first conductive lead coupled to the first electrode and extending along a length of the catheter;
- a second electrode comprising an expandable member coupled to an outer surface of the catheter;
- a second conductive lead coupled to the second electrode;
- and
- an extracorporeal power supply having positive and negative terminals, the first conductive lead being coupled to the positive terminal and the second conductive lead being coupled to the negative terminal.
An aspiration device, comprising:
- an aspiration catheter having a distal end configured to be positioned adjacent to a thrombus in a blood vessel and a proximal end;
- a suction source configured to supply negative pressure through the catheter to aspirate a region adjacent to the distal end of the catheter;
- a first electrode disposed at a distal portion of the catheter;
- a first conductive lead coupled to the first electrode and extending along a length of the catheter;
- a second electrode comprising a flow-arrest element coupled to the catheter;
- a second conductive lead coupled to the second electrode;
- and
- an extracorporeal power supply having positive and negative terminals, the first conductive lead being coupled to the positive terminal and the second conductive lead being coupled to the negative terminal.
An aspiration device, comprising:
- a suction source;
- an aspiration catheter fluidically coupleable to the suction source, the aspiration catheter having a lumen and a distal end configured to be disposed at a treatment site within a corporeal vessel to aspirate material from the treatment site;
- a delivery electrode carried by a distal portion of the aspiration catheter;
- a return electrode comprising a conductive element extending around an outer surface of the aspiration catheter;
- and
- an extracorporeal power supply electrically coupleable to the delivery electrode and the return electrode such that the delivery electrode is positively charged when the power supply is activated.
Dependencies are inferred from the claim text.