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US 11,872,359 B2Granted
Expandable-tip aspiration guide catheter
AssigneeCovidien LP
InventorsSyamala Rani Pulugurtha, Maria De Jesus Sanson
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Abstract
In some examples, a catheter includes an elongated body and an expandable member at a distal portion of the elongated body and defining at least part of a distal tip of the catheter. The expandable member includes a flexible membrane and an expandable ring or partial ring located at a distal portion of the expandable member, wherein the expandable ring or partial ring is configured to expand radially outward in response to electrical energy applied to the expandable ring or partial ring.
Claims20
A catheter comprising:
- an elongated body comprising a proximal body portion and a distal body portion;
- an expandable member located at the distal body portion, the expandable member defining a distal section and a proximal section between the elongated body and the distal section, wherein the expandable member comprises:
- a flexible membrane;
- and
- an expandable ring or partial ring located at the distal section of the expandable member, the expandable ring or partial ring being configured to expand radially outward in response to electrical energy applied to the expandable ring or partial ring;
- and
- an electrical conductor extending along the elongated body, the electrical conductor configured to deliver the electrical energy from an energy source to the expandable ring or partial ring,
- wherein the proximal section of the expandable member is not configured to resistively heat in response to the electrical energy delivered from the electrical conductor.
5 more elements
A method of aspirating a clot, comprising:
- distally advancing a catheter within a vasculature of a patient toward the clot, wherein the catheter comprises an expandable member comprising a flexible membrane and an expandable ring or partial ring, the expandable member defining a distal section and a proximal section between the elongated body and the distal section;
- closing an electrical switch to apply electrical energy via an electrical conductor to the expandable ring or partial ring to cause the expandable member to expand radially outward wherein the proximal section of the expandable member is not configured to resistively heat in response to the electrical energy delivered from the electrical conductor;
- actuating a suction force to aspirate the clot;
- opening the electrical switch to cause the expandable member to contract radially inward;
- and
- proximally withdrawing the catheter from the vasculature of the patient.
3 more elements
A system comprising:
- an energy source;
- and
- a catheter comprising:
- an elongated body comprising a proximal body portion and a distal body portion;
- and
- an expandable member located at the distal body portion, wherein the expandable member is configured to expand radially outward, the expandable member defining a distal section and a proximal section between the elongated body and the distal section, and wherein the expandable member comprises:
- a flexible membrane;
- and
- an expandable ring or partial ring located at a distal section of the expandable member, the expandable ring or partial ring being configured to expand radially outward in response to electrical energy applied from the energy source to the expandable ring or partial ring;
- and
- an electrical conductor extending along the elongated body, the electrical conductor configured to deliver the electrical energy from an energy source to the expandable ring or partial ring,
- wherein the proximal section of the expandable member is not configured to resistively heat in response to the electrical energy delivered from the electrical conductor.
9 more elements
Dependencies are inferred from the claim text.