Aspiration catheter
AssigneeGravity Medical Technology, Inc.
InventorsShashvat M. Desai, Ashutosh P. Jadhav, Kunakorn Atchaneeyasakul
Life of this patent
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Abstract
A device for aspirating a thrombus has an elongate shaft and a housing with an actuator coupled to the shaft. Pull wire lumens are disposed in a side wall of the elongate shaft and they have one end coupled to an actuator, and the opposite end coupled to the distal portion of the elongate shaft. Actuation of the actuator in a first direction steers the distal portion of the elongate shaft into a first configuration or changes a size or a shape of the lumen in the elongate shaft. Actuation of the actuator in the opposite direction releases tension in the pull wires to steer the elongate shaft into a second configuration or further changes the size or shape of the lumen.
Claims22
A device for aspirating thrombus from a patient, the device comprising:
- an elongate shaft having a proximal portion, a distal portion, a lumen extending therebetween, and a sidewall extending therebetween;
- a housing coupled to the proximal portion, the housing comprising an actuator coupled thereto;
- a plurality of pull wires disposed in the side wall of the elongate shaft, the plurality of pull wires each having a proximal end and a distal end,
- wherein the proximal ends of the plurality of pull wires are coupled to the actuator, and
- wherein the distal ends of the plurality of pull wires are coupled to the distal portion of the elongate shaft, and
- wherein actuation of the actuator in a first direction applies a force to at least some of the plurality of pull wires to steer the distal portion of the elongate shaft into a first configuration or to change a size of the lumen or change a shape of the lumen adjacent the distal end of the elongate shaft, and
- wherein actuation of the actuator in a second direction opposite the first direction releases the applied force in the at least some of the plurality of pull wires to steer the distal portion of the elongate shaft into a second configuration or to further change the size of the lumen or change the shape of the lumen adjacent the distal end of the elongate shaft.
The device of 1, wherein at least a portion of the elongate shaft is a braided shaft.
A method for changing a shape or a lumen size or lumen shape of a catheter, the method comprising:
- actuating an actuator on a handle coupled to a proximal end of an elongate shaft thereby applying a force in one or more pull wires disposed in a side wall of the elongate shaft,
- wherein the one or more pull wires are coupled to a distal end of the elongate shaft;
- and
- steering the distal end of the elongate shaft or changing a size or shape of a lumen in the elongate shaft adjacent the distal end of the elongate shaft as a result of the elongate shaft.
A method for removing a thrombus from a vessel in a patient, the method comprising:
- advancing an elongate shaft toward a clot;
- enlarging a lumen or changing a shape of the lumen in the elongate shaft;
- positioning the elongate shaft over the clot so that the clot is at least partially disposed in the lumen;
- reducing the lumen size or changing the lumen shape thereby capturing the clot in the lumen;
- and
- removing the clot from vessel with or without vacuum aspiration.
Dependencies are inferred from the claim text.