Systems, methods and devices for removing obstructions from a blood vessel
AssigneeCONCENTRIC MEDICAL, INC., A Delaware Corporation
InventorsIvan Sepetka, Martin Dieck, Son Gia, John Miller, Ryan Pierce, Maria Aboytes, Tiffany Tran Ngo
Life of this patent
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Abstract
Devices and methods for removing an obstruction from a blood vessel are described. The devices are deployed in a collapsed condition and are then expanded within the body. The devices are then manipulated to engage and remove the obstruction.
Claims15
1-28. (canceled)
The method of claim 21, wherein:
- the expanding step is carried out with the element forming a plurality of coils having an axis which is substantially parallel to a longitudinal axis of the device.
The method of claim 21, wherein:
- the expanding step is carried out with the element forming coils having an axis which is substantially perpendicular to a longitudinal axis of the device.
The method of claim 21, wherein:
- the expanding step is carried out so that a distal part of the element expands distal to the obstruction and another part of the element expands within the obstruction.
A device for removing an obstruction from a blood vessel, comprising:
- an elongate obstruction removing element;
- at least one strand extends alongside the elongate obstruction removing element;
- wherein the element is movable from a collapsed position to an expanded position, the element being naturally biased toward the expanded position, the element being in a collapsed and substantially straight configuration when in the collapsed position, the main element being rotated within the blood vessel to cause the strand to become entangled with the element at locations dependent upon permitted expansion of the element within the blood vessel.
An endovascular device for removing material from a blood vessel, comprising the steps of:
- providing a device having a main element and at least one flexible filament wrapped around the main element, the main element being naturally biased toward an expanded condition;
- positioning the device in a delivery catheter so that the element is held in a substantially straight configuration;
- moving the device outside the delivery catheter so that the device expands toward the expanded condition;
- rotating the main element relative to the flexible filament so that the flexible filament begins to unwind relative to the main element;
- and
- removing material from the blood vessel using the device.
42-73. (canceled)
Dependencies are inferred from the claim text.