Steerable device having a corewire within a tube and combination with a functional medical component
First Claim
1. An embolism protection device comprising a tube with a lumen, a corewire that extends from the distal end to the proximal end of the tube through the lumen of the tube, and a bundle of at least 50 fibers having a first end and a second end,wherein the first end of the fibers are collectively attached to move with the tube, the second end of the fibers are collectively attached to move with the corewire at a location distal to the distal end of the tube,wherein the device has a first narrow profile configuration with a bundle of fibers being generally aligned and the respective ends of the fiber bundle being generally twisted relative to each other about an axis aligned along the corewire,wherein the device has an extended second configuration with the unattached portion of the fibers flare outward with respect to the first narrow profile configuration to form a three dimensional porous filtration matrix to fill the lumen of a vessel,wherein the transition between the first and second configurations of the device are achieved through longitudinal movement of the corewire relative to the tube, andwherein the device has structure that limits the longitudinal motion of the corewire relative to the tube.
2 Assignments
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Accused Products
Abstract
An integrated guiding device has a tube and a corewire within the tube and a torque coupler. The torque coupler can couple the rotational motion of the tube with the rotational motion of the corewire. The wire can be moved longitudinally at least some amount relative to the tube. The device can further comprise a functional medical structure, such as an embolism protection structure. The device can be used in medical procedures, such as less invasive procedures within the cardiovascular system. Improved fiber based embolism protection devices comprise fiber bundles that are twisted prior to delivery.
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Citations
20 Claims
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1. An embolism protection device comprising a tube with a lumen, a corewire that extends from the distal end to the proximal end of the tube through the lumen of the tube, and a bundle of at least 50 fibers having a first end and a second end,
wherein the first end of the fibers are collectively attached to move with the tube, the second end of the fibers are collectively attached to move with the corewire at a location distal to the distal end of the tube, wherein the device has a first narrow profile configuration with a bundle of fibers being generally aligned and the respective ends of the fiber bundle being generally twisted relative to each other about an axis aligned along the corewire, wherein the device has an extended second configuration with the unattached portion of the fibers flare outward with respect to the first narrow profile configuration to form a three dimensional porous filtration matrix to fill the lumen of a vessel, wherein the transition between the first and second configurations of the device are achieved through longitudinal movement of the corewire relative to the tube, and wherein the device has structure that limits the longitudinal motion of the corewire relative to the tube.
Specification