Vessel occlusion device and method of using same
First Claim
1. A vessel occluder device comprising:
- an occluder element; and
a frame, the frame comprising;
a collar, the collar disposed about a longitudinal axis of the vessel occluder device, the collar disposed at a proximal end of the frame;
an occluder element support portion defining a region disposed about the longitudinal axis, wherein the occluder element is attached to the occluder element support portion such that the occluder element is configured to substantially prevent fluid from flowing through the vessel occluder device; and
multiple support struts that each extend from the collar to respective proximal apices of the occluder element support portion,wherein the collar, the occluder element support portion, and the multiple support struts are formed from a single piece of precursor material including a tube of shape memory material cut to form a single ring that defines the collar and a plurality of strut elements extending from the single ring to define the support struts, the tube being thermally treated to define an initial, tapered configuration.
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Accused Products
Abstract
An improved embolic filter frame is provided. The filter frame provides enhanced longitudinal compliance, improved sealing, low profile delivery, and short deployed length. The looped support struts have high “radial” stiffness with low “longitudinal” stiffness. When deployed, the frame exerts a relatively high stress onto a vessel wall to maintain an effective seal, yet remains longitudinally compliant. Minor displacements of the support wire or catheter are therefore not translated to the filter. The looped support struts elongate when tensioned and assume a compressed and essentially linear form. When the delivery catheter constraint is removed, the struts “snap open” and assume a looped configuration, exerting a high degree of force onto the vessel wall, creating an enhanced filter to vessel wall seal.
245 Citations
21 Claims
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1. A vessel occluder device comprising:
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an occluder element; and a frame, the frame comprising; a collar, the collar disposed about a longitudinal axis of the vessel occluder device, the collar disposed at a proximal end of the frame; an occluder element support portion defining a region disposed about the longitudinal axis, wherein the occluder element is attached to the occluder element support portion such that the occluder element is configured to substantially prevent fluid from flowing through the vessel occluder device; and multiple support struts that each extend from the collar to respective proximal apices of the occluder element support portion, wherein the collar, the occluder element support portion, and the multiple support struts are formed from a single piece of precursor material including a tube of shape memory material cut to form a single ring that defines the collar and a plurality of strut elements extending from the single ring to define the support struts, the tube being thermally treated to define an initial, tapered configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of occluding a vessel, the method comprising:
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delivering a vessel occluder device that is configured in a constrained configuration within a lumen of a delivery device to a target location within the vessel, wherein the vessel occluder device comprises; an occluder element; and a frame comprising; a collar, the collar disposed about a longitudinal axis of the vessel occluder device, the collar disposed at a proximal end of the frame; an occluder element support portion defining a region disposed about the longitudinal axis, wherein the occluder element is attached to the occluder element support portion; and multiple support struts that each extend from the collar to respective proximal apices of the occluder element support portion, wherein the collar, the occluder element support portion, and the multiple support struts are formed from a single piece of precursor material including a tube of shape memory material cut to form a single ring that defines the collar and a plurality of strut elements extending from the single, ring to define the support struts, the tube being thermally treated to define an initial, tapered configuration; and deploying the vessel occluder device out of the lumen of the delivery device to the target location within the vessel, wherein the vessel occluder device self-expands to a deployed configuration such that an outer periphery of the vessel occluder device is in contact with a wall of the vessel, and such that the occluder element substantially prevents fluid within the vessel from flowing through the vessel occluder device. - View Dependent Claims (17, 18, 19, 20)
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21. A method of occluding a vessel, the method comprising:
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delivering a vessel occluder device that is configured in a constrained configuration within a lumen of a delivery device to a target location within the vessel, wherein the vessel occluder device includes, an occluder element, and a frame including, a collar disposed about a longitudinal axis of the vessel occluder device at a proximal end of the frame, a support wire releasably coupled to the collar, an occluder element support portion defining a region disposed about the longitudinal axis, wherein the occluder element is attached to the occluder element support portion, and multiple support struts that each extend from the collar to respective proximal apices of the occluder element support portion, wherein the collar, the occluder element support portion, and the multiple support struts are formed from a single piece of precursor material; deploying the vessel occluder device out of the lumen of the delivery device to the target location within the vessel including distally translating the support wire in relation to the lumen, wherein the vessel occluder device self-expands to a deployed configuration such that an outer periphery of the vessel occluder device is in contact with a wall of the vessel, and such that the occluder element substantially prevents fluid within the vessel from flowing through the vessel occluder device, wherein the deploying the vessel occluder device out of the lumen; and decoupling the support wire from the collar after deploying the vessel occluder device out of the lumen.
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Specification