Vascular filter having articulation region and methods of use in the ascending aorta
First Claim
1. An apparatus for filtering emboli comprising:
- a guidewire having a proximal end and a distal end;
a sheath rigidly attached to the guidewire, the sheath having a proximally-facing cavity and a closed distal end;
an elongate shaft rigidly attached to an attachment member, wherein the attachment member is slidably received over the guidewire;
a support hoop attached to the elongate shaft; and
a blood permeable sac affixed to the support hoop;
wherein the support hoop forms a distally-facing mouth of the blood permeable sac.
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Accused Products
Abstract
Apparatus and methods are provided for use in filtering emboli from a vessel such as the ascending aorta, wherein a vascular device comprises a support hoop having an articulation region connected near a distal end of an elongated member, a blood permeable sac affixed to the support hoop so that the support hoop forms a mouth of the blood permeable sac, a guide wire, and a delivery sheath. The articulation region comprises a reduced thickness region of the support hoop that prevents kinks from forming in the support hoop when the apparatus is contracted to its delivery state, and curved regions that close the mouth of the sac to prevent material escaping from the sac when the apparatus is collapsed for removal.
81 Citations
18 Claims
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1. An apparatus for filtering emboli comprising:
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a guidewire having a proximal end and a distal end; a sheath rigidly attached to the guidewire, the sheath having a proximally-facing cavity and a closed distal end; an elongate shaft rigidly attached to an attachment member, wherein the attachment member is slidably received over the guidewire; a support hoop attached to the elongate shaft; and a blood permeable sac affixed to the support hoop; wherein the support hoop forms a distally-facing mouth of the blood permeable sac. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of filtering emboli, comprising:
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providing a filtering device comprising; a guidewire having a proximal end and a distal end; a sheath rigidly attached to the guidewire, the sheath having a proximally-facing cavity and a closed distal end; an elongate shaft rigidly attached to an attachment member, wherein the attachment member is slidably received over the guidewire; a support hoop attached to the elongate shaft; and a blood permeable sac affixed to the support hoop, the blood permeable sac actuatable between a contracted position and an expanded position; wherein the support hoop forms a distally-facing mouth of the blood permeable sac; positioning the mouth of the blood permeable sac within the sheath such that the blood permeable sac is in the contracted position; advancing the filtering device to a treatment site; deploying the blood permeable sac from the sheath at the treatment site such that the blood permeable sac expands to the expanded position. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification