Vascular device having one or more articulation regions and methods of use
First Claim
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1. Apparatus for filtering emboli or performing thrombectomy or embolectomy, the apparatus comprising:
- an elongated member having a distal region;
proximal and distal support hoops coupled to the distal region, each one of the proximal and distal support hoops having an articulation region interposed between curved regions; and
a blood permeable sac affixed at its proximal end to the proximal support hoop so that the proximal hoop forms a mouth of the blood permeable sac, and affixed at its distal end to the distal support hoop.
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Abstract
Apparatus and methods are provided for use in filtering emboli from a vessel and performing thrombectomy and embolectomy, wherein a vascular device comprises one or more support hoops, each having an articulation region connected near a distal end of a guide wire, and a blood permeable sac affixed to the support hoop or hoops to form a mouth of the blood permeable sac. The mouth of the sac closes when the apparatus is collapsed for removal to prevent material from escaping from the sac.
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Citations
25 Claims
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1. Apparatus for filtering emboli or performing thrombectomy or embolectomy, the apparatus comprising:
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an elongated member having a distal region;
proximal and distal support hoops coupled to the distal region, each one of the proximal and distal support hoops having an articulation region interposed between curved regions; and
a blood permeable sac affixed at its proximal end to the proximal support hoop so that the proximal hoop forms a mouth of the blood permeable sac, and affixed at its distal end to the distal support hoop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of trapping emboli or thrombus during a medical procedure, the method comprising:
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providing apparatus comprising an elongated member, proximal and distal support hoops coupled to the elongated member, each one of the proximal and distal support hoops having an articulation region, and a blood permeable sac affixed to the proximal and distal support hoops;
positioning the apparatus in a contracted delivery state within a delivery sheath;
advancing the delivery sheath to a desired location within a patient'"'"'s vessel;
withdrawing the delivery sheath; and
expanding the apparatus to a deployed state, wherein the proximal support hoop seals against the vessel wall. - View Dependent Claims (21, 22, 23, 24, 25)
providing an interventional device comprising a guide wire lumen;
percutaneously and transluminally advancing the interventional device for performing a medical procedure along the elongated member to position within the patient'"'"'s vessel at a location proximal of the apparatus;
performing the medical procedure, the apparatus catching emboli released when the medical procedure is performed;
retracting the apparatus into a collapsed configuration within the guide lumen of the interventional device; and
removing the interventional device and apparatus from the patient'"'"'s vessel.
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23. The method of claim 22, wherein retracting the apparatus within the guide wire lumen comprises folding each one of the proximal and distal support hoops at the articulation region.
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24. The method of claim 20, wherein providing apparatus comprises providing apparatus having a distal support hoop that is smaller than the proximal support hoop.
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25. The method of claim 20, wherein providing apparatus further comprises providing apparatus wherein the proximal and distal support hoops are coupled to a sheath slidably disposed on the elongated member, the method further comprising transmitting translational motion applied to the elongated member to the sheath without transmitting rotational motion applied to the elongated member.
Specification