Vascular device for emboli and thrombi removal and methods of use
First Claim
1. Apparatus suitable for filtering emboli, comprising:
- a guide wire having a proximal region, a distal region, and a floppy distal tip;
a filter attached to the distal region of the guide wire, the filter having a contracted configuration and an expanded configuration;
wherein the filter includes a support hoop having an articulation region and a blood permeable sac forming a proximal-facing mouth; and
a sheath comprising;
a lumen extending therethrough; and
a distal end having a locking wedge;
wherein the filter is disposed within the lumen of the sheath in the contracted configuration.
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Accused Products
Abstract
Apparatus and methods are provided for use in filtering emboli from a vessel and/or performing thrombectomy and embolectomy, wherein a vascular device disposed on a guidewire comprises a support hoop disposed from a suspension strut. Alternately, a support hoop having an articulation region may be directly connected to a region proximate the distal end of the guidewire. A blood permeable sac is affixed to the support hoop to form a mouth of the blood permeable sac. The support hoop is disposed obliquely relative to the longitudinal axis of the guidewire and is capable of being properly used in a wide range of vessel diameters. The vascular device collapses during removal to prevent material from escaping from the sac. A delivery sheath and introducer sheath for use with the vascular device of the present invention are also provided.
117 Citations
24 Claims
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1. Apparatus suitable for filtering emboli, comprising:
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a guide wire having a proximal region, a distal region, and a floppy distal tip; a filter attached to the distal region of the guide wire, the filter having a contracted configuration and an expanded configuration; wherein the filter includes a support hoop having an articulation region and a blood permeable sac forming a proximal-facing mouth; and a sheath comprising; a lumen extending therethrough; and a distal end having a locking wedge; wherein the filter is disposed within the lumen of the sheath in the contracted configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Apparatus suitable for filtering emboli, comprising:
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an elongated member having a distal region having a longitudinal axis; a filter frame disposed on the elongated member, the filter frame having a hoop portion at least partially forming a filter mouth and a curved strut portion extending longitudinally in a proximal direction, wherein the hoop portion includes a reduced thickness articulation region; and a polymeric blood permeable sac affixed to the hoop portion so that the filter mouth is a proximally facing mouth of the blood permeable sac. - View Dependent Claims (13, 14, 15, 16, 17)
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18. Apparatus suitable for filtering emboli, comprising:
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a guidewire having a proximal region and a distal region; a first support hoop attached to the distal region of the guidewire, the first support hoop having a contracted configuration and an expanded configuration, wherein the first support hoop forms a mouth for a first blood permeable sac attached thereto; a second support hoop slideably attached to the guidewire, the second support hoop having a contracted configuration and an expanded configuration, wherein the second support hoop forms a mouth for a second blood permeable sac attached thereto; the lumen of the sheath adapted to contain the first support hoop in the contracted configuration as well as the first blood permeable sac; and a second sheath comprising a lumen adapted to contain the second support hoop in the contracted configuration as well as the second blood permeable sac, wherein the second support hoop and second blood permeable sac are adapted to be advanced and retracted relative to the guidewire independently of the first support hoop and first blood permeable sac. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification