초록 ▼

A vascular closure system includes a suture and an anchor assembly. The anchor assembly includes a first anchor portion having a plurality of petal members automatically expandable from a retracted position for delivery through a vessel puncture in a vessel, and an expanded position when deployed wi

A vascular closure system includes a suture and an anchor assembly. The anchor assembly includes a first anchor portion having a plurality of petal members automatically expandable from a retracted position for delivery through a vessel puncture in a vessel, and an expanded position when deployed within the vessel. The anchor assembly also includes a second anchor portion connected to the suture and positioned distal of the first anchor portion within the vessel. Withdrawing the suture pulls the second anchor portion against the first anchor portion to contact the first anchor portion against an inner surface of the vessel adjacent to the vessel puncture. The vascular closure system may also include an automatic compaction assembly that automatically compacts a sealing member against the anchor assembly to seal closed the vessel puncture upon withdrawal of the vascular closure system.

대표청구항 ▼

1. A vascular closure system, comprising: a suture;an anchor assembly comprising: a first anchor portion having a base member and a plurality of petal members extending peripherally spaced around the base member, the base member comprising a first tapered surface, the plurality of petal members bein

1. A vascular closure system, comprising: a suture;an anchor assembly comprising: a first anchor portion having a base member and a plurality of petal members extending peripherally spaced around the base member, the base member comprising a first tapered surface, the plurality of petal members being automatically expandable from a retracted position for delivery through a vessel puncture in a vessel, and an expanded position when deployed within the vessel, the first anchor portion having a first width when in the retracted position, each of the plurality of petal members having a periphery and a stiffening rib extending around the periphery, each of the plurality of petal members being connected to the base member by a hinge, each of the stiffening ribs terminating at the hinges, each of the hinges comprising a groove on a first planar surface of the hinge and a protrusion on a second planar surface of the hinge opposite the first planar surface;a second anchor portion connected to the suture and positioned distal of the first anchor portion within the vessel, the second anchor portion comprising a second tapered surface, the second anchor portion having a second width, the second width being about equal to the first width;wherein withdrawing the suture pulls the second tapered surface of the second anchor portion against the first tapered surface of the first anchor portion to receive the first and second tapered surfaces against each other and to bring into contact the first anchor portion against an inner surface of the vessel adjacent to the vessel puncture. 2. A vascular closure system according to claim 1, wherein the plurality of petal members are oriented perpendicular to a longitudinal dimension of the anchor assembly when in the expanded position. 3. A vascular closure system according to claim 1, wherein the plurality of petal members extend proximally when in the retracted position. 4. A vascular closure system according to claim 1, wherein the plurality of petal members pivot in a single direction from the expanded position to the retracted position. 5. A vascular closure system according to claim 1, wherein each of the hinges comprises a living hinge. 6. A vascular closure system according to claim 1, wherein the first anchor portion includes an aperture defined within the first tapered surface. 7. A vascular closure system according to claim 1, wherein the first and second anchor portions are separate and distinct pieces. 8. A vascular closure system according to claim 1, wherein the second anchor portion includes a suture through hole configured for connecting the suture to the second anchor portion. 9. A vascular closure system according to claim 1, wherein at least some of the plurality of petal members include a suture aperture configured to pass a suture there through. 10. A vascular closure device, comprising: a suture;a two-piece anchor assembly, comprising: a first anchor portion having a base member and a plurality of petal members extending peripherally spaced around the base member, the base member comprising a first tapered surface, the plurality of petal members being configured to pivot into an expanded position upon positioning in a vessel, each of the plurality of petal members having a periphery and a stiffening rib extending around the periphery, each of the plurality of petal members being connected to the base member by a hinge, each of the stiffening ribs terminating at the hinges, each of the hinges comprising a groove on a first planar surface of the hinge and a protrusion on a second planar surface of the hinge opposite the first planar surface;a second anchor portion connected to the suture and configured to draw the first anchor portion against an inner surface of the vessel upon withdrawal of the second anchor portion, the second anchor portion comprising a second tapered surface, the second tapered surface being configured to contact the first tapered surface of the base member;a sealing member configured to advance along the suture and compact against the anchor assembly to seal closed a vessel puncture. 11. A vascular closure device according to claim 10, wherein the plurality of petal members each include a neck portion and a petal portion, the neck portion having a smaller maximum width than a maximum width of the petal portion. 12. A vascular closure device according to claim 10, wherein the first anchor portion comprises a shape memory material. 13. A vascular closure device according to claim 10, wherein the first anchor portion has a larger profile when in the expanded position than a profile of the second anchor portion.