System and method for vessel access closure
First Claim
Patent Images
1. An apparatus for closing a hole in a vessel comprising:
- (a) a closure device that is insertable into the vessel through the hole, the closure device being expandable from a substantially cylindrical collapsed state to a substantially cylindrical expanded state when placed under tension at one or more locations at its periphery to a geometry sufficient to substantially occlude the hole;
(b) one or more tensioning members coupled to one or more peripheral locations on the closure device and capable of placing the closure device under tension at the peripheral locations to cause the closure device to expand into the substantially cylindrical expanded state; and
(c) a cinching member that engages the one or more tensioning members and is capable of causing them to put the closure device under tension at said peripheral locations and expand to the geometry whereby the hole is substantially occluded and to maintain said closure device in the expanded state.
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Abstract
Embodiments are described for closing vascular access ports, such as arteriotomies, which involve placement and deployment of an expandable device configured to prevent blood flow across a subject arteriotomy while also keeping disturbance of intravascular flow to a minimum. Suitable prostheses may comprise one or more frames constructed from lengths of flexible materials, such as shape memory alloys or polymers. Such frames may be coupled to sheetlike or tube-like structures configured to spread loads, minimize thrombosis which may be related to intravascular flow, and maintain hemostasis.
58 Citations
29 Claims
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1. An apparatus for closing a hole in a vessel comprising:
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(a) a closure device that is insertable into the vessel through the hole, the closure device being expandable from a substantially cylindrical collapsed state to a substantially cylindrical expanded state when placed under tension at one or more locations at its periphery to a geometry sufficient to substantially occlude the hole; (b) one or more tensioning members coupled to one or more peripheral locations on the closure device and capable of placing the closure device under tension at the peripheral locations to cause the closure device to expand into the substantially cylindrical expanded state; and (c) a cinching member that engages the one or more tensioning members and is capable of causing them to put the closure device under tension at said peripheral locations and expand to the geometry whereby the hole is substantially occluded and to maintain said closure device in the expanded state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. In an apparatus for closing a hole in a vessel of the type comprising an expandable closure device configured to be inserted into the lumen of a blood vessel, the improvement comprising:
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(a) the closure device being expandable from a substantially cylindrical collapsed state to a substantially cylindrical expanded state when placed under tension at one or more locations at its periphery to a geometry sufficient to substantially occlude the hole; (b) one or more tensioning members coupled to one or more peripheral locations on the closure device and capable of placing the closure device under tension at the peripheral locations to cause the closure device to expand into the substantially cylindrical expanded state; and (c) a cinching member that engages the one or more tensioning members and is capable of causing them to put the closure device under tension at said peripheral locations and expand to the geometry whereby the hole is substantially occluded and to maintain said closure device in the expanded state. - View Dependent Claims (26, 27, 28, 29)
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Specification