Stent-valve and deployment catheter for use therewith
First Claim
1. A stent-valve device comprising:
- a non-collapsible valve component; and
a stent component having a first ring connected to a second ring, said first ring having a characteristic first diameter and a valve support which supports said valve component, and said second ring being contractible and expandable between a second diameter less than a third diameter, wherein said second diameter is less than said first diameter and said third diameter is greater than said first diameter.
1 Assignment
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Accused Products
Abstract
A stent-valve device includes a non-collapsible valve component and a stent component having a first ring connected to a second ring. The first ring has a characteristic first diameter and a valve support for supporting the valve component. The second ring is contractible and expandable between a second diameter less than a third diameter. The second diameter is less than the first diameter and the third diameter is greater than the first diameter. The first ring preferably includes a plurality of elements that extend downward to feet that project radially inward. The valve component rests on the feet for support. A seal is preferably disposed about the first ring. The valve component may be mechanical valve prosthesis, a bio-prosthesis (such as a non-collapsible porcine valve) or a polymer-based prosthesis. In another aspect of the invention, a deployment catheter is provided for effectively deploying the stent-valve device(s) described herein.
180 Citations
40 Claims
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1. A stent-valve device comprising:
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a non-collapsible valve component; and
a stent component having a first ring connected to a second ring, said first ring having a characteristic first diameter and a valve support which supports said valve component, and said second ring being contractible and expandable between a second diameter less than a third diameter, wherein said second diameter is less than said first diameter and said third diameter is greater than said first diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a stent-valve device including a valve component, and a stent component having a first ring connected to a second ring, said first ring having a characteristic first diameter and a valve support which supports said valve component, and said second ring being contractible and expandable between a contracted state and an expanded state, said contracted state having a second diameter less than a third diameter of said expanded state, wherein said second diameter is less than said first diameter and said third diameter is greater than said first diameter; and
a deployment catheter including a first housing that is adapted to store said second ring in its contracted state, and means for moving said first housing axially to deploy said second ring from said first housing whereby it expands to its expanded state. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A surgical method comprising:
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providing an apparatus comprising a stent-valve device loaded into a deployment catheter, said stent-valve device including a valve component and a stent component having a first ring connected to a second ring, said first ring having a characteristic first diameter and a valve support for supporting said valve component, and said second ring being contractible and expandable between a contracted state and an expanded state, said contracted state having a second diameter less than a third diameter of said expanded state, wherein said second diameter is less than said first diameter and said third diameter is greater than said first diameter, and said deployment catheter including a first housing that stores said second ring in its contracted state, and means for effectuating axial movement of said first housing relative to said second ring;
inserting said apparatus into the body and guiding said deployment catheter to an intended deployment site;
axially moving said first housing relative to said second ring to cause said second ring to deploy from said first housing and automatically expand from its contracted state to its expanded state, whereby in its expanded state said second ring fixates said stent-valve device to an inner wall of a blood vessel at or near the intended deployment site; and
retracting said deployment catheter to remove it from the human body. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification