Stent with valve and method of use thereof
First Claim
1. A valve device comprising an elongate, self-expanding, medical stent for a bodily lumen, which stent has a radially-compressed delivery configuration and a radially-expanded deployed configuration, the stent defining in said deployed configuration a stent lumen for flow of a bodily fluid lengthwise with respect to the stent within the bodily lumen and lengthwise within the bodily lumen, the stent supporting a valve leaflet which can move, in the deployed configuration tof the stent, between an open configuration to allow fluid flow along said stent lumen in one direction and a closed configuration in which the leaflet resists fluid flow along the stent lumen in a direction opposite to said one direction;
- characterised in that;
said leaflet has a free periphery unattached to the stent and a resilient wire which extends around a substantial part of the length of said free periphery whereby, upon self-expansion of the stent from the delivery to the deployed configuration, the wire brings the leaflet into a disposition in which the leaflet extends across the stent lumen to an extent sufficient to permit fluid pressure differentials across the ends of the stent lumen to move the leaflet between its open and closed configurations.
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Accused Products
Abstract
A heart valve stent (25) and method for treating a patient with a fluid circulatory system defect is provided. The stent has a metal stent body (14), which is expandable from a compressed state to an expanded state. The stent body in the expanded state has a hollow structure and a leaflet (10) attached thereto with the leaflet movable from an open to a closed position to allow unidirectional fluid circulation and to prevent non-unidirectional fluid circulation through the hollow structure, which is translucent to magnetic resonance imaging signals by not producing eddy currents in response thereto.
635 Citations
25 Claims
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1. A valve device comprising an elongate, self-expanding, medical stent for a bodily lumen, which stent has a radially-compressed delivery configuration and a radially-expanded deployed configuration, the stent defining in said deployed configuration a stent lumen for flow of a bodily fluid lengthwise with respect to the stent within the bodily lumen and lengthwise within the bodily lumen, the stent supporting a valve leaflet which can move, in the deployed configuration tof the stent, between an open configuration to allow fluid flow along said stent lumen in one direction and a closed configuration in which the leaflet resists fluid flow along the stent lumen in a direction opposite to said one direction;
characterised in that;
said leaflet has a free periphery unattached to the stent and a resilient wire which extends around a substantial part of the length of said free periphery whereby, upon self-expansion of the stent from the delivery to the deployed configuration, the wire brings the leaflet into a disposition in which the leaflet extends across the stent lumen to an extent sufficient to permit fluid pressure differentials across the ends of the stent lumen to move the leaflet between its open and closed configurations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A stent for treating a patient with a fluid circulatory system defect, comprising:
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a stent body expandable from a compressed state to an expanded state; and
the stent body in the expanded state having a hollow structure and a leaflet attached thereto, the leaflet movable from an open to a closed position to allow unidirectional fluid circulation and to prevent non-unidirectional fluid circulation through the hollow structure. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A stent for treating a patient with a fluid circulatory system defect, comprising:
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a metal stent body expandable from a compressed state to an expanded state; and
the stent body in the expanded state having a hollow structure translucent to magnetic resonance imaging signals by not producing eddy currents in response thereto. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method of treating a patient with a fluid circulatory system defect, comprising:
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a stent expandable from a compressed state to an expanded state;
inserting the stent surgically under local anesthesia at a first point in the circulatory system in a contracted state;
guiding the stent to a second point in the fluid circulatory system; and
expanding the stent to the expanded state to correct the fluid circulatory system defect, the stent in the expanded state having a hollow structure translucent to magnetic resonance imaging signals by not producing eddy currents in response thereto.
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Specification