Heart valve assistive prosthesis
First Claim
1. A device for placing in a cardiac valve to assist operation of natural cardiac valve leaflets, the device comprising:
- a frame for anchoring the device, comprising a first portion configured to be placed upstream of the cardiac annulus and a second portion configured to be placed downstream of the cardiac annulus, and shaped to prevent the entire frame from shifting downstream of the cardiac valve annulus; and
at least one anchor extension attached to the frame, the anchor extension configured and circumferentially arranged to extend downstream between the leaflets of the cardiac valve at commissures of the cardiac valve, long enough to extend below an edge of cardiac leaflets, away from a center axis of the frame and back upstream behind the natural leaflets, between the natural leaflet and a ventricle side wall, allowing movement of a natural cardiac leaflet, preventing the anchor extensions from shifting back from the downstream side of the annulus to the upstream side of the annulus.
1 Assignment
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Accused Products
Abstract
A device for placing in a cardiac valve to assist operation of natural cardiac valve leaflets, the device including a frame for anchoring the device, configured to be placed upstream of the cardiac annulus and shaped to prevent the frame from shifting downstream of the cardiac valve annulus, and at least one anchor extension attached to the frame, the anchor extension configured to extend through the leaflets of the cardiac valve at commissures of the cardiac valve and behind the natural leaflets, preventing the anchor extensions from shifting back from the downstream side of the annulus to the upstream side of the annulus. Related apparatus and methods are also described.
31 Citations
21 Claims
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1. A device for placing in a cardiac valve to assist operation of natural cardiac valve leaflets, the device comprising:
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a frame for anchoring the device, comprising a first portion configured to be placed upstream of the cardiac annulus and a second portion configured to be placed downstream of the cardiac annulus, and shaped to prevent the entire frame from shifting downstream of the cardiac valve annulus; and at least one anchor extension attached to the frame, the anchor extension configured and circumferentially arranged to extend downstream between the leaflets of the cardiac valve at commissures of the cardiac valve, long enough to extend below an edge of cardiac leaflets, away from a center axis of the frame and back upstream behind the natural leaflets, between the natural leaflet and a ventricle side wall, allowing movement of a natural cardiac leaflet, preventing the anchor extensions from shifting back from the downstream side of the annulus to the upstream side of the annulus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device for placing in a cardiac valve to assist operation of the cardiac valve, the device comprising:
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a frame for anchoring the device, comprising a first portion configured to be placed upstream of the cardiac annulus and a second portion configured to be placed downstream of the cardiac annulus, and shaped to prevent the entire frame from shifting downstream of the cardiac valve annulus; a sheet of flexible material attached to the frame, configured to be placed within the annulus of the cardiac valve, defining a lumen of the sheet extending from an upstream side of the annulus to a downstream side of the annulus; and at least one leaflet anchor extension attached to the frame, the leaflet anchor extension configured to be long enough to extend downstream beyond at least one leaflet of the cardiac valve, away from a center axis of the frame and back upstream behind the leaflet of the cardiac valve, circumventing the leaflet and allowing movement of the leaflet, preventing the anchor extension from shifting back from the downstream side of the annulus to the upstream side of the annulus. - View Dependent Claims (15, 16, 17, 18)
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19. A method of inserting a prosthesis for placing in a cardiac valve to assist operation of natural cardiac valve leaflets comprising:
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inserting a delivery system which includes a sheath covering the prosthesis into a left atrium from the left ventricle; retracting a portion of the sheath until commissure anchors of the prosthesis are at least partially uncovered; rotating the delivery system such that commissure anchors are next to corresponding commissures; translating the delivery system so as to locate tips of the commissure anchors at the bottom of an annulus of the cardiac valve; and retracting the sheath until rest of the prosthesis is uncovered. - View Dependent Claims (20)
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21. A device for placing in a cardiac valve to assist operation of natural cardiac valve leaflets, the device comprising:
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a frame for anchoring the device, comprising a first portion configured to be placed upstream of the cardiac annulus and a second portion configured to be placed downstream of the cardiac annulus, and shaped to prevent the entire frame from shifting downstream of the cardiac valve annulus; and at least one anchor extension attached to the frame at a first location, the anchor extension configured and circumferentially arranged to extend downstream between the leaflets of the cardiac valve at commissures of the cardiac valve, long enough to extend below an edge of cardiac leaflets, away from a center axis of the frame and back upstream behind the natural leaflets, between the natural leaflet and a ventricle side wall, and attached back to the frame at a second location, allowing movement of a natural cardiac leaflet, preventing the anchor extensions from shifting back from the downstream side of the annulus to the upstream side of the annulus.
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Specification