Assembly for placing a prosthetic valve in a duct in the body
First Claim
1. A prosthetic valve assembly comprising:
- an implantable prosthetic valve; and
a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of a native body lumen in a manner so as to resist migration and at least one zone that is configured not to bear against a wall of a native body lumen when the stent is in an expanded state,wherein the valve is mounted on the stent such that, when expanded, the valve is positioned substantially within the zone that does not bear against a wall of a native body lumen.
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Accused Products
Abstract
The present invention is an assembly comprising a prosthetic valve to be implanted; a radially expandable stent comprising at least one zone intended to be expanded to allow the stent, in the expanded state, to bear against the wall of the body duct to be fitted with the valve, this bearing making it possible to immobilize this stent with respect to this wall; and means for mounting the valve with respect to the stent, making it possible to connect the valve to the stent in such a way that the placement of the stent allows the valve to be mounted in the body duct, and expansion means such as a balloon catheter being provided to trigger expansion of the stent at the implantation site. According to the invention, the valve and the stent are designed in such a way that, at the moment when the stent is expanded, the valve is situated outside the zone or zones of the stent that are subjected to said expansion means. The invention thus consists in separating the valve and said zone or zones to be expanded, so that the expansion of the stent can be effected with an expansion force suitable for perfect anchoring of this stent in the wall of the body duct to be fitted with the valve, and without any risk of destruction or damage of the valve.
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Citations
47 Claims
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1. A prosthetic valve assembly comprising:
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an implantable prosthetic valve; and a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of a native body lumen in a manner so as to resist migration and at least one zone that is configured not to bear against a wall of a native body lumen when the stent is in an expanded state, wherein the valve is mounted on the stent such that, when expanded, the valve is positioned substantially within the zone that does not bear against a wall of a native body lumen. - 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, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A prosthetic valve assembly comprising:
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an implantable prosthetic valve; and a radially expandable stent comprising an inflow zone that is configured, in an expanded state, to bear against a wall of the native cardiac annulus, an expandable valve supporting zone that projects radially inwardly from the inflow zone and into the ascending aorta, and an expandable outflow zone configured, in an expanded state, to bear against a wall of the ascending aorta above the location of the coronary ostia, wherein the valve is mounted on the stent such that, when expanded, the valve is positioned substantially within the valve supporting zone. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47)
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Specification