Assembly for placing a prosthetic valve in a duct in the body
First Claim
1. A prosthetic valve assembly comprising:
- an implantable prosthetic cardiac valve configured to permit blood flow in a first direction and to inhibit blood flow in a second direction opposite to the first direction; and
a radially expandable annular support comprising a first inflatable peripheral chamber and a second inflatable peripheral chamber, wherein the first and second inflatable peripheral chambers are each configured to bear against a wall of a native body lumen when in an inflated state, and wherein the annular support has a central lumen for permitting blood flow therethrough when the annular support is in an expanded position,wherein the valve is mounted on the annular support, and wherein the valve assembly is configured to delivered by catheterization.
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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
19 Claims
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1. A prosthetic valve assembly comprising:
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an implantable prosthetic cardiac valve configured to permit blood flow in a first direction and to inhibit blood flow in a second direction opposite to the first direction; and a radially expandable annular support comprising a first inflatable peripheral chamber and a second inflatable peripheral chamber, wherein the first and second inflatable peripheral chambers are each configured to bear against a wall of a native body lumen when in an inflated state, and wherein the annular support has a central lumen for permitting blood flow therethrough when the annular support is in an expanded position, wherein the valve is mounted on the annular support, and wherein the valve assembly is configured to delivered by catheterization. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A prosthetic valve assembly comprising:
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a prosthetic cardiac valve configured to replace the function of a natural cardiac valve; and a radially expandable tubular support having a distal inflatable chamber and a proximal inflatable chamber connected thereto, wherein the distal inflatable chamber is configured to bear against a wall of an aorta in an inflated state, and wherein the proximal inflatable chamber is configured to bear against a wall of a ventricle in an inflated state, wherein the prosthetic cardiac valve is mounted on the tubular support, and wherein the valve assembly is configured to delivered by catheterization. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification