Kit enabling a prosthetic valve to be placed in a body enabling a prosthetic valve to be put into place in a duct in the body
First Claim
1. A prosthetic valve assembly comprising:
- an implantable prosthetic valve;
a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of the native body lumen in a manner so as to resist migration; and
means for mounting the valve on the stent such that, when expanded, the valve is positioned outside of the zone;
wherein the mounting means is configured such that the valve is axially movable with respect to the stent between a position of non-implantation outside the first zone to be expanded, and a position of implantation, which it can reach after expansion of the stent, in which it is immobilized axially with respect to the stent; and
wherein the mounting means comprises at least one band integrated in the peripheral wall of the valve and having a shape memory, so that it keeps the valve pressed against the stent in the position of implantation of this valve.
4 Assignments
0 Petitions
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
99 Claims
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1. A prosthetic valve assembly comprising:
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an implantable prosthetic valve; a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of the native body lumen in a manner so as to resist migration; and means for mounting the valve on the stent such that, when expanded, the valve is positioned outside of the zone; wherein the mounting means is configured such that the valve is axially movable with respect to the stent between a position of non-implantation outside the first zone to be expanded, and a position of implantation, which it can reach after expansion of the stent, in which it is immobilized axially with respect to the stent; and wherein the mounting means comprises at least one band integrated in the peripheral wall of the valve and having a shape memory, so that it keeps the valve pressed against the stent in the position of implantation of this valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A prosthetic valve assembly comprising:
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an implantable prosthetic valve; a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of the native body lumen in a manner so as to resist migration; and means for mounting the valve on the stent such that, when expanded, the valve is positioned outside of the zone; wherein the stent comprises a middle portion having a smaller diameter than at end portions thereof, the valve having a shape corresponding to that zone of the stent in whose area it is intended to be mounted; and wherein the middle portion forms two inverted truncated cones. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A prosthetic valve assembly comprising:
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an implantable prosthetic valve; a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of the native body lumen in a manner so as to resist migration; and means for mounting the valve on the stent such that, when expanded, the valve is positioned outside of the zone; wherein the stent comprises a middle portion having a smaller diameter than at end portions thereof, the valve having a shape corresponding to that zone of the stent in whose area it is intended to be mounted; and wherein the middle portion forms an hourglass shape. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A prosthetic valve assembly comprising:
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an implantable prosthetic valve; a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of the native body lumen in a manner so as to resist migration; a sheath that comprises an impermeable biocompatible material and at least partially covers the stent; and means for mounting the valve on the stent such that, when expanded, the valve is positioned outside of the zone. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85)
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86. A prosthetic valve assembly comprising:
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an implantable prosthetic valve; a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of the native body lumen in a manner so as to resist migration; means for mounting the valve on the stent such that, when expanded, the valve is positioned outside of the zone; and retractable hooks on the stent to minimize migration. - View Dependent Claims (87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99)
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Specification