Transcatheter prosthetic heart valve delivery system and method with controlled expansion of prosthetic heart valve
First Claim
1. A delivery system for use with a prosthetic heart valve having a stent frame to which a valve structure is attached, the system comprising:
- a prosthetic heart valve including a proximal end and a distal end;
a shaft assembly including a distal end, an intermediate portion, and a first coupling structure disposed near the distal end and configured to be coupled to only a distal end of the prosthetic heart valve via a first tether attached to the distal end of the prosthetic heart valve;
a sheath assembly defining a lumen sized to slidably receive the shaft assembly; and
wherein the delivery system is configured to transition from a loaded state in which the sheath assembly encompasses the prosthetic heart valve to a deployed state in which the sheath assembly is withdrawn from the prosthetic heart valve, and wherein the first coupling structure is configured to be manipulated in a first direction to provide a controlled expansion or contraction of the distal end of the prosthetic heart valve.
1 Assignment
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Accused Products
Abstract
A delivery system for use with a prosthetic heart valve having a stent frame to which a valve structure is attached includes a shaft assembly including a distal end, an intermediate portion, and a first coupling structure disposed near the distal end and configured to be coupled to a distal end of the prosthetic heart valve via a first tether. A sheath assembly defines a lumen sized to slidably receive the shaft assembly. The delivery system is configured to transition from a loaded state in which the sheath assembly encompasses the prosthetic heart valve to a deployed state in which the sheath assembly is withdrawn from the prosthetic heart valve. The first coupling structure is configured to be manipulated in a first direction to provide a controlled expansion or contraction of the distal end of the prosthetic heart valve.
131 Citations
22 Claims
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1. A delivery system for use with a prosthetic heart valve having a stent frame to which a valve structure is attached, the system comprising:
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a prosthetic heart valve including a proximal end and a distal end; a shaft assembly including a distal end, an intermediate portion, and a first coupling structure disposed near the distal end and configured to be coupled to only a distal end of the prosthetic heart valve via a first tether attached to the distal end of the prosthetic heart valve; a sheath assembly defining a lumen sized to slidably receive the shaft assembly; and wherein the delivery system is configured to transition from a loaded state in which the sheath assembly encompasses the prosthetic heart valve to a deployed state in which the sheath assembly is withdrawn from the prosthetic heart valve, and wherein the first coupling structure is configured to be manipulated in a first direction to provide a controlled expansion or contraction of the distal end of the prosthetic heart valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19)
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13. The delivery system of 1, wherein the first tether is configured to be released from the first coupling structure by rotation of the first coupling structure.
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20. A system for performing a therapeutic procedure on a defective heart valve of a patient, the system comprising:
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a prosthetic heart valve having a stent frame and a valve structure attached to the stent frame and forming at least two valve leaflets, the prosthetic heart valve being self-expandable from a compressed arrangement to a natural arrangement; a shaft assembly including a distal end and a first coupling structure disposed near the distal end and configured to be coupled to only a distal end of the prosthetic heart valve via a first tether attached to the distal end of the prosthetic heart valve; and a sheath assembly defining a lumen sized to slidably receive the shaft assembly; and wherein the delivery system is configured to slidably receive the prosthetic heart valve within the sheath assembly and is configured to be operable to transition from a loaded state in which the sheath assembly encompasses the prosthetic heart valve to a deployed state in which the sheath assembly is withdrawn from the prosthetic heart valve to permit the prosthetic heart valve to self-expand to the natural arrangement and release from the delivery system, and wherein the first coupling structure is configured to be rotated in a first direction to provide a controlled expansion of the distal end of the prosthetic heart valve and is configured to be rotated in a second direction to provide a controlled contraction of the distal end of the prosthetic heart valve. - View Dependent Claims (21, 22)
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Specification