Transcatheter valve delivery systems and methods
First Claim
1. A delivery device for percutaneously deploying a stented prosthetic heart valve including a stent frame to which a valve structure is attached, the device comprising:
- a delivery sheath assembly terminating at a distal end and defining a lumen;
an inner shaft slidably disposed within the lumen;
a hub projecting from the inner shaft and configured to releasably receive a portion of a prosthetic heart valve stent frame; and
a release sheath assembly disposed between the delivery sheath assembly and the inner shaft, the release sheath assembly including a release sheath slidably disposed about the inner shaft;
wherein the delivery device is configured to provide a loaded state in which the delivery sheath assembly maintains a stented prosthetic heart valve over the inner shaft and coupled to the hub via the release sheath, and a deployment state in which the distal end of the delivery sheath assembly and the release sheath are withdrawn from the prosthetic heart valve to permit the prosthetic heart valve to release from the hub;
and further wherein the release sheath assembly is configured to self-retract the release sheath proximally relative to the hub as the distal end of the delivery sheath assembly is proximally retracted relative to the release sheath.
1 Assignment
0 Petitions
Accused Products
Abstract
Delivery devices and methods for percutaneously delivering a prosthetic valve to the heart of a patient. These prosthetic valves may be configured to provide complimentary features that promote optimal placement of the prosthetic valve in a native heart valve, such as the aortic valve, mitral valve, pulmonic valve, and/or tricuspid valve. The delivery device includes a release sheath assembly housed within an outer delivery sheath. A release sheath component of the assembly captures a portion of the prosthetic valve to the delivery device, and effectuates complete release of the prosthetic valve with retraction of the outer sheath.
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Citations
9 Claims
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1. A delivery device for percutaneously deploying a stented prosthetic heart valve including a stent frame to which a valve structure is attached, the device comprising:
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a delivery sheath assembly terminating at a distal end and defining a lumen; an inner shaft slidably disposed within the lumen; a hub projecting from the inner shaft and configured to releasably receive a portion of a prosthetic heart valve stent frame; and a release sheath assembly disposed between the delivery sheath assembly and the inner shaft, the release sheath assembly including a release sheath slidably disposed about the inner shaft; wherein the delivery device is configured to provide a loaded state in which the delivery sheath assembly maintains a stented prosthetic heart valve over the inner shaft and coupled to the hub via the release sheath, and a deployment state in which the distal end of the delivery sheath assembly and the release sheath are withdrawn from the prosthetic heart valve to permit the prosthetic heart valve to release from the hub; and further wherein the release sheath assembly is configured to self-retract the release sheath proximally relative to the hub as the distal end of the delivery sheath assembly is proximally retracted relative to the release sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification