Transcatheter Prosthetic Heart Valve Delivery Device With Passive Trigger Release
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 terminating at a distal end and defining a lumen;
an inner shaft assembly slidably disposed within the lumen and including an engagement structure configured to selectively engage a prosthetic heart valve; and
a release assembly disposed between the delivery sheath and the inner shaft assembly, the release assembly defining a central axis and including;
a base coupled to the inner shaft assembly proximal the engagement structure,a retraction member distal the base and configured to self-retract in longitudinal length from an extended condition to a relaxed, retracted condition,a release member distal the retraction member and configured to self-expand in radial projection relative to the central axis from a compressed condition to a normal, expanded condition,a retention member distal the release member;
wherein the device is configured to provide;
a delivery state in which the distal end is distal the retention member, the release member is in the compressed condition, and the retraction member is in the extended condition,a deployment state in which the distal end is proximal the release member, the release member is in the normal, expanded condition, and the retraction member is in the relaxed, retracted condition.
1 Assignment
0 Petitions
Accused Products
Abstract
A delivery device for percutaneously deploying a prosthetic valve includes a sheath, an inner shaft, and a release assembly. The release assembly is disposed between the sheath and the inner shaft, and includes a retraction member, a release member, and a retention member. The retraction member can self-retract in length from an extended condition to a retracted condition. The release member can self-expand from a compressed condition to an expanded condition. The retention member is distal the release member. In a delivery state, the sheath end is distal the retention member, the release member is in the compressed condition and the retraction member in the extended condition to retain the prosthesis. In a deployment state, the sheath end is positioned to permit the release member to self-transition to the expanded condition, allowing the retraction member to self-transition to the retracted condition and release the prosthesis.
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Citations
29 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 terminating at a distal end and defining a lumen; an inner shaft assembly slidably disposed within the lumen and including an engagement structure configured to selectively engage a prosthetic heart valve; and a release assembly disposed between the delivery sheath and the inner shaft assembly, the release assembly defining a central axis and including; a base coupled to the inner shaft assembly proximal the engagement structure, a retraction member distal the base and configured to self-retract in longitudinal length from an extended condition to a relaxed, retracted condition, a release member distal the retraction member and configured to self-expand in radial projection relative to the central axis from a compressed condition to a normal, expanded condition, a retention member distal the release member; wherein the device is configured to provide; a delivery state in which the distal end is distal the retention member, the release member is in the compressed condition, and the retraction member is in the extended condition, a deployment state in which the distal end is proximal the release member, the release member is in the normal, expanded condition, and the retraction member is in the relaxed, retracted condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for restoring 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, the stent frame defining a distal region and a proximal region, the proximal region forming at least one post; and a delivery device comprising; a delivery sheath terminating at a distal end and defining a lumen, an inner shaft assembly slidably disposed within the lumen and including an engagement structure, a release assembly for selectively coupling the prosthetic heart valve relative to the inner shaft assembly, the release assembly defining a central axis and including; a base coupled to the inner shaft assembly proximal the engagement structure, a retraction member distal the base and configured to self-retract in longitudinal length from an extended condition to a relaxed, retracted condition, a release member distal the retraction member and configured to self-expand in radial projection relative to the central axis from a compressed condition to a normal, expanded condition, a retention member distal the release member; wherein the system is configured to provide a loaded mode in which the prosthetic heart valve is retained within the delivery sheath and to the inner shaft assembly, including the at least one post slidably captured to the engagement structure by the retention member, with the retraction member in the extended condition and the release member in the compressed condition. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for percutaneously deploying a stented prosthetic heart valve to an implantation site of a patient, the method comprising:
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receiving a delivery device loaded with a radially expandable prosthetic heart valve having a stent frame to which a valve structure is attached, the delivery device including a delivery sheath, an inner shaft assembly, and a release assembly, the delivery sheath and the release assembly containing the prosthetic heart valve in a compressed arrangement over the inner shaft assembly in a delivery state of the delivery device, and the release assembly including; a base coupled to the inner shaft assembly, a retraction member extending distal the base and forced to an extended condition, a release member distal the retraction member and forced to a compressed arrangement in which the release member engages the inner shaft assembly, a retention member distal the release member and disposed over a portion of the prosthetic heart valve; delivering the prosthetic heart valve in the compressed arrangement through a bodily lumen of the patient and to the implantation site via the delivery device in the delivery state; proximally retracting the delivery sheath from the prosthetic heart valve and the release member; and permitting the prosthetic heart valve to release from the delivery device including the release member self-transitioning to a normal, expanded condition and the retention member self-retracting to a normal, retracted condition to proximally withdraw the retention member from over the prosthetic heart valve. - View Dependent Claims (28, 29)
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Specification