Transcatheter prosthetic heart valve delivery device with biased release features
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; and
a capture assembly for selectively coupling a prosthetic heart valve relative to the inner shaft, the capture assembly including;
a spindle attached to the inner shaft, the spindle defining a plurality of circumferentially spaced capture slots,a first biasing member disposed within a first one of the plurality of capture slots and configured to self-transition from a deflected condition to a normal condition, wherein a radial projection of the biasing member relative to a centerline of the inner shaft is greater in the normal condition than in the deflected condition;
wherein the delivery device is configured to provide;
a delivery state in which the delivery sheath assembly is configured to retain a stented prosthetic heart valve over the inner shaft via the first capture slot, including a portion of the prosthetic heart valve engageable within the first capture slot and the first biasing member forced to the deflected condition,a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the first capture slot, including the first biasing member self-transitioning toward the normal condition to exteriorly close at least a portion of the first capture slot.
1 Assignment
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Accused Products
Abstract
A delivery system for percutaneously delivering and deploying a stented prosthetic heart valve. The delivery device includes a delivery sheath slidably disposed over an inner shaft, and a capture assembly. The capture assembly includes a spindle and a biasing member. The spindle is attached to the inner shaft and defines slot. The biasing member is disposed within the slot and self-transitions from a deflected condition to a normal condition. In a delivery state, the delivery sheath retains the prosthesis over the inner shaft and coupled to the spindle via the capture slot, including a portion of the prosthetic valve being engaged within the slot and the biasing member forced to the deflected condition. In a deployment state, the delivery sheath is proximally withdrawn and the biasing member self-transitions toward the normal condition to eject the prosthetic valve from the capture slot.
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Citations
22 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; and a capture assembly for selectively coupling a prosthetic heart valve relative to the inner shaft, the capture assembly including; a spindle attached to the inner shaft, the spindle defining a plurality of circumferentially spaced capture slots, a first biasing member disposed within a first one of the plurality of capture slots and configured to self-transition from a deflected condition to a normal condition, wherein a radial projection of the biasing member relative to a centerline of the inner shaft is greater in the normal condition than in the deflected condition; wherein the delivery device is configured to provide; a delivery state in which the delivery sheath assembly is configured to retain a stented prosthetic heart valve over the inner shaft via the first capture slot, including a portion of the prosthetic heart valve engageable within the first capture slot and the first biasing member forced to the deflected condition, a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the first capture slot, including the first biasing member self-transitioning toward the normal condition to exteriorly close at least a portion of the first capture slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. 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 assembly terminating at a distal end and defining a lumen, an inner shaft slidably disposed within the lumen, a capture assembly for selectively coupling the prosthetic heart valve relative to the inner shaft, the capture assembly including; a spindle attached to the inner shaft, the spindle defining at least one longitudinal capture slot, at least one biasing member disposed within the at least one capture slot and configured to self-transition from a deflected condition to a normal condition, wherein a radial projection of the biasing member relative to a centerline of the inner shaft is greater in the normal condition than in the deflected condition; wherein the system is configured to provide a loaded mode in which the prosthetic heart valve is retained within the delivery sheath assembly and to the inner shaft, including the at least one post slidably captured within the at least one capture slot and forcing the at least one biasing member to the deflected condition, the at least one post disposed between the delivery sheath assembly and the at least one biasing member in the loaded mode. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification