US 2019/0053901 A1 · SYSTEM AND METHOD OF STEPPED DEPLOYMENT OF PROSTHETIC HEART VALVE

Abstract

A system for replacing a heart valve of a patient. The system includes a delivery device and a prosthetic heart valve. The system is configured to be transitionable between a loaded state, a partially deployed state and a deployed state. In the loaded state, the prosthetic heart valve engages a coupling structure and is compressively retained within a primary capsule, which constrains the prosthetic heart valve in a compressed arrangement. In the partially deployed state, the prosthetic heart valve engages the coupling structure and is compressively retained within a secondary capsule, which constrains the prosthetic heart valve to a partially deployed arrangement. The partially deployed arrangement is less compressed than the compressed arrangement and less expanded than a deployed arrangement. In the deployed state, the primary and secondary capsules are retracted from over the prosthetic heart valve, which expands to the deployed arrangement and is released from the coupling structure.

Claims18

Dependent claims

A system for replacing a heart valve of a patient, the system comprising:

a delivery device comprising:
a first tube assembly including an intermediate portion providing a coupling structure,
a second tube assembly positioned over the first tube assembly;
a primary capsule including a proximal portion and a distal portion, the proximal portion connected to the second tube assembly and slidably disposed over the first tube assembly, the proximal portion axially movable with respect to the distal portion along the first tube assembly;
and
a secondary capsule slidably disposed over the inner shaft assembly and within both the proximal portion and distal portions of the primary capsule.

3 more elements

A method of deploying a stented prosthetic heart valve at an implantation site of a patient, the method comprising:

receiving a system in a loaded state, the system including a delivery device loaded with a prosthetic heart valve, the prosthetic heart valve having a stent frame to which a valve structure is attached, the delivery device including a first tube assembly, a primary capsule and a secondary capsule, wherein the primary capsule includes a proximal portion and a distal portion that are axially moveable with respect to each other and the secondary capsule is positioned within the primary capsule, the loaded state including the prosthetic heart valve coupled to the first tube assembly and an entirety of the prosthetic heart valve being compressively retained within both the proximal and distal portions to a compressed state that is less than an expanded state;
wherein the secondary capsule positioned between the primary capsule and the prosthetic heart valve;
delivering the prosthetic heart valve to a location proximate the implantation site though a bodily lumen of the patient with the system in the loaded state;
transitioning the system to a partially deployed state, including the prosthetic heart valve coupled to the first tube assembly and compressively retained within the secondary capsule in the partially deployed state that is greater than the compressed state and less than the expanded state, the partially deployed state including the primary capsule at least partially retracted from over the prosthetic heart valve;
arranging the prosthetic heart valve within the implantation site with the system in the partially deployed state;
and
transitioning the system to the expanded state in which the secondary capsule is retracted from over the prosthetic heart valve and the prosthetic heart valve releases from the delivery device.

4 more elements

Dependencies are inferred from the claim text.

System and method of stepped deployment of prosthetic heart valve

Life of this patent

System and method of stepped deployment of prosthetic heart valve

Life of this patent

Abstract

Claims18