Methods and apparatuses for deploying minimally-invasive heart valves
First Claim
Patent Images
1. A method for deploying a prosthetic valve in a patient'"'"'s native aortic valve, the method comprising:
- percutaneously advancing through a patient'"'"'s vasculature a distal end portion of an elongate delivery system, a prosthetic valve in a contracted configuration disposed on the distal end portion, the prosthetic valve comprising a radially contractible and expandable tubular stent made from a nickel-titanium alloy and a plurality of leaflets secured to the stent, the plurality of leaflets made from bovine pericardium, the stent coupled to a deployment mechanism disposed on the distal end portion, the deployment mechanism comprising a longitudinally extending shaft and proximal and distal retaining components coupled to proximal and distal end portions of the stent, the shaft rotatable with respect the proximal and distal retaining components;
positioning the prosthetic valve in an annulus of a native aortic valve;
rotating the shaft of the deployment mechanism in a first direction, thereby expanding the prosthetic valve to a final expanded configuration within the annulus of the native aortic valve; and
actuating lockout features on the prosthetic valve to lock the prosthetic valve in the final expanded configuration.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and systems for delivering and deploying a prosthetic heart valve include a deployment mechanism coupled to the prosthetic heart valve, the deployment mechanism having a longitudinal shaft that when rotated in a first direction, expands the prosthetic heart valve from a contracted state to an expanded state, and optionally, when rotated in a second direction opposite the first direction, re-contracts the prosthetic valve from the expanded state. Embodiments of the deployment mechanism include a pinion gear that engages a gear track on the prosthetic heart valve.
-
Citations
16 Claims
-
1. A method for deploying a prosthetic valve in a patient'"'"'s native aortic valve, the method comprising:
-
percutaneously advancing through a patient'"'"'s vasculature a distal end portion of an elongate delivery system, a prosthetic valve in a contracted configuration disposed on the distal end portion, the prosthetic valve comprising a radially contractible and expandable tubular stent made from a nickel-titanium alloy and a plurality of leaflets secured to the stent, the plurality of leaflets made from bovine pericardium, the stent coupled to a deployment mechanism disposed on the distal end portion, the deployment mechanism comprising a longitudinally extending shaft and proximal and distal retaining components coupled to proximal and distal end portions of the stent, the shaft rotatable with respect the proximal and distal retaining components; positioning the prosthetic valve in an annulus of a native aortic valve; rotating the shaft of the deployment mechanism in a first direction, thereby expanding the prosthetic valve to a final expanded configuration within the annulus of the native aortic valve; and actuating lockout features on the prosthetic valve to lock the prosthetic valve in the final expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for deploying a prosthetic valve in a patient'"'"'s native aortic valve, the method comprising:
-
percutaneously advancing through a patient'"'"'s vasculature a distal end portion of an elongate delivery system, a prosthetic valve in a contracted configuration disposed on the distal end portion, the prosthetic valve comprising a radially contractible and expandable tubular stent and a plurality of leaflets secured to the stent, the stent coupled to a deployment mechanism disposed on the distal end portion, the deployment mechanism comprising a longitudinally extending shaft, the shaft rotatable about a longitudinal axis thereof; positioning the prosthetic valve in an annulus of a native aortic valve; and rotating the shaft of the deployment mechanism in a first direction, thereby expanding the prosthetic valve to a final expanded configuration within the annulus of the native aortic valve, wherein the shaft further comprises a set of gear teeth and the stent comprises a gear track positioned to engage the gear teeth.
-
-
8. A method for deploying a prosthetic valve in a patient'"'"'s native aortic valve, the method comprising:
-
percutaneously advancing through a patient'"'"'s vasculature a distal end of an elongate delivery system, a prosthetic valve in a contracted configuration disposed on the distal end portion, the prosthetic valve comprising a radically contractible and expandable tubular stent and a plurality of leaflets secured to the stent, the stent coupled to a deployment mechanism disposed on the distal end portion, the deployment mechanism comprising a longitudinally extending shaft, the shaft rotatable about a longitudinal axis thereof; positioning the prosthetic valve in an annulus of a native aortic valve; and rotating the shaft of the deployment mechanism in a first direction, thereby expanding the prosthetic valve to a final expanded configuration within the annulus of the native aortic valve, wherein the shaft comprises a distal set of gear teeth and a proximal set of gear teeth, and the stent comprises a distal gear track and a proximal gear track, the distal set of gear teeth positioned to engage the distal gear track and the proximal set of gear teeth positioned to engage the proximal gear track.
-
-
9. A method for deploying a prosthetic valve in a patient'"'"'s native aortic valve, the method comprising:
-
advancing a prosthetic valve through a patient'"'"'s vasculature, the prosthetic valve comprising a radially contractible and expandable tubular stent body made from a nickel-titanium alloy and a plurality of leaflets made from bovine pericardium, the prosthetic valve coupled to a deployment mechanism positioned along a distal end portion of an elongate delivery system, the deployment mechanism comprising a plurality of retaining mechanisms and a rotatable shaft, the shaft being rotatable with respect to the retaining mechanisms; positioning the prosthetic valve adjacent an annulus of a native aortic valve; rotating the shaft relative to the retaining mechanisms for causing the prosthetic valve to expand in the annulus of the native aortic valve; and locking the prosthetic valve in a final expanded configuration; wherein the retaining mechanisms remain circumferentially fixed with respect to at least a portion of the stent body while the shaft is rotated to provide regulated expansion of the prosthetic valve in the annulus of the native aortic valve. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification