Delivery systems for prosthetic heart valve
First Claim
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1. A method of implanting a prosthetic heart valve within a heart, the method comprising:
- introducing a distal end portion of a delivery device into the native aortic valve of the heart, a distal end portion of the delivery device comprising an inflatable balloon, a proximal stop and a distal stop positioned at least partially within the balloon, and a radially expandable prosthetic heart valve mounted over the balloon and between the proximal stop and the distal stop in a radially compressed state;
inflating the balloon to radially expand the prosthetic heart valve within the native aortic valve, wherein the balloon is inflated with an inflation fluid that flows radially through the proximal and distal stops;
deflating the balloon; and
retracting the delivery device from the heart;
wherein inflating the balloon comprises causing the inflation fluid to flow;
through a first passageway in the proximal stop and into a proximal portion of the balloon;
from the proximal portion of the balloon, through a second passageway in the proximal stop, and into an intermediate portion of the balloon within the prosthetic device; and
from the intermediate portion of the balloon, through a passageway in the distal stop, and into a distal portion of the balloon; and
wherein the passageway in the distal stop comprises a slot in a cone-shaped portion of the distal stop and inflation fluid flows radially through the slot.
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Abstract
Described herein are systems and methods from delivering prosthetic devices, such as prosthetic heart valves, through the body and into the heart for implantation therein. The prosthetic devices delivered with the delivery systems disclosed herein are, for example, radially expandable from a radially compressed state mounted on the delivery system to a radially expanded state for implantation using an inflatable balloon of the delivery system. Exemplary delivery routes through the body and into the heart include transfemoral routes, transapical routes, and transaortic routes, among others.
330 Citations
27 Claims
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1. A method of implanting a prosthetic heart valve within a heart, the method comprising:
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introducing a distal end portion of a delivery device into the native aortic valve of the heart, a distal end portion of the delivery device comprising an inflatable balloon, a proximal stop and a distal stop positioned at least partially within the balloon, and a radially expandable prosthetic heart valve mounted over the balloon and between the proximal stop and the distal stop in a radially compressed state; inflating the balloon to radially expand the prosthetic heart valve within the native aortic valve, wherein the balloon is inflated with an inflation fluid that flows radially through the proximal and distal stops; deflating the balloon; and retracting the delivery device from the heart; wherein inflating the balloon comprises causing the inflation fluid to flow; through a first passageway in the proximal stop and into a proximal portion of the balloon; from the proximal portion of the balloon, through a second passageway in the proximal stop, and into an intermediate portion of the balloon within the prosthetic device; and from the intermediate portion of the balloon, through a passageway in the distal stop, and into a distal portion of the balloon; and wherein the passageway in the distal stop comprises a slot in a cone-shaped portion of the distal stop and inflation fluid flows radially through the slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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positioning a radially compressible prosthetic heart valve around a distal end portion of a delivery device for delivering the prosthetic heart valve into the heart in a compressed state, the distal end portion of the delivery device comprising an inflatable balloon, a proximal stop, and a distal stop, the proximal and distal stops being positioned at least partially within the balloon; crimping the prosthetic heart valve to a radially compressed state onto the distal end portion of a delivery device while simultaneously radially compressing the proximal stop and the distal stop, such that the prosthetic heart valve is positioned over the balloon and between the proximal and distal stops in a radially compressed state further comprising releasing compressive pressure after the crimping such that the proximal and distal stops resiliently expand from about the first outer diameter to about the second outer diameter. - View Dependent Claims (13, 14, 15, 16)
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17. A method comprising:
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positioning a radially compressible prosthetic heart valve around a distal end portion of a delivery device for delivering the prosthetic heart valve into the heart in a compressed state, the distal end portion of the delivery device comprising an inflatable balloon, a proximal stop, and a distal stop, the proximal and distal stops being positioned at least partially within the balloon; crimping the prosthetic heart valve to a radially compressed state onto the distal end portion of a delivery device while simultaneously radially compressing the proximal stop and the distal stop, such that the prosthetic heart valve is positioned over the balloon and between the proximal and distal stops in a radially compressed state; and wherein the proximal stop comprises a cone-shaped portion and at least one slot in the cone-shaped portion that facilitates radial compression of the cone-shaped portion and allows inflation fluid to flow through the proximal stop. - View Dependent Claims (18)
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19. A method comprising:
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positioning a radially compressible prosthetic heart valve around a distal end portion of a delivery device for delivering the prosthetic heart valve into the heart in a compressed state, the distal end portion of the delivery device comprising an inflatable balloon, a proximal stop, and a distal stop, the proximal and distal stops being positioned at least partially within the balloon; crimping the prosthetic heart valve to a radially compressed state onto the distal end portion of a delivery device while simultaneously radially compressing the proximal stop and the distal stop, such that the prosthetic heart valve is positioned over the balloon and between the proximal and distal stops in a radially compressed state; and wherein the distal stop comprises a cone-shaped portion and at least one slot in the cone-shaped portion that facilitates radial compression of the cone-shaped portion and allows inflation fluid to flow through the distal stop. - View Dependent Claims (20)
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21. A method of implanting a prosthetic heart valve within a heart, the method comprising:
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introducing a distal end portion of a delivery device into the native aortic valve of the heart, a distal end portion of the delivery device comprising an inflatable balloon, a proximal stop and a distal stop positioned at least partially within the balloon, and a radially expandable prosthetic heart valve mounted over the balloon and between the proximal stop and the distal stop in a radially compressed state; inflating the balloon to radially expand the prosthetic heart valve within the native aortic valve, wherein the balloon is inflated with an inflation fluid that flows radially through the proximal and distal stops; deflating the balloon; and retracting the delivery device from the heart; wherein inflating the balloon comprises causing the inflation fluid to flow; through a first passageway in the proximal stop and into a proximal portion of the balloon; from the proximal portion of the balloon, through a second passageway in the proximal stop, and into an intermediate portion of the balloon within the prosthetic device; and from the intermediate portion of the balloon, through a passageway in the distal stop, and into a distal portion of the balloon; and wherein during inflation of the balloon, inflation fluid flows radially inwardly through the second passageway in the proximal stop and radially outwardly though the passageway in the distal stop. - View Dependent Claims (22, 23, 24)
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25. A method of implanting a prosthetic heart valve within a heart, the method comprising:
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introducing a distal end portion of a delivery device into the native aortic valve of the heart, a distal end portion of the delivery device comprising an inflatable balloon, a proximal stop and a distal stop positioned at least partially within the balloon, and a radially expandable prosthetic heart valve mounted over the balloon and between the proximal stop and the distal stop in a radially compressed state; inflating the balloon to radially expand the prosthetic heart valve within the native aortic valve, wherein the balloon is inflated with an inflation fluid that flows radially through the proximal and distal stops; deflating the balloon; and retracting the delivery device from the heart; the method further comprising, prior to introducing the delivery device into the heart, crimping the prosthetic heart valve to the radially compressed state onto the delivery device while simultaneously radially compressing the proximal and distal stops; wherein the prosthetic heart valve has a first outer diameter in the radially compressed state and the proximal and distal stops are compressed from a second outer diameter to about the first outer diameter during the crimping; and the method further comprising releasing compressive pressure after the crimping such that the proximal and distal stops resiliently expand from about the first outer diameter to about the second outer diameter. - View Dependent Claims (26, 27)
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Specification