Device for the implantation and fixation of prosthetic valves
First Claim
1. A method of treating a native aortic valve, the method comprising:
- positioning an expandable outer stent component adjacent the native aortic valve, the outer stent component including exactly three struts each having an apex pointing in a proximal direction towards a native heart;
expanding the exactly three struts of the outer stent component;
after expanding the exactly three struts, positioning each strut between a wall of an aorta and one of three respective portions of the native aortic valve, wherein the exactly three struts align the outer stent component with the native aortic valve in an axial direction;
positioning an expandable inner stent component radially inward of the portions of the native aortic valve and of the outer stent component, wherein the inner stent component includes a prosthetic heart valve; and
expanding the inner stent component to press the portions of the native aortic valve radially outward toward the outer stent component, such that the portions of the native aortic valve are positioned between the outer stent component and the inner stent component.
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Accused Products
Abstract
A device for the transvascular implantation and fixation of prosthetic heart valves having a self-expanding heart valve stent (10) with a prosthetic heart valve (11) at its proximal end is introducible into a patient'"'"'s main artery. With the objective of optimizing such a device to the extent that the prosthetic heart valve (11) can be implanted into a patient in a minimally-invasive procedure, to ensure optimal positioning accuracy of the prosthesis (11) in the patient'"'"'s ventricle, the device includes a self-expanding positioning stent (20) introducible into an aortic valve positioned within a patient. The positioning stent is configured separately from the heart valve stent (10) so that the two stents respectively interact in their expanded states such that the heart valve stent (10) is held by the positioning stent (20) in a position in the patient'"'"'s aorta relative the heart valve predefinable by the positioning stent (20).
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Citations
20 Claims
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1. A method of treating a native aortic valve, the method comprising:
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positioning an expandable outer stent component adjacent the native aortic valve, the outer stent component including exactly three struts each having an apex pointing in a proximal direction towards a native heart; expanding the exactly three struts of the outer stent component; after expanding the exactly three struts, positioning each strut between a wall of an aorta and one of three respective portions of the native aortic valve, wherein the exactly three struts align the outer stent component with the native aortic valve in an axial direction; positioning an expandable inner stent component radially inward of the portions of the native aortic valve and of the outer stent component, wherein the inner stent component includes a prosthetic heart valve; and expanding the inner stent component to press the portions of the native aortic valve radially outward toward the outer stent component, such that the portions of the native aortic valve are positioned between the outer stent component and the inner stent component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of treating a native aortic valve, the method comprising:
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introducing a self-expandable outer stent component in a collapsed configuration into an aorta, a proximal-most end of the outer stent component including exactly three struts; positioning the exactly three struts into pockets of the native aortic valve defined by a wall of an aorta and portions of the native aortic valve, wherein the exactly three struts align the outer stent component with the native aortic valve in an axial direction and a radial direction; positioning a self-expandable inner stent component radially inward of the portions of the native aortic valve and of the outer stent component, wherein the inner stent component includes a prosthetic heart valve; and pressing the portions of the native aortic valve radially outward toward the outer stent component. - View Dependent Claims (18, 19)
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20. A method of treating a native aortic valve, the method comprising:
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expanding a balloon to push portions of the native aortic valve radially outwards; introducing a self-expandable outer stent component in a collapsed configuration into an aorta, a proximal-most end of the outer stent component including exactly three struts equidistant from one another; positioning each strut of the exactly three struts into a respective pocket of the native aortic valve between a wall of the aorta and a portion of the native aortic valve, wherein the exactly three struts align the outer stent component with the native aortic valve in an axial direction and a radial direction; positioning a self-expandable inner stent component radially inward of the portions of the native aortic valve, wherein the inner stent component includes a prosthetic heart valve; and pressing the portions of the native aortic valve radially outward toward the outer stent component, such that the portion s of the native aortic valve are between the outer stent component and the inner stent component.
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Specification