Device for the implantation and fixation of prosthetic valves

摘要

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 stunt 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).

主权项

1. A method of treating a native aortic valve, the method comprising:
positioning an expandable first stent adjacent the native aortic valve, a proximal-most end of the first stent including a plurality of struts, wherein a proximal end of the first stent is closer to a native heart than a distal end of the first stent; expanding the plurality of struts of the first stent; after expanding the plurality of struts, positioning the plurality of struts between a wall of an aorta and portions of the native aortic valve, wherein the plurality of struts align the first stent with the native aortic valve in an axial direction; positioning an expandable second stent radially inward of the portions of the native aortic valve and of the first stent, wherein the second stent includes a prosthetic heart valve; and expanding the second stent to press the portions of the native aortic valve radially outward toward the first stent, such that the portions of the native aortic valve are positioned between the first stent and the second stent.