Methods of implanting an endoprosthesis
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Accused Products
Abstract
A catheter is disclosed for the transvascular implantation of prosthetic heart valves, e.g., including self-expanding anchorage supports, to reduce the risk to the patient during the implantation. Accordingly, a prosthetic heart valve comprising anchorage supports is temporarily housed in a folded form in a cartridge-type unit during the implantation. The cartridge-type unit can be fixed on the proximal end of a guide system, which comprises a flexible region that can be guided through the aorta. Actuating elements run through the interior of the hollow guide system, permitting sections of the cartridge-type unit to be displaced radially about their longitudinal axis and/or laterally in a proximal direction, thus allowing individual sections of the anchorage support and the associated prosthetic heart valve to be sequentially released.
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Citations
36 Claims
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1-16. -16. (canceled)
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17. A method of implanting an endoprosthesis with a catheter system, the method comprising:
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positioning the endoprosthesis relative to a native heart valve, wherein the endoprosthesis is in a collapsed form; expanding a plurality of first elements of the endoprosthesis while maintaining a plurality of second elements in the collapsed form, the plurality of second elements having a shape complementary to a plurality of anchoring elements of the catheter system to anchor the endoprosthesis to the catheter system; engaging the plurality of first elements with a plurality of native leaflets of the native heart valve; and expanding the plurality of second elements to release the endoprosthesis from the catheter system such that the endoprosthesis is in an expanded form. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of implanting an endoprosthesis with a catheter system, the method comprising:
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positioning a cartridge unit relative to a native heart valve, the cartridge unit at least partially enclosing an endoprosthesis in a collapsed form, wherein the cartridge unit includes a first sleeve-shaped element and a second sleeve-shaped element, at least a portion of the second sleeve-shaped element being radially inward of the first sleeve-shaped element; moving the first sleeve-shaped element to allow a plurality of first elements of the endoprosthesis to expand while maintaining a plurality of second elements of the endoprosthesis housed within the second sleeve-shaped element, wherein the plurality of second elements are engaged with a plurality of anchoring elements of the unit to anchor the endoprosthesis to the catheter system; positioning the plurality of first elements adjacent a plurality of native leaflets of the native heart valve; engaging the plurality of first elements with the plurality of native leaflets; and moving the second sleeve-shaped element to allow a plurality of second elements of the endoprosthesis to expand and release the endoprosthesis from the catheter system. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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33. A method of implanting an endoprosthesis with a catheter system, the method comprising:
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positioning the endoprosthesis in a collapsed form relative to a native heart valve; partially expanding the endoprothesis to release a plurality of first elements while maintaining a plurality of second elements in the collapsed form, the plurality of second elements having a shape complementary to a plurality of anchoring elements of the catheter system to anchor the endoprosthesis to the catheter system; engaging the plurality of first elements with at least a portion of the native heart valve; and determining a position of the endoprosthesis via tactile feedback. - View Dependent Claims (34, 35, 36)
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Specification