Catheter system for introducing an expandable stent into the body of a patient
First Claim
1. A method of implanting an endoprosthesis including three positioning arches, three retaining arches, a valve prosthesis directly attached to the three retaining arches, and a plurality of retaining elements, the method comprising:
- positioning the endoprosthesis relative a native heart valve;
manipulating a handle of a catheter to move a first sleeve with respect to a stent holder in a first direction toward the handle to uncover the positioning arches while covering the plurality of retaining elements within the first sleeve, wherein manipulating the handle moves a first tubular member coupled to the first sleeve in the first direction;
positioning the positioning arches within pockets of the native valve;
manipulating the handle to move a second sleeve with respect to the stent holder in a second direction opposite the first direction and away from the handle to uncover the retaining arches, wherein manipulating the handle moves a second tubular member coupled to the second sleeve in the second direction; and
securing a plurality of native leaflets of the native valve within the positioning arches and outside of the retaining arches;
wherein the stent holder is fixed relative to the handle via a holder tube extending proximally from the stent holder, the holder tube having a distal end connected to the holder and a proximal end connected to the handle, and wherein the holder tube is within the first tubular member, andwherein the holder includes a holder support section distal to the holder, and an extension portion has a proximal end connected to the holder and a distal end connected to the holder support section.
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Accused Products
Abstract
This disclosure relates to a catheter system for introducing a heart valve stent into the body of a patient. The catheter system includes a catheter tip having a seat portion for accommodating the stent in its collapsed state and a stent holder for releasably fixing the stent, wherein the seat portion is constituted by a first sleeve and a second sleeve, said sleeves being moveable relative to each other and relative to the stent holder, and a catheter shaft for connecting the catheter tip to a handle.
340 Citations
20 Claims
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1. A method of implanting an endoprosthesis including three positioning arches, three retaining arches, a valve prosthesis directly attached to the three retaining arches, and a plurality of retaining elements, the method comprising:
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positioning the endoprosthesis relative a native heart valve; manipulating a handle of a catheter to move a first sleeve with respect to a stent holder in a first direction toward the handle to uncover the positioning arches while covering the plurality of retaining elements within the first sleeve, wherein manipulating the handle moves a first tubular member coupled to the first sleeve in the first direction; positioning the positioning arches within pockets of the native valve; manipulating the handle to move a second sleeve with respect to the stent holder in a second direction opposite the first direction and away from the handle to uncover the retaining arches, wherein manipulating the handle moves a second tubular member coupled to the second sleeve in the second direction; and securing a plurality of native leaflets of the native valve within the positioning arches and outside of the retaining arches; wherein the stent holder is fixed relative to the handle via a holder tube extending proximally from the stent holder, the holder tube having a distal end connected to the holder and a proximal end connected to the handle, and wherein the holder tube is within the first tubular member, and wherein the holder includes a holder support section distal to the holder, and an extension portion has a proximal end connected to the holder and a distal end connected to the holder support section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of implanting an endoprosthesis including a plurality of positioning arches, a plurality of retaining arches, a valve prosthesis directly attached to each of the retaining arches, and a plurality of retaining elements, the method comprising:
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positioning the endoprosthesis relative a native valve; manipulating a handle of a catheter to move a first sleeve relative to a stent holder in a first direction to uncover the positioning arches while covering the plurality of retaining elements, wherein the first sleeve at least partially surrounds the stent holder; positioning the positioning arches within pockets of the native valve; manipulating the handle to move a second sleeve in a second direction opposite the first direction to uncover the retaining arches to allow the retaining arches and the valve prosthesis to expand, wherein each of the retaining arches includes an apex axially aligned with an apex of a corresponding positioning arch; securing a plurality of leaflets of the native valve within the positioning arches and outside of the retaining arches; and manipulating the handle to further move the first sleeve to uncover the plurality of retaining elements; wherein the stent holder is fixed relative to the handle via a holder tube extending proximally from the stent holder, the holder tube having a distal end connected to the holder and a proximal end connected to the handle, and wherein the holder tube is within the first tubular member, and wherein the holder includes a holder support section distal to the holder, and an extension portion has a proximal end connected to the holder and a distal end connected to the holder support section. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of implanting an endoprosthesis including exactly three positioning arches, exactly three retaining arches, a valve prosthesis directly attached to each of the exactly three retaining arches, and a plurality of retaining elements, the method comprising:
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positioning the endoprosthesis relative a native heart valve; rotating a handle of a catheter about a first tubular member to move a first sleeve with respect to a stent holder in a first direction toward the handle to uncover the positioning arches while covering the plurality of retaining elements within the first sleeve, wherein the first tubular member is coupled to the first sleeve; positioning the positioning arches within pockets of the native valve; actuating the handle to move a second sleeve with respect to the stent holder in a second direction, opposite the first direction, and away from the handle to uncover the retaining arches, wherein manipulating the handle includes moving a second tubular member coupled to the second sleeve in the second direction; and securing a plurality of native leaflets of the native valve within the positioning arches and outside of the retaining arches; wherein the stent holder is fixed relative to the handle via a holder tube extending proximally from the stent holder, the holder tube having a distal end connected to the holder and a proximal end connected to the handle, and wherein the holder tube is within the first tubular member, and wherein the holder includes a holder support section distal to the holder, and an extension portion has a proximal end connected to the holder and a distal end connected to the holder support section. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification