Catheter for the Transvascular Implantation of Prosthetic Heart Valves
First Claim
1. Catheter for the transvascular implantation of heart valve prosthesis with a support element, comprising:
- a cartridge unit configured to hold the support element in a collapsed state; and
operating elements disposed within a hollow guide system and extending to the cartridge unit, the operating elements configured to affect movement of the cartridge unit rotatably about its longitudinal axis to affect movement of the support element rotatably and axially along its longitudinal axis in at least one of the proximal and distal directions to affect a sequential release of a hoop element of the support element for introduction into a pocket of a heart valve followed by a release of a remainder of the support element to clamp at least a portion of the heart valve between the hoop element and the remainder of the support element.
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Accused Products
Abstract
The invention relates to a catheter for the transvascular implantation of prosthetic heart valves, in particular comprising self-expanding anchorage supports (10), which allow a minimally invasive implantation of prosthetic heart valves. The aim of the invention is to reduce the risk to the patient during the implantation. To achieve this, according to the invention a prosthetic heart valve comprising anchorage supports is temporarily housed in a folded form in a cartridge-type unit (4) during the implantation. The cartridge-type unit can be fixed on the proximal end of a guide system (1), which comprises a flexible region (9) that can be guided through the aorta. Actuating elements (2, 3) run through the interior of the hollow guide system, said elements 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
82 Claims
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1. Catheter for the transvascular implantation of heart valve prosthesis with a support element, comprising:
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a cartridge unit configured to hold the support element in a collapsed state; and operating elements disposed within a hollow guide system and extending to the cartridge unit, the operating elements configured to affect movement of the cartridge unit rotatably about its longitudinal axis to affect movement of the support element rotatably and axially along its longitudinal axis in at least one of the proximal and distal directions to affect a sequential release of a hoop element of the support element for introduction into a pocket of a heart valve followed by a release of a remainder of the support element to clamp at least a portion of the heart valve between the hoop element and the remainder of the support element. - View Dependent Claims (2, 3, 6, 7, 8, 9, 17, 18, 19)
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4-5. -5. (canceled)
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10-16. -16. (canceled)
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20. A catheter for implanting a heart valve prosthesis connected to a support element including at least one support hoop, comprising:
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a first manipulating element; a second manipulating element configured to at least partially surround the first manipulating element; and a third manipulating element configured to at least partially surround the second manipulating element; wherein relative axial movement between the first, second, and third manipulating elements is configured to permit sequential expansion of the support element from a collapsed form to an expanded form. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A catheter for implanting a support element having at least one support hoop, comprising:
a cartridge unit disposed between proximal and distal ends of the catheter configured to; affect expansion of the at least one support hoop via movement of a first element in the distal direction, the expanded at least one support hoop configured to be introduced into a pocket of a native heart valve; affect expansion of a first portion of the remainder of the support element via movement of a second element in the proximal direction and maintain a second portion of the remainder of the support element in a collapsed form via the first element; and affect contraction of the expanded at least one support hoop and the expanded first portion of the remainder of the support element via movement of the first element in the proximal direction. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A catheter for implanting a heart valve prosthesis attached to a support structure having a body portion and at least one hoop element, the catheter comprising:
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a first element configured to selectively maintain the at least one hoop element in a collapsed form by at least partially surrounding the hoop element; a second element configured to selectively maintain the body portion in a collapsed form by at least partially surrounding the body portion; and a third element configured to selectively engage the body portion; wherein axial movement of the first element in a distal direction relative to the second element permits the at least one hoop element to self-expand, and axial movement of the second element in a proximal direction relative to the first element permits at least a portion of the body portion to self-expand. - View Dependent Claims (34, 35)
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36. A catheter for implanting a support element supporting a valve prosthesis, comprising:
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a first element configured to selectively maintain a first portion of the support element in a collapsed form by at least partially surrounding the support element; and a second element configured to selectively maintain a second portion of the support element in a collapsed form by at least partially surrounding the support element; wherein the first element is configured to selectively release the first portion to self-expand by movement of the first element in a first direction relative to the second element, and the second element is configured to selectively release the second portion to self-expand by movement of the second element in a second direction relative to the first element, substantially opposite the first direction.
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37. A method of implanting a support element having a valve prosthesis connected thereto and including at least one support hoop, comprising:
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positioning the support element in a collapsed form relative to a native heart valve; expanding the at least one support hoop from a collapsed form to an expanded form while maintaining the remainder of the support element in the collapsed form; positioning the at least one expanded support hoop into a pocket of the native heart valve; partially expanding the remainder of the support element to at least partially expand the valve prosthesis; and collapsing the partially expanded remainder of the support element into the collapsed form. - View Dependent Claims (38)
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39. A method of implanting a support element having a valve prosthesis connected thereto and including at least one support hoop, comprising:
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positioning the support element in a collapsed form relative to a native heart valve; expanding the at least one support hoop from a collapsed form to an expanded form while maintaining the remainder of the support element in the collapsed form; positioning the at least one expanded support hoop into a pocket of the native heart valve; partially expanding the remainder of the support element to at least partially expand the valve prosthesis; and checking the function of the valve prosthesis after the step of partially expanding the remainder of the support element. - View Dependent Claims (40, 41, 42)
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43. A system for treating a heart valve, comprising:
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a support element including a body portion configured to support a heart valve prosthesis and at least one hoop element connected to the body portion; and a catheter for positioning the support element relative to a native heart valve configured to; expand the at least one hoop element and position the expanded at least one hoop element into a pocket of the native heart valve, sequentially expand a first portion of the body portion and maintain a second portion of the body portion in a collapsed form to check the functioning of the heart valve prosthesis, and sequentially expand a second portion of the body portion to clamp at least a portion of the native heart valve between the at least one hoop element and the body portion.
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44. A catheter for transvascular implantation of a heart valve prosthesis with a self-expanding anchoring support, the catheter comprising:
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(a) a cartridge unit for carrying the anchoring support and prosthesis and having a flexible tip at its proximal end; (b) a hollow guide system releasably connected to the cartridge unit at the proximal end of the hollow guide system; and (c) a manipulating part attached to the distal end of the hollow guide system wherein operating elements are attached at one end to the manipulating part and at the other end to the cartridge unit, the hollow guide system has a bendable region at its proximal end adjacent to the cartridge unit, the hollow guide system is configured to contain a circulating coolant or pharmaceutical preparation; and
the guide system is substantially liquid proof. - View Dependent Claims (45, 46, 47, 48, 49, 50)
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51. A replacement valve for use within a human body comprising:
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a valve component; a stent component comprising a first section, a second section for housing the valve component, and a third section, wherein the third section comprises at least one attachment element configured for removable attachment to a delivery device. - View Dependent Claims (52, 53, 54, 55, 56, 57)
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59. A cardiac stent-valve delivery system comprising:
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a first assembly comprising an outer sheath and a guide wire tubing; and a second assembly comprising a stent holder configured for removable attachment to at least one attachment element of a stent-valve, the stent-valve positioned over the guide wire tubing of the first assembly, wherein the first assembly and the second assembly are configured for relative movement with respect to one another in order to transition from a closed position to an open position, such that in the closed position the outer sheath encompasses the stent-valve still attached to the stent holder and thus constrains expansion of the stent-valve, and such that in the open position the outer sheath does not constrain expansion of the stent-valve and thus the stent-valve detaches from the stent holder and expands to a fully expanded configuration. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75)
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76. A method for delivering a cardiac stent-valve to an implantation site comprising:
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removably attaching the stent-valve to a delivery device; delivering the stent-valve to the implantation site in a collapsed configuration; partially proximally expanding the stent-valve while maintaining the stent-valve attached to the delivery device; and making a determination with respect to the stent-valve when the stent-valve is in the partially-expanded configuration. - View Dependent Claims (77, 78, 79, 80, 81, 82)
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Specification