Device and method for treatment of mitral insufficiency
First Claim
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1. A medical apparatus for remodeling a mitral valve annulus adjacent to the coronary sinus, comprising:
- an elongate body having a proximal end region and a distal end region, each of the proximal and distal end regions dimensioned to reside completely within the vascular system, the elongate body being movable from a first configuration for transluminal delivery to at least a portion of the coronary sinus to a second configuration for remodeling the mitral valve annulus proximate the coronary sinus; and
a forming element attached to the elongate body for manipulating the elongate body from the first transluminal configuration to the second remodeling configuration;
wherein the elongate body is configured to press a portion of the coronary sinus against the mitral valve annulus when in the second remodeling configuration.
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Reexamination
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Abstract
A device for treatment of mitral annulus dilatation comprises an elongate body having two states. In a first of these states the elongate body is insertable into the coronary sinus and has a shape adapting to the shape of the coronary sinus. When positioned in the coronary sinus, the elongate body is transferable to the second state assuming a reduced radius of curvature, whereby the radius of curvature of the coronary sinus and the radius of curvature as well as the circumference of the mitral annulus is reduced.
208 Citations
27 Claims
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1. A medical apparatus for remodeling a mitral valve annulus adjacent to the coronary sinus, comprising:
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an elongate body having a proximal end region and a distal end region, each of the proximal and distal end regions dimensioned to reside completely within the vascular system, the elongate body being movable from a first configuration for transluminal delivery to at least a portion of the coronary sinus to a second configuration for remodeling the mitral valve annulus proximate the coronary sinus; and a forming element attached to the elongate body for manipulating the elongate body from the first transluminal configuration to the second remodeling configuration; wherein the elongate body is configured to press a portion of the coronary sinus against the mitral valve annulus when in the second remodeling configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A mitral valve annulus constricting device comprising a generally U-shaped member formed of resilient material and configured to assume a reduced radius of curvature after delivery into the coronary sinus for exerting a substantially radially inward force on the mitral valve annulus.
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12. A method of reshaping a mitral valve annulus comprising inserting a resilient elongate body at least partially into a coronary sinus using a catheterization technique and adjusting a curvature of the elongate body within the coronary sinus for pressing the coronary sinus against the mitral valve annulus.
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13. A method of closing a gap between the leaflets of a mitral valve comprising advancing a resilient elongate body at least partially into a coronary sinus using a catheterization technique and adjusting the elongate body from a location outside the body for pressing the coronary sinus against a mitral valve annulus of the mitral valve to close the gap.
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14. A medical device for remodeling an extravascular tissue structure adjacent to a vessel in a patient, comprising:
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an elongate body extending between a proximal end and a distal end, and that is adjustable between a first configuration having a first shape such that the elongate body is adapted to be delivered at least in part into the vessel and a second configuration having a second shape such that the elongate body is adapted to exert a force from within the vessel onto the extravascular tissue structure in order to remodel the extravascular tissue structure, wherein the elongate body is adapted to be positioned in the first configuration at least in part within a coronary sinus and is adapted to remodel a mitral valve annulus adjacent to the coronary sinus when the elongate body is located at least in part within the coronary sinus and is adjusted to the second configuration; and
,a forming element that is connected to the elongate body at a point of attachment and that is moveable in order to adjust the elongate body within the coronary sinus between the first and second configurations. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A device for effecting mitral valve annulus geometry of a heart comprising:
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a first fixation element configured to be positioned within and fixed to the coronary sinus of the heart adjacent the mitral valve annulus within the heart; a wire connected to the first fixation element and extending proximally from the first fixation element through the coronary sinus; and a second fixation element configured to be positioned in and fixed in the heart proximal to the first fixation element; wherein the wire is maneuverable from a location outside the vein system to reshape the mitral valve annulus and the first and second fixation elements are configured to hold the mitral valve annulus in a reshaped condition.
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27. A method of effecting mitral valve annulus geometry in a heart, the method including the steps of:
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providing an elongate body having first and second stent sections and a wire connected to the first stent section; fixing the first stent section within the coronary sinus of the heart adjacent to the mitral valve annulus; fixing the second stent section within the heart proximal to the first stent section; and withdrawing the wire for pulling the first stent section toward the second stent section, thereby reshaping the coronary sinus and causing the coronary sinus to press against the mitral valve annulus.
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Specification