Method and device for treatment of mitral insufficiency
First Claim
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1. A method of treating dilatation of the mitral valve annulus, comprising:
- advancing a balloon catheter through a coronary ostium and into a coronary sinus, the balloon catheter including a balloon disposed near a distal region and a balloon expandable stent mounted on the balloon, wherein the balloon and the stent are in a radially collapsed configuration during the advancement, the stent having a length extending from a proximal end to a distal end of the stent;
positioning the stent in a desired location in the coronary sinus;
inflating the balloon to expand the stent in the coronary sinus; and
reducing a circumference of the mitral valve annulus by decreasing the length of the stent, thereby bending the coronary sinus.
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Abstract
A device for treatment of mitral annulus dilation is disclosed, wherein the device comprises two states. In a first of these states the device is insertable into the coronary sinus and has a shape of the coronary sinus. When positioned in the coronary sinus, the device 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.
95 Citations
32 Claims
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1. A method of treating dilatation of the mitral valve annulus, comprising:
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advancing a balloon catheter through a coronary ostium and into a coronary sinus, the balloon catheter including a balloon disposed near a distal region and a balloon expandable stent mounted on the balloon, wherein the balloon and the stent are in a radially collapsed configuration during the advancement, the stent having a length extending from a proximal end to a distal end of the stent; positioning the stent in a desired location in the coronary sinus; inflating the balloon to expand the stent in the coronary sinus; and reducing a circumference of the mitral valve annulus by decreasing the length of the stent, thereby bending the coronary sinus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of treating dilatation of the mitral valve annulus, comprising:
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advancing a balloon catheter through a coronary ostium and into a coronary sinus, the balloon catheter including a balloon disposed near a distal region, the balloon being formed to expand to a predetermined curved shape, the balloon catheter further including a plastically deformable stent mounted on the balloon, wherein the balloon and the stent are in a radially collapsed configuration during the advancement, the stent having a length extending from a proximal end to a distal end of the stent; positioning the stent in a desired location in the coronary sinus under fluoroscopy; inflating the balloon while monitoring mitral regurgitation to plastically expand the stent into a curved shape; and reducing a circumference of the mitral valve annulus by decreasing the length of the stent, thereby causing the coronary sinus to bend. - View Dependent Claims (17, 18, 19, 20)
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21. A method of treating dilatation of a mitral valve annulus, comprising:
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advancing a balloon catheter into a coronary sinus, the balloon catheter including a balloon disposed near a distal region and a balloon expandable implant mounted on the balloon, wherein the balloon and the implant are in a radially collapsed configuration during the advancing, the implant having a length extending from a proximal end to a distal end of the implant; positioning the implant in a desired location in the coronary sinus; inflating the balloon to expand the implant in the coronary sinus; and reshaping the mitral valve annulus by decreasing the length of the implant, thereby altering a shape of the coronary sinus and reducing a circumference of the mitral valve annulus. - View Dependent Claims (22, 23, 24, 25)
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26. A method of treating dilatation of a mitral valve annulus, comprising:
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advancing a catheter into a coronary sinus, the catheter carrying an expandable implant that is in a radially collapsed configuration during the advancing, the implant having a length extending from a proximal end to a distal end of the implant; positioning the implant in a desired location in the coronary sinus; expanding the implant in the coronary sinus; and altering a shape of the coronary sinus by decreasing the length of the implant, thereby reducing a circumference of the mitral valve annulus. - View Dependent Claims (27, 28, 29, 30)
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31. A method of treating dilatation of a mitral valve annulus, comprising:
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advancing a catheter into a coronary sinus, the catheter carrying an expandable implant that is in a radially collapsed configuration during the advancing, the implant having a length extending from a proximal portion to a distal portion of the implant; positioning the implant in the coronary sinus; expanding the implant in the coronary sinus; and changing a shape of the mitral valve annulus by decreasing the length of the implant, thereby altering a shape of the coronary sinus, wherein the implant comprises a proximal implant section, a distal implant section, and a central section extending between the proximal and distal implant sections, the central section being retained in a contracted state during the advancing by a biodegradable structure, wherein the central section is retained in the contracted state by the biodegradable structure after expansion, within the coronary sinus, of both the proximal and distal implant sections, and the central section is configured to, upon expansion, draw the proximal and distal implant sections together and to decrease the length of the implant. - View Dependent Claims (32)
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Specification