Devices and methods for heart valve treatment
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Accused Products
Abstract
Devices and methods for improving the function of a valve (e.g., mitral valve) by positioning an implantable device outside and adjacent the heart wall such that the device alters the shape of the heart wall acting on the valve. The implantable device may alter the shape of the heart wall acting on the valve by applying an inward force and/or by circumferential shortening (cinching). The shape change of the heart wall acting on the valve is sufficient to change the function of the valve, and may increase coaptation of the leaflets, for example, to reduce regurgitation.
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Citations
130 Claims
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1-113. -113. (canceled)
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114. A method of reducing the circumference of a mitral valve annulus comprising the steps of:
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providing a mitral valve reducing device comprising an elongate member;
positioning the elongate member in a first position at a location adjacent the atrioventricular groove and exterior of the vasculature of the heart, wherein in the first position, the elongate member has a first radius of curvature; and
releasing the elongate member in the .atrioventricular groove in a second position wherein in the second position the elongate member has a second radius of curvature less than the first radius of curvature so as to reduce the circumference of the mitral valve annulus. - View Dependent Claims (115, 116, 117, 118, 119, 120, 121, 122)
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123. A system for reducing the mitral annulus of a heart comprising:
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a mitral valve reducing device comprising;
an elongate member having a first position wherein in the first position, the elongate member has a first radius of curvature, and a second position wherein in the second position the elongate member has a second radius of curvature less than the first radius of curvature; and
a delivery system comprising;
a catheter configured to access a pericardial space of a heart, adjacent an atrioventricular groove and outside of vasculature of the heart; and
a mitral valve reducing device delivery member configured to place the reducing device in the atrioventricular groove. - View Dependent Claims (124, 125)
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126. A mitral valve reduction device comprising:
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an elongate member having a first position wherein in the first position, the elongate member has a first radius of curvature, a second position wherein in the second position the elongate member has a second radius of curvature less than the first radius of curvature, and a bending mechanism configured to move the elongate member from the first position to the second position; and
a coating on the elongate member, wherein the coating comprises a tissue response promoter for promoting a tissue response adjacent the elongate member. - View Dependent Claims (127)
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128. A mitral valve reduction device comprising:
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an elongate member having a first position wherein in the first position, the elongate member has a first radius of curvature and a second position wherein in the second position the elongate member has a second radius of curvature less than the first radius of curvature; and
an end comprising a tissue engaging element configured to engage the heart within the atrioventricular groove. - View Dependent Claims (129, 130)
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Specification