Cardiac devices and methods for minimally invasive repair of ischemic mitral regurgitation
First Claim
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1. An apparatus for treating atrioventricular valve regurgitation, comprising:
- a cutting arrangement configured to sever at least one chord attaching an atrioventricular leaflet to an internal cardiac muscle;
a positioning catheter configured to position the cutting arrangement proximate the at least one chord; and
a grasping arrangement which is configured to at least partially constrain a movement of the at least one chord relative to the catheter,wherein the catheter comprises an opening provided within a side wall in which the grasping arrangement constrains the movement of the at least one chord and in which the cutting arrangement is configured to sever the at least one chord, wherein the grasping and cutting arrangements are provided in the catheter, wherein the grasping arrangement comprises a grasping member configured to slide along a longitudinal direction relative to an extension axis of the catheter, and wherein the grasping member comprises a wire.
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Abstract
Novel apparatus and minimally invasive methods to treat atrioventricular valve regurgitation that is a result of tethering of chordae attaching atrioventricular valve leaflets to muscles of the heart, such as papillary muscles and muscles in the heart wall, thereby restricting the closure of the leaflets. Catheter embodiments for delivering and positioning chordal severing and elongating instruments are described.
151 Citations
34 Claims
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1. An apparatus for treating atrioventricular valve regurgitation, comprising:
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a cutting arrangement configured to sever at least one chord attaching an atrioventricular leaflet to an internal cardiac muscle; a positioning catheter configured to position the cutting arrangement proximate the at least one chord; and a grasping arrangement which is configured to at least partially constrain a movement of the at least one chord relative to the catheter, wherein the catheter comprises an opening provided within a side wall in which the grasping arrangement constrains the movement of the at least one chord and in which the cutting arrangement is configured to sever the at least one chord, wherein the grasping and cutting arrangements are provided in the catheter, wherein the grasping arrangement comprises a grasping member configured to slide along a longitudinal direction relative to an extension axis of the catheter, and wherein the grasping member comprises a wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification