Single catheter mitral valve repair device and method for use
First Claim
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1. A method of repairing a heart valve of a heart, the method comprising:
- providing a catheter having a proximal portion and a distal portion, wherein the distal portion comprises a distal portion main body and an extendable engagement tip, wherein the distal portion main body has a width, wherein the extendable engagement tip is telescopically connected to the distal portion main body by a sliding connecting rod, wherein the sliding connecting rod is connected to the distal portion main body at a first side of the distal portion main body and wherein the sliding connecting rod is radially displaced away from a central longitudinal axis of the main body, wherein the extendable tip is configured to be telescopically and distally extended away from and retracted back towards the distal portion main body, and wherein the distal portion has an open configuration and a closed configuration, wherein in the closed configuration the extendable tip is positioned against the distal portion main body, and in the open configuration the extendable tip is telescopically extended distally away from the distal portion main body to create a tissue-receiving opening bordered by the extendable tip, connecting rod, and distal portion main body, wherein the tissue-receiving opening is open on a second side of the elongate body distal portion and closed on the first side of the distal portion, wherein the second side of the elongate body distal portion is generally opposite to the first side of the distal portion, and the tissue-receiving opening extends across most of the width of the distal portion, across the central longitudinal axis of the main body, and from the second side of the distal portion main body to the connecting rod, wherein the catheter distal portion further comprises a first tissue fastener;
advancing the catheter distal portion into the heart;
positioning the catheter distal portion at a position adjacent a first tissue portion, wherein the first tissue portion comprises a portion of a first heart valve leaflet;
extending the extendable engagement tip away from the distal portion main body to thereby form the tissue-receiving opening;
positioning the first tissue portion within the tissue-receiving opening;
retracting the extendable engagement tip toward the distal portion main body to thereby grasp the first tissue portion between the extendable engagement tip and the distal portion main body;
deploying the first tissue fastener into the first tissue portion; and
re-extending the extendable engagement tip away from the distal portion main body to thereby release the first tissue portion, wherein said re-extending the extendable engagement tip away from the distal portion main body occurs after advancing the first suture line through deployment of the first tissue fastener into the first tissue portion.
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Abstract
A single catheter mitral valve repair device for stabilizing a tissue portion and selectively applying a tissue fastener thereto. The single catheter mitral valve repair device of the present invention includes an extendable engagement tip having at least one vacuum port formed thereon, at least one deployable fastener in communication with the engagement tip, and at least one actuator member in communication with the port. The deployable fastener is capable of controllably engaging and fastening a tissue segment located proximal to the engagement tip.
63 Citations
20 Claims
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1. A method of repairing a heart valve of a heart, the method comprising:
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providing a catheter having a proximal portion and a distal portion, wherein the distal portion comprises a distal portion main body and an extendable engagement tip, wherein the distal portion main body has a width, wherein the extendable engagement tip is telescopically connected to the distal portion main body by a sliding connecting rod, wherein the sliding connecting rod is connected to the distal portion main body at a first side of the distal portion main body and wherein the sliding connecting rod is radially displaced away from a central longitudinal axis of the main body, wherein the extendable tip is configured to be telescopically and distally extended away from and retracted back towards the distal portion main body, and wherein the distal portion has an open configuration and a closed configuration, wherein in the closed configuration the extendable tip is positioned against the distal portion main body, and in the open configuration the extendable tip is telescopically extended distally away from the distal portion main body to create a tissue-receiving opening bordered by the extendable tip, connecting rod, and distal portion main body, wherein the tissue-receiving opening is open on a second side of the elongate body distal portion and closed on the first side of the distal portion, wherein the second side of the elongate body distal portion is generally opposite to the first side of the distal portion, and the tissue-receiving opening extends across most of the width of the distal portion, across the central longitudinal axis of the main body, and from the second side of the distal portion main body to the connecting rod, wherein the catheter distal portion further comprises a first tissue fastener; advancing the catheter distal portion into the heart; positioning the catheter distal portion at a position adjacent a first tissue portion, wherein the first tissue portion comprises a portion of a first heart valve leaflet; extending the extendable engagement tip away from the distal portion main body to thereby form the tissue-receiving opening; positioning the first tissue portion within the tissue-receiving opening; retracting the extendable engagement tip toward the distal portion main body to thereby grasp the first tissue portion between the extendable engagement tip and the distal portion main body; deploying the first tissue fastener into the first tissue portion; and re-extending the extendable engagement tip away from the distal portion main body to thereby release the first tissue portion, wherein said re-extending the extendable engagement tip away from the distal portion main body occurs after advancing the first suture line through deployment of the first tissue fastener into the first tissue portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of securing suture to a mitral valve of a heart, the method comprising:
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advancing a catheter into the heart, the catheter having a generally cylindrical elongate body having a proximal end and a distal end and a longitudinal axis, an extendable engagement tip capable of moving in telescopic relation to the elongate body distal end, an extendable support slidingly extending from the elongate body distal end at a first side thereof, wherein the extendable support is radially displaced away from the longitudinal axis of the elongate body, wherein the extendable engagement tip is secured to the extendable support, wherein when the extendable support is slidingly extended from the elongate body distal end, a tissue-receiving opening is formed which is defined by the elongate body distal end, the extendable engagement tip, and the extendable support, and wherein the tissue-receiving opening extends from the extendable support at the first side of the elongate body distal end, across the longitudinal axis of the elongate body, and to a second side of the elongate body distal end, wherein the second side of the elongate body distal end is radially opposite to the first side of the elongate body distal end, the catheter further comprising a first suture portion and a first needle; advancing the elongate body distal end to a position adjacent a first tissue portion, wherein the first tissue portion is a first valve leaflet of the mitral valve; extending the extendable engagement tip and the extendable support distally of the elongate body distal end to thereby create the tissue-receiving opening; positioning the first valve leaflet within the tissue-receiving opening; retracting the extendable engagement tip and the extendable support back toward the elongate body distal end to thereby mechanically retain and stabilize the first valve leaflet; passing the first needle through the first valve leaflet, wherein the first suture portion is pulled through the first valve leaflet by the first needle; releasing the first valve leaflet by extending the extendable engagement tip and the extendable support distally from the elongate body distal end; and withdrawing the catheter from the heart. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of repairing a mitral valve of a heart, comprising:
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providing a catheter comprising; a main catheter body distal portion having a width and a distal end and a central longitudinal axis, the distal end having a first side and a second side, wherein the first side is on an opposite side of the central longitudinal axis from the second side, the distal end having a generally circular shape; a main catheter body proximal portion; an extendable engagement tip at the main catheter body distal portion, the extendable engagement tip configured to extend distally from the main catheter body distal portion to thereby form a tissue-receiving recess between the main catheter body distal portion and the extendable engagement tip, wherein the extendable engagement tip comprises a proximal end having a generally circular shape which matches the shape of the distal end of the main catheter body; an extendable support configured to distally extend from the distal end of the main catheter body from a position adjacent the first side of the distal end of the main catheter body, wherein the extendable support is positioned radially away from the central longitudinal axis of the main catheter body distal portion and radially away from a central axis of the extendable engagement tip, the extendable support having a distal end with the extendable engagement tip positioned thereon, whereby when the extendable engagement tip is extended distally, the tissue-receiving recess between the main catheter body distal portion and the extendable tip extends across the entire width of the main catheter body distal portion except for the area at the first side of the distal end of the main catheter body, and wherein the tissue-receiving recess extends across the central longitudinal axis of the main catheter body distal portion; a first tissue fastener positioned at or adjacent the main catheter body distal end and configured to be advanced across the tissue-receiving recess between the main catheter body distal portion and the extendable engagement tip; and an actuation device positioned at the main catheter body proximal portion, wherein the actuation device is configured to selectively extend and retract the extendable engagement tip from the main catheter body distal portion; advancing the main catheter body distal portion to a position wherein the distal end thereof is within the heart adjacent a first valve leaflet of the mitral valve; activating the actuation device to extend the extendable engagement tip distally from the main catheter body distal portion to thereby form the tissue-receiving recess; positioning the first valve leaflet within the tissue-receiving recess; retaining and stabilizing the first valve leaflet by retracting the extendable engagement tip toward the main catheter body distal portion to thereby mechanically hold the first valve leaflet between the extendable engagement tip and the main catheter body; advancing the first tissue fastener across the tissue-receiving recess between the main catheter body distal portion and the extendable engagement tip, whereby the first tissue fastener passes through the first valve leaflet; and releasing the first valve leaflet from the main catheter body by extending the extendable engagement tip distally from the main catheter body distal portion. - View Dependent Claims (17, 18, 19, 20)
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Specification