Cardiac tissue anchoring devices, methods, and systems for treatment of congestive heart failure and other conditions
Inventors
Moshe, Meir • Annest, Lon S. • Van Bladel, Kevin
Assignees
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Publication Number
US-11540822-B2
Publication Date
2023-01-03
Expiration Date
Abstract
A heart tissue gripping device may include a body portion, an elongate shaft, and a tissue gripping member that is attached to the distal end of the elongate shaft. The tissue gripping member being may be positioned adjacent a heart surface by insertion through an incision in the body. The tissue gripping member may releasably attach to tissue of the heart surface to facilitate a surgical instrument in performing one or more procedures. A coupling of the tissue gripping member may releasably attach the surgical device to the tissue gripping member to allow the device to access the tissue of the heart surface.
Core Innovation
The invention relates to cardiac tissue anchoring devices and methods for treating congestive heart failure by reducing left-ventricle volume and bringing ventricular walls into engagement. A heart tissue gripping device includes an elongate shaft, a tissue gripping member releasably attached to heart tissue, and a coupling configured to attach a tissue penetrating device for penetrating heart wall tissue.
In the method, the tissue gripping member is positioned adjacent a surface of a heart so as to grip tissue of the heart surface releasably. A tissue penetrating device is attached to the coupling of the tissue gripping member, the tissue of the heart wall is penetrated, and then the tissue penetrating device is detached from the coupling. A tension member is inserted through the heart wall penetration and into a chamber of the heart, and the tissue gripping device uses a fastening component to grip the tension member to provide hemostasis during detachment and removal of the tissue gripping member.
For treating the heart, a device is attached to a surface of a first wall of the heart by gripping heart tissue with the tissue gripping member, and the first wall is penetrated with the tissue penetrating device. The tension member is inserted through the first wall and through a second wall separated by a chamber, and a first anchor is positioned in engagement with the second wall and coupled with the tension member. A second anchor is positioned in engagement with the first wall, the second anchor is slidably coupled with the tension member to allow sliding along the length of the tension member, an anchor force is applied so that the first anchor urges the second wall toward the first wall and the second anchor urges the first wall toward the second wall, and the second anchor is secured to restrict proximal movement.
Claims Coverage
The partial content identifies two independent claims. The claim coverage centers on releasably attaching a tissue gripping member for heart wall penetration, inserting and gripping a tension member to provide hemostasis, and using first and second anchors to urge first and second heart walls into engagement.
Heart wall penetration with releasable tissue grip and tension-member hemostasis
positioning a tissue gripping member of a heart tissue gripping device adjacent a surface of the heart; gripping tissue of the heart surface so as to releasably attach the tissue gripping member to the heart surface; attaching a tissue penetrating device to a coupling of the tissue gripping member; penetrating the tissue of the heart wall with the tissue penetrating device; detaching the tissue penetrating device from the coupling; inserting a tension member through the heart wall penetration and into a chamber of the heart; gripping the tension member with a fastening component of the heart tissue gripping device; and removing the tissue gripping member from the body, wherein the fastening component provides hemostasis to the heart wall by gripping the tension member.
Treating a heart with first and second walls urged into engagement by anchors coupled to a tension member
attaching a device to a surface of a first wall of the heart by gripping the heart tissue with a tissue gripping member of the device; penetrating the tissue of the first wall of the heart with a tissue penetrating device; inserting a tension member through the first wall of the heart and through a second wall of the heart, the first wall and second wall being separated by a chamber; positioning a first anchor in engagement with the second wall, the first anchor being coupled with the tension member; positioning a second anchor in engagement with the first wall, the second anchor being slidably coupled with the tension member to allow the second anchor to slide along a length of the tension member; applying an anchor force so that the first anchor urges the second wall toward the first wall and the second anchor urges the first wall toward the second wall; and securing the second anchor to restrict proximal movement.
Across the two independent claims, the core coverage is the sequence of gripping heart tissue for releasable attachment, coupling to and detaching from a tissue penetrating device to penetrate a heart wall, inserting a tension member through a chamber, and using fastening and anchor components to provide hemostasis and urge first and second heart walls toward each other.
Stated Advantages
Provides hemostasis to the heart wall by gripping the tension member during removal and detachment of the tissue gripping member.
Documented Applications
Treating a heart for congestive heart failure by reducing left-ventricle volume and bringing ventricular walls into engagement through anchor-based urging of the first and second walls toward each other.
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