Steerable lesion excluding heart implants for congestive heart failure
Inventors
Annest, Lon S. • Bertolero, Arthur A. • Chin, Sing-Fatt • Swanson, David K.
Assignees
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Publication Number
US-11331190-B2
Publication Date
2022-05-17
Expiration Date
Abstract
Devices, systems, and methods for treating a heart of a patient may make use of one or more implant structures which limit a size of a chamber of the heart, such as by deploying a tensile member to bring a wall of the heart toward (optionally into contact with) a septum of the heart.
Core Innovation
The invention relates to a system for treating a heart in which a first chamber is bordered by a septum and a wall, and a second chamber is separated from the first chamber by the septum. The system includes a perforation device with a distal tip configured to deliver electrosurgical energy to heart tissue so that the perforation device can penetrate the septum at a first location and penetrate the wall at a second location. The perforation device is steerable through the chamber between the first location and the second location.
The system further includes a first anchor engageable to the septum at the first location and a second anchor engageable to the wall at the second location. A tension member is coupleable with the first anchor and the second anchor to extend through the chamber from the first anchor to the second anchor, and when the anchors are affixed to the septum and wall, the tension member traverses through the penetration in the septum adjacent the first anchor and through the penetration in the wall adjacent the second anchor.
The first anchor and the second anchor are tensionable via the tension member by an amount sufficient to bring the wall and septum into engagement. This engagement effectively excludes a region of the wall and septum from the first chamber with scar tissue extending along the excluded region. The partial content also describes embodiments that include one or more tensile-member implants deployed across a ventricle with anchors engaging a septum at one site and a ventricular wall at another, with tensioning that axially shortens tension members to bring endocardial surfaces into engagement and exclude scar tissue, including optional laterally offset plurality of implants.
Claims Coverage
One independent claim is provided in the partial content. The claim includes four inventive features centered on steerable electrosurgical perforation, dual anchoring, tension-member coupling, and tension-based engagement to exclude a scar-tissue region.
Steerable electrosurgical perforation between septum and wall locations
A perforation device having a distal tip configured to deliver electrosurgical energy to enable the perforation device to penetrate the septum at a first location and to penetrate the wall at a second location, the perforation device being steerable through the chamber between the first location and the second location.
First septum anchor and second wall anchor at corresponding penetrations
A first anchor engageable to the septum at the first location, and a second anchor engageable to the wall at the second location.
Tension member coupling anchors through septum and wall penetrations
A tension member coupleable with the first anchor and the second anchor so as to extend through the chamber from the first anchor to the second anchor, traversing through the penetration in the septum adjacent the first anchor and through the penetration in the wall adjacent the second anchor.
Tensioned engagement to exclude a scar-tissue region
The first anchor and the second anchor are tensionable via the tension member by an amount sufficient to bring the wall and septum into engagement and thereby effectively exclude a region of the wall and septum from the first chamber with scar tissue extending along the excluded region.
The claimed inventive features center on a steerable electrosurgical perforation device that creates a septum penetration and a wall penetration, dual anchors engaged at those respective locations, and a tension member coupling the anchors through the penetrations to tensionably bring the wall and septum into engagement. The claimed outcome is effective exclusion of a wall and septum region from the first chamber with scar tissue extending along the excluded region.
Stated Advantages
Effectively exclude a region of the wall and septum from the first chamber with scar tissue extending along the excluded region.
Documented Applications
Treating congestive heart failure by deploying one or more tensile-member implants across a ventricle to engage a septum and a ventricular wall and exclude scar tissue.
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