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-10478305-B2
Publication Date
2019-11-19
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 method for treating a heart having a left ventricle bordered by a septum and a wall, and a second chamber separated from the first chamber by the septum. The method uses a perforation device having a distal tip configured to deliver electrosurgical energy to enable the perforation device to penetrate heart tissue, and penetrates the septum at a first selected location and the wall at a second selected location for deployment of an implant.
A key part of the invention is controllably steering the perforation device between the first location and the second location. The implant is deployed by affixing a first anchor adjacent the penetration of the septum and affixing a second anchor adjacent the penetration of the wall, and tension is applied between the first anchor and the second anchor after the anchors are affixed.
The tension is applied sufficiently to bring the wall and septum into engagement so as to effectively exclude a region of the wall and septum from the left ventricle with scar tissue extending along the excluded region. In this way, the method treats the heart by creating engagement of the wall and septum while using tension to exclude an intended region associated with scar tissue.
Claims Coverage
The independent claim contains a single core inventive concept with multiple dependent refinements. The independent claim includes electrosurgical perforation, controllably steering between two penetration locations, deploying septal and wall anchors, and applying tension to exclude a scar-tissue region from the left ventricle.
Electrosurgical perforation with dual penetration locations
providing a perforation device having a distal tip that is configured to deliver electrosurgical energy to heart tissue to enable the perforation device to penetrate through the heart tissue; penetrating, via the perforation device, the septum at a first location selected for deployment of an implant; and penetrating, via the perforation device, the wall at a second location selected for the deployment of the implant.
Controllably steering between septum and wall
controllably steering the perforation device between the first location and the second location.
Anchor affixation and tension to engage wall and septum
deploying the implant by affixing a first anchor of the implant adjacent the penetration of the septum, affixing a second anchor of the implant adjacent the penetration of the wall, and applying tension between the first anchor and the second anchor, wherein the tensioned members are tensioned sufficiently to bring the wall and septum into engagement.
Excluding a scar-tissue region from the left ventricle
thereby effectively exclude a region of the wall and septum from the left ventricle with scar tissue extending along the excluded region.
Across the independent claim, the inventive concept is steering an electrosurgical perforation device to penetrate both the septum and the wall at selected locations, then affixing septal and wall anchors and applying tension to bring the wall and septum into engagement so as to exclude a scar-tissue region from the left ventricle.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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