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US 2022/0022935 A1Published application
Transcatheter closure of patent foramen ovale with bipolar rf application
AssigneeThe Trustees of Columbia University in the City of New York
InventorRobert Jay SOMMER
Life of this patent
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Abstract
Apparatus and method for closure of the patent foramen ovale (PFO) is provided using expandable discs to appose the septum primum and septum secundum and to apply bipolar radiofrequency energy to anneal the tissues.
Claims20
A system for transseptal closure of the patent foramen ovale (PFO) comprising:
- a tubular loader defining a lumen;
- a first RF applicator comprising
- a first cable defining a distal end and a proximal end;
- a first disc coupled to the distal end of the first cable and insertable into the left atrium, the first disc fabricated from an electrically conductive, resilient material and defining an expanded disc-shaped configuration and a collapsed configuration for positioning within the lumen of the tubular loader;
- and
- a first contact at the proximal end of the first cable for electrical attachment to a bipolar RF generator;
- a second RF applicator comprising
- a second cable defining a distal end and a proximal end;
- a second disc coupled to the distal end of the second cable and insertable into the right atrium, the second disc fabricated from an electrically conductive, resilient material and defining an expanded disc-shaped configuration and a collapsed configuration for positioning within the lumen of the tubular loader;
- and
- a second contact at the proximal end of the second cable for electrical attachment to the bipolar RF generator.
8 more elements
A method of transseptal closure of the patent foramen ovale (PFO) comprising:
- inserting a distal end of a tubular loader into the left atrium of a subject's heart via the right atrium and the septum;
- deploying a first RF applicator within the tubular loader across the septum and into the left atrium, the first RF applicator comprising a first cable and a first disc fabricated from an electrically conductive, resilient material in a collapsed configuration within the tubular loader;
- deploying the first disc beyond the distal end of the tubular loading such that the first disc is allowed to resiliently expand from the collapsed configuration to an expandable disc-shaped configuration;
- withdrawing the first RF applicator such that the first disc is in apposition against the septum;
- withdrawing the tubular loader such that the distal end of the tubular loader is within the right atrium;
- deploying a second RF applicator within the tubular loader beyond the distal end of the tubular loader and into the right atrium, the second RF applicator comprising a second cable and a second disc fabricated from an electrically conductive, resilient material such that the second disc is allowed to resiliently expand from a collapsed position into an expanded disc-shaped configuration;
- advancing the second RF applicator such that the second disc is in apposition against the septum, thereby approximating the septum primum and septum secondum;
- and
- applying bipolar RF energy across the first and second disc to the septum via the first and second cables.
6 more elements
Dependencies are inferred from the claim text.