Energy based devices and methods for treatment of patent foramen ovale

US8465485B2 · kind B2 · utility

Assignee

• Terumo Kabushiki Kaisha · JP

Inventors

• William Malecki · Minneapolis, US
• Dan Francis · Mountain View, US
• Kenneth N. Horne · Palo Alto, US
• Mark Deem · Mountain View, US
• Hanson S. Gifford, III · Woodside, US
• Jose Alejandro · Sunnyvale, US

Key dates

• Filing date: Sep 16, 2011
• Grant date: Jun 18, 2013
• Expiry date: Sep 16, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2201/12
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods, devices and systems for treating patent foramen ovale (PFO) involve advancing a catheter device to a position in a heart for treating a PFO, bringing tissues adjacent the PFO at least partially together, and applying energy to the tissues to substantially close the PFO acutely. Catheter devices generally include an elongate catheter body, at least one tissue apposition member at or near the distal end for bringing the tissues together, and at least one energy transmission member at or near the distal end for applying energy to the tissues. In some embodiments, the tissue apposition member(s) also act as the energy transmission member(s). Applied energy may be monopolar or bipolar radiofrequency energy or any other suitable energy, such as laser, microwave, ultrasound, resistive heating or the like.