Irrigated ablation catheter with multiple segmented ablation electrodes

US11395694B2 · kind B2 · utility

Assignee

• St. Jude Medical, LLC · US

Inventors

• Cary Hata · Irvine, US
• Thu Tran · Garden Grove, US
• Alan de la Rama · Cerritos, US
• Tho Hoang Nguyen · Talbert, US
• Irvin John Narciso · Rancho Santa Margarita, US
• Peter Chen · Irvine, US
• Hanh Ngoc Do · Garden Grove, US

Key dates

• Filing date: May 7, 2009
• Grant date: Jul 26, 2022
• Expiry date: Sep 27, 2030

Classification

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

Abstract

In one embodiment, an irrigated catheter ablation apparatus comprises an elongated body having a distal end, a proximal end, and at least one fluid lumen extending longitudinally therein; and a plurality of segmented ablation electrodes on a distal portion of the elongated body. The electrodes are spaced from the proximal end and from the distal end of the elongated body by electrically nonconductive segments. The electrodes are spaced from each other longitudinally by electrically nonconductive segments. For each electrode that is longitudinally disposed next to one of the nonconductive segments, an edge is formed between an electrode end of the electrode and a nonconductive segment end of the nonconductive segment. A plurality of elution holes are disposed adjacent to the edges. A plurality of ducts establish fluid communication between the elution holes and the fluid lumen.