Methods of recognizing and eliminating arcs and arc induced plasma during energy delivery in tissue

US11612424B2 · kind B2 · utility

Assignee

• Medtronic, Inc. · US

Inventors

• Steven J. Fraasch · Maple Grove, US
• Trenton J. Rehberger · Minneapolis, US
• Qin Zhang · Hubei, CN
• Lynn A. Davenport · Roseville, US
• Steven V. Ramberg · North Oaks, US
• Brian T. Howard · Bloomington, US
• Mark T. Stewart · Lino Lakes, US
• Alexander J. Hill · Blaine, US
• John Vandanacker · Rockford, US

Key dates

• Filing date: Nov 7, 2019
• Grant date: Mar 28, 2023
• Expiry date: Apr 15, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/056
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods and systems for monitoring and modifying pulsed field ablation (PFA) energy delivery to prevent patient safety risks and/or delivery device failure. In particular, some embodiments provide methods and systems for detecting and preventing arcs and arc-induced plasma, and their causal events, during delivery of pulsed field ablation energy, as well as methods and systems for identifying conditions leading to potential delivery device failure and correcting charge imbalance or asymmetry.