Autothreshold with sensing from pacing cathode

US8688216B2 · kind B2 · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• David W. Yost · Brooklyn Park, US
• Deepa Mahajan · North Oaks, US
• Clayton S. Foster · Andover, US
• Aaron R. McCabe · Edina, US
• Shibaji Shome · Arden Hills, US
• Amy Jean Brisben · Windom, US

Key dates

• Filing date: Nov 26, 2012
• Grant date: Apr 1, 2014
• Expiry date: Nov 26, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/3712
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Cardiac electrostimulation energy is delivered to a heart chamber of a subject according to a normal pacing mode using a set of implantable pacing electrodes. When a threshold test for the heart chamber is initiated and a sensing electrode independent from the set of pacing electrodes is unavailable for the heart chamber, cardiac electrostimulation energy is delivered to the subject according to a threshold test mode. The threshold test mode includes sensing a cardiac activity signal from a subject using a set of sensing electrodes that includes an electrode common to the set of pacing electrodes, and changing the electrostimulation energy and sensing a resulting cardiac activity signal using the set of sensing electrodes to determine the optimum electrostimulation energy for capture of the heart chamber.