Systems and methods for exploiting near-field impedance and admittance for use with implantable medical devices

US8812093B2 · kind B2 · utility

Assignee

• PACESETTER, INC. · US

Inventors

• Dan E. Gutfinger · Craydon Court, US
• Fujian Qu · San Jose, US
• Alex Soriano · Ventura, US
• Ryan Rooke · Redondo Beach, US
• Yelena Nabutovsky · Sunnyvale, US
• Riddhi Shah · San Jose, US

Key dates

• Filing date: Jan 14, 2011
• Grant date: Aug 19, 2014
• Expiry date: May 3, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/36521
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Various techniques are provided for use with an implantable medical device for exploiting near-field impedance/admittance. Examples include techniques for assessing heart chamber disequilibrium, detecting chamber volumes and pressures, calibrating near-field-based left atrial pressure (LAP) estimation procedures and for assessing the recovery from injury at the electrode-tissue interface. In one particular example, the implantable device assesses the degree of concordance between the left ventricle (LV) and the right ventricle (RV) by quantifying a degree of scatter between LV and RV near-field admittance values. An increase in RV admittance is indicative of RV failure, an increase in LV admittance is indicative of LV failure, and an increase in both LV and RV admittance is indicative of biventricular failure.