Method and apparatus for determining cardiac performance in a patient with a conductance catheter

US7925335B2 · kind B2 · utility

Assignee

• The Board of Regents of the University of Texas System · US

Inventors

• Marc D. Feldman · Austin, US
• Jonathan W. Valvano · Austin, US
• John A. Pearce · Austin, US
• Chia-Ling Wei · Tainan, TW

Key dates

• Filing date: Sep 3, 2004
• Grant date: Apr 12, 2011
• Expiry date: Sep 4, 2026

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/053
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus for determining cardiac performance in the patient involving a conductance catheter (12) for measuring conductance and blood volume in a heart chamber of the patient. The apparatus includes a processor (14) for determining instantaneous volume of the ventricle by applying a non-linear relationship between the measured conductance and the volume of blood in the heart chamber to identify mechanical strength of the chamber. The processor (14) is in communication with the conductance catheter (12).