Back to results
US 8,798,746 B2Granted
Automatic mechanical alternans detection
AssigneeCardiac Pacemakers, Inc.
InventorsDan Li, Allan C. Shuros, Arjun Sharma
Life of this patent
Estimating the term…
Abstract
This document discusses, among other things, a cardiac mechanical alternans (MA) detector circuit. In an example, the mechanical alternans detector circuit is configured to determine a mechanical alternans (MA) condition. In an example, the MA detector circuit can include a physiologic impedance input configured to receive physiologic information indicative of mechanical alternans. In an example, the MA detector circuit can include an intravascular pressure input configured to receive physiologic information indicative of mechanical alternans.
Claims11
An apparatus, comprising:
- a cardiac mechanical alternans (MA) detector circuit comprising:
- a physiologic impedance input configured to receive physiologic information indicative of mechanical alternans;
- an intravascular pressure input configured to receive physiologic information indicative of mechanical alternans;
- a mechanical input configured to receive physiologic cardiac vibration information indicative of mechanical alternans;
- and
- wherein the MA detector circuit is configured to:
- detect mechanical alternans (MA) respectively from first and different second cardiac regions at least in part using the physiologic information received by the physiologic impedance input, the intravascular pressure input, and the mechanical input;
- and
- classify the mechanical alternans using a comparison of the detected MA from the first and second cardiac regions as one of a discordant MA condition, a concordant MA condition, or an intermediate condition between the concordant and discordant conditions.
6 more elements
An apparatus, comprising:
- a cardiac mechanical alternans (MA) detector circuit comprising:
- a physiologic impedance input configured o receive physiologic information indicative of mechanical alternans;
- and
- intravascular pressure input configured to receive physiologic information indicative of mechanical alternans;
- and
- wherein the MA detector circuit is configured to:
- detect mechanical alternans (MA) respectively from first and different second cardiac regions at least in part using the physiologic information received by the physiologic impedance input and the intravascular pressure input;
- and
- classify the mechanical alternans using a comparison of the detected MA from the first and second cardiac regions as one of a discordant MA condition, a concordant MA condition, or an intermediate condition between the concordant and discordant conditions.
6 more elements
Dependencies are inferred from the claim text.