Method and apparatus for detecting acoustic oscillations in cardiac rhythm
First Claim
Patent Images
1. An implantable cardiac rhythm management device, comprising:
- an accelerometer for generating a phonocardiogram signal;
a controller for processing the phonocardiogram signal to detect heart sounds within the phonocardiogram signal and to measure oscillations in the amplitudes of the heart sounds during successive heart beats; and
, wherein the controller is programmed to detect acoustic alternans when the measured oscillations exceed a specified magnitude and to adjust the operating behavior of the device when acoustic alternans is detected.
1 Assignment
0 Petitions
Accused Products
Abstract
A cardiac rhythm management device is configured to detect oscillations in cardiac rhythm by measuring the amplitudes of heart sounds during successive heart beats. Upon detection of acoustic alternans, the device may adjust its operating behavior to compensate for the deleterious effects of the condition.
-
Citations
22 Claims
-
1. An implantable cardiac rhythm management device, comprising:
-
an accelerometer for generating a phonocardiogram signal;
a controller for processing the phonocardiogram signal to detect heart sounds within the phonocardiogram signal and to measure oscillations in the amplitudes of the heart sounds during successive heart beats; and
,wherein the controller is programmed to detect acoustic alternans when the measured oscillations exceed a specified magnitude and to adjust the operating behavior of the device when acoustic alternans is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for operating an implantable cardiac rhythm management device, comprising:
-
generating a phonocardiogram with an accelerometer;
processing the phonocardiogram signal to detect heart sounds within the phonocardiogram signal and to measure oscillations in the amplitudes of the heart sounds during successive heart beats; and
,detecting acoustic alternans when the measured oscillations exceed a specified magnitude and adjusting the operating behavior of the device when acoustic alternans is detected. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification