System and method for treating ischemia by improving cardiac efficiency
First Claim
Patent Images
1. A cardiac stimulator comprising:
- a cardiac sensor, wherein the cardiac sensor senses a measure of heart function and wherein the cardiac sensor produces an output signal indicative of the heart function measure;
a processor, wherein the processor comprises instructions for producing a first alert signal if the heart function measure is indicative of ischemia;
a waveform generator, wherein the waveform generator produces a stimulation signal in response to the first alert signal and wherein the stimulation signal comprises a leading anodal phase and a trailing phase cathodal phase that is produced after two or more leading anodal phases and wherein the trailing phase follows a preceding leading anodal phase after a delay of from 0 to about 0.25 milliseconds;
andan electrode for applying the stimulation signal to the cardiac tissue.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for treating ischemic heart disease by increasing heart efficiency. By application of an anodal pulse at or above threshold, the efficiency of the heart is improved by increasing the resting membrane potential of the myocardial cells, increasing the size of the anodal virtual stimulatory electrode, or reducing the ventricular stretching during filling of the ventricle.
-
Citations
11 Claims
-
1. A cardiac stimulator comprising:
-
a cardiac sensor, wherein the cardiac sensor senses a measure of heart function and wherein the cardiac sensor produces an output signal indicative of the heart function measure; a processor, wherein the processor comprises instructions for producing a first alert signal if the heart function measure is indicative of ischemia; a waveform generator, wherein the waveform generator produces a stimulation signal in response to the first alert signal and wherein the stimulation signal comprises a leading anodal phase and a trailing phase cathodal phase that is produced after two or more leading anodal phases and wherein the trailing phase follows a preceding leading anodal phase after a delay of from 0 to about 0.25 milliseconds; and an electrode for applying the stimulation signal to the cardiac tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A cardiac stimulator comprising:
-
a cardiac sensor, wherein the cardiac sensor senses a measure of heart function and wherein the cardiac sensor produces an output signal indicative of the heart function measure; a processor, wherein the processor comprises instructions for producing a first alert signal if the heart function measure is indicative of ischemia; a waveform generator, wherein the waveform generator produces a stimulation signal solely comprising an anodal waveform in response to the first alert signal and wherein the stimulation signal has an amplitude and a duration; and an electrode for applying the stimulation signal to the cardiac tissue. - View Dependent Claims (9, 10, 11)
-
Specification