Cardiac monitoring system
First Claim
1. An apparatus for monitoring and converting an EKG waveform comprising electrical sensors for detecting said EKG waveform, a signal conditioning means in communication with said electrical sensors for inverting all negative portions of said detected EKG waveform, a pulse generator means including a low pass filter means for generating pulses having pulse width modulated by a change in location of a ST segment of said EKG waveform, and a comparator means for determining the amount of ST segment deviation from a normal value.
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Abstract
A cardiac monitor system reads an EKG signal and conditions the EKG waveform in a manner that accentuates the information on ST segment location, within the waveform. ST segment location is used to modulate pulse width of a generated square wave permitting fast and accurate access to information regarding ST segment elevation and depression.
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Citations
12 Claims
- 1. An apparatus for monitoring and converting an EKG waveform comprising electrical sensors for detecting said EKG waveform, a signal conditioning means in communication with said electrical sensors for inverting all negative portions of said detected EKG waveform, a pulse generator means including a low pass filter means for generating pulses having pulse width modulated by a change in location of a ST segment of said EKG waveform, and a comparator means for determining the amount of ST segment deviation from a normal value.
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3. In a system for monitoring a heart for the detection of abnormalities is an EKG signal apparatus comprising:
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(a) signal acquisition means for detecting signal; (b) signal conditioning means in communication with said signal acquisition means and comprising;
means for receiving said detected EKG signal;
signal adjustment means for normalizing said detected EKG signal; and
a signal inverting means for converting said normalized EKG signal into a DC signal; and(c) pulse modulating means in communication with said signal conditioning means and comprising;
means for receiving said DC signal;
low pass filter means for processing said DC signal; and
pulse generating means generating an output pulse, wherein said output pulse is pulse width modulated by said processed DC signal. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A method for detecting ST segment deviation comprising the steps of:
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a) detecting an EKG waveform; b) conditioning the EKG waveform by inverting all negative portions of said waveform to positive values and passing said inverted EKG waveform through a low pass filter; c) generating a pulse wherein said pulse is modulated by the change in ST segment location of said EKG waveform; and d) comparing said generated puls with a pulse modulated by an EKG waveform having a normal ST segment location. - View Dependent Claims (11, 12)
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Specification