Heart monitor
First Claim
1. A monitor for monitoring the heart of a patient, the monitor comprising a sensor for producing a first waveform of the patient'"'"'s actual heart rhythm, a processing unit that is configured to generate first data pertaining to the first waveform of the patient'"'"'s actual heart rhythm and to store second data pertaining to a second waveform of a simulated ideal heart rhythm that is simulated using an idealized model, said second data representing a peak mathematical function which is independent of fundamental frequency and which comprises a series of decaying pointed peaks of fixed width separated by a frequency, f, which is equal to the frequency of the peak of greatest magnitude, wherein the processing unit processes the first data as well as the second data for the first and second waveforms and produces an output dependent on differences between the first and second waveforms.
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Accused Products
Abstract
A heart monitor for use as a non-invasive screening tool for identifying potential atrial fibrillation in patients comprises a sensor for producing an output waveform of the patient'"'"'s actual sinus rhythm, a processing unit arranged to store the normalized waveform of an ideal sinus rhythm and to compare the actual and ideal sinus rhythm waveforms and to produce an output dependant on the difference on a display. The value of the output is indicative of whether the patient is atrial fibrillation or other cardiac arrhythmia.
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Citations
23 Claims
- 1. A monitor for monitoring the heart of a patient, the monitor comprising a sensor for producing a first waveform of the patient'"'"'s actual heart rhythm, a processing unit that is configured to generate first data pertaining to the first waveform of the patient'"'"'s actual heart rhythm and to store second data pertaining to a second waveform of a simulated ideal heart rhythm that is simulated using an idealized model, said second data representing a peak mathematical function which is independent of fundamental frequency and which comprises a series of decaying pointed peaks of fixed width separated by a frequency, f, which is equal to the frequency of the peak of greatest magnitude, wherein the processing unit processes the first data as well as the second data for the first and second waveforms and produces an output dependent on differences between the first and second waveforms.
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23. A method of examining an output waveform of a sensor arranged to monitor the heart of a patient, the method comprising simulating an ideal heart rhythm using an idealized model and storing second data pertaining to a second waveform of the simulated ideal heart rhythm, said second data representing a peak mathematical function which is independent of fundamental frequency and which comprises a series of decaying pointed peaks of fixed width separated by a frequency, f, which is equal to the frequency of the peak of greatest magnitude, and processing first data pertaining to the output waveform of the sensor as well as the stored second data and producing an output dependent on differences between the output waveform and the second waveform of the simulated ideal heart rhythm.
Specification