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US 5,509,425 AGranted
Arrangement for and method of diagnosing and warning of a heart attack
OwnerGenquan Fenginventor
Life of this patent
Estimating the term…
Abstract
Heart/drain disease is non-invasively, accurately diagnosed at an early stage. A plurality of functions descriptive of the patient are mathematically determined. A set of indices for each function is established in advance. Each index has two states indicative of the patient's condition. An integrated pattern of the states of the indices from a plurality of the functions is generated and matched against a stored collection of index patterns whose diagnosis and attack condition is known.
Claims18
A method of diagnosing a cardiac condition and warning of a heart attack of a patient, comprising the steps of:
- (a) acquiring electrocardiographic signals from the patient;
- (b) mathematically determining a plurality of functions descriptive of the patient from the electrocardiographic signals;
- (c) establishing a set of indices for each function, each index having two states, each indicative of the cardiac condition of the patient;
- (d) recognizing the state of each index for each function;
- (e) generating an integrated pattern of the states of the indices from a plurality of the functions;
- (f) storing a collection of index patterns, each containing a multitude of patterns of the states of indices for a multitude of patients whose cardiac condition is known;
- (g) storing a collection of index patterns of the patients having a heart attack each containing a multitude of patterns of the states of indices for a multitude of patients whose heart attack condition is known;
- (h) matching the generated integrated pattern against the stored collection of the index patterns of the patients having a heart attack, to determine the condition of heart attack of the patient being diagnosed;
- (i) matching the generated integrated pattern against the stored collection of index patterns to determine the cardiac condition of the patient being diagnosed;
- and
- (j) generating a signal for warning of a heart attack when the heart attack of the patient being diagnosed with step (h).
8 more elements
An arrangement for diagnosing a cardiac condition and warning of a heart attack of a patient, comprising:
- (a) means for acquiring electrocardiographic signals from the patient;
- (b) means for mathematically determining a plurality of functions descriptive of the patient from the electrocardiographic signals;
- (c) means for establishing a set of indices for each function, each index having two states, each indicative of the cardiac condition of the patient;
- (d) means for recognizing the state of each index for each function;
- (e) means for generating an integrated pattern of the states of the indices from a plurality of the functions;
- (f) means for storing a collection of index patterns, each containing a multitude of patterns of the states of indices for a multitude of patients whose cardiac condition is known;
- and
- (g) means for storing a collection of index patterns of the patients having a heart attack each containing a multitude of patterns of the states of indices for a multitude of patients whose heart attack condition is known;
- (h) means for matching the generated integrated pattern against the stored collection of the index patterns of the patients having a heart attack to determine the condition of heart attack of the patient being diagnosed;
- (i) means for matching the generated integrated pattern against the stored collection of index patterns to determine the cardiac condition of the patient being diagnosed;
- and
- (j) means for generating a signal for warning of a heart attack when the heart attack of the patient being diagnosed with step (h).
9 more elements
A method of diagnosing a cardiac condition and warning of a heart attack of a patient, comprising the steps of:
- (a) acquiring electrical analog electrocardiographic signals from the patient;
- (b) mathematically determining a plurality of functions descriptive of the patient from the analog signals, including power spectrum, phase angle, impulse response, amplitude histogram, cross correlation and coherence;
- (c) establishing a set of indices for each function, each index having two states, each indicative of the cardiac condition of the patient;
- (d) recognizing the state of each index for each function;
- (e) generating an integrated pattern of the states of the indices from a plurality of the functions;
- (f) storing a collection of index patterns, each containing a multitude of patterns of the states of indices for a multitude of patients whose condition is known;
- (g) storing a collection of index patterns of the patients having heart attack each containing a multitude of patterns of the states of indices for a multitude of patients whose heart attack condition is known;
- (h) matching the generated integrated pattern against the stored collection of the index patterns of the patients having a heart attack to determine the condition of heart attack of the patient being diagnosed;
- (i) matching the generated integrated pattern against the stored collection of index patterns to determine the cardiac condition of the patient being diagnosed;
- (j) generating a signal for warning of a heart attack when the heart attack of the patient being diagnosed with step (h);
- and
- (k) said establishing step (indices) including:
- (I) Power Spectrum
- (1) 1/2--Is the amplitude ratio of the first peak/second peak above a limit ?
- (2) O--Is shape of any of first four peaks rounded similar to omega (.OMEGA.)?
- (3) U1--Do any of first four peaks have a twinned peak?
- (4) U2--Are the intervals between any of first four peaks unequal?
- (5) U3--Is the inequality of the intervals between any of the first four peaks above a limit?
- (6) U3xy--Same as U3 but are any two peaks simultaneously positive?
- (7) U4--Is the shape of any peak similar to a hill ()?
- (8) U5--Is the shape of any peak similar to a mountain ()?
- (9) N1--Is the first peak null?
- (10) N3--Is the third and/or fourth peak null?
- (11) S--Is the heart rate below 60 beats per minute?
- (12) SS--Is the heart rate below 50 beats per minute?
- (13) F--Is the heart rate over 100 beats per minute?
- (14) FF--Is the heart rate above 120 beats per minute?
- (15) A1--Is the amplitude of the first peak above a limit?
- (16) A2--Is the amplitude of any two of the first four peaks above a limit?
- (17) A3--Is the amplitude of the second peak above a limit?
- (18) A4--Is the amplitude of the third and/or fourth peak above a limit?
- (19) A5--Is any one of the 5th-12th peaks higher than the first peak?
- (20) A55--Are any two of the 5th-12th peaks higher than the first peak?
- (21) A6--Are more than two of the 5th-12th peaks higher than the first peak ?
- (22) Nn--Are the first and second peaks higher than the third and fourth peaks?
- (23) nN--Are the third and fourth peaks higher than the first and second peaks?
- (24) Nnn--Is the first peak higher than the second, third and fourth peaks?
- (25) nnN--Is the first peak lower than the second, third and fourth peaks?
- (II) Phase Angle
- (26) P+--Does the phase angle lag above a limit at various frequency bands?
- (27) P--Does the phase angle lead above a limit at various frequency bands?
- (28) WW--Is the shape of the waveform similar to the letter "W" at various frequency bands?
- (29) PW+--Do indices 26 and 28 co-exist at various frequency bands?
- (30) PW--Do indices 27 and 28 co-exist at various frequency bands?
- (31) L--Is the phase angle too small plus is the impulse response too even?
- (32) U--Does the waveform have the shape of the letter "U" at various frequency bands?
- (33) W--Are there two or more U-shaped waves?
- (34) V--Does the waveform have a long upward slope?
- (35) Y--Is the slope of the waveform positive or negative?
- (36) X--Do indices 32 and 35 or 32 and 33 co-exist?
- (37) Z--Does the waveform have waves shaped like the letter "Z"?
- (III) Impulse Response
- (38) D1--Does the waveform have a double top plane wave resembling or ?
- (39) D2--Does the waveform have a stair steps wave resembling ?
- (40) f--Is the main response impulse negative?
- (41) M1--Does the main response impulse have a twin peak?
- (42) M2--Does the shape of the main response impulse resemble the letter "M"?
- (43) M3--Does the main response impulse have more than three peaks?
- (44) M4--Does the main response impulse have a peak that is too wide?
- (45) M5--Does the side response have a peak whose amplitude is above a limit?
- (46) M6--Is the main response impulse totally downward?
- (IV) Coherence
- (47) Q1--Is the coherence of the first peak of the power spectrum below a limit?
- (48) Q2--Is the coherence of the highest peak of the transfer function below a limit?
- (V) Amplitude Histogram
- (49) V+--Is the amplitude of lead V5 above a limit?
- (50) 2+--Is the amplitude of lead II above a limit?
- (51) V---Is the amplitude of lead V5 below a limit?
- (52) 2---Is the amplitude of lead II below a limit?
- (53) Vn+--Is the number of bundles of the column in the amplitude histogram of lead V5 above a limit?
- (54) Vn---Is the number of bundles of the column in the amplitude histogram of lead V5 below a limit?
- (55) 2n+--Is the number of bundles of the column in the amplitude histogram of lead II above a limit?
- (56) 2n---Is the number of bundkes of the column in the amplitude histogram of lead II below a limit?
- (VI) Cross Correlation
- (57) RRR--Is the amplitude of the main peak above a limit?
- (58) rrr--Is the amplitude of the main peak below a limit?
- (59) R--Is the main peak within a higher zone?
- (60) r--Is the main peak within a lower zone?
- (61) RR--Is the interval between R1 and R2 above a limit?
- (62) rr--Is the interval between R1 and R2 too short?
- (63) rR--Is the peak R1 lower than the peak R2?
- (64) R2--Is the peak R2 below a limit?
- (65) R+--Does the peak R1 shift to the right side?
- (66) R---Does the peak R2 shift to the left side?
- (67) Rw+--Is the bottom of the first positive peak below the bottom of the first negative peak, and so on for successive peaks?
- (68) Rw---Is the bottom of the first positive peak above the bottom of the first negative peak, and so on for successive peaks?
- (69) pt--Is the number of peaks whose amplitude is above a threshold between peaks R1 and R2 above a limit?
- (70) PT--Is there one or more peaks between peaks R1 and R2 higher than peak R2 above a limit?
- (71) Rn--Does R2 have a twin peak or a zigzag shape?
- (72) Rm--Is the peak R1 too wide?
- (73) Rv--Is one bend of R1 too steep in slope?
88 more elements
Dependencies are inferred from the claim text.