US3978856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart beat waveform monitoring apparatus
Assignee: Individual
•
Filing: 1975-03-20
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Granted: 1976-09-07
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Expires: 1995-03-20
Abstract
Abstract Disclosed is a heart beat waveform monitoring apparatus for electronically analyzing the heart beat of an individual to recognize the unique characteristics of pre-ventricular contractions and other abnormalities of the heart beat rhythm, The device can detect and warn of the presence of tachycardia as well as prevent false indications of a "heart attack" due to noise. Logic circuits are provided to detect the characteristics of the abnormalities and to actuate an indicator.
Inventors
- 👤 Walter A. Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:16
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/364; Y; Y10; Y10S; Y10S128/00; Y10S128/901
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
Heart beat waveform monitoring apparatus for detecting heart beat waveforms by transducers secured to a patient and for analyzing the waveforms for abnormalities, the apparatus comprising: first logic means for sensing presence of a QR rise in as heart beat waveform and producing a pulse responsive thereto; second logic means for sensing presnce of an unusually wide QRS heart beat waveform and producing a pulse responsive thereto; first AND gate means for receiving pulse signals from said first and said second logic means and passing an output pulse upon coincidence of said signals; other logic means for detecting absence of a heart beat waveform following a first heart beat waveform and producing an output pulse responsive thereto; second AND gate means for receiving output pulse signals from said first AND gate means and said other logic means; and indicator means connected to said second AND gate means to be activated upon receiving a signal from said second AND gate means.
Claim 2
Dependent Claim
160 words
Heart beat waveform monitoring apparatus for detecting heart beat waveforms by transducers secured to a patient and for analyzing the waveforms for abnormalities, the apparatus comprising: first logic means for sensing presence of a QR rise in as heart beat waveform and producing a pulse responsive thereto; second logic means for sensing presnce of an unusually wide QRS heart beat waveform and producing a pulse responsive thereto; first AND gate means for receiving pulse signals from said first and said second logic means and passing an output pulse upon coincidence of said signals; other logic means for detecting absence of a heart beat waveform following a first heart beat waveform and producing an output pulse responsive thereto; second AND gate means for receiving output pulse signals from said first AND gate means and said other logic means; and indicator means connected to said second AND gate means to be activated upon receiving a signal from said second AND gate means.
Claim 3
Dependent Claim
42 words
Heart beat waveform monitoring apparatus as in claim 1 wherein said first logic means is a rate logic circuit for receiving and analyzing a heart beat waveform and passing an output signal when a predetermined level of the QR rise is exceeded.
Claim 4
Dependent Claim
49 words
Apparatus as in claim 1 wherein output signals of said first logic means and said second logic means are stretched for possible coincidence at said first AND gate with a later output signal from said other logic means for causing passing of an output signal from said AND gate.
Claim 5
Dependent Claim
116 words
Heart beat waveform monitoring apparatus for detecting heart beat waveforms by transducers secured to a patient and for analyzing the waveforms for abnormalities, the apparatus comprising: first logic means for sensing the presence of a QR rise in a heart beat waveform and producing a signal responsive thereto; second logic means for sensing the presence of an unusually wide QRS heart beat waveform and producing a signal responsive thereto; third logic means for sensing the absence of a pulse within a predetermined time following said signal generated by said first logic means, and passing a signal; and And gate means for receiving said signals and passing an output signal when said signals are received in coincidence.
Claim 6
Dependent Claim
116 words
Heart beat waveform monitoring apparatus for detecting heart beat waveforms by transducers secured to a patient and for analyzing the waveforms for abnormalities, the apparatus comprising: first logic means for sensing the presence of a QR rise in a heart beat waveform and producing a signal responsive thereto; second logic means for sensing the presence of an unusually wide QRS heart beat waveform and producing a signal responsive thereto; third logic means for sensing the absence of a pulse within a predetermined time following said signal generated by said first logic means, and passing a signal; and And gate means for receiving said signals and passing an output signal when said signals are received in coincidence.
Claim 7
Dependent Claim
78 words
Apparatus as in claim 4 wherein said output signal of said first logic means is generated when a predetermined input signal strength is exceeded, and said output signal of said second logic means is generated when a wider than usual signal is received; and including means stretching said output signals for possible coincidence at said AND gate with a later output signal from said third logic means for causing passing of an output signal from said AND gate.
Claim 8
Dependent Claim
34 words
Apparatus as in claim 4 including a fourth logic means for sensing a negative component in a heart beat waveform and passing an output signal to said AND gate when such component is detected.
Claim 9
Dependent Claim
37 words
Apparatus as in claim 4 including a second AND gate means for receiving said signals from said first logic means and said second logic means and passing an output signal when said signals are received in coincidence.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |