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US3744479A
Expired / Lapsed
US
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Synchronized ultrasonic diagnostic for internal organ function testing
Assignee: Picker Electronics Inc
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Filing: 1971-02-25
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Granted: 1973-07-10
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Expires: 1991-02-25
Abstract
Abstract A clinical monitoring system including an ultrasound system which is operated in conjunction with another physiological monitoring system, such as an electrocardiograph, for providing a composite visual presentation of both ultrasound data and other physiological data. The clinical monitoring system also includes circuitry for electrically synchronizing and for combining the ultrasound data and the other physiological data so that both sets of data are simultaneously presented and are correlated with respect to each other relative to time. The ultrasound data and the other physiological data are electrically synchronized with respect to each other and are simultaneously presented in time correlation with respect to each other.
Inventors
- 👤 W Wright
- 👤 A Stein
- 👤 A Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
A; A61; A61B; A61B8/00; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/352
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
241 words
Apparatus for analyzing the functioning of an internal organ comprising: pulse generator means for developing a train of time-spaced pulses; tranducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; first amplifier means having input circuit means for receiving signals representative of physiological information and output circuit means for amplifying said received signals; reference signal generator means having an input circuit coupled to said pulse generator means and an output circuit means for developing a reference signal upon the receipt of a time-spaced pulse from said pulse generator means; signal comparator means having an input circuit coupled to said output circuit means of said amplifier means and said reference signal means, and an output circuit means for developing a signal when a said output signal from said amplifier means reaches a predetermined value with respect to the value of a said reference signal; second amplifier means having an input circuit coupled to said output circuit means of said signal comparator means and to said circuit means, and having an output circuit means for developing a control signal; and, indicator means coupled to said output circuit means of said second amplifier means for developing an output indication having a value representative of the value of a said control signal to thereby present an indication of both ultrasonic data and other physiological data.
Claim 2
Dependent Claim
241 words
Apparatus for analyzing the functioning of an internal organ comprising: pulse generator means for developing a train of time-spaced pulses; tranducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; first amplifier means having input circuit means for receiving signals representative of physiological information and output circuit means for amplifying said received signals; reference signal generator means having an input circuit coupled to said pulse generator means and an output circuit means for developing a reference signal upon the receipt of a time-spaced pulse from said pulse generator means; signal comparator means having an input circuit coupled to said output circuit means of said amplifier means and said reference signal means, and an output circuit means for developing a signal when a said output signal from said amplifier means reaches a predetermined value with respect to the value of a said reference signal; second amplifier means having an input circuit coupled to said output circuit means of said signal comparator means and to said circuit means, and having an output circuit means for developing a control signal; and, indicator means coupled to said output circuit means of said second amplifier means for developing an output indication having a value representative of the value of a said control signal to thereby present an indication of both ultrasonic data and other physiological data.
Claim 3
Dependent Claim
34 words
An apparatus as defined in claim 1 wherein said first amplifier includes an electrocardiograph amplifier having an input circuit, and a pair of sensing electrodes coupled to the input circuit of the electrocardiograph amplifier.
Claim 4
Dependent Claim
51 words
An apparatus as defined in claim 2 including signal generating means coupled to said input circuit of said signal comparator means for developing a signal having a value representative of a preselected position of the other physiological data with respect to the position of the ultrasonic data on the indicator means.
Claim 5
Dependent Claim
73 words
An apparatus as defined in claim 1 wherein said indicator means includes a cathode ray tube; horizontal sweep generator means for deflecting a beam of electrons along a horizontal line of travel across the face of said cathode ray tube at a predetermined rate of speed; and, vertical sweep generator means for deflecting a said beam of electrons in incremental steps along a vertical line of travel at a predetermined rate of speed.
Claim 6
Dependent Claim
47 words
An apparatus as defined in claim 4 wherein said indicator means includes circuit means coupled between said pulse generator means and said horizontal sweep generator means for initiating a deflection of a said beam of electrons upon receipt of a time-spaced pulse from said pulse generator means.
Claim 7
Dependent Claim
57 words
An apparatus as defined in claim 5 wherein said second amplifier takes the form of a video amplifier, said cathode ray tube includes an intensity control means, and said video amplifier is coupled to said intensity control means to thereby vary the intensity of said cathode ray tube in accordance with the value of said control signal.
Claim 8
Dependent Claim
100 words
An apparatus as defined in claim 6 wherein said reference signal generator means takes the form of a ramp function generator means for, upon receipt of a said time-spaced pulse, generating a signal which varies as a ramp function with respect to time. 8 An apparatus as defined in claim 7 including signal generating means Coupled to said input circuit of said signal comparator means for developing a signal having a value representative of a preselected depth to be evaluated and having means for varying the value of a said developed signal in order to vary a said preselected depth.
Claim 9
Dependent Claim
34 words
An apparatus as defined in claim 7 wherein said first amplifier includes an electrocardiograph amplifier having an input circuit, and a pair of sensing electrodes coupled to the input circuit of the electrocardiograph amplifier.
Claim 10
Independent Claim
212 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of physiological information; applying said signals representative of physiological information to the input circuit of a second amplifier; amplifying said physiological representative signals; applying said amplified physiological representative signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, presenting an output display with said indicator means when said control signal attains a predetermined value.
Claim 11
Independent Claim
212 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of physiological information; applying said signals representative of physiological information to the input circuit of a second amplifier; amplifying said physiological representative signals; applying said amplified physiological representative signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, presenting an output display with said indicator means when said control signal attains a predetermined value.
Claim 12
Independent Claim
209 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of electrocardiograph data; applying signals representative of electrocardiograph data to the input circuit of a second amplifier; amplifying said electrocardiograph signals; applying said amplified electrocardiograph signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, presenting an output display with said indicator means when said control signal attains a predetermined value.
Claim 13
Independent Claim
209 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of electrocardiograph data; applying signals representative of electrocardiograph data to the input circuit of a second amplifier; amplifying said electrocardiograph signals; applying said amplified electrocardiograph signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, presenting an output display with said indicator means when said control signal attains a predetermined value.
Claim 14
Dependent Claim
231 words
An ultrasound electrocardiograph system comprising: pulse generator means for developing a train of time-spaced pulses; transducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; AN electrocardiograph amplifier having input circuit means adapted to be coupled to sensing electrodes and output circuit means; reference signal generator means having an input circuit coupled to said pulse generator means and an output circuit means for developing a reference signal upon the receipt of a time-spaced pulse from said pulse generator means; signal comparator means having an input circuit coupled to said output circuit means of said electrocardiograph amplifier and to said reference signal means, and an output circuit means for developing a signal when a said output signal from said electrocardiograph amplifier means attains a predetermined value with respect to the value of a said reference signal; amplifier means having an input circuit coupled to said output circuit means of said signal comparator means and to said converter circuit means, and having an output circuit means for developing a control signal; and, indicator means coupled to said output circuit means of said amplifier means for developing an output indication having a value representative of the value of a said control signal to thereby present an indication of both ultrasonic data and electrocardiograph data.
Claim 15
Dependent Claim
231 words
An ultrasound electrocardiograph system comprising: pulse generator means for developing a train of time-spaced pulses; transducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; AN electrocardiograph amplifier having input circuit means adapted to be coupled to sensing electrodes and output circuit means; reference signal generator means having an input circuit coupled to said pulse generator means and an output circuit means for developing a reference signal upon the receipt of a time-spaced pulse from said pulse generator means; signal comparator means having an input circuit coupled to said output circuit means of said electrocardiograph amplifier and to said reference signal means, and an output circuit means for developing a signal when a said output signal from said electrocardiograph amplifier means attains a predetermined value with respect to the value of a said reference signal; amplifier means having an input circuit coupled to said output circuit means of said signal comparator means and to said converter circuit means, and having an output circuit means for developing a control signal; and, indicator means coupled to said output circuit means of said amplifier means for developing an output indication having a value representative of the value of a said control signal to thereby present an indication of both ultrasonic data and electrocardiograph data.
Claim 16
Dependent Claim
73 words
An apparatus as defined in claim 13 wherein said indicator means includes a cathode ray tube; horizontal sweep generator means for deflecting a beam of electrons along a horizontal line of travel across the face of said cathode ray tube at a predetermined rate of speed; and, vertical sweep generator means for deflecting a said beam of electrons in incremental steps along a vertical line of travel at a predetermined rate of speed.
Claim 17
Dependent Claim
47 words
An apparatus as defined in claim 13 wherein said indicator means includes circuit means coupled between said pulse generator means and said horizontal sweep generator means for initiating a deflection of a said beam of electrons upon receipt of a time-spaced pulse from said pulse generator means.
Claim 18
Dependent Claim
57 words
An apparatus as defined in claim 14 wherein said second amplifier takes the form of a video amplifier, said cathode ray tube includes an intensity control means, and said video amplifier is coupled to said intensity control means to thereby vary the intensity of said cathode ray tube in accordance with the value of said control signal.
Claim 19
Dependent Claim
161 words
Apparatus for analyzing the functioning of an internal organ comprising: pulse generator means for developing a train of time-spaced pulses; transducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; first signal processing circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; second signal processing circuit means for developing output signals representative of physiological information; signal combining circuit means having input circuit means for receiving electrical signals developed by said first signal processing circuit means and output signals developed by said second signal processing circuit means, and output circuit means for developing control signals representative of a composite of the values of said electrical signals and output signals; and, indicator means coupled to said output circuit means of said signal combining circuit means for developing an output indication representative of the value of said composite control signals to thereby present an indication of both ultrasonic data and other physiological data.
Claim 20
Dependent Claim
161 words
Apparatus for analyzing the functioning of an internal organ comprising: pulse generator means for developing a train of time-spaced pulses; transducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; first signal processing circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; second signal processing circuit means for developing output signals representative of physiological information; signal combining circuit means having input circuit means for receiving electrical signals developed by said first signal processing circuit means and output signals developed by said second signal processing circuit means, and output circuit means for developing control signals representative of a composite of the values of said electrical signals and output signals; and, indicator means coupled to said output circuit means of said signal combining circuit means for developing an output indication representative of the value of said composite control signals to thereby present an indication of both ultrasonic data and other physiological data.
Claim 21
Dependent Claim
43 words
An apparatus as defined in claim 16 wherein said signal combining circuit means comprises a video amplifier having a first input circuit coupled to said first signal processing circuit means, and a second input circuit coupled to said second signal processing circuit means.
Claim 22
Dependent Claim
37 words
An apparatus as defined in claim 17 wherein said second signal processing circuit means includes an electrocardiograph amplifier having an input circuit, and a pair of sensing electrodes coupled to the input circuit of the electrocardiograph amplifier.
Claim 23
Dependent Claim
49 words
An apparatus as defined in claim 18 including signal generating means coupled to said second signal processing circuit means for developing a signal having a value representative of a preselected position of the other physiological data with respect to the position of the ultrasonic data on the indicator means.
Claim 24
Dependent Claim
73 words
An apparatus as defined in claim 19 wherein said indicator means includes a cathode ray tube; horizontal sweep generator means for deflecting a beam of electrons along a horizontal line of travel across the face of said cathode ray tube at a predetermined rate of speed; and, vertical sweep generator means for deflecting a said beam of electrons in incremental steps along a vertical line of travel at a predetermined rate of speed.
Claim 25
Dependent Claim
47 words
An apparatus as defined in claim 20 wherein said indicator means includes circuit means coupled between said pulse generator means and said horizontal sweep generator means for initiating a deflection of a said beam of electrons upon receipt of a time-spaced pulse from said pulse generator means.
Claim 26
Dependent Claim
156 words
Apparatus for analyzing the functioning of an internal organ comprising: pulse generator means for developing a train of time-spaced pulses; transducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; first signal processing circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; second signal processing circuit means for developing output signals representative of electrocardiograph data; video amplifier means having input circuit means for receiving electrical signals developed by said first signal processing circuit means and output signals developed by said second signal processing circuit means, and output circuit means for developing control signals representative of both the values of said electrical signals and output signals; and, indicator means coupled to said output circuit means of said signal combining circuit means for developing an output indication representative of the value of said control signals to thereby present an indication of both ultrasonic data and electrocardiograph data.
Claim 27
Dependent Claim
156 words
Apparatus for analyzing the functioning of an internal organ comprising: pulse generator means for developing a train of time-spaced pulses; transducer means coupled to said pulse generator means for emitting and receiving ultrasonic waves; first signal processing circuit means coupled to said transducer means for converting the received ultrasonic waves into electrical signals; second signal processing circuit means for developing output signals representative of electrocardiograph data; video amplifier means having input circuit means for receiving electrical signals developed by said first signal processing circuit means and output signals developed by said second signal processing circuit means, and output circuit means for developing control signals representative of both the values of said electrical signals and output signals; and, indicator means coupled to said output circuit means of said signal combining circuit means for developing an output indication representative of the value of said control signals to thereby present an indication of both ultrasonic data and electrocardiograph data.
Claim 28
Dependent Claim
49 words
An apparatus as defined in claim 22 including signal generating means coupled to said second signal processing circuit means for developing a signal having a value representative of a preselected position of the other physiological data with respect to the position of the ultrasonic data on the indicator means.
Claim 29
Dependent Claim
73 words
An apparatus as defined in claim 23 wherein said indicator means includes a cathode ray tube; horizontal sweep generator means for deflecting a beam of electrons along a horizontal line of travel across the face of said cathode ray tube at a predetermined rate of speed; and, vertical sweep generator means for deflecting a said beam of electrons in incremental steps along a vertical line of travel at a predetermined rate of speed.
Claim 30
Dependent Claim
47 words
An apparatus as defined in claim 24 wherein said indicator means includes circuit means coupled between said pulse generator means and said horizontal sweep generator means for initiating a deflection of a said beam of electrons upon receipt of a time-spaced pulse from said pulse generator means.
Claim 31
Independent Claim
215 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of physiological information; applying said signals representative of physiological information to the input circuit of a second amplifier; amplifying said physiological Representative signals; applying said amplified physiological representative signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, varying the intensity of a cathode ray tube with said control signal in order to present an output diaplay.
Claim 32
Independent Claim
215 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of physiological information; applying said signals representative of physiological information to the input circuit of a second amplifier; amplifying said physiological Representative signals; applying said amplified physiological representative signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, varying the intensity of a cathode ray tube with said control signal in order to present an output diaplay.
Claim 33
Independent Claim
217 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of physiological information; applying said signals representative of physiological information to the input circuit of a second amplifier; amplifying said physiological representative signals; applying said amplified physiological representative signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means and, unblanking a beam of electrons in a cathode ray tube with said control signal in order to present an output display.
Claim 34
Independent Claim
217 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of physiological information; applying said signals representative of physiological information to the input circuit of a second amplifier; amplifying said physiological representative signals; applying said amplified physiological representative signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means and, unblanking a beam of electrons in a cathode ray tube with said control signal in order to present an output display.
Claim 35
Independent Claim
212 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of electrocardiograph data; applying signals representative of electrocardiograph data to the input circuit of a second amplifier; amplifying said electrocardiograph signals; applying said amplified electrocardiograph signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, varying the intensity of a cathode ray tube with said control signal in order to present an output display.
Claim 36
Independent Claim
212 words
A method of diagnosing the functioning of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of electrocardiograph data; applying signals representative of electrocardiograph data to the input circuit of a second amplifier; amplifying said electrocardiograph signals; applying said amplified electrocardiograph signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means; and, varying the intensity of a cathode ray tube with said control signal in order to present an output display.
Claim 37
Independent Claim
214 words
A method of diagnosing the functioniNg of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of electrocardiograph data; applying signals representative of electrocardiograph data to the input circuit of a second amplifier; amplifying said electrocardiograph signals; applying said amplified electrocardiograph signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means and, unblanking a beam of electrons in the cathode ray tube with said control signal in order to present an output display.
Claim 38
Independent Claim
214 words
A method of diagnosing the functioniNg of an internal organ comprising the steps of: generating a train of time-spaced pulses; applying said train of pulses to a transducer; generating an ultrasonic wave with said transducer; directing the ultrasonic wave toward an object under examination; receiving from said object a reflected ultrasonic wave with a transducer; converting said received ultrasonic wave into electrical signals; applying said electrical signals to an input circuit of a first amplifier; receiving signals representative of electrocardiograph data; applying signals representative of electrocardiograph data to the input circuit of a second amplifier; amplifying said electrocardiograph signals; applying said amplified electrocardiograph signals to the input circuit of a signal comparator means; generating a reference signal; electrically comparing the value of said amplified signals with said reference signal; developing an output signal with said signal comparator means when said amplified signals attain a predetermined value relative to said reference signal; applying said output signal developed by said comparator means to said first amplifier; developing a control signal having a value representative of said output signal and said electrical signals with said first amplifier; applying said control signal to said indicator means and, unblanking a beam of electrons in the cathode ray tube with said control signal in order to present an output display.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |