Electrocardiography system
First Claim
1. An electrocardiography system for displaying, in accordance with an operator input, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said system comprising:
- selector means responsive to said operator input for selecting a corresponding group of said pickup leads;
processing means for processing said ECG data from said corresponding group of said pickup leads to develop respective processed outputs;
display means including a plurality of display channels for providing each one of said respective processed outputs on a corresponding one of said display channels in accordance with said operator input; and
recording means including a plurality of recording channels for recording each said respective ECG data on a corresponding one of said recording channels in accordance with said operator input;
wherein each said group comprises a predetermined number of said pickup leads, and wherein said plurality of display channels includes a given number of channels, equal in number to said predetermined number of said pickup leads, a spare channel, and operator actuator means for selecting one of said given number of channels and for actuating said spare channel to record thereon said respective ECG data from said selected one of said given number of channels;
said system including switch means connected between said selector means and said display means, on the one hand, and said recording means, on the other hand, said switch means being responsive to said operator input for making a selection between said respective ECG data from each said pickup lead, said displayed respective ECG data from said display means, and said respective ECG data from said selected one of said given number of said channels as recorded on said spare channel, and for providing said selection to said recording means.
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Accused Products
Abstract
An improved electrocardiography system displays and records electrocardiograph (ECG) signals provided on multiple pickup leads attached to a patient. The system has the capability of selectively displaying standard preprogrammed lead configurations or lead groups, and provides the operator with the additional capability of programming selected leads from various groups to form a "monitor group". Selected ECG signals are routed to a four-channel oscilloscope and a three-channel strip-chart recorder, the system providing the operator with a "freeze" capability such that a signal appearing on one of the oscilloscope channels may be displayed in a stationary state on the fourth oscilloscope channel, and subsequently printed out on the strip chart recorder. The system further provides an "auto lead" capability for fully automated successive recording of test data from leads in successively accessed conventional lead groups, and further provides an "auto cycle" mode of operation for fully automated repetitive recording of test data from selected leads for operator-designated recording times and at operator-designated time intervals.
22 Citations
43 Claims
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1. An electrocardiography system for displaying, in accordance with an operator input, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said system comprising:
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selector means responsive to said operator input for selecting a corresponding group of said pickup leads; processing means for processing said ECG data from said corresponding group of said pickup leads to develop respective processed outputs; display means including a plurality of display channels for providing each one of said respective processed outputs on a corresponding one of said display channels in accordance with said operator input; and recording means including a plurality of recording channels for recording each said respective ECG data on a corresponding one of said recording channels in accordance with said operator input; wherein each said group comprises a predetermined number of said pickup leads, and wherein said plurality of display channels includes a given number of channels, equal in number to said predetermined number of said pickup leads, a spare channel, and operator actuator means for selecting one of said given number of channels and for actuating said spare channel to record thereon said respective ECG data from said selected one of said given number of channels; said system including switch means connected between said selector means and said display means, on the one hand, and said recording means, on the other hand, said switch means being responsive to said operator input for making a selection between said respective ECG data from each said pickup lead, said displayed respective ECG data from said display means, and said respective ECG data from said selected one of said given number of said channels as recorded on said spare channel, and for providing said selection to said recording means. - View Dependent Claims (2, 3, 4, 5)
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6. An electrocardiography system for displaying, in accordance with an operator input, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said system comprising:
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selector means responsive to said operator input for selecting a corresponding group of said pickup leads, and for providing respective ECG data from each said pickup lead in said corresponding group of said pickup leads; display means including a plurality of display channels of a number equal to at least said number of pickup leads in said corresponding group of pickup leads for displaying each said respective ECG data on a corresponding one of said display channels in accordance with said operator input; and recording means including a plurality of recording channels for recording each said respective ECG data on a corresponding one of said recording channels in accordance with said operator input; wherein each said group comprises a predetermined number of said pickup leads, and wherein said plurality of display channels includes a given number of channels, equal in number to said predetermined number of said pickup leads, a spare channel, and operator actuator means for selecting one of said given number of channels and for actuating said spare channel to record thereon said respective ECG data from said selected one of said given number of channels; said system including switch means connected between said selector means and said display means, on the one hand, and said recording means, on the other hand, said switch means being responsive to said operator input for making a selection between said respective ECG data from each said pickup lead, said displayed respective ECG data from said display means, and said respective ECG data from said selected one of said given number of said channels as recorded on said spare channel, and for providing said selection to sid recording means. - View Dependent Claims (7)
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8. An electrocardiography system for displaying, in accordance with an operator input provided via control console switches, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from a group of said pickup leads designated by said operator input to provide a lead switching output; control means for processing said lead switching output to derive respective processed outputs; and display means including a plurality of display channels for displaying, as an output thereof, each one of said respective processed outputs on a corresponding one of said display channels in accordance with said operator input; wherein said lead switching means comprises a lead switching unit connected to said plurality of pickup leads, and a plurality of amplifiers, one for each pickup lead in said group of pickup leads designated by said operator input, each of said plurality of amplifiers amplifying said ECG data from a respective lead in said group of pickup leads designated by said operator input so as to provide corresponding amplified outputs comprising said lead switching output; wherein each of said plurality of amplifiers comprises a differential amplifier for receiving and amplifying a corresponding one of said received, selected and switchably routed ECG data from a corresponding one of said pickup leads of said group of said pickup leads designated by said operator input, said differential amplifier having two inputs and an output, threshold circuit means connected to said output of said differential amplifier for detecting an overvoltage in said output of said differential amplifier, and analog switch means responsive to detection by said threshold circuit means of said overvoltage for grounding said inputs of said differential amplifier until said overvoltage subsides. - View Dependent Claims (9)
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10. An electrocardiography system for displaying, in accordance with an operator input provided via control console switches, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from a group of said pickup leads designated by said operator input to provide a lead switching output; control means for processing said lead switching output to derive respective processed outputs; and display means including a plurality of display channels for displaying, as an output thereof, each one of said respective processed outputs on a corresponding one of said display channels in accordance with said operator input; wherein said lead switching means comprises a lead switching unit connected to said plurality of pickup leads, and a plurality of amplifiers, one for each pickup lead in said group of pickup leads designated by said operator input, each of said plurality of amplifiers amplifying said ECG data from a respective lead in said group of pickup leads designated by said operator input so as to provide corresponding amplified outputs comprising said lead switching output; wherein each of said plurality of amplifiers comprises an analog switch for normally passing said ECG data to the output of said each of said plurality of amplifiers, and responsive to a control signal from said control means for blocking said ECG data and for passing a calibration signal to the output of said each of said plurality of amplifiers. - View Dependent Claims (11, 21, 22)
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12. An electrocardiography system for displaying, in accordance with an operator input provided via control console switches, electrocardiograph data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from a group of said pickup leads designated by said operator input to provide a lead switching output; control means for processing said lead switching output to derive respective processed outputs; and display means including a plurality of display channels for displaying, as an output thereof, each one of said respective processed outputs on a corresponding one of said display channels in accordance with said operator input; wherein said lead switching means comprises a lead switching unit connected to said plurality of pickup leads, and a plurality of amplifiers, one for each pickup lead in said group of pickup leads designated by said operator input, each of said plurality of amplifiers amplifying said ECG data from a respective lead in said group of pickup leads designated by said operator input so as to provide corresponding amplified outputs comprising said lead switching output; wherein said control means comprises; gain adjust means for receiving and attenuating said lead switching output to develop corresponding attenuated outputs, said corresponding attenuated outputs being provided to respective ones of said plurality of amplifiers in said lead switching means; said respective ones of said plurality of amplifiers each comprising a first differential amplifier for filtering in accordance with a first frequency to provide a first filtered output, and a second differential amplifier for filtering in accordance with a second frequency to provide a second filtered output; said control means further comprising switch means receiving said first and second filtered outputs and being responsive to said operator input for selectively providing one of said first and second filtered outputs as an output of said switch means; said output of said switch means comprising said respective processed outputs of said control means; said control means further comprising direct/delay switching means for receiving said output of said switch means and said output of said display means, and being responsive to said operator input for selectively providing at least one of said output of said switch means and said output of said display means as a further plurality of respective processed outputs of said control means for recording. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 23)
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24. An electrocardiography system for recording, in accordance with an operator input provided via control console switches, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from a group of said pickup leads designated by said operator input to provide a lead switching output; control means for processing said lead switching output to derive respective processed outputs; and recording means including a plurality of recording channels for recording, as an output thereof, each one of said respective processed outputs on a corresponding one of said recording channels in accordance with said operator input, said control means receiving said operator input, said operator input comprising an auto cycle selection signal indicating operator selection of an auto cycle mode of operation and a selected delay time between recordings, said operator input also including a selected recording time in said auto cycle mode of operation, said control means including a processor responsive to said auto cycle selection signal for successively issuing a reset signal and a start signal, said control means including a timer/counter responsive to said reset signal for being placed in a reset state, and being responsive to said start signal so as to count through a first time interval corresponding to said recording time so as to generate a first output, and said timer/counter counting through a second time interval corresponding to said delay time between recordings so as to issue a second output. - View Dependent Claims (25)
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26. An electrocardiography system for recording, in accordance with an operator input provided via control console switches, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from said group of said pickup leads designated by said operator input to provide a lead switching output; control means responsive to said operator input for processing said lead switching output to derive respective processed outputs; and recording means including a plurality of recording channels for recording each one of said respective processed outputs on a corresponding one of said recording channels in accordance with said operator input; wherein said lead switching means comprises a lead switching unit connected to said plurality of pickup leads, and a plurality of amplifiers, one for each pickup lead in said group of pickup leads designated by said operator input, each of said plurality of amplifiers amplifying said ECG data from a respective lead in said group of pickup leads designated by said operator input so as to provide corresponding amplified outputs comprising said lead switching output; wherein each of said plurality of amplifiers comprises a differential amplifier for receiving and amplifying a corresponding one of said received, selected and switchably routed ECG data from a corresponding one of said pickup leads of said group of said pickup leads designated by said operator input, said differential amplifier having two inputs and an output, threshold circuit means connected to said output of said differential amplifier for detecting an overvoltage in said output of said differential amplifier, and analog switch means responsive to detection by said threshold circuit means of said overvoltage for grounding said inputs of said differential amplifier until said overvoltage subsides. - View Dependent Claims (27, 40)
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28. An electrocardiography system for recording, in accordance with an operator input provided via control console switches, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from said group of said pickup leads designated by said operator input to provide a lead switching output; control means responsive to said operator input for processing said lead switching output to derive respective processed outputs; and recording means including a plurality of recording channels for recording each one of said respective processed outputs on a corresponding one of said recording channels in accordance with said operator input; wherein said lead switching means comprises a lead switching unit connected to said plurality of pickup leads, and a plurality of amplifiers, one for each pickup lead in said group of pickup leads designated by said operator input, each of said plurality of amplifiers amplifying said ECG data from a respective lead in said group of pickup leads designated by said operator input so as to provide corresponding amplified outputs comprising said lead switching output; wherein each of said plurality of amplifiers comprises an analog switch for normally passing said ECG data to the output of said each of said plurality of amplifiers, and responsive to a control signal from said control means for blocking said ECG data and for passing a calibration signal to the output of said each of said plurality of amplifiers. - View Dependent Claims (29)
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30. An electrocardiography system for recording, in accordance with an operator input provided via control console switches, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from said group of said pickup leads designated by said operator input to provide a lead switching output; control means responsive to said operator input for processing said lead switching output to derive respective processed outputs; and recording means including a plurality of recording channels for recording each one of said respective processed outputs on a corresponding one of said recording channels in accordance with said operator input; wherein said lead switching means comprises a lead switching unit connected to said plurality of pickup leads, and a plurality of amplifiers, one for each pickup lead in said group of pickup leads designated by said operator input, each of said plurality of amplifiers amplifying said ECG data from a respective lead in said group of pickup leads designated by said operator input so as to provide corresponding amplified outputs comprising said lead switching output; said system further comprising display means for displaying, as an output thereof, said each one of said respective processed outputs, and wherein said control means comprises; gain adjust means for receiving and attenuating said lead switching output to develop corresponding attenuated outputs, said corresponding attenuated outputs being provided to respective ones of said plurality of amplifiers in said lead switching means; said respective ones of said plurality of amplifiers each comprising a first differential amplifier for filtering in accordance with a first frequency to provide a first filtered output, and a second differential amplifier for filtering in accordance with a second frequency to provide a second filtered output; said control means further comprising switch means receiving said first and second filtered outputs and being responsive to said operator input for selectively providing one of said first and second gain filtered outputs as an output of said switch means; said output of said switch means comprising said respective processed outputs of said control means; said control means further comprising direct/delay switching means for receiving said output of said switch means and said output of said display means, and being responsive to said operator input for selectively providing at least one of said output of said switch means and said output of said display means as a further plurality of respective processed outputs of said control means for recording. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 41)
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42. An electrocardiography system for recording, in accordance with an operator input provided via control console switches, electrocardiograph (ECG) data provided in a plurality of pickup leads, wherein said pickup leads in said plurality of pickup leads are divided into groups, said operator input designating a group of said pickup leads, said system comprising:
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lead switching means for receiving, selecting and switchably routing said ECG data from said group of said pickup leads designated by said operator input to provide a lead switching output; control means responsive to said operator input for processing said lead switching output to derive respective processed outputs; and recording means including a plurality of recording channels for recording each one of said respective processed outputs on a corresponding one of said recording channels in accordance with said operator input, said control means receiving said operator input, said operator input comprising an auto cycle selection signal indicating operator selection of an auto cycle mode of operation and a selected delay time between recordings, said operator input also including a selected recording time in said auto cycle mode of operation, said control means including a processor responsive to said auto cycle selection signal for successively issuing a reset signal and a start signal, said control means including a timer/counter responsive to said reset signal for being placed in a reset state, and being responsive to said start signal so as to count through a first time interval corresponding to said recording time so as to generate a first output, and said timer/counter counting through a second time interval corresponding to said delay time between recordings so as to issue a second output. - View Dependent Claims (43)
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Specification