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US4686999A
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Multi-channel ventilation monitor and method
Assignee: INTERNATIONAL ADAPTIVE MONITORS Inc
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Filing: 1985-04-10
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Granted: 1987-08-18
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Expires: 2005-04-10
Abstract
Abstract The ventilation monitor of this invention includes a plurality of discrete sensors and a plurality of independent channels for processing the input signals from each of the discrete sensors. The principle category of sensor used in conjunction with this ventilation monitor is capable of the reception of information associated with breathing and cardiovascular movement. A second category of the sensor used in conjunction with this ventilation monitor is capable of the reception of audible sounds associated with breathing. Each of the individual input signals from these sensors is initially verified as being indicative of the sensation being monitored and, thereafter, compared in real time with one another and criteria stored within a microprocessor. The purpose of the comparison is to verify a normal breathing pattern and signal an alarm when the breathing pattern is abnormal. The ventilation monitor is also provided with means to dynamically adjust the gain and frequency response of each channel to accommodate changes in the monitored subject's position and physiological states.
Inventors
- 👤 Leon T. Snyder
- 👤 Frank A. Scarfone
- 👤 James L. Reuss
- 👤 George V. Campen
- 👤 George H. Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/0816; G; G16; G16H; G16H20/00; G16H20/40; G16H40/00; G16H40/60; G16H40/63; G16Z; G16Z99/00; A61B2560/00; A61B2560/04; A61B2560/0456
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
219 words
A multi-channel ventilation monitor for real-time monitoring of multiple physilogical activities associated with respiration of a monitored subject, involving comparison of a plurality of discrete data signals indicative of each such activity, said monitor comprising, in combination: (a) a plurality of sensors for detection of discrete physiological activity indicative of breathing activity, each of said sensed physilogical activity being converted by a transducer to data signals which are characteristic of the sensed physiological activity; (b) a plurality of discrete information processing channels for processing of the physiological data signal from each sensor, each such physiological data signals being processed in a separate channel; (c) a signal processing means for each such channel for verifying the quality of each such signal; (d) means for dynamic adjustment of the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physilogical activity; (e) means for comparison of the wave form of each such signal to certain standards, including wave forms of a sensed physilogical activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (f) means for generation of an output signal to indicate abnormal physilogical activity associated with respiration.
Claim 2
Dependent Claim
219 words
A multi-channel ventilation monitor for real-time monitoring of multiple physilogical activities associated with respiration of a monitored subject, involving comparison of a plurality of discrete data signals indicative of each such activity, said monitor comprising, in combination: (a) a plurality of sensors for detection of discrete physiological activity indicative of breathing activity, each of said sensed physilogical activity being converted by a transducer to data signals which are characteristic of the sensed physiological activity; (b) a plurality of discrete information processing channels for processing of the physiological data signal from each sensor, each such physiological data signals being processed in a separate channel; (c) a signal processing means for each such channel for verifying the quality of each such signal; (d) means for dynamic adjustment of the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physilogical activity; (e) means for comparison of the wave form of each such signal to certain standards, including wave forms of a sensed physilogical activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (f) means for generation of an output signal to indicate abnormal physilogical activity associated with respiration.
Claim 3
Dependent Claim
29 words
The monitor of claim 1, wherein the sensors include a motion detector, contained within a mattress, and an acoustic sensor for detection of audible sounds indicative of breathing activity.
Claim 4
Dependent Claim
35 words
The monitor of claim 1, wherein the adjustment in the gain of the data signal for each of the sensed physiological activities is in response to changes in the level of the sensed physiological activity.
Claim 5
Dependent Claim
51 words
The monitor of claim 1, wherein the comparison of the wave form of the signal data to wave forms which are stored in a data base enables the monitor to effectively differentiate between a data signal which is indicative of a sensed physiological activity and a data signal which is artifact.
Claim 6
Dependent Claim
43 words
The monitor of claim 1, further including: (a) means for assignment of priorities among the various perceived abnormal activity states; and (b) means for arbitration between the various abnormal activity states, based upon assignment of priorities, prior to the initiation of an alarm.
Claim 7
Dependent Claim
240 words
A multi-channel ventilation monitor for real-time monitoring of multiple physiological activities associated with respiratory and cardiovascular movement of a monitored subject, involving comparison of a plurality of discrete data signals indicative of each such activity, said monitor comprising, in combination: (a) a plurality of sensors, at least one of which being provided for detection of movement indicative of respiratory activity and for detection of movement indicative of cardiovascular activity, each of said sensed physiological activity being converted by a transducer to data signals which are characteristic of each of the sensed physiological activity; (b) a plurality of discrete information processing channels for processing the physiological data signals from each sensor, each such physiological data signals being processed in a separate channel; (c) a signal processing means for each such channel for verifying the quality of each such signal; (d) means for dynamic adjustment of the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physiological activity; and (e) means for comparison of the wave form of each such signal to certain standards, including wave forms of a sensed physiological activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (f) means for generation of an output signal indicative of abnormal movement associated with breathing and/or cardiovascular activity.
Claim 8
Dependent Claim
240 words
A multi-channel ventilation monitor for real-time monitoring of multiple physiological activities associated with respiratory and cardiovascular movement of a monitored subject, involving comparison of a plurality of discrete data signals indicative of each such activity, said monitor comprising, in combination: (a) a plurality of sensors, at least one of which being provided for detection of movement indicative of respiratory activity and for detection of movement indicative of cardiovascular activity, each of said sensed physiological activity being converted by a transducer to data signals which are characteristic of each of the sensed physiological activity; (b) a plurality of discrete information processing channels for processing the physiological data signals from each sensor, each such physiological data signals being processed in a separate channel; (c) a signal processing means for each such channel for verifying the quality of each such signal; (d) means for dynamic adjustment of the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physiological activity; and (e) means for comparison of the wave form of each such signal to certain standards, including wave forms of a sensed physiological activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (f) means for generation of an output signal indicative of abnormal movement associated with breathing and/or cardiovascular activity.
Claim 9
Dependent Claim
29 words
The monitor of claim 6, wherein the sensors include a motion detector, contained within a mattress, and an acoustic sensor for detection of audible sounds indicative of breathing activity.
Claim 10
Dependent Claim
35 words
The monitor of claim 6, wherein the adjustment in the gain of the data signal for each of the sensed physiological activities is in response to changes in the level of the sensed physiological activity.
Claim 11
Dependent Claim
51 words
The monitor of claim 6, wherein the comparison of the wave form of the signal data to wave forms which are stored in a data base enables the monitor to effectively differentiate between a data signal which is indicative of a sensed physiological activity and a data signal which is artifact.
Claim 12
Dependent Claim
227 words
A multi-channel ventilation monitor for real-time monitoring of multiple physiological activities indicative of respiration by measurement of the immediate ambient environment of the monitored patient for discrete data signals indicative of each such activity state, said monitor comprising, in combination: (a) a plurality of sensors for detection, within the immediate ambient environment of the monitored subject, discrete physiological activity indicative of breathing activity, each of said sensed physiological activity being converted by a transducer to signal data which are characteristic of the sensed physiological activity; (b) a plurality of discrete information processing channels for processing the physiological data signals from each sensor, each such physiological data signals being processed in a separate channel; (c) a signal processing means for each such channel for verifying the quality of each such signal; (d) means for dynamic adjustment of the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physiological activity; and (e) means for comparision of the wave form of each such signal to certain standards, including wave forms of a sensed physiological activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (f) means for generation of an output signal to indicate abnormal respiratory activity.
Claim 13
Dependent Claim
227 words
A multi-channel ventilation monitor for real-time monitoring of multiple physiological activities indicative of respiration by measurement of the immediate ambient environment of the monitored patient for discrete data signals indicative of each such activity state, said monitor comprising, in combination: (a) a plurality of sensors for detection, within the immediate ambient environment of the monitored subject, discrete physiological activity indicative of breathing activity, each of said sensed physiological activity being converted by a transducer to signal data which are characteristic of the sensed physiological activity; (b) a plurality of discrete information processing channels for processing the physiological data signals from each sensor, each such physiological data signals being processed in a separate channel; (c) a signal processing means for each such channel for verifying the quality of each such signal; (d) means for dynamic adjustment of the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physiological activity; and (e) means for comparision of the wave form of each such signal to certain standards, including wave forms of a sensed physiological activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (f) means for generation of an output signal to indicate abnormal respiratory activity.
Claim 14
Dependent Claim
29 words
The monitor of claim 10, wherein the sensors include a motion detector, contained within a mattress, and an acoustic sensor for detection of audible sounds indicative of breathing activity.
Claim 15
Dependent Claim
35 words
The monitor of claim 10, wherein the adjustment in the gain of the data signal for each of the sensed physiological activities is in response to changes in the level of the sensed physiological activity.
Claim 16
Dependent Claim
51 words
The monitor of claim 10, wherein the comparison of the wave form of the signal data to wave forms which are stored in a data base enables the monitor to effectively differentiate between a data signal which is indicative of a sensed physiological activity and a data signal which is artifact.
Claim 17
Dependent Claim
246 words
In a method for real-time monitoring of multiple physiological activities indicative of respiration of a monitored subject, involving sensing of the physiological activity, generation of a data signal indicative of such physiological activity, processing of the data signal and comparison of the data signal to certain standards and/or physician defined parameters, the improvement comprising: (a) providing (i) a plurality of sensors for detection of discrete physiological activity indicative of breathing activity, each of said sensed physiological activity being converted by a transducer to data signals which are characteristic of the sensed physiological activity; (ii) a plurality of discrete information processing channels for processing the physiological data signals from each sensor, each such physiological data signals being processed in a separate channel; and (iii) a signal processing means for each such channel for verifying the quality of each such signal; (b) sensing a plurality of physiological activities indicative of breathing activity and generating data signals indicative of each such activity; (c) dynamically adjusting the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physiological activity; (d) comparing the wave form of each such signal to certain standards, including wave forms of a sensed physiological activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (e) generating an output signal to indicate abnormal respiratory activity.
Claim 18
Dependent Claim
246 words
In a method for real-time monitoring of multiple physiological activities indicative of respiration of a monitored subject, involving sensing of the physiological activity, generation of a data signal indicative of such physiological activity, processing of the data signal and comparison of the data signal to certain standards and/or physician defined parameters, the improvement comprising: (a) providing (i) a plurality of sensors for detection of discrete physiological activity indicative of breathing activity, each of said sensed physiological activity being converted by a transducer to data signals which are characteristic of the sensed physiological activity; (ii) a plurality of discrete information processing channels for processing the physiological data signals from each sensor, each such physiological data signals being processed in a separate channel; and (iii) a signal processing means for each such channel for verifying the quality of each such signal; (b) sensing a plurality of physiological activities indicative of breathing activity and generating data signals indicative of each such activity; (c) dynamically adjusting the gain and frequency response for each of the sensed physiological activity to reflect trends in the data signal for each such physiological activity; (d) comparing the wave form of each such signal to certain standards, including wave forms of a sensed physiological activity which have been stored in a data base and wave forms of sensed physiological activity which are indicative of a trend in a sensed activity for the monitored subject; and (e) generating an output signal to indicate abnormal respiratory activity.
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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) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |