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US3636941A
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Sphygmomanometer alarm reset technique
Assignee: F Hoffmann La Roche AG
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Filing: 1970-01-12
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Granted: 1972-01-25
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Expires: 1990-01-12
Abstract
Abstract An alarm reset technique in a sphygmomanometer adapted for automatically monitoring a patient''s blood pressure at regular intervals, having electronic detection circuitry responsive to an alarm condition defined by high- and/or low-alarm comparator units and other sphygmomanometer signals to activate an alarm, and electronic logic circuitry for resetting a prior interval activated alarm without inhibiting subsequent activation of the alarm in the interval when reset.
Inventors
- 👤 Lawrence Norayr Guevrekian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:23
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
149 words
In an alarm system in a sphygmomanometer including a cuff for applying external pressure about a patient''s limb during a blood pressure measurement cycle including cuff inflation and deflation, cuff pressure meter means, means associated with the cuff for detecting blood pressure pulses, reference pressure value setting means defining an acceptable range of systolic pressures, comparison means responsive to a comparison of the meter means pressure with said reference pressure values timing means for activating the measurement cycle at predetermined intervals, alarm means, logic means responsive to said comparison means and detecting means for defining an alarm condition to activate said alarm means, the improvement comprising: reset means including a reset pulse to reset during a cuff pressurized portion of a measurement cycle, the alarm means activated from a prior interval, without inhibiting subsequent alarm means activation with occurrence of said alarm condition in the measurement cycle when reset.
Claim 2
Dependent Claim
149 words
In an alarm system in a sphygmomanometer including a cuff for applying external pressure about a patient''s limb during a blood pressure measurement cycle including cuff inflation and deflation, cuff pressure meter means, means associated with the cuff for detecting blood pressure pulses, reference pressure value setting means defining an acceptable range of systolic pressures, comparison means responsive to a comparison of the meter means pressure with said reference pressure values timing means for activating the measurement cycle at predetermined intervals, alarm means, logic means responsive to said comparison means and detecting means for defining an alarm condition to activate said alarm means, the improvement comprising: reset means including a reset pulse to reset during a cuff pressurized portion of a measurement cycle, the alarm means activated from a prior interval, without inhibiting subsequent alarm means activation with occurrence of said alarm condition in the measurement cycle when reset.
Claim 3
Dependent Claim
71 words
In an alarm system according to claim 1 having a means providing a signal indicative of commencement of cuff deflation, and second logic means responsive to the comparison means and the signal to define a second alarm condition, and including: second means to reset the alarm means activated from a prior interval, without inhibiting subsequent alarm means activation with occurrence of said second alarm condition in the measurement cycle when reset.
Claim 4
Dependent Claim
76 words
In an alarm system according to claim 1 wherein said logic means includes a first gate responsive to said alarm condition, and a first bistable means responsive to an output of the first gate to activate said alarm means, and said reset means includes a second gate responsive to the reset pulse and the first gate output, and a second bistable means coupled with said first gate and responsive to the output of the second gate.
Claim 5
Dependent Claim
28 words
In an alarm sysTem according to claim 3 wherein said second bistable means is coupled from said timing means, to be responsive at the commencement of each interval.
Claim 6
Dependent Claim
79 words
In an alarm system according to claim 2 wherein said second logic means includes a first gate responsive to the second alarm condition, and a first bistable means responsive to the output of said first gate to activate said alarm means, and said second reset means includes a second gate responsive to said reset pulse and said first gate output, and a second bi-stable means coupled with said first gate and responsive to the output of the second gate.
Claim 7
Dependent Claim
28 words
In an alarm system according to claim 5 wherein said second bistable means is coupled from said timing means, to be responsive at the commencement of each interval.
Claim 8
Dependent Claim
119 words
In a method for alarm reset in a sphygmomanometer for automatically monitoring a patient''s blood pressure at regular intervals including the steps of applying pressure to a cuff encircling a patientlimb, detecting blood pressure pulses, comprising preselected reference pressure values with the cuff pressure to define an acceptable range of systolic pressures, generating a timing pulse with the commencement of each interval, activating an alarm upon an alarm condition including detecting a blood pressure pulse occurring outside of the systolic pressure range, the improvement comprising resetting during a cuff pressurized portion of a measurement interval, the alarm from a prior interval without inhibiting subsequent activation of the alarm with occurrence of an alarm condition in the interval when reset.
Claim 9
Dependent Claim
119 words
In a method for alarm reset in a sphygmomanometer for automatically monitoring a patient''s blood pressure at regular intervals including the steps of applying pressure to a cuff encircling a patientlimb, detecting blood pressure pulses, comprising preselected reference pressure values with the cuff pressure to define an acceptable range of systolic pressures, generating a timing pulse with the commencement of each interval, activating an alarm upon an alarm condition including detecting a blood pressure pulse occurring outside of the systolic pressure range, the improvement comprising resetting during a cuff pressurized portion of a measurement interval, the alarm from a prior interval without inhibiting subsequent activation of the alarm with occurrence of an alarm condition in the interval when reset.
References Cited (Backward Citations)
US2821188A
Cited
US3536062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |