US4501280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic identification of cuff size in automated blood pressure monitors
Assignee: Ethicon Inc
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Filing: 1983-04-06
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Granted: 1985-02-26
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Expires: 2003-04-06
Abstract
Abstract Automated blood pressure monitors utilizing a pressurized cuff are adapted automatically to work with a variety of cuff sizes, including neonatal. An acoustical pressure pulse is generated at the monitor, propagated to and through the cuff, and back to a pressure transducer in the monitor. The total time of propagation is indicative of the cuff size being utilized.
Inventors
- 👤 Rush W. Hood, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:44
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/02141; A61B5/022; A61B5/02233; G; G01; G01B; G01B17/00; G01B17/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
In an automatic blood pressure monitoring system for monitoring both neonatal and adult patients with a single monitor, a method of automatically detecting use of a neonatal cuff comprising the steps of: (a) inflating said cuff to a predetermined pressure; (b) coupling an acoustic pulse from said monitor to said cuff; (c) detecting return of said acoustic pulse to said monitor from said cuff; (d) measuring the time duration of propagation of said pulse; (e) comparing said measured duration with a predetermined reference threshold; and (f) commencing neonatal monitoring if said measured duration has a predetermined relationship with said threshold.
Claim 2
Dependent Claim
100 words
In an automatic blood pressure monitoring system for monitoring both neonatal and adult patients with a single monitor, a method of automatically detecting use of a neonatal cuff comprising the steps of: (a) inflating said cuff to a predetermined pressure; (b) coupling an acoustic pulse from said monitor to said cuff; (c) detecting return of said acoustic pulse to said monitor from said cuff; (d) measuring the time duration of propagation of said pulse; (e) comparing said measured duration with a predetermined reference threshold; and (f) commencing neonatal monitoring if said measured duration has a predetermined relationship with said threshold.
Claim 3
Dependent Claim
113 words
In a blood pressure monitoring system employing a selectively inflatable cuff interconnected in a pressurized closed loop with a monitoring system, said system including a transducer for measuring loop pressure, a method for identifying the one of a selection of cuffs which is connected to the monitor, comprising the steps of: (a) inflating said cuff to a predetermined pressure; (b) creating a pressure change pulse at a portion of said loop opposite said transducer with respect to said cuff; (c) detecting said pulse at said transducer; and (d) measuring the time duration between creation of said pulse and detection thereof, said time duration being associated in predetermined fashion with one of said cuffs.
Claim 4
Dependent Claim
113 words
In a blood pressure monitoring system employing a selectively inflatable cuff interconnected in a pressurized closed loop with a monitoring system, said system including a transducer for measuring loop pressure, a method for identifying the one of a selection of cuffs which is connected to the monitor, comprising the steps of: (a) inflating said cuff to a predetermined pressure; (b) creating a pressure change pulse at a portion of said loop opposite said transducer with respect to said cuff; (c) detecting said pulse at said transducer; and (d) measuring the time duration between creation of said pulse and detection thereof, said time duration being associated in predetermined fashion with one of said cuffs.
Claim 5
Dependent Claim
90 words
In an automated blood pressure monitoring system, a method for automatically determining which one of a select class of cuffs are to be empolyed, comprising the steps of: (a) inflating said cuff to a predetermined pressure; (b) establishing a target pressure which is different from said predetermined pressure; (c) changing the cuff pressure at a given rate in the direction of said target pressure; and (d) measuring the time required to reach said target pressure, said measured time being indicative of which cuff is to be employed in the system.
Claim 6
Dependent Claim
90 words
In an automated blood pressure monitoring system, a method for automatically determining which one of a select class of cuffs are to be empolyed, comprising the steps of: (a) inflating said cuff to a predetermined pressure; (b) establishing a target pressure which is different from said predetermined pressure; (c) changing the cuff pressure at a given rate in the direction of said target pressure; and (d) measuring the time required to reach said target pressure, said measured time being indicative of which cuff is to be employed in the system.
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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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |