US4264328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recording measured values in an automatically performed blood gas analysis
Assignee: AVL Medical Instruments AG
•
Filing: 1978-11-16
•
Granted: 1981-04-28
•
Expires: 1998-11-16
Abstract
Abstract The measured values are calculated from the following equation: <IMAGE> in which X1, Xi+1, Xi+2 are three values of signals obtained from one electrode measured successively at equal intervals of time, namely after a latent time tau has elapsed. The time required for calibration and measurement in the course of a blood gas analysis can be substantially reduced by the consistent application of this procedure for obtaining the measured value for each calibration and measurement.
Inventors
- 👤 Hermann Marsoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:31
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4925
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
Method for obtaining a result value in blood gas analysis from a signal supplied by a measuring electrode when it changes from one equilibrium state into another, wherein the signal is measured after a latent phase (τ o ) following the beginning of the change from said one equilibrium state to the other equilibrium state to provide a first measured value (X i ), the signal is measured after an interval following the first measurement to provide a second measured value (X i+1 ), the signal is measured after an interval following the second measurement to provide a third measured value (X i+2 ) and the result value is calculated from the three measured values, the inerval (Δτ) between the second and third measurements being substantially equal to the interval (Δτ) between the first and second measurements.
Claim 2
Dependent Claim
137 words
Method for obtaining a result value in blood gas analysis from a signal supplied by a measuring electrode when it changes from one equilibrium state into another, wherein the signal is measured after a latent phase (τ o ) following the beginning of the change from said one equilibrium state to the other equilibrium state to provide a first measured value (X i ), the signal is measured after an interval following the first measurement to provide a second measured value (X i+1 ), the signal is measured after an interval following the second measurement to provide a third measured value (X i+2 ) and the result value is calculated from the three measured values, the inerval (Δτ) between the second and third measurements being substantially equal to the interval (Δτ) between the first and second measurements.
Claim 3
Dependent Claim
33 words
Method according to claim wherein 1, the result value is calculated in accordance with the following equation: ##EQU3## where X i , X i+1 , X i+2 represent the three successive values measured.
Claim 4
Dependent Claim
48 words
Method according to claim 1, wherein a gaseous or liquid medium is brought into contact with electrochemical electrodes before the signals are recorded, the time of complete contact of the electrodes with a liquid specimen is recognized and whether a sufficient specimen quantity is present is also recognised.
References Cited (Backward Citations)
US3763422A
Cited
US3874850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |