US4843577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic clinical thermometer
Assignee: Terumo Corp
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Filing: 1987-03-04
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Granted: 1989-06-27
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Expires: 2007-03-04
Abstract
Abstract A predicting-type electronic clinical thermometer in which displayed temperature rapidly attains an equilibrium temperature before the temperature actually sensed does. The thermometer stores a weighting function, in which elapsed measurement time is a variable, prescribing a predetermined change in weighting. When temperature is being sensed, weighting based on the weighting function is applied to a difference value between the sensed body temperature and a predicted value of equilibrium temperature obtained based on the sensed body temperature. The temperature displayed is caused to make a smooth transition from the start of temperature detection to the final equilibrium temperature by adding the weighted difference value to the sensed temperature.
Inventors
- 👤 Yutaka Muramoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:34
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/20; G01K3/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
An electronic clinical thermometer comprising: temperature sensing means for sensing body temperature at a prescribed part of a body; predicting arithmetic means for predicting a final, stable temperature based on the sensed body temperature; arithmetic means for calculating a difference value between the sensed body temperature and the predicted final, stable temperature; memory means for storing a weighting function, in which elapsed measurement time is a variable, prescribing a change in weighting applied to the difference value; weighting means coupled to the memory means and a control means for obtaining a set of display temperatures for a plurality of sampling instants each of which display temperatures is derived by selecting a weight based on the weighing function and the elapsed time at a sampling instant, applying the selected weight to the difference value, and adding the weighted difference value to the sensed body temperature; said control means clocks elapsed measurement time for controllng said temperature sensing means and said weighting means at said plurality of sampling instants; and display means for displaying the obtained set of display temperatures.
Claim 2
Dependent Claim
178 words
An electronic clinical thermometer comprising: temperature sensing means for sensing body temperature at a prescribed part of a body; predicting arithmetic means for predicting a final, stable temperature based on the sensed body temperature; arithmetic means for calculating a difference value between the sensed body temperature and the predicted final, stable temperature; memory means for storing a weighting function, in which elapsed measurement time is a variable, prescribing a change in weighting applied to the difference value; weighting means coupled to the memory means and a control means for obtaining a set of display temperatures for a plurality of sampling instants each of which display temperatures is derived by selecting a weight based on the weighing function and the elapsed time at a sampling instant, applying the selected weight to the difference value, and adding the weighted difference value to the sensed body temperature; said control means clocks elapsed measurement time for controllng said temperature sensing means and said weighting means at said plurality of sampling instants; and display means for displaying the obtained set of display temperatures.
Claim 3
Dependent Claim
47 words
The electronic clinical thermometer according to claim 1, wherein said predicting arithmetic means is coupled to the control means and stores a plurality of temperature prediction functions in which elapsed measurement time is a variable, each function prescribing a temperature change up to a final, stable temperature.
Claim 4
Dependent Claim
35 words
The electronic clinical thermometer according to claim 1, wherein the weighting function exhibits an increasing characteristic up to a weighting of 100% in an interval from the start of measurement until a first predetermined time.
Claim 5
Dependent Claim
83 words
The electronic clinical thermometer according to claim 1, wherein the weighting function exhibits an increasing characteristic up to a weighting of 100% in an interval from the start of measurement until a first predetermined time, a level characteristic wherein the weighting of 100% is maintained in an interval from the first predetermined time to a second predetermined time, and a decreasing characteristic wherein the weighting decreases from 100% to 0% in an interval from the second predetermined time to a third predetermined time.
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |