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EP0482562A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Electronic clinical thermometer

Assignee: Terumo Corp
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Filing: 1991-10-21
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Granted: —
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Expires: 2011-10-21
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Abstract

Abstract In a predicting-type electronic clinical thermometer, data acquired from a temperature sensor (51) at a very small time interval (Δt) is read in on a real-time basis, the data is converted into detected temperature (T) by means of a processor (9), the temperature is stored in a memory (7) and a temperature prediction is performed to obtain a predicted temperature (Tp). The rate of change (ΔT/Δt) in the detected temperature is obtained based upon the detected temperature (T). The moment at which this rate of change attains a predetermined value is taken as an opportunity to check the temporal fluctuation of the predicted temperature within a fixed reference time range. If the predicted temperature is found to have stabilized, the temperature detection is terminated. If it has not stabilized, the temperature detection is continued. Thus, the process through which an allowable condition for a valid prediction was realized is investigated looking back a predetermined length of time from the moment at which the condition was realized, and the result of the investigation is applied when evaluating the validity of the prediction. As a result, a highly accurate temperature prediction can be performed even if the circumstances in which the thermometer is being used changes during temperature detection.

Inventors

  • 👤 Yutaka c/o Terumo Kabushiki Kaisha Muramoto
  • 👤 Makoto C/O Terumo Kabushiki Kaisha Ikeda
  • 👤 Makoto C/O Terumo Kabushiki Kaisha Toriumi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 16:50
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/42

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 180 words
An electronic clinical thermometer for measuring body temperature of a region whose temperature is to be measured, comprising: temperature detecting means for measuring said body temperature of the region at a predetermined time interval; memory means for storing said body temperature; predicting means for predicting a predicted equilibrium temperature based upon said body temperature measured by said temperature detecting means; time detecting means for detecting a time at which a rate of change in said body temperature with time attains a predetermined value; calculating means for calculating a temporal fluctuation in said predicted equilibrium temperature within a predetermined time range in which the time detected by said time detecting means serves as a reference; comparing means for comparing said temporal fluctuation in said predicted equilibrium temperature calculated by said calculating means with a predetermined comparison value; and display control means which, based upon results of the comparison performed by said comparing means, is for displaying said predicted equilibrium temperature obtained at the time detected by said time detecting means, and controlling the temperature measurement performed by said temperature detecting means.
Claim 2
Dependent Claim 50 words
The thermometer according to claim 1, wherein said calculating means obtains a regression line from a fluctuation in the predicted equilibrium temperature with time within a predetermined time range, and employs the slope of said regression line as an index of said fluctuation in said predicted equilibrium temperature with time.
Claim 3
Dependent Claim 50 words
The thermometer according to claim 1, wherein said calculating means obtains a regression line from a fluctuation in said predicted equilibrium temperature with time within a predetermined time range, and employs an intercept of said regression line as an index of said fluctuation in said predicted equilibrium temperature with time.
Claim 4
Dependent Claim 81 words
The thermometer according to claim 1, wherein said calculating means obtains the difference between a maximum value and minimum value of said predicted equilibrium temperature, the difference between the mean value of said predicted equilibrium temperature and the maximum value, or the difference between the mean value of said predicted equilibrium temperature and the minimum value, within said predetermined time range, and employs any one of these values as an index of said fluctuation in said predicted equilibrium temperature with time.
Claim 5
Dependent Claim 73 words
The thermometer according to claim 1, wherein said calculating means calculates a value, which is the result of integrating, with regard to a predetermined closed interval, a curve indicative of a change in the predicted equilibrium value with time obtained from a fluctuation in said predicted equilibrium temperature with time within said predetermined time range, and employs this calculated value as an index of said fluctuation in the predicted equilibrium temperature with time.

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