USRE40470E1 - Body function measuring apparatus - Google Patents
Body function measuring apparatus Download PDFInfo
- Publication number
- USRE40470E1 USRE40470E1 US09/539,096 US53909600A USRE40470E US RE40470 E1 USRE40470 E1 US RE40470E1 US 53909600 A US53909600 A US 53909600A US RE40470 E USRE40470 E US RE40470E
- Authority
- US
- United States
- Prior art keywords
- temperature
- sensor
- skin
- signal
- body function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/20—Clinical contact thermometers for use with humans or animals
Definitions
- the present invention relates, in general, to the measurement of body functions with sensors in contact with the skin of a human being and, in particular, to a unit which, in addition to measuring a body function, provides an indication when the sensor in contact with the skin becomes dislodged from the skin.
- a unit which, in addition to measuring a body function, provides an indication when the sensor in contact with the skin becomes dislodged from the skin.
- a signal representative of the skin temperature of an infant in an incubator can be used to display the of the infant and can be used to control the incubator heater to regulate the thermal environment of the incubator.
- Body function measuring apparatus constructed in accordance with the present invention, includes a housing and first and second identical sensors spaced apart in the housing and adapted for contact with generally the same area of skin for developing first and second body function signals, respectively.
- This skin temperature measuring apparatus also includes means responsive to the first body function signal and the second body function signal for developing an indication of the body function at the skin with which the first sensor and the second sensor are in contact and detecting a difference between the rate of change of the first body function signal and the rate of change of the second body function signal which exceeds a predetermined threshold representing a difference in the proximity of the first sensor to the skin and the proximity of the second sensor to the skin.
- FIG. 1 is a bottom view of the sensor portion of body function measuring apparatus constructed in accordance with the present invention.
- FIG. 2 is a functional block diagram of the signal processing portion of body function measuring apparatus constructed in accordance with the present invention.
- FIG. 3 is a circuit block diagram of the signal processing portion of body function measuring apparatus constructed in accordance with the present invention.
- body function measuring apparatus constructed in accordance with the present invention, includes a housing 10 and first and second identical sensors 12 and 14 spaced apart in the housing and adapted for contact with generally the same area of skin for developing first and second body function signals, respectively.
- first and second identical sensors 12 and 14 are identical thermistors.
- the first and second signals developed by sensors 12 and 14 are conducted by wires 15 and 16 to a connector 17 which is adapted for connection to a unit for displaying a reading of the body function being measured or to control apparatus for controlling the environment of an incubator or both. From this point on, the present invention will be described as applied for skin temperature measurements, although, as indicated above, the present invention has broader application.
- first thermistor 12 and second thermistor 14 are mounted on a flexible substrate 18 which has first and second lands 18 a and 18 b on which first thermistor 12 and second thermistor 14 , respectively, are mounted.
- a neck 16 e extends between first land 18 a and second land 18 b and has a width narrower than the width of the first land and the second land.
- substrate 18 and its configuration enhances the freedom of movement away from the skin of one or the other of thermistors 12 and 14 when the particular thermistor is in partial, rather than full, contact with the skin.
- a condition of partial contact with the skin of either of the thermistors is likely to lead to incorrect temperature indications.
- the relative proximities of the thermistors to the skin will lead to a quicker and more accurate indication of a loose probe condition.
- Skin temperature measuring apparatus constructed in accordance with the present invention, also includes means responsive to the first temperature signal developed by thermistor 12 and the second temperature signal developed by thermistor 14 for developing an indication of the temperature of the skin with which the first thermistor and the second thermistor are in contact and detecting a difference between the rate of change of the first temperature signal and the rate of change of the second temperature signal which exceeds a predetermined threshold representing a difference in the proximity of first thermistor 12 to the skin and the proximity of second thermistor 14 to the skin.
- the first temperature signal T 1 is representative of the temperature of the skin with which the first thermistor 12 and the second thermistor 14 are in contact and is provided as one output.
- Second temperature signal T 2 is inverted by an inverter 20 .
- the first temperature signal T 1 and the inverted second temperature signal T 2 are differentiated by differentiating circuits 22 and 24 , respectively, to develop signals representative of the rate of change of the first temperature signal and the rate of change of the second temperature signal, respectively.
- the differentiated first temperature signal and the differentiated second temperature signal are combined in a summing circuit 26 to develop, as a second output, a signal representative of the difference between the rate of change of the first temperature signal and the rate of change of the second temperature signal which, if exceeding a predetermined threshold, represents a difference in the proximity of first thermistor 12 to the skin and the proximity of second thermistor 14 to the skin.
- Skin temperature measuring apparatus constructed in accordance with the present invention, preferably also includes means responsive to first temperature signal T 1 and second temperature signal T 2 for detecting a difference between the first temperature signal and the second temperature signal which exceeds a predetermined threshold representing a failure of one of first thermistor 12 and second thermistor 14 .
- the inverted second temperature signal T 2 is combined with the first temperature signal T 1 in a summing circuit 28 to develop, as a third output, a signal representative of the difference between first temperature signal T 1 and second temperature signal T 2 .
- First temperature signal T 1 developed by first thermistor 12 , is supplied to a temperature indicator/controller 30 which provides a visual indication of the temperature of the skin with which thermistor 12 is in contact and also serves as a control of the temperature of the space within an incubator hood.
- First temperature signal T 1 and second temperature signal T 2 developed by second thermistor 14 , are supplied to a differential circuit 32 which develops a signal representative of the difference, if any, between first temperature signal T 1 and second temperature signal T 2 . If there is a and this difference exceeds a first predetermined threshold “A”, for example ten degrees, indicative of a failure of either first thermistor 12 or second thermistor 14 , an output is developed on a line “Y” and an indication of this difference or failure is provided by a failure indicator 34 .
- a first predetermined threshold “A” for example ten degrees
- first temperature signal T If there is a difference between first temperature signal T, and second temperature T 2 and this difference is less than the first predetermined threshold “A” but greater than a second predetermined threshold “B”, an output is developed on a line “N” and the combination of a level sensing circuit 36 and a differentiating circuit 38 develop a signal representative of the difference between the rate of change of the first temperature signal T 1 and the rate of change of the second temperature signal T 2 which, if exceeding a predetermined third threshold “C”, represents a difference in the proximity of first thermistor 12 to the skin and the proximity of second thermistor 14 to the skin, namely a loose probe condition.
- the loose probe condition is indicated by a loose probe indicator 40 .
- determining the difference between the rate of change of the first temperature signal T 1 and the rate of change of the second temperature signal T 2 provides a more reliable indication of a loose probe condition.
- Certain effects such as thermistors and other sensors wearing over time, produce a difference between the first temperature signal T 1 and the second temperature signal T 2 , so that a difference between the first temperature signal T 1 and the second temperature signal T 2 is not necessarily due to partial or complete probe dislodgement. Such effects, however, would not produce an appreciable, if any, difference between the rate of change of the first temperature signal T 1 and the rate of change of the second temperature signal T 2 .
- the difference between the first temperature signal T 1 and the second temperature signal T 2 is useful for identifying a failure of of the thermistors which would cause a significant difference between the first temperature signal T 1 and the second temperature signal T 2 .
Abstract
Description
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/539,096 USRE40470E1 (en) | 1996-08-27 | 2000-03-30 | Body function measuring apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/703,794 US5732711A (en) | 1996-08-27 | 1996-08-27 | Body function measuring apparatus |
US09/539,096 USRE40470E1 (en) | 1996-08-27 | 2000-03-30 | Body function measuring apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/703,794 Reissue US5732711A (en) | 1996-08-27 | 1996-08-27 | Body function measuring apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE40470E1 true USRE40470E1 (en) | 2008-08-26 |
Family
ID=24826807
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/703,794 Ceased US5732711A (en) | 1996-08-27 | 1996-08-27 | Body function measuring apparatus |
US09/539,096 Expired - Lifetime USRE40470E1 (en) | 1996-08-27 | 2000-03-30 | Body function measuring apparatus |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/703,794 Ceased US5732711A (en) | 1996-08-27 | 1996-08-27 | Body function measuring apparatus |
Country Status (4)
Country | Link |
---|---|
US (2) | US5732711A (en) |
JP (1) | JP3072836B2 (en) |
DE (1) | DE19737150B4 (en) |
GB (1) | GB2316749B (en) |
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US20100315258A1 (en) * | 2008-02-22 | 2010-12-16 | Omron Healthcare Co., Ltd. | Electronic thermometer |
US20120029308A1 (en) * | 2010-07-27 | 2012-02-02 | Carefusion 303, Inc. | System and method for monitoring body temperature of a person |
US8814792B2 (en) | 2010-07-27 | 2014-08-26 | Carefusion 303, Inc. | System and method for storing and forwarding data from a vital-signs monitor |
US9017255B2 (en) | 2010-07-27 | 2015-04-28 | Carefusion 303, Inc. | System and method for saving battery power in a patient monitoring system |
US20150124849A1 (en) * | 2013-11-04 | 2015-05-07 | Honeywell International Inc. | Detecting temperature sensor anomalies in connected thermostats |
US9055925B2 (en) | 2010-07-27 | 2015-06-16 | Carefusion 303, Inc. | System and method for reducing false alarms associated with vital-signs monitoring |
US9420952B2 (en) | 2010-07-27 | 2016-08-23 | Carefusion 303, Inc. | Temperature probe suitable for axillary reading |
US9585620B2 (en) | 2010-07-27 | 2017-03-07 | Carefusion 303, Inc. | Vital-signs patch having a flexible attachment to electrodes |
US9615792B2 (en) | 2010-07-27 | 2017-04-11 | Carefusion 303, Inc. | System and method for conserving battery power in a patient monitoring system |
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US6135968A (en) * | 1997-09-10 | 2000-10-24 | Scantek Medical, Inc. | Differential temperature measuring device and method |
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US6773405B2 (en) * | 2000-09-15 | 2004-08-10 | Jacob Fraden | Ear temperature monitor and method of temperature measurement |
US7248933B2 (en) * | 2001-05-08 | 2007-07-24 | Hill-Rom Services, Inc. | Article locating and tracking system |
US7242306B2 (en) | 2001-05-08 | 2007-07-10 | Hill-Rom Services, Inc. | Article locating and tracking apparatus and method |
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JP3566276B1 (en) * | 2003-05-07 | 2004-09-15 | 株式会社日立製作所 | Blood glucose meter |
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US7785266B2 (en) | 2003-08-19 | 2010-08-31 | Advanced Monitors Corporation | Medical thermometer for determining body core temperature |
US7938783B2 (en) | 2003-08-19 | 2011-05-10 | Advanced Monitors Corporation | Medical body core thermometer |
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US20070080801A1 (en) * | 2003-10-16 | 2007-04-12 | Weismiller Matthew W | Universal communications, monitoring, tracking, and control system for a healthcare facility |
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EP1568311A1 (en) * | 2004-02-27 | 2005-08-31 | Hitachi, Ltd. | Blood sugar level measuring apparatus |
JP3868963B2 (en) * | 2004-05-10 | 2007-01-17 | 株式会社日立製作所 | Blood glucose level measuring device |
US7251517B2 (en) * | 2004-06-30 | 2007-07-31 | Hitachi, Ltd. | Blood sugar level measuring apparatus |
US7215983B2 (en) * | 2004-06-30 | 2007-05-08 | Hitachi, Ltd. | Blood sugar level measuring apparatus |
JP3884036B2 (en) * | 2004-08-25 | 2007-02-21 | 株式会社日立製作所 | Blood glucose level measuring device |
JP2006094992A (en) * | 2004-09-29 | 2006-04-13 | Hitachi Ltd | Apparatus and method for measuring blood sugar |
US20060094941A1 (en) * | 2004-10-29 | 2006-05-04 | Ok-Kyung Cho | Optical measurement apparatus and blood sugar level measuring apparatus using the same |
DE102005037921B3 (en) | 2005-08-11 | 2006-06-14 | Dräger Medical AG & Co. KG | Temperature measuring device, for patient use, has evaluating means for detecting skin surface temperature from first temperature measured value and determines temperature at skin surface where double temperature sensor is in contact |
JP5540499B2 (en) * | 2008-02-22 | 2014-07-02 | オムロンヘルスケア株式会社 | Electronic thermometer |
GB2457732B (en) * | 2008-02-25 | 2012-10-17 | Janet Lawrence | Spot or rash tester |
CN109310319A (en) * | 2016-06-12 | 2019-02-05 | 诺基亚技术有限公司 | Method and apparatus for detecting contact of the wearable device with organism |
CN106214133A (en) * | 2016-08-04 | 2016-12-14 | 斯凯瑞利(北京)科技有限公司 | A kind of two-sided multi-point temperature measurement method and system |
CN108120528B (en) * | 2016-11-29 | 2022-07-22 | 蜂巢能源科技有限公司 | Temperature detection device and detection equipment for current carrier |
US10734110B2 (en) | 2018-12-05 | 2020-08-04 | Hill-Rom Services, Inc. | Caregiver locating tag having advanced functionality |
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US5385529A (en) * | 1991-02-08 | 1995-01-31 | Dragerwerk Aktiengesellschaft | Method for controlling the temperature of an incubator |
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US5415618A (en) * | 1989-09-12 | 1995-05-16 | Dragerwerk Aktiengesellschaft | Method for controlling the operating parameters of an incubator |
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US5450066A (en) * | 1993-09-07 | 1995-09-12 | Simplex Time Recorder Company | Fire alarm heat detector |
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Family Cites Families (1)
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WO1983001374A1 (en) * | 1981-10-22 | 1983-04-28 | ÖBERG, Tommy | Heart activity indicator |
-
1996
- 1996-08-27 US US08/703,794 patent/US5732711A/en not_active Ceased
-
1997
- 1997-07-31 GB GB9716093A patent/GB2316749B/en not_active Expired - Fee Related
- 1997-08-26 DE DE19737150A patent/DE19737150B4/en not_active Expired - Fee Related
- 1997-08-27 JP JP09231058A patent/JP3072836B2/en not_active Expired - Fee Related
-
2000
- 2000-03-30 US US09/539,096 patent/USRE40470E1/en not_active Expired - Lifetime
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
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US2553603A (en) * | 1949-08-16 | 1951-05-22 | Petcar Res Corp | Rate-of-rise temperature responsive system |
US4331161A (en) * | 1979-05-17 | 1982-05-25 | Healthdyne, Inc. | Patient sensor continuity detector |
US4295475A (en) * | 1979-10-26 | 1981-10-20 | Air Shields, Inc. | Probe and system for detecting probe dislodgement |
US4399824A (en) * | 1981-10-05 | 1983-08-23 | Air-Shields, Inc. | Apparatus for detecting probe dislodgement |
US4586149A (en) * | 1983-07-05 | 1986-04-29 | Sensormedics Corporation | Temperature control system for cutaneous gas monitor |
US5176704A (en) * | 1988-07-01 | 1993-01-05 | American Vista | Temperature-responsive pacifier assembly |
US5080106A (en) * | 1989-01-13 | 1992-01-14 | Terumo Kabushiki Kaisha | Apparatus for measuring cardiac output |
US5415618A (en) * | 1989-09-12 | 1995-05-16 | Dragerwerk Aktiengesellschaft | Method for controlling the operating parameters of an incubator |
US5385529A (en) * | 1991-02-08 | 1995-01-31 | Dragerwerk Aktiengesellschaft | Method for controlling the temperature of an incubator |
US5452725A (en) * | 1992-02-27 | 1995-09-26 | Fisher & Paykel Limited | Cable termination status detection |
US5392031A (en) * | 1992-03-17 | 1995-02-21 | Terumo Kabushiki Kaisha | Electronic clinical thermometer |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8400316B2 (en) * | 2008-02-22 | 2013-03-19 | Omron Healthcare Co., Ltd. | Electronic thermometer |
US20100315258A1 (en) * | 2008-02-22 | 2010-12-16 | Omron Healthcare Co., Ltd. | Electronic thermometer |
US9420952B2 (en) | 2010-07-27 | 2016-08-23 | Carefusion 303, Inc. | Temperature probe suitable for axillary reading |
US11083415B2 (en) | 2010-07-27 | 2021-08-10 | Carefusion 303, Inc. | Vital-signs patch having a strain relief |
US9017255B2 (en) | 2010-07-27 | 2015-04-28 | Carefusion 303, Inc. | System and method for saving battery power in a patient monitoring system |
US11311239B2 (en) | 2010-07-27 | 2022-04-26 | Carefusion 303, Inc. | System and method for storing and forwarding data from a vital-signs monitor |
US9055925B2 (en) | 2010-07-27 | 2015-06-16 | Carefusion 303, Inc. | System and method for reducing false alarms associated with vital-signs monitoring |
US9357929B2 (en) * | 2010-07-27 | 2016-06-07 | Carefusion 303, Inc. | System and method for monitoring body temperature of a person |
US20120029308A1 (en) * | 2010-07-27 | 2012-02-02 | Carefusion 303, Inc. | System and method for monitoring body temperature of a person |
US11264131B2 (en) | 2010-07-27 | 2022-03-01 | Carefusion 303, Inc. | System and method for saving battery power in a patient monitoring system |
US9585620B2 (en) | 2010-07-27 | 2017-03-07 | Carefusion 303, Inc. | Vital-signs patch having a flexible attachment to electrodes |
US9615792B2 (en) | 2010-07-27 | 2017-04-11 | Carefusion 303, Inc. | System and method for conserving battery power in a patient monitoring system |
US8814792B2 (en) | 2010-07-27 | 2014-08-26 | Carefusion 303, Inc. | System and method for storing and forwarding data from a vital-signs monitor |
US11090011B2 (en) | 2010-07-27 | 2021-08-17 | Carefusion 303, Inc. | System and method for reducing false alarms associated with vital-signs monitoring |
US9500612B2 (en) * | 2013-11-04 | 2016-11-22 | Honeywell International Inc. | Detecting temperature sensor anomalies |
US20150124849A1 (en) * | 2013-11-04 | 2015-05-07 | Honeywell International Inc. | Detecting temperature sensor anomalies in connected thermostats |
Also Published As
Publication number | Publication date |
---|---|
GB2316749B (en) | 2000-01-12 |
DE19737150B4 (en) | 2006-12-14 |
GB9716093D0 (en) | 1997-10-01 |
US5732711A (en) | 1998-03-31 |
JPH10137218A (en) | 1998-05-26 |
DE19737150A1 (en) | 1998-03-19 |
JP3072836B2 (en) | 2000-08-07 |
GB2316749A (en) | 1998-03-04 |
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Legal Events
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AS | Assignment |
Owner name: DRAEGER MEDICAL INFANT CARE, INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HILL-ROM SERVICES, INC.;REEL/FRAME:015188/0976 Effective date: 20040624 |
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Owner name: DRAEGER MEDICAL SYSTEMS, INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DRAEGER MEDICAL, INC.;REEL/FRAME:019520/0889 Effective date: 20061001 Owner name: DRAEGER MEDICAL, INC., PENNSYLVANIA Free format text: MERGER;ASSIGNOR:DRAEGER MEDICAL INFANT CARE, INC.;REEL/FRAME:019520/0854 Effective date: 20061001 |
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FPAY | Fee payment |
Year of fee payment: 12 |