CN1049048C - Non-destructive deep body temp. tester - Google Patents
Non-destructive deep body temp. tester Download PDFInfo
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- CN1049048C CN1049048C CN91111238A CN91111238A CN1049048C CN 1049048 C CN1049048 C CN 1049048C CN 91111238 A CN91111238 A CN 91111238A CN 91111238 A CN91111238 A CN 91111238A CN 1049048 C CN1049048 C CN 1049048C
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Abstract
The present invention relates to a non-injury deep part clinical thermometer which belongs to a biomedicine instrument. The present invention is characterized in that a heat guard circle principle in a heat transfer theory is introduced to a sensor of the instrument, a plurality of groups of heat flow meters and a corresponding heater controlled by the heat flow meters are used, the performance of the instrument is greatly improved, measuring depth is increased, and measuring time is shortened; simultaneously, a non-metal thermal-insulation shade is arranged outside a metal shade so as to reduce power consumption. Compared with a common temperature measurement method, the instrument is not limited by a testing position and is not injury performance measurement. Compared with the existing research, the precision of the instrument is improved, the measuring time is shortened and volumes are reduced. The present invention is a novel and practical means for measuring the temperature of bodies for clinical diagnosis, monitoring, biological research, etc.
Description
The invention belongs to a kind of deep body temperature tester.
Metabolism is the essential characteristic of life.And release, transfer and the utilization of the energy that invariably accompanies in the metabolic processes, i.e. energy metabolism.Body temperature is the important symbol of body energy metabolism status, and as main physiological parameter, its measurement is the important means of physiological Study and clinical diagnosis.Through years of development, measuring method is varied, along with the reach of science, people no longer are satisfied with the temperature of understanding some, wish to understand the deep body temperature of any part, or even the temperature field of whole body, particularly along with utilizing the thermal anomaly diagnosing malignant tumor clinically, the needs of the thermotherapy temperature control of cancer, the non-damage measurement of deep body temperature becomes the problem that presses for solution.
Because the heat radiation of human body skin, the temperature of common people surface is lower than deep temperature, prevents heat radiation if cover thermal insulation material at skin surface, eliminates the temperature difference, makes surface temperature near deep temperature.But desirable thermal insulation material material is difficult to find, and with the method compensation dispersed heat of heating, can realize measuring deep tissue temperature through skin near desirable thermal insulation.
The thermal compensation method at first proposes (J.Phsical.212,8-10,1971) by P.H.FOX (English), and by the temperature difference of thermosensitive resistance measurement thermal insulation material both sides, thereafter, the research group that reaches headed by the man (Japan) with the river, family has made improvement (medical electric
Give birth to body engineering 11,6,1973), at the sensor added metal cover.After this, this instrument is made commodity selling in Britain and Japan respectively, and the applied research report occurs subsequently in a large number, and especially in Japan, its application spreads all over aspects such as surgery, paediatrics, dept. of dermatology, neural profit, obstetrics and oncology.Such as, the prediction shock monitors body temperature during extracorporal circulatory system, by the active degree of thermometric judgement tumour, and the vasculitis diagnosis, the thermotonus and the temperature effect of monitoring medicine, the temperature effect of monitoring acupuncture in the traditional Chinese medical science, or the like.In a word, non-damage deep body temperature instrument can be used to inquire into the Changing Pattern of the deep body temperature of multiple disease.It is domestic that what carry out this work the earliest is that the Huo Ji culture and education of Chinese Medical Sciences University is awarded.He has introduced external progress, and copied the principle model machine (medicine equipment, 1981, V.5, N.3).
All in the past schemes have 2 significantly deficiencies from principle.One, the both be with two thermistors being positioned at center probe as the heat flow measurement element, realization only be the approximate zero hot-fluid of central point, the zone beyond the central point be actually do not have controlled.Increase the metal cap that makes probe edge temperature rise in the probe in river, family, just to a certain extent this deficiency has been done unexpected compensation.Its two because the thermistor temperature detecting accuracy limitations, the about 1w/m of hot-fluid minimum value of this method control
2About 0.1 ℃ of the error that only causes thus.In addition, the improved probe in river, family because metal housing dispels the heat in a large number, increases the instrument power consumption greatly.
At above-mentioned first deficiency, Fukuoka replaces the temperature difference to detect thermistor, (J.Biomed.Eng.1987 with heat flow meter, 4.173-176), shortened the gauge head response time, but because the interior heat flow field uneven distribution of gauge head makes the gauge head stable point depart from zero point, test error increase.
The present invention is directed to above-mentioned 3 deficiencies, propose our solution, purpose is to improve measuring accuracy, shorten the response time and reduce power consumption.
(1) directly replace thermistor to detect hot-fluid with the heat flow meter in the middle of being positioned at, make the hot-fluid detection sensitivity improve about 10 times, thickness only is the former 1/4th.
(2) replace in the past the well heater of one group of hot-fluid detecting device and control thereof with the corresponding well heater of many groups hot-fluid or temperature detector and control thereof; the heat flow meter and the well heater that are in the edge are equivalent to hot guard circle; make the interior heat flow field of circle more approach one dimension; and then, be convenient to the interior hot-fluid of control circle and more approach zero.
(3) add heat screen at metal cap, both absorbed the improvement in river, family, avoided again power consumption increase as.
Below in conjunction with details and the worker ashamed process of description of drawings according to an embodiment of the present invention's proposition.
Heat flow meter 4 detected values, amplify through amplifier 9, drive well heater 5 heating through control circuit 11 again, heat flow meter 3 detected values amplify through amplifier 8, drive well heater 6 as heat through control circuit 10 again, treat that two heat flow meter detected values approach zero, measure measured temperature by temperature sensor 7, metal cap 2 can reduce gauge head and radially conduct heat, and adiabatic outer cover 1 can reduce power consumption.
Claims (1)
- A kind of non-damage moldeed depth portion thermometer comprises sensor and electronic circuit.Comprise hot-fluid or temperature detector in the sensor, be subjected to the well heater and the temperature-sensing element (device) of its control.It is characterized in that containing in the sensor many group (two groups or more) hot-fluids or temperature detector and well heater correspondingly.The frame part of this sensor is the metal cap of a nonmetal heat insulation layer of tyre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91111238A CN1049048C (en) | 1991-12-03 | 1991-12-03 | Non-destructive deep body temp. tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91111238A CN1049048C (en) | 1991-12-03 | 1991-12-03 | Non-destructive deep body temp. tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1073010A CN1073010A (en) | 1993-06-09 |
| CN1049048C true CN1049048C (en) | 2000-02-02 |
Family
ID=4910523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91111238A Expired - Fee Related CN1049048C (en) | 1991-12-03 | 1991-12-03 | Non-destructive deep body temp. tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049048C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3054397A (en) * | 1959-11-05 | 1962-09-18 | Theodore H Benzinger | Method for measuring body temperature |
-
1991
- 1991-12-03 CN CN91111238A patent/CN1049048C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3054397A (en) * | 1959-11-05 | 1962-09-18 | Theodore H Benzinger | Method for measuring body temperature |
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| Publication number | Publication date |
|---|---|
| CN1073010A (en) | 1993-06-09 |
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Addressee: Institute of environmental sanitation engineering, Chinese Academy of Preventive Medicine Document name: Notification of Termination of Patent Right |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |