Title: Temperature measurement

Abstract: The temperature within a body is measured by covering an area of the body surface with a layer of thermal insulation, measuring the temperature with two sensors located respectively at the insulation/body surface interface and at the opposite side of the insulating layer to indicate any temperature gradient along a path from within the body through the sensors, and applying heat over the insulating layer/sensor sandwich to annul any such gradient. This effectively exteriorises the desired deep body temperature, which is then indicated by the sensors. It is important that the insulation extend laterally beyond the sensors to guard against peripheral temperature gradients affecting the sensor region and to take account of any inherent thermal irregularities in the body. This last point is particularly relevant to clinical use on human subjects with irregularities caused by vascular channels. Similar considerations lead to use of a thin film or similar uniform heating element over the relevant area.

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Inventors: Fox, Ronald Howard (Chorley Wood, EN)
Solman, Arthur James (London, EN)

Application Number: 138916
Filing Date: 1971-04-30
Publication_date: 1976-01-20
Assignee: National Research Development Corporation (London, EN)
Primary Class(es): 374/134 600/549
Other Classes:
US Patent Ref:

2798377	Jul, 1957	Brownlee et al.	73/342.
3217538	Nov, 1965	Loeb	73/DIG.
3321974	May, 1967	Sterbutzel	73/359.
3332285	Jul, 1967	Cook	73/359.
3435400	Mar, 1969	Beckman	73/362.

Other Refs:
Primary Examiner: Queisser, Richard C.
Assistant Examiner: Shoon, Frederick
Attorney: Cushman, Darby and Cushman