Method of making a respiration sensor

Details Method of making a respiration sensor Method of making a respiration sensor

1997-09-19

1998-11-10

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

29620, 427 96, 338 22R, H01C 702, H01C 1706, B05D 512

Patent

active

058325921

ABSTRACT:
A plurality of flow sensors are fabricated on a single substrate. The substrate is laid out to provide the proper physical relationship of the individual sensors. The resulting multiple sensor structure may be effectively used as a respiration detector by positioning a different sensor element at each of the airflow orifices (i.e., two nostrils and mouth) of a patient. In the preferred embodiment, the sensors are thermoresistive elements, which are screened on the substrate using conductive ink. The change in temperature of the air flow in relation to the ambient at each orifice provides an indication of the flow and may be used to determine the extent of the flow. The substrate is packaged in a single piece adhesive strip which provides ease of proper attachment by the patient.

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