Combination physiologic sensor
A multi sensor module especially designed for use in sleep-study applications includes a PVDF film piezoelectric transducer enclosed between an upper layer of a single-sided adhesive tape strip and a lower layer of a double-sided adhesive tape strip. Also adhesively affixed to the upper single-sided adhesive tape strip, but not overlaid by the lower double-sided adhesive tape strip are first and second conductive electrodes. The combination sensor module is adapted to be adhesively affixed to the chest area of a person and further included in an extension of the PVDF strip that is adapted to overlay the suprasternal notch of a person for producing signals responsive to respiratory activity of the person.
1. A multi-sensor module comprising:
a) a flexible strip of polyvinylidene fluoride (PVDF) polymer of a predetermined length and width dimension and being T-shaped with a leg of the T projecting out from the length dimension of the PVDF strip for a predetermined distance having a coating of metal on opposed major surfaces with first and second insulated electrical leads conductively and individually connected at one end of the strip to the metal coatings;
b) first and second conductive electrodes coplanar with and spaced longitudinally from opposed ends of the flexible strip of PVDF polymer with third and fourth insulated electrical leads conductively and individually connected to the first and second conductive electrodes;
c) an elongated T-shaped strip of a single-sided adhesive tape whose length and width dimensions both exceed the length and width dimension of the strip of PVDF polymer and sufficient to overlay the first and second conductive electrodes with a leg of the T on the T-shaped single sided adhesive tape overlaying the leg of the T-shaped strip of polymer; and
d) an elongated strip of a double-sided adhesive tape arranged such that one side of the double-sided adhesive tape adheres to an adhesive on the T-shaped strip of single-sided adhesive tape with the T-shaped strip of PVDF polymer but not the first and second conductive electrodes, disposed there between and wherein the predetermined distance is adapted to reach the suprasternal notch of a patient when the strip of double-sided adhesive tape is adhered to the patient's midline chest area.