Reusable Respiratory Effort Sensor Module
A respiratory effort sensing belt that incorporates a PVDF transducer is constructed such that the transducer is contained within an elastic, moisture impervious plastic envelope and affixed to the envelope are a pair of connectors adapted to receive opposed ends of a body-encircling, single-use band and which provide the ability to adjust belt tension. Because of the construction of the sensor module, it may be sterilized for reuse.
1 - 7 . (canceled)
8 . A method for formation of a respiratory effort belt to match a patient in a sleep lab setting comprising the steps of:
(a) providing a supply roll of webbing material of a predetermined width, the webbing material having a plurality of apertures formed therethrough at regularly spaced intervals along a length dimension of the webbing material comprising the roll;
(b) providing a reusable sensor module comprising polyvinylidene fluoride (PVDF) film strip having a layer of metallization on opposed major surfaces thereof and first and second insulated leads, each with first and second ends, where the first end of the first lead is electrically connected to the layer of metallization on one of the opposed major surfaces and the first end of the second lead is electrically connected to the layer of material on another of the opposed major surfaces, with the metallized PVDF film and a portion of the first and second leads enclosed in a moisture impervious elastomeric envelope;
(c) providing a pair of connectors adapted to be releasably attached to opposed ends of the elastomeric envelope, said connectors having a flat abutment surface and a button member projecting outward from the abutment surface, the button shaped to pass through a selected one of the plurality of apertures formed through the webbing material;
(d) cutting a length of the webbing material from the roll sufficient to span the waist or chest of a particular patient;
(e) affixing the pair of connectors to opposed ends of the elastomeric envelope;
(f) extending the button on at least one of the pair of connectors through a selected one of the plurality of apertures on the cut length of webbing material; and
(g) removing the envelope containing the sensor module and the pair of connectors from the length of webbing material obtained in step (d) following a single use of the respiratory effort belt on a patient.