Disposable pulse oximeter sensor
First Claim
1. A non-invasive, electrooptical sensor for removable attachment to the skin of a patient comprising:
- a first flexible substrate having first and second portions which are connected to each other;
a light emitter mounted on one of said first and second portions of said first substrate;
a light detector mounted on one of said first and second portions of said first substrate;
a plurality of conductive lines deposited on said first substrate, at least one being connected to said light emitter and at least one being connected to said light detector, at least two of said conductive lines extending across a first surface of said first portion and a second surface of said second portion, said first and second surfaces facing each other, said light emitter and light detector facing the same direction;
an insulating layer separating said first and second surfaces; and
wherein at least one of said light emitter and light detector comprised an unpackaged semiconductor die having an electrical contact pad on a face thereof, which is directly mounted on a conductive area on said flexible substrate and electrically connected thereto.
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Accused Products
Abstract
A conformable sensor which uses a flexible substrate, preferably a polyester strip is disclosed. The emitter and detector are mounted on one portion of the strip with conductive traces connecting to them. The second portion of the strip is folded over to cover the emitter and detector and traces, with openings for the emitter and detector. A conductive coating is applied to the strip to provide shielding from electromagnetic interference. Preferably, a second portion of the strip, which folds over the first portion, also has a Faraday shield covering the opening over the detector. The detector and emitter semiconductor chip die (rather than use encapsulated chips) may be mounted directly on the polyester strip so that it is in contact with one of the conductive traces.
264 Citations
7 Claims
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1. A non-invasive, electrooptical sensor for removable attachment to the skin of a patient comprising:
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a first flexible substrate having first and second portions which are connected to each other; a light emitter mounted on one of said first and second portions of said first substrate; a light detector mounted on one of said first and second portions of said first substrate; a plurality of conductive lines deposited on said first substrate, at least one being connected to said light emitter and at least one being connected to said light detector, at least two of said conductive lines extending across a first surface of said first portion and a second surface of said second portion, said first and second surfaces facing each other, said light emitter and light detector facing the same direction; an insulating layer separating said first and second surfaces; and wherein at least one of said light emitter and light detector comprised an unpackaged semiconductor die having an electrical contact pad on a face thereof, which is directly mounted on a conductive area on said flexible substrate and electrically connected thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification