Pulse/oxygen sensor and method of making
First Claim
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1. A sensor for noninvasive measurement of at least one of a patent'"'"'s pulse rate and blood constituents, comprising:
- a conductor assembly having a flexible conductor plate;
a light source transmitter enclosed in a transmitter housing, said light source transmitter and said transmitter housing being fixedly mounted on said flexible conductor plate, said transmitter housing having a thin, light-permeable layer directly adjacent a light source of said transmitter;
a receiver sensitive to light emitted from said transmitter, said receiver being enclosed in a receiver housing having a thin light-permeable layer directly adjacent a light detecting surface of said receiver, said receiver and said receiver housing being fixedly mounted on said flexible conductor plate; and
a sensor housing of a light-impermeable material enclosing said conductor plate and covering completely said conductor plate and partially covering said transmitter and receiver housings to define first and second optical windows at said thin light-permeable layers respectively, said sensor housing being attached tightly to said transmitter housing and said receiver housing for sealing said transmitter and receiver housings to said sensor housing to prevent infiltration of fluids therebetween;
whereby said optical windows remain directly exposed to the patient'"'"'s skin.
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Abstract
A sensor for the noninvasive measurement of the pulse rate and/or oxygen saturation of the blood of a person has a housing holding a transmitter and a receiver. The housing has thin, light-permeable layers in the areas of the light source surface of the transmitter and the light detecting surface of the receiver. Both the transmitter and the receiver are mounted on a flexible conductor plate. The housing is formed of a tight sheathing covering the transmitter, the receiver and the conductor plate supporting the transmitter and receiver.
215 Citations
11 Claims
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1. A sensor for noninvasive measurement of at least one of a patent'"'"'s pulse rate and blood constituents, comprising:
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a conductor assembly having a flexible conductor plate; a light source transmitter enclosed in a transmitter housing, said light source transmitter and said transmitter housing being fixedly mounted on said flexible conductor plate, said transmitter housing having a thin, light-permeable layer directly adjacent a light source of said transmitter; a receiver sensitive to light emitted from said transmitter, said receiver being enclosed in a receiver housing having a thin light-permeable layer directly adjacent a light detecting surface of said receiver, said receiver and said receiver housing being fixedly mounted on said flexible conductor plate; and a sensor housing of a light-impermeable material enclosing said conductor plate and covering completely said conductor plate and partially covering said transmitter and receiver housings to define first and second optical windows at said thin light-permeable layers respectively, said sensor housing being attached tightly to said transmitter housing and said receiver housing for sealing said transmitter and receiver housings to said sensor housing to prevent infiltration of fluids therebetween; whereby said optical windows remain directly exposed to the patient'"'"'s skin. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A process for making a sensor for noninvasive measurement of least one of a patient'"'"'s pulse rate and blood constituents having a light source transmitter and a receiver sensitive to light emitted from the transmitter, comprising the steps of:
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fixedly mounting the transmitter and the receiver on a prefabricated conductor plate to form a structural unit of the plate, receiver and transmitter; attaching a cable to the conductor plate so as to be electrically coupled to the transmitter and the receiver; directly covering the transmitter and the receiver by light-permeable insulating members and mounting said insulating members on said conductor plate; covering partially the structural unit by a preformed insulating member; and casting light-impermeable elastic material at least partially about the structural unit and an end of the cable attached to the structural unit to form together with the preformed insulating member a housing sealing the light-permeable insulating members to the light-impermeable elastic material to prevent infiltration of fluids therebetween and completely covering the structural unit and partially covering the light-permeable insulating members to define optical windows for the transmitter and the receive, whereby the optical windows remain directly exposed to the patient'"'"'s skin. - View Dependent Claims (9, 10, 11)
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Specification