Sensor for performing medical measurements, particularly pulsoximetry measurements on the human finger
First Claim
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1. A sensor for performing pulsoximetric measurements on the finger or toe of a patient, wherein electromagnetic waves are irradiated into the finger/toe and characteristics of radiation transmitted or reflected by the finger/toe are measured, said sensor comprising:
- a first casing part that is substantially rigid and includes a contact surface which is at least partly concave for adapting to a surface of a fingernail or toenail;
at least one electromagnetic radiation transmitting and/or receiving element embedded in the first casing part so that electromagnetic radiation can enter or exit said surface of the first casing part; and
,an adhesive element in contact with said contact surface and transparent to the electromagnetic radiation, for fixing said contact surface to the fingernail or toenail, wherein said contact surface is fixed to said fingernail or toenail solely by use of said adhesive element.
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Abstract
A sensor performs medical measurements, particularly pulsoximetric measurements, and is attached or otherwise adhered to a human fingernail or toenail by an inwardly concave, first casing part of a sensor. Electromagnetic, particularly optical, transmitting elements and receiving elements permit the measurement of the radiation reflected by or transmitted through the tissue. The sensor is easy to apply, allows a long application period and is reusable.
131 Citations
15 Claims
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1. A sensor for performing pulsoximetric measurements on the finger or toe of a patient, wherein electromagnetic waves are irradiated into the finger/toe and characteristics of radiation transmitted or reflected by the finger/toe are measured, said sensor comprising:
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a first casing part that is substantially rigid and includes a contact surface which is at least partly concave for adapting to a surface of a fingernail or toenail; at least one electromagnetic radiation transmitting and/or receiving element embedded in the first casing part so that electromagnetic radiation can enter or exit said surface of the first casing part; and
,an adhesive element in contact with said contact surface and transparent to the electromagnetic radiation, for fixing said contact surface to the fingernail or toenail, wherein said contact surface is fixed to said fingernail or toenail solely by use of said adhesive element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for performing medical optical measurements on the finger or toe of a patient comprising the steps of:
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providing a substantially rigid electromagnetic radiation sensor with a concave surface; applying an adhesive element that is transparent to electromagnetic radiation to said concave surface; adhering said concave surface of said sensor to a fingernail or toenail of the patient solely by use of said adhesive element; irradiating said fingernail or toenail, as the case may be, with electromagnetic radiation; and
,sensing said electromagnetic radiation that exits said finger or toe with said sensor.
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Specification