초록 ▼

A medical monitoring instrument such as a pulse oximeter uses vertical cavity surface emitting laser diodes (VCSELs) to produce at least two high intensity, essentially monochromatic light beams. The VCSELs are located either in: (1) the probe itself, (2) the connector to the probe, or (3) the monit

A medical monitoring instrument such as a pulse oximeter uses vertical cavity surface emitting laser diodes (VCSELs) to produce at least two high intensity, essentially monochromatic light beams. The VCSELs are located either in: (1) the probe itself, (2) the connector to the probe, or (3) the monitor box connected with an optical fiber to the probe.

대표청구항 ▼

[ We claim:] [1.]1. Medical apparatus for illuminating tissue of a subject to measure light absorption of said tissue by a measurement system, wherein at least one of a patient's heart rate and oxygen saturation of arterial blood is monitored, comprising:a plurality of surface emitting laser devices

[ We claim:] [1.]1. Medical apparatus for illuminating tissue of a subject to measure light absorption of said tissue by a measurement system, wherein at least one of a patient's heart rate and oxygen saturation of arterial blood is monitored, comprising:a plurality of surface emitting laser devices, each emitting a substantially monochromatic beam of light at a different, predetermined wavelength across a plurality of layers and through a surface mirror of a solid state structure in a direction substantially normal thereto in response to drive signals received from said measurement system, for illuminating tissue of said subject;a light receiving means for generating a detector signal indicative of intensity of light emanating from said illuminated tissue;means for removably attaching said plurality of surface emitting laser devices and said light receiving means to said subject, wherein each of said plurality of surface emitting laser devices is attachable to the subject in physical alignment with said light receiving means;means for interconnecting said plurality of surface emitting laser devices and said light receiving means with said measurement system to transmit said drive signals and said detector signal therebetween.