Abstract: A method includes assembling a sensor subassembly that includes a sensor, a sensor mount, a collar, a sharp, and a sensor cap. The method includes loading a sensor in a sensor mount; dispensing adhesive into a mount channel of the sensor mount; clamping a collar to the sensor mount; and curing the adhesive to fix the collar to the sensor mount. The method can also include inserting a sharp into the sensor mount over the sensor an attaching a sensor cap to the sensor and sensor sharp to provide a sealed sensor subassembly. Methods of assembling an on-body sensor puck assembly and an applicator assembly, and a sensor including a tail, a flag, and a neck that interconnects the tail and the flag and methods of configuring a sensor are also disclosed.

Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.

Abstract: Embodiments of the present invention relate to a pulse oximeter sensor. Specifically, embodiments of the present invention include emitting infrared light from a first light source into tissue, the infrared light including an infrared wavelength spectrum useful for measuring oxygen saturation in a patient with high saturation, emitting far red light from a second light source into the tissue, the far red light including a wavelength between 700 and 790 nanometers, and detecting the infrared light and far red light from the first and second light sources with a detector after the light has been scattered by the tissue.

Abstract: Embodiments of the present invention relate to a pulse oximeter sensor comprising a light source configured to emit light, a detector configured to detect light after the light has been scattered by tissue, and a limiting component configured to limit light signals received at the detector from the light source to three or less spectra, wherein the three or less spectra include a first spectrum having a mean wavelength in an infrared range of 805 nanometers to 940 nanometers, and a second spectrum having a mean wavelength of 700 nanometers to 790 nanometers used in conjunction with the first spectrum for measuring oxygen saturation in a patient.

Abstract: Embodiments of the present invention relate to a system and method for facilitating detection of a physiological characteristic of a patient. Specifically, embodiments of the present invention relate to a sensor comprising a light emitter configured to emit light, the light being optimized to reduce sensitivity of blood oxygen saturation measurements to perturbation induced artifacts for saturations less than 80 percent, wherein the light includes only spectrums in a red range and infrared range including a range of 700 to 790 nanometers, and a detector configured to detect the light.

Abstract: Embodiments of the present invention are directed to a system and method for measuring blood oxygen saturation. Specifically, embodiments of the present invention include emitting light having a wavelength spectrum that is optimized for an oxygen saturation reading less than 80 percent, detecting the light, and transmitting signals based on the detected light, the signals being useful in determining blood oxygen saturation with a pulse oximeter.