Single-body unit for pulse oximeter calibration

摘要

An all-solid, single-body unit for calibrating a pulse oximeter that uses probe light beams is provided. A bulk of the unit is substantially composed of a mixture of materials comprising one or more polymer materials that form a flexible solid medium for the bulk of the unit, one or more scattering materials for scattering the probe light beams, and one or more dye materials for attenuating the probe light beams. The flexible solid medium enables a pulsatile rhythmic train of action force received by the unit to be transmitted in the unit during calibrating the pulse oximeter for substantially emulating change of absorbance characteristics of the probe light beams due to pulsing arterial blood. The scattering materials and the dye materials are localized in the flexible solid medium, enabling the unit to be used in calibrating the pulse oximeter without a need for an additional device for further emulation.

主权项

1. An apparatus comprising:
a single-body unit configured to calibrate a pulse oximeter that uses probe light beams having pre-determined wavelengths to measure the saturation of peripheral oxygen (SpO2) level of a pre-determined human body part, wherein the single-body unit is formed from a mixture of materials, the mixture of materials comprising: one or more polymer materials that form a flexible solid medium configured to transmit a pulsatile rhythmic train of action force received by the single-body unit during calibration of the pulse oximeter; one or more scattering materials to scatter the probe light beams, wherein the scattering of the probe light beams by the one or more scattering materials during the calibration of the use oximeter emulates scattering behavior of the probe light beams when propagated in the pre-determined human body part; and one or more dye materials to attenuate the probe light beams, wherein the attenuation of the probe light beams by the one or more dye materials during the calibration of the pulse oximeter emulates to absorption behavior of the probe light beams when propagated in the pre-determined human body part, wherein the one or more polymer materials form a bulk of the single-body unit, wherein each of the one or more scattering materials and each of the one or more dye materials are substantially-uniformly dispersed in the entire single-body unit, and wherein the one or more polymer materials, the one or more scattering materials, and the one or more dye materials are selected such that the mixture of materials forming the single-body unit emulates a particular SpO2 level during the calibration of the pulse oximeter, the particular SpO2 level corresponding to an expected SpO2 level for the pre-determined human body part when measured using the pulse oximeter.