Patent ID: 9538927
Date: 2017-01-10
CPC Classifications: A61B,F04C,G01N

Claim:
1. A system comprising a personal mobile processing device and reflectance-based optical measurement (RBOM) accessory for removably coupling to the personal mobile processing device, the RBOM accessory comprising: an illumination and detection assembly configured to output light to a surface portion of a user for measurement and to detect the output light reflected from said surface portion of the user as a signal; a pressure assembly configured to detect an amount of pressure applied to the illumination and detection assembly by said surface portion of the user; a coupling member configured for removably coupling in a cableless configuration to the personal mobile processing device; and a measurement surface configured to allow access to said measurement surface by the surface portion of the user, wherein the RBOM accessory is smaller than palm size, wherein said access is provided by the optical accessory being holderless such that the surface portion of the user is allowed access to said measurement surface from all directions in a single plane, wherein said coupling member is arranged to transmit the detected signal to the personal mobile processing device for deriving from the detected signal, saturation of peripheral oxygen (SPO wherein the RBOM accessory is configured to communicate with the personal mobile processing device that is configured to correlate a quality of the detected signal with the amount of pressure by: computing an area under waveforms of detected signals corresponding to a variety of applied pressure amounts, and determining an optimum pressure to correspond a largest computed area, from the variety of applied pressure amounts.