A finite element analysis of local oscillometric blood pressure measurements.

Traditional circumferential oscillometric blood pressure measurements are based on a complex interplay between the perturbed underlying artery and the surrounding tissue. When there is a balance in pressures acting across the arterial wall, the pulsation amplitude is expected to be a maximum. The purpose of this study was to examine the change in pulsation amplitude for a given pressure resulting from a focally applied compression.

Novel design for a wearable, rapidly deployable, wireless noninvasive triage sensor.

This paper presents a unique design for a low-power, continuous non-invasive sensor capable of remotely monitoring the five major vital signs of a patient. In particular, the sensor is designed for rapid attachment to the fingerbase of a patient by utilizing a clip-type mechanism and is comprised of a photoplethysmograph (PPG), a MEMS accelerometer, a temperature sensor, and a wireless node. Although hastily placed by a medic, the finger sensor will automatically find the location of a digital artery and acquire a clear, pulse signal: a micro-sensor array accommodates the location of the sensor attachment.