A New Design of Pain Monitoring System during General Anesthesia Operations Based on Pulse Wave Transfer Function

Abstract

Pain monitoring is essential during general anesthesia operations. Previous researchers have found relationship between pulse wave and painful stimulation and introduced parameters based on photoplethysmography (PPG). According to arterial windkessel model, pulse wave transfer function (PWTF) would represent the transmission of stimulation but there was little research on this. A synchronous dual channel PPG acquiring system with ECG circuit and external blood pressure module is built to push on the research. System works well with testers aged from 10 to 65, both male and female.

Design and Evaluation of a USB Isolator for Medical Instrumentation

“…However, the hardware for this communication protocol has been decreasing in the PC ports every day. Isolation through a USB cable has also been worked and although some designs work properly, the results do not prove electrical safety in order to be used as a medical grade interface [22], [23]. Moreover, they do not specify the type of applied parts that can be used according to the dielectric strength.…”