Design and Implementation of a Wireless Chest Compression Monitoring and Feedback System

Abstract Background The effect of mechanical CPR is diversely described in the literature. Different mechanical CPR devices are available. The corpuls cpr is a new generation of piston-driven devices and was launched in 2015. The COMPRESS-trial analyzes quality of chest compression and CPR-related injuries in cases of mechanical CPR by the corpuls cpr and manual CPR. Methods This article describes the design and study protocol of the COMPRESS-trial. This observational multi-center study includes all patients who suffered an out-of-hospital cardiac arrest (OHCA) where CPR is attempted in four German emergency medical systems (EMS) between January 2020 and December 2022. EMS treatment, in-hospital-treatment and outcome are anonymously reported to the German Resuscitation Registry (GRR). This information is linked with data from the defibrillator, the feedback system and the mechanical CPR device for a complete dataset. Primary endpoint is chest compression quality (complete release, compression rate, compression depth, chest compression fraction, CPR-related injuries). Secondary endpoint is survival (return of spontaneous circulation (ROSC), admission to hospital and survival to hospital discharge). The trial is sponsored by GS Elektromedizinische Geräte G. Stemple GmbH. Discussion This observational multi-center study will contribute to the evaluation of mechanical chest compression devices and to the efficacy and safety of the corpuls cpr. Trial registration DRKS, DRKS-ID DRKS00020819. Registered 31 July 2020.

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Uninterruptible DC-powered boost differential inverter with a Sensorless Changeover System

WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS ◽

10.37394/23201.2021.20.2 ◽

2021 ◽

Vol 20 ◽

pp. 10-26 ◽

Cited By ~ 1

Author(s):

Candidus U. Eya ◽

Ayodeji Olalekan Salau ◽

Stephen Ejiofor Oti

Keyword(s):

Power Transformer ◽

Harmonic Distortion ◽

Systems Design ◽

Feedback System ◽

Input Voltage ◽

Solar Panels ◽

Design And Implementation ◽

Bidirectional Converter ◽

Simulation Results ◽

Fast Dynamic

This paper presents the design and implementation of an Uninterruptible DC-powered boost differential inverter with a sensor-less Changeover system. The systems design was developed using solar panels, bidirectional converter current linked battery banks, and a single-staged DC/AC Converter. The system was designed, modeled, and simulated using MATLAB/Simulink software before its implementation. The properties exhibited by the system include: Single stage input voltage transformation and amplification without a power transformer, lightweight sensor-less and relay-less automatic changeover, and a simplified feedback system. The simulation results show that the system gives a pure sine voltage and current waveforms, total harmonic distortion (THD) of 1.25%, efficiency of 94.4%, relatively fast dynamic response and 1 kilowatt power rating. The specific target areas of applications are: in medical paraphernalia where pure sine waveforms are needed, homes, and medium scale industries.

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