Elektronski simulator pacienta za invazivno meritev krvnega pritiska

BARBIČ, URBAN (author), Jankovec, Marko (mentor)

Diplomska naloga opisuje razvoj in izdelavo naprave za elektronsko simulacijo pacienta pri invazivni meritvi krvnega tlaka. Opisano je tudi delovanje manjšega programa, ki demonstrira simulacijo statičnih in dinamičnih signalov. Namen naloge je razvoj osnovnega funkcijskega prototipa vezja, ki je strojno primeren za kalibracijo modulov za invazivno meritev krvnega tlaka na napravah, ki se uporabljajo v medicini. V delu se najprej na kratko opiše področje medicinskih naprav in simulatorjev, njihova področja delovanja, omeni pa se tudi slovenska podjetja, ki izdelujejo tovrstne naprave. Sledi opis delovanja srčne mišice, ki je direktno povezano s pojmom krvnega tlaka in kratek popis zgodovine meritev. Opisi metod in meritev tlaka so predstavljeni v sledečem delu in predstavljajo vpogled v trenutno stanje tega področja medicine. Po opisu obstoječega sistema simulatorja se diplomsko delo usmeri v opisovanje naše naprave in njenega delovanja. Naprava je bila izdelana na osnovi zahtev, ki jih je posredoval naročnik in mora glede na vzbujalno napetost in izbrano simulirano vrednost generirati signal enak tistemu, ki ga pri istem vzbujanju in zaznanem tlaku generira običajna idealna sonda namenjena invazivni meritvi krvnega tlaka. Naprava je realizirana s pomočjo vezja, ki ga v sestavlja digitalno-analogni pretvornik (DA), katerega signale priredimo s pomočjo zunanjega vezja tako, da celotno območje izhodnih signalov pretvornika zajema želeno območje simuliranja signalov, ki jih želimo generirati za namene kalibracije zunanje naprave. Programska koda je namenjena predvsem prikazu delovanja vezja in poda osnovne rezultate meritev.

• Language: Slovenian
• Keywords: elektronski simulator pacienta, krvni tlak, invazivna meritev
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2018
• PID: 20.500.12556/RUL-103087
• Publication date in RUL: 13.09.2018

Secondary language

• Language: English
• Title: Electronic patient simulator for the invasive blood pressure measurement

Abstract

In this thesis we describe development and realization of electronic patient simulator for invasive blood pressure measurement. Also there is a description of simple program that simulates static and dynamic signals. The main purpose of this thesis is to develop basic functioning prototype circuit which is suitable for calibration of invasive blood pressure measurement module on devices used in medicine. Firstly we make a short overview on the medical devices and simulators, fields of use and we also mention Slovenian companies that make such devices. Than we take a look at functioning of hearth muscle which is directly related to blood pressure and some history of blood pressure measurement. Next we take a look in blood pressure measurement so we get an overview in current state in medicine on that field. The main part of the thesis describes our device and its performance. Our device was developed based on specifications from our customer and has to return the same value based on the excitation voltage and setting that real invasive blood pressure probe would under the same settings. Main part of our device is digital to analog converter which output signal is conditioned with some additional circuit in such a way that output meets the specification. Program code was developed for the purpose of simulating functions of the device and provides basic measurement results.

• Keywords: electronic patient simulator, blood pressure, invasive measurement