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Author:Tommila, Rurik
Title:Kaasujenvaihdon mittausten verifikaatiolaitteiston suunnittelu
Design of the verification setup for gas exchange measurement
Publication type:Master's thesis
Publication year:2011
Pages:[8] + 65      Language:   fin
Department/School:Lääketieteellisen tekniikan ja laskennallisen tieteen laitos
Main subject:Lääketieteellinen tekniikka   (Tfy-99)
Supervisor:Koskelainen, Ari
Instructor:Takala, Panu ; Seppänen, Hannu
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto  67   | Archive
Keywords:gas exchange
verification
metabolism
VO2
VCO2
kaasujenvaihto
verifikaatio
metabolia
VO2
VCO2
Abstract (eng): GE Healthcare Finland site in Vallila produces different kinds of gas modules, one of which is E-COVX designed to measure patient's gas exchange.
The module provides information which may be vital to the patient, and therefore they must be tested before sending to customer.
This testing has traditionally been taken care of with a hardware based on Deltatrac II metabolic monitor, heralded as a golden standard when measuring gas exchange.
However, the service of the monitor will be shut down, and therefore new solutions for testing the modules must be sought.

This thesis presents a solution to replace the old hardware.
The goal was to achieve at least the same accuracy as the old hardware and improve its usability.
Based on these goals, the chance to acquire a commercial solution is studied.
When no such solution is found, we design and execute a whole new system for testing the modules.
Based on the preliminary verification measurements concluded on the new solution, it can be said to achieve almost the same accuracy as the Deltatrac and clearly better accuracy than the modules tested.
There is still room for improvement: The measurement can be fully automatized and more accurate components can be acquired in order to improve overall accuracy.
Abstract (fin): GE Healthcare Finlandin Vallilan toimipisteessä valmistetaan erilaisia kaasumoduleita, joista yksi on potilaan kaasujenvaihtoa mittaava E-COVX.
Koska modulien tuottama tieto voi vaikuttaa potilaan terveyttä koskeviin hoitopäätöksiin, on modulien toiminnan testaaminen ennen niiden päästämistä käyttöön tärkeää.
Testaaminen on aikaisemmin hoidettu verifioidulla laitteistolla, joka on perustunut pitkälti historiallisesti hyväksi todettuun Deltatrac II -metaboliamonitoriin.
Monitorin huolto kuitenkin loppuu lähiaikoina, josta on aiheutunut tarve suunnitella tilalle korvaava laitteisto.

Tässä työssä esitellään ratkaisu vanhan laitteiston korvaamiseksi.
Lähtökohtana pyrittiin saavuttamaan vähintään sama tarkkuus kuin vanhassa laitteistossa sekä parantamaan sen käytettävyyttä.
Tavoitteiden pohjalta käydään läpi mahdollisuudet hankkia valmis sovellus nykyisen laitteiston tHalle, ja niiden osoittautuessa olemattomiksi suunnitellaan ja toteutetaan itse rakennettava laitteisto.
Uudelle laitteistolle suoritetuissa alustavissa verifikaatiomittauksissa sen todetaan saavuttavan lähes sama tarkkuus kuin Deltatracissa ja selvästi parempi tarkkuus kuin sillä testattavissa moduleissa.
Työssä esiteltyä laitteistoa aiotaan tulevaisuudessa vielä parantaa mittauksen automatisoinnilla sekä tarkempien komponenttien hankinnalla.
ED:2011-12-21
INSSI record number: 43646
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