Cargando…

Vapourisers: Physical Principles and Classification

Vapourisers have evolved from rudimentary inhalers to the microprocessor controlled, temperature compensated and flow sensing devices, which are universal today. The improvements in the design was influenced by the development of potent inhalational anaesthetics, unique properties of some agents, a...

Descripción completa

Detalles Bibliográficos
Autores principales: Dhulkhed, Vithal, Shetti, Akshaya, Naik, Shraddha, Dhulkhed, Pavan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3821262/
https://www.ncbi.nlm.nih.gov/pubmed/24249878
http://dx.doi.org/10.4103/0019-5049.120141
_version_ 1782290270669242368
author Dhulkhed, Vithal
Shetti, Akshaya
Naik, Shraddha
Dhulkhed, Pavan
author_facet Dhulkhed, Vithal
Shetti, Akshaya
Naik, Shraddha
Dhulkhed, Pavan
author_sort Dhulkhed, Vithal
collection PubMed
description Vapourisers have evolved from rudimentary inhalers to the microprocessor controlled, temperature compensated and flow sensing devices, which are universal today. The improvements in the design was influenced by the development of potent inhalational anaesthetics, unique properties of some agents, a deeper understanding of their mechanism of action, inherent flaws in the older vapourisers, mechanical problems due to thymol deposition, factors influencing their output such as temperature and pressure variations. It is important to review the principles governing the design of the vapouriser to gain insight into their working. It is fascinating to know how some of the older vapourisers, popularly used in the past, functioned. The descendant of Oxford Miniature Vapourizer, the Triservice vapouriser is still a part of the military anaesthesia draw over equipment meant for field use whereas the Copper Kettle the first precision device is the fore-runner of the Tec 6 and Aladdin cassette vapouriser. Anaesthesia trainees if exposed to draw over techniques get a deeper understanding of equipment and improved skills for disaster situations. In the recent advanced versions of the vapouriser a central processing unit in the anaesthetic machine controls the operation by continuously monitoring and adjusting fresh gas flow through the vapouriser to maintain desired concentration of the vapour.
format Online
Article
Text
id pubmed-3821262
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Medknow Publications & Media Pvt Ltd
record_format MEDLINE/PubMed
spelling pubmed-38212622013-11-18 Vapourisers: Physical Principles and Classification Dhulkhed, Vithal Shetti, Akshaya Naik, Shraddha Dhulkhed, Pavan Indian J Anaesth Review Article Vapourisers have evolved from rudimentary inhalers to the microprocessor controlled, temperature compensated and flow sensing devices, which are universal today. The improvements in the design was influenced by the development of potent inhalational anaesthetics, unique properties of some agents, a deeper understanding of their mechanism of action, inherent flaws in the older vapourisers, mechanical problems due to thymol deposition, factors influencing their output such as temperature and pressure variations. It is important to review the principles governing the design of the vapouriser to gain insight into their working. It is fascinating to know how some of the older vapourisers, popularly used in the past, functioned. The descendant of Oxford Miniature Vapourizer, the Triservice vapouriser is still a part of the military anaesthesia draw over equipment meant for field use whereas the Copper Kettle the first precision device is the fore-runner of the Tec 6 and Aladdin cassette vapouriser. Anaesthesia trainees if exposed to draw over techniques get a deeper understanding of equipment and improved skills for disaster situations. In the recent advanced versions of the vapouriser a central processing unit in the anaesthetic machine controls the operation by continuously monitoring and adjusting fresh gas flow through the vapouriser to maintain desired concentration of the vapour. Medknow Publications & Media Pvt Ltd 2013 /pmc/articles/PMC3821262/ /pubmed/24249878 http://dx.doi.org/10.4103/0019-5049.120141 Text en Copyright: © Indian Journal of Anaesthesia http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Review Article
Dhulkhed, Vithal
Shetti, Akshaya
Naik, Shraddha
Dhulkhed, Pavan
Vapourisers: Physical Principles and Classification
title Vapourisers: Physical Principles and Classification
title_full Vapourisers: Physical Principles and Classification
title_fullStr Vapourisers: Physical Principles and Classification
title_full_unstemmed Vapourisers: Physical Principles and Classification
title_short Vapourisers: Physical Principles and Classification
title_sort vapourisers: physical principles and classification
topic Review Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3821262/
https://www.ncbi.nlm.nih.gov/pubmed/24249878
http://dx.doi.org/10.4103/0019-5049.120141
work_keys_str_mv AT dhulkhedvithal vapourisersphysicalprinciplesandclassification
AT shettiakshaya vapourisersphysicalprinciplesandclassification
AT naikshraddha vapourisersphysicalprinciplesandclassification
AT dhulkhedpavan vapourisersphysicalprinciplesandclassification