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...
Autores principales: | , , , |
---|---|
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 |