BS 4272-2:1996:2003 Edition
$102.76
Anaesthetic and analgesic machines – Specification for intermittent (demand) flow analgesic machines for use with 50/50% (V/V) nitrous oxide and oxygen
| Published By | Publication Date | Number of Pages |
| BSI | 2003 | 16 |
This Part of BS 4272 specifies general design and performance requirements for analgesic machines of the intermittent flow (demand flow) type for use with 50/50 % (V/V) mixture of oxygen and nitrous oxide contained in one cylinder, (hereinafter referred to as “analgesic machines”).
This standard applies to analgesic machines intended for:
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connection directly to a high-pressure (approximately 17 MPa) cylinder; and
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connection to a low-pressure (280 kPa to 600 kPa) supply from a medical gas pipeline system, or a similar source, filled from cylinder(s).
Additional requirements for portable machines are included.
This standard applies to analgesic machines which are intended to be used under supervision for the self-administration of an analgesic mixture in response to the patient’s inspiratory effort, e.g. in obstetric practice or in emergency situations. It does not apply to analgesic machines with means to initiate gas flow other than by the patient’s inspiratory effort.
This standard does not give requirements for the composition of the gas mixture, or for the markings on the gas cylinder.
NOTE The gas is pre-mixed and specified in pharmacopoeia monographs. The markings on the gas cylinder are specified in BS EN 850.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 5 | 1 Scope 2 Normative references 3 Definitions 3.1 intermittent flow analgesic machine; demand flow analgesic machine 3.2 direct probe 3.3 remote probe 3.4 demand valve |
| 6 | 4 Materials 5 Resistance to mechanical hazards 6 Legibility of marking on controls 7 Performance after cleaning and sterilization or disinfection 8 Connections for gas supply 8.1 Analgesic machine for connection to a cylinder Figure 1 |
| 7 | 8.2 Analgesic machine for connection to a medical gas pipeline 9 Patient connection port 10 Exhaust port |
| 8 | 11 Resistance to environmental conditions 12 Performance 13 Additional requirements for portable analgesic machines |
| 9 | 14 Marking 15 Instructions for use |
| 10 | Annex A (normative) Test methods A.1 General A.2 Drop test A.3 Test for pressure gauge integrity |
| 11 | A.4 Measurement of inspiratory flow and differential pressure |
| 12 | Figure A.1 |
| 13 | A.5 Measurement of expiratory resistance Figure A.2 |
| 14 | A.6 Test of handle strength |
