ISO 5356-1:1987
(Main)Anaesthetic and respiratory equipment — Conical connectors — Part 1: Cones and sockets
Anaesthetic and respiratory equipment — Conical connectors — Part 1: Cones and sockets
Matériel respiratoire et d'anesthésie — Raccords coniques — Partie 1: Raccords mâles et femelles
General Information
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Standards Content (Sample)
IS0
INTERNATIONAL STANDARD
5356-1
First edition
1987-06-1 5
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
ME>KAYHAPOAHAR OPTAHMBAUMR Il0 CTAHJJAPTMBAUMM
Anaesthetic and respiratory equipment -
Conical connectors -
Part 1 :
Cones and sockets
Matériel respiratoire et d'anesthésie - Raccords coniques -
Partie 1 : Raccords mâles et femelles
Reference number
IS0 5356-1 : 1987 (E)
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IS0 5356-1 : 1987 (E)
INTERNATIONAL STANDARD
Anaesthetic and respiratory equipment -
Conical connectors -
Part I :
Cones and sockets
relevant International Standards for devices and items of equip-
O Introduction
ment (see clause 9).
IS0 5356 comprises the following two parts :
0.1
0.4 Figures 1 to 5 detailing the dimensions and tolerances of
Part 1 : Cones and sockets.
metal conical connectors have been prepared in accordance
with the principles given in IS0 3040.
Part 2 : Screw-threaded weight-bearing connectors.
Annex A gives recommendations for materials and is not an
integral part of the standard.
0.2 In clinical practice several breathing attachments may
have to be joined together to provide a suitable breathing
Annex B includes figures detailing plug and ring gauges that
system. Items of medical equipment, such as a humidifier or a
may be used to check the sizes of metal conical connectors and
spirometer, are often incorporated into the breathing system
is not an integral part of the standard.
which may also be connected to an anaesthetic gas scavenging
system. Connections for these purposes are usually, though
not invariably, cone and socket joints and a lack of standardiza-
1 Scope and field of application
tion of these connections has given rise to problems of inter-
changeability when connecting equipment made by different
This part of IS0 5356 specifies basic dimensional and gauging
manufacturers.
requirements for cones and sockets intended for use in
breathing systems, anaesthetic gas scavenging systems and
This part of IS0 5356 gives requirements for five sizes of conical
vaporizers.
15 mm and 22 mm sizes are
connector of which only the
intended for general use in breathing systems. The 23 mm size
NOTE - Requirements for screw-threaded weight-bearing conical
is intended for use with vaporizers which are unsuitable for use
connectors are specified in IS0 B56-2.
in the breathing system (see IS0 5358); usually because they
impose a high resistance to gas flow. The 19 mm and 30 mm
sizes are intended for the connection of a breathing system to
2 References
an anaesthetic gas scavenging system.')
IS0 2878, Rubber, vulcanized - Antistatic and conductive
An important consideration is that conical connections are products - Determination of electrical resistance.
secure but are nevertheless disconnectable by the user. The
IS0 2882, Rubber, vuicanized - Antistatic and conductive
use of connectors meeting the requirements of this pert of
products for hospital use - Electrical resistance limits.
IS0 5356 will not necessarily prevent their being disconnected
accidentally, although accessory devices for this purpose may
be incorporated.
3 Definitions
It should be noted that compliance with this part of IS0 53%
For the purposes of this part of IS0 5356, the following defin-
does not preclude the possibility that some flow direction sen-
sitive components may be mis-connected and it is stressed that tions apply.
the avoidance of this hazard has to remain the responsibility of
NOTE - Definitions have been taken from IS0 4135.
the user.
3.1 breathing attachments : Components intended to
0.3 Requirements for the application of conical connectors
are not included in this part of IS0 5356 but are given in the make up or complete a breathing system.
1) An International Standard on anaesthetic gas scavenging systems is currently being prepared.
1
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IS0 5356-1 : 1987 (E)
to improve the security of the attachment of the socket to the dale
3.2 breathing system : Those gas pathways continuously
conical connector.
or intermittently in communication with the patient's respiratory
tract during any form of ventilation.
NOTES 5.3.3 All male conical connectors to which it is intended to at-
tach a face mask shall incorporate a shoulder or equivalent con-
In practice a breathing system usually extends from
1
struction as shown in figure 3b).
a) the point of supply') of a controlled gas mixture, for example
the common gas outlet of an anaesthetic machine, or
If a circumferential groove or grooves are incorporated in yhe
b) the fresh-gas inlet of a circle system, lung ventilator, T-piece,
surface of a male conical connector, the total width of the
etc., or
groove or grooves at the surface shall not exceed 8 mm. ,
c) the fresh-gas inlet of a manually-operated resuscitator.
2 It usually extends to the point at which gas mixture escapes to at-
NOTE - The design may permit the fittillg of a device to ensure the
mosphere or a gas scavenging system, for example from an APL valve,
secure attachment of tracheal (or tracheostomy) tube connectors.
the open end of a T-piece, etc.
3 Gas pathways exclusively concerned with gas scavenging systems
are not regarded as a part of the breathing system.
5.4 Conical connectors of 23 mm size
The dimensions of conical connectors of 23 mm size made of
4 Materials metal shall be as shown in figure 4.
If components are made of anti-static materials, they shall
comply with the requirements given in IS0 2882 when tested by
5.5 Conical connectors of 30 mm size
the methods described in IS0 2818.
The dimensions of conical connectors of 30 mm size made of
metal shall be as shown in figure 5.
5 Conical connectors made of metal
NOTES
6 Conical connectors made of materials other
1 Metal connectors include those of composite materials where the
that metal
mating surfaces are metal.
2 Conical connectors of 19 mm, 23 mm and 30 mm size are not
breathing system components.
6.1 The axial length of conical connectors of 15 mm ahd
3 See annex 6 for dimensions of plug and ring gauges. 22 mm sizes made of materials other than metal, for example of
polyamide, polyacetal, polycarbonate, polysulfone, etc., shall
be as shown in figures 1 and 3, respectively. Other dimensions
5.1 Conical connectors of 15 mm size
may be varied from those shown in figures 1 and 3 providbd
that both 15 mm and 22 mm connectors comply with the re-
The dimensions of conical connectors of 15 mm size made of
quirement laid down in 6.2 and that 22 mm connectors comQly
metal shall be as shown in figure 1.
with the requirement laid down in 5.3.2.
5.2 Conical connectors of 19 mm size
6.2 Conical connectors of 15 mm and 22 mm sizes made of
The dimensions of conical connectors of 19 mm size made of
materials other than metal shall comply with the requireme ts
metal shall be as shown in figure 2.
laid down in 6.3 when they are type tested with gauges havi g
dimensions as shown in figures 6 and 7, respectively. 1
5.3 Conical connectors of 22 mm size
NOTE - Since connectors made from plastics materials may v ry
enormously in their physical characteristics, it is not considered pr 1 c-
5.3.1 The dimensions of conical connectors of 22 mm size
made of metal, with or without a recess in the male compo-
nent, shall be as shown in figure 3a) or 3b), as appropriate.
5.3.2 Male conical connectors of 22 mm size, with the excep-
tion of those intended for connection with a face mask, shall in-
corporate the recess as shown in figure 3a).
NOTE - The recess is to accommodate the end of a female connector
made of elastomeric material2) or to permit the fitting of other devices when selecting suitable materials.
1) In some situations, particularly in lung ventilators, this point may be inside a piece of equipment and should not be confused with a connecti n
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port fitted elsewhere, for example on the casing of a ventilator.
2) The term "elastomeric material" includes soft rubber (natural or synthetic) and some soft plastics materials, for example polyvinyl chloride a d
n
low-density polyethylene.
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IS0 5356-1 : 1987 (E)
6.3 When the connector is engaged in the appropriate plug 9 Bibliography
or ring gauge, shown in figures 6 and 7, by applying an axial
The following International Standards were used as reference
force of 35 I 3,5 N for 15 mm connectors and 50 I 5 N for
documents in the development of this part of IS0 5356 :
22 mm connectors, and, while maintaining the same force,
rotating the connector up to 20°, its leading edge shall lie be-
IS0 3040, Technical drawings - Dimensioning and toleran-
tween the minimum and maximum diameter steps of the
cing cones.
gauge. The connectors and gauges shall be maintained at a
temperature of 20 I 3 OC during this test.
IS0 4135, Anaesthesiology - Vocabulary.
The following International Standards for devices and items of
NOT
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