ISO 11334-1:1994
(Main)Walking aids manipulated by one arm — Requirements and test methods — Part 1: Elbow crutches
Walking aids manipulated by one arm — Requirements and test methods — Part 1: Elbow crutches
Specifies requirements and test methods for elbow crutches fully equipped with handgrip and tip. Also gives the requirements relating to safety, ergonomics, performance, marking and labelling. The tests are based on everyday usage of elbow crutches when performing the through-swing gait.
Aides à la marche manipulées avec un bras — Prescriptions et méthodes d'essai — Partie 1: Cannes à appui antibrachial
La présente partie de l'ISO 11334 fixe les prescriptions et méthodes d'essai relatives aux cannes à appui antibrachial, totalement équipées d'une poignée et d'un embout. Les méthodes prescrivent les essais de résistance à la fatigue, de séparation, de résistance à la charge statique et de fragilisation à basse température. La présente partie de l'ISO 11334 fixe également les prescriptions en matière de sécurité, d'ergonomie, de performances, de marquage et d'étiquetage. Les essais sont fondés sur un emploi quotidien des cannes à appui antibrachial dans des conditions de marche pendulaire.
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 113344
First edition
1994-11-15
Walking aids manipulated by one arm -
Requirements and test methods -
Part 1:
Elbow crutches
Aides 2 Ia marche manipukes avec un bras - Prescriptions et methodes
d ’essai -
Partie 1: Cannes 2 appui antibrachial
Reference number
ISO 11334-1:1994(E)
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ISO 11334=1:1994(E)
Contents
Page
1
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Scope
1
reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . . . . . . . . . . . . . . . . .*.
Normative
1
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Definitions
2
.......................................
Requirements and recommendations
.......................... 5
Test methods .
7
.................................. ..............................
Marking and labelling
7
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Test report .
0 ISO 1994
All rights reserved. Unless otherwise specified, no part of this pubiication may be reproduced
or utilized in any form or by any means, electronrc or mechanrcai, rncluding photocopyrng and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
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0 ISO ISO 1133401:1994(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in Iiaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 11334-1 was prepared by Technical Committee
ISO/TC 173, Technical Systems and aids for disabled or handicapped per-
sons.
ISO 11334 consists of the following Parts, under the general title Walking
aids manipulated by one arm - Requiremen ts and test methods:
- Part 7: Elbow crutches
- Part 2: Axillary crutches
. . .
Ill
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INTERNATIONAL STANDARD 0 ISO
ISO 11334~1:1994(E)
Walking aids manipulated by one arm -
Requirements and test methods -
Part 1:
Elbow crutches
3.1 elbow crutch: Crutch with one leg, a handle and
1 Scope
forearm support. Classification No.: 12 03 06 accord-
ing to ISO 9999.
This part of ISO 1 i334 specifies requirements and
test methods for elbow crutches fully equipped with
3.2 crutch size: Size of crutch in accordance with
handgrip and tip. The methods specify testing of fa-
table 1.
tigue, Separation, static load capacity and resistance
to low temperature embrittlement. This part of
ISO 11334 also gives the requirements relating to
3.3 handle; handgrip: That part of the crutch which
safety, ergonomics, Performance, marking and label-
is normally held in the hand when the crutch is in use.
ling. The tests are based on everyday usage of elbow
crutches when performing the through-Swing gait.
3.4 handgrip support line: Line drawn through the
lowest Points, if any, at each end of that part of the
handle on which the hand rests.
2 Normative reference
3.5 handgrip length: Distance, h, measured be-
tween the two lowest Points on the handgrip support
The following Standard contains provisions which,
line. (See figure 2.)
through reference in this text, constitute provisions
of this part of ISO 11334. At the time of publication,
3.6
the edition indicated was valid. All Standards are sub- handgrip width: Width of the handle measured
ject to revision, and Parties to agreements based on horizontally at the thickest Point where the hand rests.
(See figure 2.)
this part of ISO 11334 are encouraged to investigate
the possibility of applying the most recent edition of
the Standard indicated below. Members of IEC and
3.7 datum: That Point on the upper surface of the
ISO maintain registers of currently valid International
handle one-third of the length from the rear end of the
Standards.
handgrip length. (See figure 2.)
ISO 9999: 1992, Technicai aids for disabled persons
3.8 arm section: That part of the crutch which is
- Classifica tion.
above the inner end of the handgrip length.
3.9 leg section: That part of the crutch which is
below the inner end of the handgrip length.
3 Definitions
For the purposes of this International Standard, the 3.10 cuff: Forearm support as used on an elbow
following definitions apply, with reference to figures crutch to hold the forearm in the correct Position and
prevent sideways movement.
1, 2 and 3.
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0 ISO
ISO 11334=1:1994(E)
4.1.4 The cuff internal depth against the forearm
3.11 euff support line: Line drawn from the inner
shall be larger than half of the internal width.
end of the handgrip length and touching the inside
rear bottom face of the cuff at maximum extension
of the arm section. (See figure 1.) 4.1.5 The cuff internal height against the forearm
should be at least 40 mm.
3.12 cuff internal width: Maximum internal dimen-
sion, y, measured left to right. (See figure3.)
4.2 Handlelhandgrip
3.13 cuff internal depth: Internal dimension, X,
4.2.1 The handlelhandgrip may be adjustable but
measured front to back. (See figure3.)
shall be securely fixed when in use.
3.14 cuff internal height: Inside measurement, Z,
4.2.2 The shape and/or the material of the handgrip
of the cuff which is approximately parallel to the cuff
should prevent the hand from sliding when gripped.
support line and which supports the forearm. (See
figure 2.)
4.2.3 The handgrip width shall be not less than
25 mm and not more than 50 mm. This requirement
3.15 tip: That part of the crutch which is in contact
does not apply to anatomic handgrips.
with the ground.
4.2.4 The handgrip should be easy to clean, non-
3.16 leg section axis: Line drawn from the inner
absorbent and should not include known toxic com-
end of the handgrip length and through the centre of
ponents.
the tip at maximum extension of the leg section.
43 . Leg section and tip
3.17 arm section length: Distance, a, measured
between the inner end of the handgrip length and the
4.3.1 The leg section shall end in a tip of a design
highest Point where the cuff support line touches the
which will prevent the leg section from piercing
inside rear face of the cuff.
through it when tested in accordance with 5.3. The tip
shall be replaceable but shall be secure when fitted.
3.18 leg section length: Distance, 2, measured be-
tween the inner end of the handgrip length and the
The tip should be pliable, hard-wearing and have a
centre of the bottom of the tip.
high coefficient of friction against the walking surface.
The tip tread against the walking surface should be
3.19 support angle: Angle, CX, formed by the leg
such that any suction cup effect is avoided.
section axis and the cuff support line. (See figure 1.)
4.3.2 The part of the tip that is in contact with the
3.20 grip angle: Angle, /?, formed by the cuff sup-
walking surface shall have a minimum diameter of
port line and the handgrip support line. (See figure 1.)
35 mm.
4 Requirements and recommendations 4.4 Adjusting devices
4.4.1 The means of height adjustment shall not
4.1 Cuff
work loose when the crutch is tn use.
4.1.1 The cuff shall be securely fixed.
4.4.2 Esch of the height adjustments shall be clearly
marked with its maximum allowable elongation.
4.1.2 The inside dimensions of the cuff should be
so designed that the arm, even when covered with 4.4.3 lt should be possible to operate the means of
adjustment without the use of tools.
clothes, may with comparative ease be inserted into
and withdrawn from it. For the arm to escape, the cuff
shall have an opening in the front. lt shall be possible
4.5 Materials
to increase this opening to 75 mm without perma-
nently deforming the cuff by more than 5 mm.
4.U Structural load-carrying members moulded
fr
...
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