EN ISO 9173-1:1995
(Main)Dental extraction forceps - Part 1: Screw and pin joint types (ISO 9173-1:1991)
Dental extraction forceps - Part 1: Screw and pin joint types (ISO 9173-1:1991)
Zahnärztliche Extraktionszangen - Teil 1: Zangenmodelle mit Schraubschluß und Stiftgelenk (ISO 9173-1:1991)
Dieser Teil der ISO 9173 legt die Maße und die Leistungsanforderungen für zahnärztliche Extraktionszangen mit Schraub- oder Stiftschlüssen fest, die allgemein als Englische Zangenmodelle bekannt sind.
Daviers à usage dentaire - Partie 1: Types d'articulations à vis ou à tourillon (ISO 9173-1:1991)
La CEI 61169-40:2010 fournit des informations et des règles en vue de l'établissement de spécifications particulières de connecteurs RF de la série 2.4, ainsi que la spécification particulière cadre pro-forma. Elle prescrit également les dimensions des faces d'accouplement pour des connecteurs haute performance - classe 1, des détails dimensionnels des connecteurs d'essai normalisés - classe 0, des informations de calibrage et d'essais choisis dans la CEI 61169-1 applicables à toutes les spécifications particulières ayant trait aux connecteurs RF de la série 2.4. Cette première édition annule et remplace la CEI/PAS 61169-40, publiée en 2008, dont elle constitue une révision mineure. Les changements par rapport au PAS sont seulement éditoriaux.
Dental extraction forceps - Part 1: Screw and pin joint types (ISO 9173-1:1991)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 9173-1:2000
01-januar-2000
Dental extraction forceps - Part 1: Screw and pin joint types (ISO 9173-1:1991)
Dental extraction forceps - Part 1: Screw and pin joint types (ISO 9173-1:1991)
Zahnärztliche Extraktionszangen - Teil 1: Zangenmodelle mit Schraubschluß und
Stiftgelenk (ISO 9173-1:1991)
Daviers a usage dentaire - Partie 1: Types d'articulations a vis ou a tourillon (ISO 9173-
1:1991)
Ta slovenski standard je istoveten z: EN ISO 9173-1:1995
ICS:
11.060.20 =RERWHKQLþQDRSUHPD Dental equipment
SIST EN ISO 9173-1:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 9173-1:2000
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SIST EN ISO 9173-1:2000
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SIST EN ISO 9173-1:2000
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SIST EN ISO 9173-1:2000
INTERNATIONAL ISO
STANDARD 9173-1
First edition
1991-07-01
Dental extraction forceps
Part 1:
Screw and pin joint types
Daviers a usage dentaire -
Partie 7: Types d’articulations 2 vis ou h Tourklon
Reference number
ISO 9173-1 : 1991 (E)
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (EI
Page
Contents
1
1 Scope .
............................................... 1
2 Normative references
1
3 Construction materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.................................. 1
4 Requirements for physical properties
.................................... 1
4.1 Heat treatment and hardness
........................................... 1 .
4.2 Mechanical strength
.... 1
4.3 Resistance to corrosion by boiling water, autoclaving and dry heat
......................................... 1
4.4 Requirements for joint.
2
4.5 Finish .
....................... 3
5 Key to dimensions and illustrations for all forceps
4
......................................
5.1 Forceps with circular joint
.......................................... 5
5.2 Forceps with pin joint
......................................... 5
5.3 Forceps with half-joint
................................................ 6
5.4 Handleshapes
7
............................................
6 Designs and dimensions.
7
6.1 Handles .
7
........................................................
6.2 Beaks
........................... 8
6.3 Upper forceps with circular joint : adult
........................... 10
6.4 Lower forceps with circular joint : adult
...................................... 11
6.5 Children’s Pattern forceps
0 ISO 1991
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any
means, electronie or mechanical, including photocopying and microfilm, without Permission in
writing from the publisher.
International Organization for Standardization
Gase postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (E)
.......................................... 13
6.6 Forceps with pin joint
6.7 Forceps with half-joint . 14
15
7 Testmethods .
15
7.1 Mechanical strength .
16
7.2 Corrosion test .
................................. 16
7.3 Dry heat test and autoclave test.
..................................... 16
7.4 Joint opening/closing forte
8 Marking and packing . 16
9 Sampling . 16
Annexes
A Mechanical strength test. . 17
B Sampling . 18
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (El
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards bodies (ISO member bedies). 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, govern-
mental and non-governmental, in liaison 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 9173-1 was prepared by Technical Committee ISO/TC 106,
Dentistry, Sub-Committee SC 4, Dental instruments.
ISO 9173 consists of the following Parts, under the general title, Dental extraction
forceps :
- Part 7: Screw and pin joint types
- Part 2: Box joint types
- Part3: . . .
Annexes A and B are for information only.
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (EI
Introduction
For many decades, “English” Pattern forceps have been widely used by the world-wide
dental community. The popularity of these forceps has been such that a number of
manufacturers, from various countries, have produced their own Versions. Quite nat-
urally, each manufacturer attempted to introduce an element of individuality into the
design; but as a consequence subtle dimensional changes occurred between forcep
Patterns produced by different manufacturers.
This part of ISO 9173 is based on commercial specifications and illustrates the popular
Patterns of forceps currently used in dental practice; it is by no means comprehensive
and details of additional Patterns may form the basis for future Parts in this series.
The Patterns described are not intended to specify a definitive design or formula but
rather to reflect the range of dimensions currently used by manufacturers. For this
reason some tolerantes are rather generous and manufacturers are requested to work
to closer tolerantes on individual dimensions.
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SIST EN ISO 9173-1:2000
ISO9173-1 : 1991 (EI
INTERNATIONAL STANDARD
Dental extraction forceps -
Part 1:
Screw and pin joint types
4 Requirements for physical properties
1 Scope
This part of ISO 9173 specifies the dimensions and Performance 4.1 Heat treatment and hardness
requirements for dental extraction forceps with screw or pin
joints, commonly known as English Pattern forceps.
4.1.1 The component Parts of the instruments, with the ex-
ception of the pins and screws, shall be heat-treated to attain a
Rockwell hardness value of 42 HRC to 50 HRC when tested in
accordance with ISO 6508.
4.1.2 Mating surfaces on the same instrument, such as those
2 Normative references
on opposite beaks, shall not vary in hardness by more than
3 units on the Rockwell hardness scale C.
The following Standards contain provisions which, through
reference in this text, constitute provisions of this part of
ISO 9173. At the time of publication, the editions indicated
4.2 Mechanical strength
were valid. All Standards are subject to revision, and Parties to
agreements based on this part of ISO 9173 are encouraged to When tested in accordance with 7.1, neither the forcep or any
investigate the possibility of applying the most recent editions part thereof shall fracture, or show any sign of Cracks or
of the Standards indicated below. Members of IEC and ISO
acquire a permanent set sf dimension b3 greater than 0,2 mm.
maintain registers of currently valid International Standards.
4.3 Resistance to corrosion by boiling water,
ISO 6508 : 1986, Metallic materials - flardness test -
autoclaving and dry heat
Rockwelf test fscales A - B - C - D - E - F - G - H - KL
4.3.1 When subjected to the procedure described in 7.3, the
ISO 7153-1 : 1983, Instruments forsurgery - Metallicmaterials
instrument shall show no Change in hardness or mechanical
-
Part 7: Stainless steel.
strength in any part or acquire a permanent set of dimension b3
greater than 0,2 mm.
4.3.2 After being subjected to the procedure described in 7.2
and 7.3, the instrument shall show no evidente of corrosion
(i.e. neither general or localized rust formation on the surface
3 Construction materials
nor pitting ).
3.1 Component Parts
NOTE - Discoloration due to water marking does not constitute
evidente of corrosion.
With the exception of the pins and screws (see 3.21, the com-
ponent Parts shall be made of stainless steel of grade B or C of
4.4 Requirements for joint
ISO 7153-1.
4.4.1 The forcep joint shall be so constructed so that the
instrument opens smoothly, without jerking, when gripped in
one hand and levered open and closed with the index finger.
3.2 Pins and screws
4.4.2 When tested in accordance with 7.4, the opening and
The pins and screws shall be made of stainless steel Chosen, at
closing moment of forte shall be between 0,20 N=m and
the discretion of the manufacturer, from the grades specified in
0,68 N-m.
ISO 7153-1.
1
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (E)
non-functional sharp edges when inspected using normal
4.4.3 When the extremity of each handle is gripped between
Vision (corrected if necessary) without magnification.
the index finger and thumb of each hand, there shall be no
perceptible lateral movement of the handles in any Position
between fully open and fully closed.
4.5.2 Beaks
4.5 Finish
When the inner or crown space of the forceps is serrated or
textured, the serrations or texture shall be uniform in depth
4.5.1 General
throughout their length and consistent within any one Pattern
rinding marks, of forceps when examined using normal Vision (corrected if
All surfaces shall be free from pores, Cracks, g
necessary) without magnification.
residual scale and inclusions a nd shall also be free from any
2
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (EI
5 Key to dimensions and iilustrations for all forceps
Key to figures 1 to 13
Table 1 -
Dimension Measurement Point Figures
At maximum width excluding protruding Pins, screws and rivets
a Joint thickness 2, 7, 9
As illustrated
b,‘) Beak thickness 2, 3, 4, 9
At maximum width with forceps closed 1
bz’ ) Crown space width
Beak Separation At minimum gap with forceps closed 1
b,‘)
Forcep width At maximum distance across handles with forceps closed 1
b4
Handle width At base of handle where radius blends and maximum width 2
b5
occu rs
Beak width (combined) At maximum distance across both beaks when forceps closed 1
b6
At maximum width for half- and pin joint forceps
Joint width
6, 8
b7
Joint diameter for forceps with circular As illustrated 1
4
joints
h,‘) Beak offset 1 If h, = 0, from furthest Point of beak tip to forcep centreline
3, 4
If h, # 0, from furthest Point of beak tip to measurement Point
of h, (i.e. on first bend in beak)
h,’ ’ Beak offset 2 From furthest Point on first bend to centreline of forcep 4
From furthest Point on handle to centreline of forcep
Handle offset 11, 12
h3
As illustrated 13
As shown in plan view illustrated
Overall length
1, 3, 5, 6, 8
11
l*‘) From beak tip to Pivot centre
Overall beak length
1, 3, 5, 6, 8
13’) Working length of beak From beak tip to outside diameter of the joint
2, 3, 5, 6
14’) Thickness of ramp,/height of step Centreline between outside diameter of joint and crown space
2, 3
Scoping length From beak tip to limit of depression 2
15
From beak tip to limit of serrations within scoping
Length of serrations 2
'6
t’) Depth of scoping From edge of beak to lowest Point in scoped section
2
1) The tolerante on this dimension is critical and will have a direct effect on the Performance.
3
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (EI
5.1 Forceps with circular joint
Figure 1
Figure 2
Figure 4
4
--
L----
----
Figure 5
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (El
5.2 Forceps with pin joint
I
--_--
Figure 6
Figure 7
5.3 Forceps with half-joint
Figure 8
Figure 9
5
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SIST EN ISO 9173-1:2000
ISO 9173-1 : 1991 (E)
5.4 Handle shapes
5.4.1 Straight handle (see figure 10)
Figure 10
5.4.2 Curved handle: type 1 (see figure 11)
Figure 11
5.4.3 Curved handle: type 2 (sec figure 12)
NOTE - This type is also known as Read Pattern handles.
Figure 12
6
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SIST EN ISO 9173-1:2000
ISO 91734 : 1991 (E)
5.4.4 Curved handle: type 3 (see figure 13)
Figure 13
6 Designs and dimensions NOTE - The Pattern numbers shown against the following drawings
relate to English forcep Pattern numbers which have been in common
use for several decades. As will be Seen, the numbers do not run
6.1 Handles
consecutively throughout the drawings: this is because this patt of
ISO 9173 covers only the most popular Patterns.
The handles shall be as illustrated in figures 1 to 13 and shall
have the dimensions given in tables 2 to 6.
6.2 Beaks
For the various Pattern numbers, the beaks shall have the
designs shown in the following drawings (see 6.3 to 6.7) and
shall have the dime
...
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