ASTM F1840-10(2016)
(Terminology)Standard Terminology for Surgical Suture Needles
Standard Terminology for Surgical Suture Needles
ABSTRACT
This terminology covers the general definitions of terms specific to stainless steel surgical suture needles.
SCOPE
1.1 This terminology covers general definitions for surgical needles.
General Information
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Designation: F1840 − 10 (Reapproved 2016)
Standard Terminology for
Surgical Suture Needles
This standard is issued under the fixed designation F1840; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope needle wire diameter, n—the gage or thickness of the needle
wire, measured at a location between the needle body and
1.1 This terminology covers general definitions for surgical
the attachment area, where either no or minimal work has
needles.
taken place.
2. Terminology
point, n—portion of the needle intended to initiate tissue
2.1 Definitions of Terms Specific to the Instrument (See Fig.
penetration.
1):
point configuration, n—the shape of the point. Some common
attachment area, n—portion of the needle where the attach-
point configurations include, but are not limited to (see Fig.
ment of the suture takes place. For example, eyed, drilled,
3): taper, trocar, blunt, spatulated, conventional cutting edge,
and channel.
reverse cutting edge, cutting taper, and side cutting needle.
body, n—central portion of the needle intended to be grasped
swage, n—the term used to describe any attachment method
by the needle holder.
that uses mechanical force to crimp the end of the needle and
chord length, n—the straight line distance between the two
firmly hold the suture in place.
ends of a curved needle.
2.2 Definitions of Terms Specific to Mechanical Properties
curvature, n—the shape of the needle viewed in profile. Some of a Surgical Needle:
common shapes include, but are not limited to: straight, ⁄2 finish, n—final surface visual appearance classified as follows:
1 1 3 1 5
curve or “ski,” ⁄8 circle, ⁄4 circle, ⁄8 circle, ⁄2 circle, ⁄8
bright or mirror finish, n—highly reflective surface.
circle, and compound curvature (see Fig. 2).
satin, matte, or black finish, n—reduced reflective surface (as
cutting edge, n—cutting edges are made of various geometric compared to bright or mirror finish) varying from a dull
appearance to a blackened surface.
shapes, that is, triangular, diamond, and hexagonal. The
various edges may be sharpened by the manufacturer de-
maximum bend moment—the greatest moment applied to a
pending on the user performance.
needle during a bend test.
needle length, n—the distance measured along the needle
needle ducility—a measure of the amount of plastic bending a
curvature from end to end.
needle can withstand.
needle radius, n—the radius of the uniformly curved portion
yield bend angle—the angle at which the yield bend moment
or portions of the needle measured from the centerline of the
occurs.
needle body.
yield bend moment—the amount of moment required to
1 initiat
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: F1840 − 10 F1840 − 10 (Reapproved 2016)
Standard Terminology for
Surgical Suture Needles
This standard is issued under the fixed designation F1840; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—“Typical Curvatures” figure was editorially included in May 2011.
1. Scope
1.1 This terminology covers general definitions for surgical needles.
2. Terminology
2.1 Definitions of Terms Specific to the Instrument (See Fig. 1):
attachment area, n—portion of the needle where the attachment of the suture takes place. For example, eyed, drilled, and channel.
body, n—central portion of the needle intended to be grasped by the needle holder.
chord length, n—the straight line distance between the two ends of a curved needle.
curvature, n—the shape of the needle viewed in profile. Some common shapes include, but are not limited to: straight, ⁄2 curve
1 1 3 1 5
or “ski,” ⁄8 circle, ⁄4 circle, ⁄8 circle, ⁄2 circle, ⁄8 circle, and compound curvature (see Fig. 2).
cutting egde,edge, n—cutting edges are made of various geometric shapes, that is, triangular, diamond, and hexagonal. The various
edges may be sharpened by the manufacturer depending on the user performance.
needle length, n—the distance measured along the needle curvature from end to end.
needle radius, n—the radius of the uniformly curved portion or portions of the needle measured from the centerline of the needle
body.
needle wire diameter, n—the gage or thickness of the needle wire, measured at a location between the needle body and the
attachment area, where either no or minimal work has taken place.
point, n—portion of the needle intended to initiate tissue penetration.
point configuration, n—the shape of the point. Some common point configurations include, but are not limited to (see Fig. 3):
taper, trocar, blunt, spatulated, conventional cutting edge, reverse cutting edge, cutting taper, and side cutting needle.
swage, n—the term used to describe any attachment method that uses mechanical force to crimp the end of the needle and firmly
hold the suture in place.
2.2 Definitions of Terms Specific to Mechanical Properties of a Surgical Needle:
finish, n—final surface visual appearance classified as follows:
bright or mirror finish, nn——highly reflective surface.
satin, matte, or black finish, nn——reduced reflective surface (as compared to bright or mirror finish) varying from a dull
appearance to a blackened surface.
maximum bend moment—the greatest moment applied to a needle during a bend test.
needle ducility—a measure of the amount of plastic bending a needle can withstand.
yield bend angle
...
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