ASTM F921-10

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.
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Designation:F921–85(Reapproved 2008) Designation: F921 – 10
Standard Terminology Relating to
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Hemostatic Forceps
ThisstandardisissuedunderthefixeddesignationF921;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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´ NOTE—Editorial changes were made throughout in June 2008.
1. Scope
1.1 This terminology covers basic terms and considerations for the components of hemostatic forceps. Instruments in this
terminology are limited to those fabricated from stainless steel and for general surgical procedures. See Fig. 1 and Fig. 2.
2. Referenced Documents
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2.1 ASTM Standards:
F899 Specification for Wrought Stainless Steels for Surgical Instruments
2.2 ISO Standard:
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ISO 7151 Instruments for Surgery—Hemostatic Forceps—General Requirements
3. Terminology
Definitions of Hemostatic Forceps
box lock—the junction where the female member and the male member are secured, forming the pivoting feature.
distal end—the working end, comprised of two jaws, that is furthest from the surgeon when in use.
female member—the component that accommodates and encloses the male member at the box lock junction.
finger rings—the feature of both the female and the male members that forms the gripping surface for the surgeon (commonly
classified as the ring-handled feature in ISO 7151).
hemostatic forceps—an instrument, available in various sizes and configurations, used in surgical procedures for the compression
of blood vessels and the grasping of tissue.
jaws—parts that contain serrations to interrupt the flow of blood through any vessel.
male member—the component that is inserted through the female member and secured to the female member at the box lock
junction.
proximal end—that portion of the instrument that is closest to the surgeon when in use.
ratchets—theportionofboththefemaleandmalemembersattheproximalendpossessinginclinedteethandthatformthelocking
mechanism.
serrations or teeth—the gripping or clamping surfaces of the jaws or ratchets.
shank—the part of either the female or the male member that yields configuration, length, and leverage.
Definitions of Physical Properties of Hemostatic Forceps
chamfer—the broken edge of the jaw serrations and the external edges of the box lock surfaces.
corrosion—the formation of rust.
elasticity—the capacity of the instrument to undergo induced stress without permanent distortion or breakage of any component.
finish—the final surface visual appearance of the instrument classified as follows: (1) bright or mirror finish—highly reflective
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This terminology is under the jurisdiction of ASTM Committee F04 on Medical and Surgical Materials and Devices and is the direct responsibility of Subcommittee
F04.33 on Medical/Surgical Instruments.
Current edition approved Feb. 1, 2008. Published March 2008. Originally approved in 1985. Last previous edition approved in 2002 as F921–85 (2002). DOI:
10.1520/F0921-85R08E01.
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Current edition approved June 1, 2010. Published July 2010. Originally approved in 1985. Last previous edition approved in 2008 as F921 – 85 (2008) . DOI:
10.1520/F0921-10.
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For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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F921 – 10
FIG. 1 Components of a Hemostatic Forceps
surfaces. (2) satin, matte, or black finish—reduced reflected surfaces (as compared to bright or mirror finish). finish, n—final
surface visual appearance classified as follows:
bright or mirror finish, n—highly reflective surface.
satin, matte, or black finish, n—reduced reflective surface (as compared to bright or mirror finish) varying from a dull
appearance to a blackened surface.
hardness—a measurement of the resistance to indentation.
interdigitation—the interlocking or meshing of the female and male jaw serrations.
jaw alignment—the positioning of the female and male jaws with respect to int
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