ASTM F921-1985(2008) Standard Terminology Relating to Hemostatic Forceps.pdf

1、Designation: F 921 85 (Reapproved 2008)Standard Terminology Relating toHemostatic Forceps1This standard is issued under the fixed designation F 921; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numbe

2、r in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This terminology covers basic terms and considerationsfor

3、the components of hemostatic forceps. Instruments in thisterminology are limited to those fabricated from stainless steeland for general surgical procedures. See Fig. 1 and Fig. 2.2. Referenced Documents2.1 ASTM Standards:2F 899 Specification for Wrought Stainless Steels for Surgi-cal Instruments2.2

4、 ISO Standard:ISO 7151 Instruments for SurgeryHemostatic ForcepsGeneral Requirements3Definitions of Hemostatic Forceps3. Terminologybox lockthe junction where the female member and the malemember are secured forming the pivoting feature.distal endthe working end, comprised of two jaws, that isfurthe

5、st from the surgeon when in use.female memberthe component that accommodates andencloses the male member at the box lock junction.finger ringsthe feature of both the female and the malemembers that forms the gripping surface for the surgeon(commonly classified as the ring-handled feature in ISO7151)

6、.hemostatic forcepsan instrument, available in various sizesand configurations, used in surgical procedures for thecompression of blood vessels and the grasping of tissue.jawsparts that contain serrations to interrupt the flow ofblood through any vessel.male memberthe component that is inserted thro

7、ugh thefemale member and secured to the female member at the boxlock junction.proximal endthat portion of the instrument that is closest tothe surgeon when in use.ratchetsthe portion of both the female and the male mem-bers possessing inclined teeth that forms the locking mecha-nism.serrations or te

8、eththe gripping or clamping surfaces of thejaws.shankthe part of either the female or the male member thatyields configuration, length, and leverage.Definitions of Physical Properties of Hemostatic Forcepschamferthe broken edge of the jaw serrations and theexternal edges of the box lock surfaces.cor

9、rosionthe formation of rust.elasticitythe capacity of the instrument to undergo inducedstress without permanent distortion or breakage of anycomponent.finishthe final surface visual appearance of the instrumentclassified as follows:(1) bright or mirror finishhighly reflective surfaces.(2) satin, mat

10、te, or black finishreduced reflected surfaces(as compared to bright or mirror finish).hardnessa measurement of the resistance to indentation.interdigitationthe interlocking or meshing of the female andmale jaw serrations.jaw alignmentthe positioning of the female and male jawswith respect to interdi

11、gitation (related to box lock functionand ratchet performance).passivationthe changing of the chemically active surface ofstainless steel to a much less reactive state.stainless steelthe raw material on the instrument that is inaccordance with Specification F 899.1This terminology is under the juris

12、diction ofASTM Committee F04 on Medicaland Surgical Materials and Devices and is the direct responsibility of SubcommitteeF04.33 on Medical/Surgical Instruments.Current edition approved Feb. 1, 2008. Published March 2008. Originallyapproved in 1985. Last previous edition approved in 2002 as F 921 85

13、 (2002).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute

14、 (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.FIG. 1 Components of a Hemostatic ForcepsF 921 85 (2008)2FIG. 2 Typical Types of Serrations and Teeth for Hemos

15、tatic ForcepsF 921 85 (2008)3APPENDIX(Nonmandatory Information)X1. RATIONALEX1.1 Because there is a clinical need for a variety ofinstruments for general and surgical procedures, they aremanufactured in various configurations and from various typesof stainless steel. For practical purposes and patie

16、nt safety,these devices supplied by different manufacturers necessitate adefined system of categorization, materials, and performancerequirements.X1.2 This is the first standard of a multiple part standard thatdefines the components of a hemostatic forceps designed forrepeated use, including various

17、 terminology that describesperformance considerations.X1.3 Box LockThe box lock construction defined in thisterminology is the most commonly produced junction forhemostatic forceps. However, the intent is not to prohibittechnological innovation or to exclude instruments manufac-tured with other type

18、s of pivoting features such as lap joints.X1.4 Disposable instruments are not included in this termi-nology, nor are the instruments designed for specific surgery.However, a part or all of the terminology defined herein may beapplicable to specific and disposable surgical instruments.This standard i

19、s subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International He

20、adquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This s

21、tandard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F 921 85 (2008)4