Standard Specification and Test Methods for Metallic Medical Bone Screws
NORMA vydaná dňa 1.6.2023
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Designation standards: ASTM F543-23
Publication date standards: 1.6.2023
The number of pages: 22
Approximate weight : 66 g (0.15 lbs)
Country: American technical standard
Kategória: Technické normy ASTM
This specification provides requirements for materials, finish and marking, care and handling, and the acceptable dimensions and tolerances for metallic bone screws that are implanted into bone. There are a large variety of medical bone screws currently in use, the following type of screws are used: type HA - spherical undersurface of head, shallow, asymmetrical buttress thread, and deep screw head, type HB - spherical undersurface of head, deep, asymmetrical buttress thread, and shallow screw head, type HC - conical undersurface of head, symmetrical thread, and type HD - conical undersurface of head, symmetrical thread. The torsional strength, breaking angle, axial pullout strength, insertion torque, self-tapping force, and removal torque shall be tested to meet the requirements prescribed.
Keywords:
bone screw, dimensions, insertion, performance requirements, pullout, static, test methods, torsion,, ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)