SURGICAL NEEDLES FROM HIGH STRENGTH STEEL ALLOY AND METHOD OF PRODUCING THE SAME

A SURGICAL NEDLE IS DISCLOSED. THE NEEDLE COMPRISES A COLD DRAWN, AGE HARDENED IRON-BASE ALLOY CONTAINING, BY WEIGHT, ABOUT 9-13 PER CENT CHROMIUM, ABOUT 8-16 PER CENT COBALT, ABOUT 4-8 PER CENT MOLYBDENUM, ABOUT 4-8 PER CENT NICKEL, THE BALANCE BEING ESSENTIALLY IRON AND INCIDENTAL IMPURITIES, IN W...

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1. Verfasser:	LEE P. BENDEL
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY DIAGNOSIS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FERROUS OR NON-FERROUS ALLOYS HUMAN NECESSITIES HYGIENE IDENTIFICATION MAKING NEEDLES, PINS OR NAILS OF METAL MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL PERFORMING OPERATIONS PUNCHING METAL SURGERY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	A SURGICAL NEDLE IS DISCLOSED. THE NEEDLE COMPRISES A COLD DRAWN, AGE HARDENED IRON-BASE ALLOY CONTAINING, BY WEIGHT, ABOUT 9-13 PER CENT CHROMIUM, ABOUT 8-16 PER CENT COBALT, ABOUT 4-8 PER CENT MOLYBDENUM, ABOUT 4-8 PER CENT NICKEL, THE BALANCE BEING ESSENTIALLY IRON AND INCIDENTAL IMPURITIES, IN WHICH SAID ELEMENTS ARE BALANCED TO PROVIDE AN AUSTENITE RETENTION INDEX ("ARI") VALUE OF FROM ABOUT18 TO 22.8, AS CALCULATED FROM THE EQUATION: ARI +% NI + 0.8(%CR) + 0.6(%MO) + 0.3(%CO), (FIG. 1)