Method of selectively annealing a needle

An improved method of selectively annealing a needle and the needle prepared by the improved method is disclosed. A curved needle is positioned adjacent a flat electromagnetic induction coil. The curved body of the needle is positioned in a plane parallel with the coil plane of the flat induction co...

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Bibliographische Detailangaben
Hauptverfasser:	COLLIER JOHN, STUNGURYS LEON K
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS DIAGNOSIS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HUMAN NECESSITIES HYGIENE IDENTIFICATION MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING NEEDLES, PINS OR NAILS OF METAL MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL MEDICAL OR VETERINARY SCIENCE METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL SURGERY TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Beschreibung
Zusammenfassung:	An improved method of selectively annealing a needle and the needle prepared by the improved method is disclosed. A curved needle is positioned adjacent a flat electromagnetic induction coil. The curved body of the needle is positioned in a plane parallel with the coil plane of the flat induction coil. A current is delivered through the coil to selectively heat and consequently selectively anneal a portion of the needle. The improved method enables the selective annealing of curved needles, and is especially useful for the manufacture of surgical needles.