Method for manufacturing an eyeless suture needle

A method for manufacturing an eyeless needle by which a satisfactory hole can be formed in the end surface of a fine suture needle having a needle diameter less than 150 micrometers is proposed. In a method for manufacturing an eyeless needle by forming a hole for inserting and fixing one end of a s...

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Bibliographische Detailangaben
Hauptverfasser:	FUKUDA, SHOICHI, MASHIKO, MASAKI, AKATSUKA, MASAO, YOKOYAMA, YUJI, MATSUTANI, KANJI, AKABA, MIEKO, YAGISAWA, HIROSHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MACHINE TOOLS MAKING NEEDLES, PINS OR NAILS OF METAL MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL MEDICAL OR VETERINARY SCIENCE METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PUNCHING METAL SOLDERING OR UNSOLDERING SURGERY TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method for manufacturing an eyeless needle by which a satisfactory hole can be formed in the end surface of a fine suture needle having a needle diameter less than 150 micrometers is proposed. In a method for manufacturing an eyeless needle by forming a hole for inserting and fixing one end of a suture thread by caulking in the end surface of the eyeless suture needle made of stainless steel, the hole is formed by irradiating the end surface of a needle material thicker by 6 to 20 micrometers than a desired needle diameter of the suture needle less than 150 micrometers with one shot of a laser beam, and subsequently, a portion thicker than the desired needle diameter is removed by electrolytic polishing or chemical polishing.