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AssigneeMani, Inc.
InventorsKanji Matsutani, Masaki Mashiko, Yuji Yokoyama, Mieko Akaba, Hiroshi Yagisawa, Masao Akatsuka, Shoichi Fukuda
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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.
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, characterized in that
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, characterized in that the hole is formed by irradiating the end surface of a needle material having a desired needle diameter less than 150 micrometers with one shot of a laser beam having the total pulse width equal to or less than 35 microseconds.
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, characterized in that
Dependencies are inferred from the claim text.