Patent ID: 7977603

Claim:
A method for manufacturing an eyeless suture needle by forming a hole for inserting and fixing one end of a suture thread by caulking in a proximal end surface of the eyeless suture needle made of stainless steel, comprising the steps of: irradiating the end surface of a needle material, which surface has irregularities formed therein during manufacture, the needle material having a diameter that is 6 to 20 micrometers greater than a desired needle diameter of the suture needle of less than 150 micrometers, with one shot of a laser beam having a total pulse width equal to or less than 35 microseconds that is extracted from one shot of a laser beam emitted from a laser oscillator with an electronic shutter to form a hole therein; and subsequently, removing a portion of the needle material that is thicker than the desired needle diameter.