| 摘要 |
<p>PURPOSE:To prevent the intrusion of a cutting cylinder into skin over necessity in use by forming at least one mark having a certain distance for a cutting edge, on the outer peripheral surface of the cutting cylinder. CONSTITUTION:A cutting cylinder 3 made of metal is press-fitting-fixed onto a holder 1 consisting of a plastic rod member, and a cutting edge 3a is formed on the whole of the top edge of the cutting cylinder. A stopper surface 1a which forms a staircase form for the cutting cylinder 3 is formed on the top edge surface of the holder 1, and the stopper surface 1a is set parallel to the cutting edge. Three cylindrical marks 4a, 4b, and 4c are cut at equal intervals from the cutting edge on the outer peripheral surface of the cutting cylinder fixed on the holder, and each mark is formed parallel for the cutting edge. With this constitution, the insertion length of the cutting cylinder under skin can be judged from the mark on the cutting cylinder, and the excessive intrusion of the cutting cylinder under skin is prevented.</p> |
