PROBLEM TO BE SOLVED: To provide a feed screw-type drug injector that comprises a handle excellent in operability.SOLUTION: A handle 14 of a drug injector 10 includes: a handle body 39 a plurality of first ribs 40 that are elongated in an axial direction on at least a tip end-side outer peripheral surface of the handle body 39 and arranged at intervals in a circumferential direction and a plurality of second ribs 41 that are elongated in the axial direction on only a base end-side outer peripheral surface of the handle body 39 and arranged at circumferential intervals shorter than the circumferential intervals of the plurality of the first ribs 40.COPYRIGHT: (C)2015,JPO&INPIT【課題】操作性に優れるハンドルを備えた送りネジ式の薬剤注入具を提供する。【解決手段】薬剤注入具10のハンドル14は、ハンドル本体39と、ハンドル本体39の少なくとも先端側外周面において軸方向に延在し且つ周方向に間隔をおいて配置された複数の第1リブ40と、ハンドル本体39の基端側外周面のみにおいて軸方向に延在し且つ複数の第1リブ40の周方向間隔よりも小さい周方向間隔で配置された複数の第2リブ41とを有する。【選択図】図1
