< Topic >At the same time the little liquid medicine the former injector compared to in high order accuracy the injector which can emit without wastefulness is offered.SolutionsThe barrel itself which possesses even inside diameter in axial direction (5), and the barrel itself the needle terminal area where (5) is connected in one end the barrel which it possesses (6) (2) and in the piston (7), and the piston (7) which the barrel (2) fits to the inside it is connected and the needle terminal area (6) the inside is formed by tapered condition the piston the barrel (2) the plunger which possesses the rod in order it makes go to make axial direction move in inside in the injector which it has (3), The piston (7), concatenating the aforementioned rod to the rear, the barrel itself it is connected in the front of the disk section and the disk section which (5) fits to the inside the needle terminal area (6) the inside and it features that it possesses the shot section of the external condition which compliment is done.【課題】少量の薬液を従来の注射器よりも高精度に且つ無駄なく吐出することのできる注射器を提供する。【解決手段】軸方向に一様な内径を有するバレル本体(5)、及びバレル本体(5)の一端に連なる針接続部(6)を有するバレル(2)と、バレル(2)の内面に嵌合するピストン(7)、及びピストン(7)に連なりピストンをバレル(2)内で軸方向に往復移動させるためのロッドを有するプランジャ(3)とを備えた注射器において、針接続部(6)の内面がテーパー状に形成され、ピストン(7)が、後方に前記ロッドを連結してバレル本体(5)の内面に嵌合するディスク部と、ディスク部の前方に連なり針接続部(6)の内面と相補する外形状のショット部とを有することを特徴とする。
