Patent ID: 9192514
Filing Date: 2015-11-24
Classification: A61F,A61M

Abstract:
1. A medical instrument comprising: a handpiece comprising an opening at a front end of the handpiece, a grip portion that forms an outer cylinder of the handpiece, and a fixing portion at a rear end of the handpiece, the opening, the outer cylinder, and the fixing portion being coaxial with each other; a syringe in the handpiece held by the fixing portion of the handpiece, the syringe comprising a front end portion that is inserted in the opening of the handpiece, a tank portion configured to house a fluid, and a plunger that changes a volume or pressure of an inside of the tank portion to at least one of suction the fluid into the tank portion and discharge the fluid from the tank portion; and the longitudinal axis of the guide portion is different from a longitudinal axis of the plunger, wherein the outer cylinder comprises a groove extending parallel to an axis of the outer cylinder, the groove being formed on an outer surface of the outer cylinder and between the opening and fixing portion of the handpiece, and the operation member is a rotary disc disposed in the groove of the outer cylinder.