Patent ID: 7182751
Filing Date: 2007-02-27
Classification: A61M,Y10S

Abstract:
1. A liquid injection system comprising: a liquid syringe having a hollow cylinder with a cylinder flange disposed on the outer circumferential edge of an end thereof and a piston; a cylinder adapter for receiving the cylinder of said liquid syringe which is placed into the cylinder adapter from the direction substantially perpendicular to a longitudinal axial direction of said cylinder adapter; and a liquid injector for separately holding the cylinder of the liquid syringe with said cylinder adapter and the piston thereof, said liquid injector having a syringe actuating mechanism for moving said cylinder and said piston relatively to each other in longitudinal axial directions thereof; said cylinder adapter comprising: an adapter body having a recess for receiving said cylinder which is placed into the adapter body from the direction substantially perpendicular to a longitudinal axial direction of said adapter body; a pair of laterally spaced movable holders having grooves defined in inner edges thereof for receiving said cylinder flange of said liquid syringe; and holder pivot support mechanisms by which said movable holders are pivotally supported for movement between an open position in which said movable holders are open upwardly for allowing said cylinder flange to be inserted into said grooves, and a closed position in which said cylinder flange is retained in said grooves; wherein the liquid syringe has different size and can not be directly mounted on the liquid injector, and can be mounted on the liquid injector by means of the cylinder adapter; and wherein, in the closed position, the upper end of one movable holder is in contact with the upper end of another movable holder and the cylinder flange is fixed with the movable holders, or the movable holders and a stationary holder, all around its circumference.