| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-speed driving device for medical use that can stably maintain a preset injecting speed without being affected by the kind and temperature of a liquid medicine to be injected at the time of injecting the liquid medicine. SOLUTION: This low-speed driving device has a cylinder 2 enclosing a viscous fluid 1 in a liquid-tight state; a first gasket which is in contact with the internal wall of the cylinder 2 in a liquid-tight state, can slide freely in the longitudinal direction of the cylinder 2, and has small-diameter flow passages 31 made through the gasket 3 in the longitudinal direction of the cylinder 2; and a plunger 4 firmly fixed to the gasket 3. This driving device also has a driving means 5 which moves the cylinder 2 with respect to the plunger 4. |
