| 摘要 |
<p>An injector head (1000), comprising a plunger (20) moving reciprocatingly in the moving direction of a piston (1a) inside a cylinder (1), a plunger driving device (500) for converting the rotating motion of a plunger motor (2) to the linear motion thereof to provide a reciprocating motion to the plunger (20), and a safety device (600) as safety means for braking the rotation of a rotating shaft (2a) of the plunger motor (2) by a mechanical motion when the plunger (20) moves beyond a predetermined position, whereby a medical injector head reduced in size and facilitated in structure can be provided while maintaining a mechanical safety mechanism.</p> |
