| 摘要 |
<p>A device for controlling movement more expecially a syringe comprising cylinder (10) and piston (11) therein spring (18) urged in one direction, a rod-like fusible element (25) of low-melting point material holding the piston (11) against the urge of the spring, and a heater (30) to melt the fusible element, so as to allow movement of the piston to the extent that the heater (30) melts said element, movement of the piston drawing liquid into, or expelling it from, the cylinder (10). </p> |
