| 摘要 |
<p>In an injection device a rotary indicator element (20) indexes angularly between a pre firing position to an injection complete position to create a visual and audible/tactile signal as the drive plunger (28) arrives at or near its fired position. The indicator element (20) has a saw tooth profile which co operates with respective abutments (34 40) on the plunger and a housing part of the device to control and energise indicator movement.</p> |
