| 摘要 |
The syringe is of the type comprising an injection needle, a carpule containing the liquid to be injected and a plunger controlling the movement of the bottom of the carpule. Movement of the plunger 12 towards the carpule is controlled by a lever 3 comprising a pawl 19 interacting with a rack 15 put onto the plunger, ensuring gearing down of the manual pressure exerted by the user on the said lever. Application: dental equipment. <IMAGE> |
