| 摘要 |
The present invention provides a device for administering an injectable product in doses, wherein the device has a casing with a reservoir for the product, a piston which forces product out of the reservoir when moved in a feed direction towards an outlet of the reservoir, a driven rod which moves the piston in the feed direction, a drive member which may be moved in and counter to the feed direction and which slaves the driven rod when moved in the feed direction, and at least one blocking means for creating friction between said blocking means and one of the driven rod and the casing. |
