CPC A61M 5/31551 (2013.01) [A61M 5/3157 (2013.01); A61M 5/3234 (2013.01); A61M 2205/581 (2013.01)] | 38 Claims |
1. A plunger rod assembly for a syringe comprising:
a main body;
a plunger rod at least partially received in the main body and comprising a set of one or more protrusions; and
a dosage setter operatively coupled to the plunger rod and comprising a rotatable body that comprises a set of one or more stops for engaging the set of one or more protrusions of the plunger rod depending on at least a rotational position of the set of one or more stops relative to the set of one or more protrusions, wherein a first rotational adjustment associated with the dosage setter is configured to set a first dosage increment by adjusting a relative axial position between the rotatable body and the plunger rod, and a second rotational adjustment associated with the dosage setting assembly is configured to set a second dosage increment that is larger than the first dosage increment by adjusting a relative rotational alignment between the set of one or more stops and the set of one or more protrusions.
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