Patent ID: 11957870
Assignee: BECTON, DICKINSON AND COMPANY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A medicament delivery device, comprising:
a body having a window therein;
a reservoir disposed in the body for accommodating a medicament;
a plunger movable within the reservoir to expel medicament therefrom, the plunger having a stopper disposed at an end thereof, and an indicator window;
a spring configured to displace the plunger toward an end of the reservoir; and
an indicator sleeve disposed at an end of the stopper, wherein a first portion of the indicator sleeve initially extends through the stopper toward an end of the reservoir;
wherein during expelling of the medicament from the reservoir, the first portion of the indicator sleeve is configured to contact one of the end of the reservoir or a secondary stopper disposed at the end of the reservoir prior to the stopper contacting the one of the end of the reservoir or the secondary stopper, and during movement of the plunger by the spring subsequent to the first portion of the indicator sleeve contacting the one of the end of the reservoir or the secondary stopper, the plunger is configured to bring the indicator window into alignment with a second portion of the indicator sleeve, thereby indicating the end of dosage.