Patent ID: 11918786
Assignee: SANOFI-AVENTIS DEUTSCHLAND GMBH
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A medicament delivery device comprising:
a housing;
a needle comprising a distal tip through which a dose of medicament is deliverable from the medicament delivery device into an injection site, wherein at least a portion of the needle extends distally out of the housing;
a sleeve assembly coupled to the housing, the sleeve assembly being adjacent to the needle, the sleeve assembly comprising a first portion and a second portion, the sleeve assembly being movable in a proximal direction from a first position to an intermediate position during an injection process, and from the intermediate position to a second position during the injection process,
wherein in the first position, the sleeve assembly extends distally from the housing and beyond the portion of the needle such that the first portion and the second portion of the sleeve assembly are exposed outside of the housing,
wherein in the intermediate position, the sleeve assembly extends distally from the housing such that the first portion is exposed outside of the medicament delivery device, and the second portion is concealed within the medicament delivery device,
wherein the first portion and the second portion of the sleeve assembly are telescopically movable relative to one another, and
wherein in the second position, the portion of the needle extends beyond the sleeve assembly and the first and second portions of the sleeve assembly are concealed within the housing;
one or more indicia on the sleeve assembly, the one or more indicia being configured to provide an indication of progress of the injection process, wherein the one or more indicia comprise a first indicia on the first portion and a second indicia on the second portion, the first indicia being different from the second indicia; and
a first biasing element configured to bias the first portion away from the housing, and
a second biasing element configured to bias the second portion away from the housing,
wherein the first biasing element and the second biasing element are configured such that a force needed to compress the first biasing element is less than a force needed to compress the second biasing element.