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AssigneeSanofi
InventorsMatthew Jones, Anthony Paul Morris, Aled Meredydd James, Paul Roger Griffin
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The present invention relates to a A display arrangement for an injection device for displaying the size of a dose of a medicament, the display arrangement comprising: —a housing (60) providing a rotation axis (3) extending in an axial direction (4), —a first display member (22) rotatably supported inside the housing (60) with regard to the rotation axis (3) and having at least one cam (32) radially offset from the rotation axis (3), —a second display member (24) rotatably supported inside the housing (60) with regard to the rotation axis (3) and arranged axially adjacent to the first display member (24), —a coupling member (26) rotatably engaged with the second display member (24), wherein the coupling member (26) is engaged with the at least one cam (32) of the first display member (22) when the first display member (22) is in a predefined angular position or angular range, —wherein the coupling member (26) and the first display member (22) are mutually engaged via a retaining arrangement (48) when the cam (32) and the coupling member (26) are disengaged.
A display arrangement for an injection device for displaying the size of a dose of a medicament, the display arrangement comprising:
The display arrangement according to any one of the preceding claims, wherein the coupling member (26) is rotatably supported in the housing (60) with regard to a coupling axis (7) extending parallel but radially offset to the rotation axis (3) and wherein the coupling member (26) comprises a first geared section (42) with numerous first teeth (43) to mesh with the cam (32) when the first display member (22) is in the predefined angular position or angular range.
The display arrangement according to any one of the preceding claims, wherein at least one of first display member (22) and second display member (24) comprises a sleeve like shape and further comprising a display surface (28) on its outer circumference provided with consecutive dose size indicating symbols (29).
The display arrangement according to any one of the preceding claims, wherein the coupling member (26) comprises a second geared section (44) with numerous second teeth (45) meshing with a geared section (25) of the second display member (24).
The display arrangement according to any one of the preceding claims, wherein the retaining arrangement (48) comprises at least two retaining teeth (47) separated in circumferential direction on the outer circumference of the coupling member (26), which retaining teeth (47) are in radial abutment with a retaining ring (30) of the first display member (22) when the first display member (22) is outside the predefined angular position or angular range.
A drive mechanism for an injection device for dispensing of a dose of a medicament, the drive mechanism comprising:
The drive mechanism according to claim 14, further comprising an arc-shaped clicking member (190) to audibly engage with a toothed structure (82) of the housing (60) or of an insert (80) attached to the housing, wherein the clicking member (190) is elastically and radially deformable by engagement with an axially displaceable last dose limiting member (150).
Dependencies are inferred from the claim text.