Back to results
US 2017/0319788 A1Published application
Space saving drug injection device
AssigneeSanofi
InventorsAnthony Paul Morris, Matthew Meredith Jones, Oliver Benjamin Brown
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSanofi
InventorsAnthony Paul Morris, Matthew Meredith Jones, Oliver Benjamin Brown
Estimating the term…
The present disclosure relates to an injection device for setting and dispensing of a dose of a medicament, the device including an elongated housing to accommodate a cartridge filled with the medicament and sealed with a piston, a piston rod extending along a first axis and being threadedly or slidingly engaged with the housing to apply a distally directed thrust to the piston of the cartridge, a drive member rotationally or threadedly engaged with the piston rod and having a wheel section or geared section, and a drive sleeve extending along a second axis at a radial distance from the first axis and having a geared section to mesh with the wheel section or geared section of the drive member, wherein a first radial distance between first and second axes at a distal end of the drive sleeve differs from a second radial distance between first and second axes at a proximal end of the drive sleeve.
An injection device for setting and dispensing of a dose of a medicament, the device comprising:
The injection device according to any one of the preceding claims, wherein the difference between first and second radial distances (d1, d2) is larger than 0 mm and less than 3 mm, less than 2 mm or less than 1 mm.
The injection device according to any one of the preceding claims, further comprising a substantially tubular cartridge (6) assembled inside the housing (10) and extending along a third axis (3′) at a radial distance from the second axis (4) and parallel to the second axis (4).
The injection device according to any one of the preceding claims, wherein the wheel section or geared section (103) of the drive sleeve (100) is located near or at the proximal end (P) of the drive sleeve (100).
The injection device according to any one of the preceding claims, further comprising a dispensing member (30) aligned along the second axis (4) with a shaft portion (31) extending through the drive sleeve (100) and being displaceable in distal direction (1) against the action of a spring member (70) to switch from a dose setting mode (S) into a dose dispensing mode (D).
The injection device according to any one of the preceding claims, further comprising a ratchet member (60) aligned along the second axis (4) and having a ratchet profile (65) at a proximal end to selectively engage with a correspondingly shaped ratchet profile (105) at the distal end (100a) of the drive sleeve (100).
Dependencies are inferred from the claim text.