Patent ID: 9339607
Filing Date: 2016-05-17
CPC Classification: A61M

Claim Text:
1. A medicament delivery device comprising: a housing for holding a medicament cartridge, the medicament cartridge having a medicament outlet and a bung moveable axially along the medicament cartridge for dispensing a medicament; a piston rod having a plunger for moving the bung, and a lead member telescopically coupled to the plunger; a battery powered drive for telescopically extending or retracting the piston rod; and a linkage coupled between the plunger and an anchorage wherein the medicament delivery device includes a drive member telescopically coupled to the lead member, wherein the battery powered drive is operative to rotate the drive member to telescopically move the lead member relative to the drive member whereby the plunger is moved relative to the lead member by way of the linkage wherein the linkage is an elongate element acting between the housing and the plunger via a pulley, and wherein the pulley is a wheel located on the lead member.