Abstract: The present invention relates to a drive mechanism for a drug delivery device for dispensing of a dose of a medicinal product, comprising: a holder for a product-containing cartridge, the cartridge having a piston slidably arranged therein in an axial direction, a piston rod to be operably engaged with the cartridge's piston for dispensing of a dose of the medicinal product, an adjusting assembly adapted to eliminate axial clearance between the piston and the piston rod, wherein the adjusting assembly comprises at least one radially extending spike element for mutually locking in position the piston and the piston rod irrespective of the relative distance between piston and piston rod.

Abstract: The present invention relates to a drug delivery device for dispensing of a predefined dose of a medicinal product, comprising: a housing, a cartridge holder adapted to receive a cartridge containing the medicinal product to be dispensed, the cartridge holder being connectable to the housing, a drive mechanism to be operably engaged with the cartridge for setting and/or dispensing of a predefined dose of the medicinal product, wherein the drive mechanism is axially slidingly supported in the housing for compensating axial clearance between the drive mechanism and the cartridge and wherein the drive mechanism is axially fixable relative to the housing.

Abstract: A drug delivery device for dispensing of a dose of a medicinal product is presented comprising a first housing component having a receptacle being oval- or elliptically shaped in radial cross section and being adapted to at least partially receive an insert portion of a second housing component being at least partially insertable into said first housing component along an axial direction, wherein the insert portion is oval- or elliptically shaped in radial cross section. The outside dimension or an at least one outside diameter of the insert portion is at least in sections larger than a corresponding inner dimension or an at least one inner diameter of the receptacle and wherein the insert portion and the receptacle are adapted to generate a radially acting mutual clamping of first and second housing components in a pre-fixing assembly configuration.

Abstract: The present invention relates to a drive mechanism for a drug delivery device for dispensing of a dose of a medicinal product, comprising: a holder for a product-containing cartridge, the cartridge having a piston slidably arranged therein in an axial direction, a piston rod to be operably engaged with the cartridge's piston for dispensing of a dose of the medicinal product, an adjusting assembly adapted to eliminate axial clearance between the piston and the piston rod, wherein the adjusting assembly comprises at least one radially extending spike element for mutually locking in position the piston and the piston rod irrespective of the relative distance between piston and piston rod.

Abstract: The present invention relates to a drug delivery device for dispensing of a predefined dose of a medicinal product, comprising: a housing, a cartridge holder adapted to receive a cartridge containing the medicinal product to be dispensed, the cartridge holder being connectable to the housing, a drive mechanism to be operably engaged with the cartridge for setting and/or dispensing of a predefined dose of the medicinal product, wherein the drive mechanism is axially slidingly supported in the housing for compensating axial clearance between the drive mechanism and the cartridge and wherein the drive mechanism is axially fixable relative to the housing.

Abstract: The present invention relates to a drive mechanism for a drug delivery device as well as to a drug delivery device for dispensing of a dose of a medicinal product, wherein the drive mechanism comprises: a holder for a product-containing cartridge, the cartridge having a piston slidably arranged therein in an axial direction, a piston rod to be operably engaged with the cartridge's piston for dispensing of a dose of the medicinal product, at least one adjusting member slidably arranged in axial direction relative to the piston and/or relative to the piston rod for eliminating axial clearance between the piston and the piston rod, an interlock means adapted to interact with the adjusting member for mutually locking in position the piston and the piston rod irrespective of the relative distance between piston and piston rod.