摘要:
The present invention relates to an assembly forming a piston rod for advancing a cartridge bung in a drug delivery device, the assembly comprising a first member and a second member wherein in a first state, the first and the second member are moveable with respect to each other to adjust the length of the piston rod and wherein in a second state the first member is locked in position with respect to the second member in order to define a fixed length of the piston rod. Furthermore, it relates to a drug delivery device comprising the assembly and to a method for assembling such a drug delivery device.
摘要:
A resettable drive mechanism for a drug delivery device (1) comprises a piston rod assembly (32) and an interaction member (23). The piston rod assembly (32) comprises a guide track (18) running along the piston rod assembly (32), the guide track (18) comprising at least one delivery section (18A) and at least one reset section (18B). The reset section (18B) is arranged to continue the delivery section (18A). The delivery section (18A) comprises at least one blocking means (19). The interaction member (23) is configured to cooperate with the guide track (18). For delivering a dose of a drug (24), the piston rod assembly (32) is axially displaceable in a dose delivery direction away from an axial starting position, the interaction member (23) cooperating with the delivery section (18A) and the blocking means (19) passing the interaction member (23) when the piston rod assembly (32) is displaced in the dose delivery direction. Axial displacement of the piston rod assembly (32) towards the axial starting position is prevented by mechanical interaction of the blocking means (19) and the interaction member (23) when the interaction member (23) cooperates with the delivery section (18A). For resetting the drug delivery device (1), the interaction member (23) is configured to cooperate with the reset section (18B), the piston rod assembly (32) being axially displaced towards the axial starting position, the blocking means (19) being offset from the interaction member (23) and passing the axial position of the interaction member (23) when the piston rod assembly (32) is axially displaced towards the axial starting position. Also, a piston rod assembly (32) is proposed.
摘要:
A first output member is rotatable around an axis relatively to the body. A second output member is movable relatively to the body along the axis. The first output member and the second output member are rotationally coupled. A drive feature is provided to generate a rotation of the first output member. A part which is removable from and attachable to the body is provided so that the first output member is unidirectionally rotationally coupled with the drive feature when the part is attached to the body.
摘要:
The instant application is directed to an assembly for a drug delivery device which is arranged to operate in two distinct modes, a priming mode starting from a pre-priming state and a dispense mode operating in a post-priming state, and a drug delivery device comprising this assembly. The assembly comprises a dose member, an actuating member and a piston rod which is configured to act on a bung of an assembled cartridge containing the drug. In the pre-priming state the actuating member is configured to be moved by a user such that the movement of the actuating member causes a movement of the dose member and such that the movement of the dose member causes a movement of the piston rod. In the post-priming state the dose member is configured to be moved by a user without causing a movement of the actuating member in order to perform a set and dispense action of the drug delivery device.
摘要:
A method for securing a cartridge (4) in a cartridge holder (3) is provided, the method comprising the steps of inserting the cartridge (4) into the cartridge holder (3), the cartridge holder (3) having a proximal end and a distal end, axially displacing the cartridge (4) in a proximal direction with respect to the cartridge holder (3) from a distal initial position to a proximal end position and securing the cartridge (4) in the end position against displacement in the distal direction with respect to the cartridge holder (3). An assembly for a drug delivery device (1) is provided comprising a cartridge (4), an adjusting member (12, 25, 28, 34) and a cartridge holder (3). The cartridge holder (3) has a distal end and a proximal end. The adjusting member (12, 25, 28, 34) is secured to the cartridge holder (3). The adjusting member (12, 25, 28, 34) holds a distal portion of the cartridge (4) at a distance with respect to a distal portion of the cartridge holder (3).
摘要:
A method for securing a cartridge to a body for a drug delivery device is provided comprising the step of securing the cartridge to the body by means of a releasable connection to prevent accidental relative movement between the cartridge (4) and the body during assembly of the device. Afterwards, the releasable connection is modified irreversably into a non-releasable connection such that the cartridge is permanently secured to the body. Furthermore, an assembly for a drug delivery device is provided comprising a cartridge, a body, a first connection means and a second connection means. The first connection means and the second connection means are configured to mechanically cooperate to form a releasable connection. The releasable connection is suitable for releasably securing the cartridge to the body. The releasable connection prevents accidental relative movement between the cartridge and the body during assembly of the device. The first connection means and the second connection means are irreversably non-releasably secured to each other.
摘要:
A drive mechanism for a drug delivery device (1) comprises a housing (2), a drive member (5) and a piston rod assembly (32). The drive member (5) is configured to be axially displaced in a dose setting direction with respect to the housing (2) for setting a dose of a drug (24) and to be axially displaced in a dose delivery direction with respect to the housing (2) for delivering the set dose of the drug (24). The drive member (5) comprises a drive feature (15).The piston rod assembly (32) comprises a set of interaction surfaces (17) for mechanical interaction with the drive feature (15), with at least two interaction surfaces (17) being axially and angularly offset with respect to each other. When the drive member (5) is displaced in the dose delivery direction for delivering the set dose, the drive feature (15) mechanically interacts with one of the interaction surfaces (17) and the piston rod assembly (32) rotates with respect to the housing (2), thereby rotating and axially displacing another one of the interaction surfaces (17) from a non-interaction position into an interaction position in which the drive feature (15) may interact with the other one of the interaction surfaces (17) when the drive mechanism is actuated once more for setting and delivering a further dose. Also, a piston rod (3) is proposed.
摘要:
A drug delivery device comprising: a device body, an operating member which is configured to be movable relative to the device body for operating the drug delivery device, a preventing member which prevents movement of the operating member relative to the device body for operating the drug delivery device, wherein the preventing member is removable to allow movement of the operating member relative to the device body for operating the drug delivery device.
摘要:
A drug delivery device is provided comprising a dose setting mechanism having a spindle and a cartridge holder coupled to the dose setting mechanism. The cartridge holder comprising a cartridge having a movable bung at one end of the cartridge. The cartridge holder must be rotated before a dose may set with the dose setting mechanism.
摘要:
A drug delivery device is provided comprising a dose setting mechanism having a spindle and a cartridge holder coupled to the dose setting mechanism. The cartridge holder comprising a cartridge having a movable bung at one end of the cartridge. The cartridge holder must be rotated before a dose may set with the dose setting mechanism.