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:
An assembly of a drug delivery device comprises a body (10) having a distal end (11) and a proximal end (12), a drive assembly (4) arranged substantially within the body (10) to facilitate dispense of a medicinal product and a button member (5) arranged at the proximal end (12) of the body (10) and adapted to act upon the drive assembly (4). The drive assembly (4) has an initial pre-ready state, a transient state and a ready state; in the pre-ready and transient states the button member (5) is twistable with respect to the body (10) to act upon the drive assembly (4) and wherein in the ready state the button member (5) is axially moveable but not substantially twistable with respect to the body (10) to act upon the drive assembly (4) to dispense a dose of the medicinal product.
摘要:
A drug delivery device (10) is given, comprising a body (12) and a moveable button member (14), wherein in a pre-ready state of the drug delivery device (10) there is a misalignment between the body (12) and the button member (14). This misalignment is perceivable by a user of the drug delivery device (10). In a ready state of the drug delivery device (10), the button member (14) and the body (12) are aligned and the alignment is perceivable by a user of the drug delivery device (10).
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 plunger and a lever are arranged in a body and provided with engaging elements engaging the lever with the plunger. The lever is disengageable from the plunger by a shift of the lever, thus enabling a movement of the plunger relatively to the body in the proximal direction.
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 present invention relates to injectors, such as pen-type injectors, that provide for administration of medicinal products from a multidose cartridge and permit a user to set the delivery dose. The injector may include a housing, a cartridge containing medicinal product, the cartridge being retained within the housing, means for selecting a dose of medicinal product to be expelled, and means for expelling the selected dose of medicinal product. The housing may be a unitary housing within which the means for selecting a dose and the means for expelling the selected dose are moveably retained. Alternatively, the injector may include a housing, a piston rod, an insert located in the housing and through which the piston may rotate, ratchet means, a dose dial sleeve, a drive sleeve, a button located on the drive sleeve and rotatable with respect to the drive sleeve, and clutch means which upon depression of the button prevents rotation between the dose dial sleeve and the drive sleeve.
摘要:
An actuator is provided which is adapted, in conjunction with a cartridge, to form a needle-less injector, the cartridge being filled with a liquid to be injected in a subject, and having a liquid outlet and a free piston in contact with the liquid. The actuator comprises an impact member urged by a spring and temporarily restrained by a latch, the impact member being movable in a first direction under the force of the spring to first strike the free piston and then to continue to move the piston in the first direction to expel a dose of liquid through the liquid outlet, the spring providing a built-in energy store. A pressure pad surrounds the said liquid outlet and, in use, bears on the subject's skin. The actuator may be formed of two main housing components urged apart by an integral cantilever spring formed on one of them, a safety catch can be provided to prevent inadvertent actuation.
摘要:
According to one aspect, a resettable drive assembly for a drug delivery device is provided for. The resettable drive assembly may comprise a housing having a proximal end and a distal end, a piston rod being rotatable with respect to the housing and being axially displaceable with respect to the housing between a proximal start position and a distal end position, a drive member for distally displacing the piston rod towards the end position when dispensing a dose, and a stop member. The drive assembly may be configured such that the drive member is operable to interact with the piston rod for forming an unlockable first interlock, the first interlock being operable to block proximal movement of the piston rod with respect to the drive member. The drive assembly may be configured such that the stop member is operable to interact with the piston rod for forming an unlockable second interlock, the second interlock being operable to block proximal movement of the piston rod with respect to the housing. The drive assembly may be configured such that, when the drive assembly is in a drive mode, the first and second interlocks are locked such that proximal movement of the piston rod from the end position to the start position is prevented by the first interlock and the second interlock. The drive assembly may be configured such that, for switching the drive assembly from the drive mode to a reset mode, the piston rod is rotatable with respect to the drive member for unlocking the first interlock and the stop member and the piston rod are rotatable with respect to each other for unlocking the second interlock. The drive assembly may be configured such that, when the drive assembly is in the reset mode, the first interlock and the second interlock are unlocked such that proximal movement of the piston rod to the start position is allowed. Further, a drug delivery device and a use of a spring are provided for.
摘要:
An assembly of a drug delivery device with a longitudinal axis (L) is given, comprising a body (1) with a proximal end (2) and a distal end (3). The drug delivery device further comprises a drive assembly and a first button member (4). The drive assembly is at least partially arranged within the body (1) and is adapted to facilitate dispense of a medicinal product. The first button member (4) acts on the drive assembly to prepare the drug delivery device for dispensing the medicinal product. The first button member (4) is adapted to be detachable from the body (1) after the preparation of the drug delivery device is completed.