Abstract: A drug delivery device may include a housing having an opening and a drug storage container including a delivery member with an insertion end configured to extend at least partially through the opening. A biasing member may initially be retained in an energized state, and may be released to drive a plunger to expel a drug from the drug storage container. The plunger may be configured to selectively rotate from an initial rotational position to a second rotational position under a biasing force exerted by the biasing member, and translate linearly in a distal direction to drive the stopper through the drug storage container after rotating from the initial rotational position to the second rotational position. A releaser member may have an initial position wherein the releaser member retains the biasing member in the energized state, and a second position wherein the releaser member generates an audible end-of-dose signal.

Abstract: A drug delivery device and method of using the same may include a housing having an opening and a drug storage container including a delivery member with an insertion end configured to extend at least partially through the opening. The drug storage container may be coupled with the housing such as to substantially prevent relative movement therebetween. A guard may be positioned adjacent to the opening and operably coupled with the plunger biasing member such that a relative movement between the guard and the housing permits release of a plunger biasing member to urge a plunger in to expel a drug from the drug storage container. A lock component may be configured to resist the relative movement between the guard and the housing until the lock component is released by a user force, whereafter the user force drives the housing and the drug storage container toward an injection site.

Abstract: A drug delivery device may include a housing defining a longitudinal axis and having an opening and a drug storage container including a delivery member having an insertion end configured to extend at least partially through the opening during a delivery state. The device may also include plunger moveable toward the distal end of the drug storage container to expel a drug from the drug storage container through the delivery member, the plunger including a body portion having an inner wall defining an axial chamber and an outer wall cooperating with the inner wall to define a body thickness. The device may further include a plunger biasing member disposed at least partially within the axial chamber, the plunger biasing member configured to urge the plunger toward the distal end of the drug storage container.

Abstract: A drug delivery device may include a housing having an opening and a drug storage container including a delivery member having an insertion end configured to extend at least partially through the opening during a delivery state. The device may also include a guard moveably positioned adjacent to the opening and a plunger having a generally cylindrical body portion extending along a longitudinal axis of the container and at least one flange extending radially outwardly from the body portion, wherein the plunger is moveable toward the distal end of the container to expel a drug through the delivery member. The device may further include a plunger biasing member configured to urge the plunger toward the distal end of the container and a releaser member defining a guide configured to receive the at least one flange and an indicator configured to generate an audible signal indicating an end of drug delivery.

Abstract: The invention relates to a medical injection device for injection of a liquid drug. The injection device comprises a housing structure with a cartridge and needle cannula. Further an axially movable cleaning reservoir is provided which is movable in relation to the housing structure, and which cleaning reservoir contains a liquid cleaning agent. The distal tip of the needle cannula is positioned and thus cleaned inside the cleaning reservoir between subsequent injections. According to the invention, the cleaning reservoir connects to an overflow reservoir through a one-way pressure valve such that the cleaning agent and/or air is flowable from the cleaning reservoir and into the overflow reservoir.

Abstract: The invention relates to a prefilled injection pen for apportioning multiple set doses of a liquid drug. The injection pen comprises a housing assembly with a removable cap rotatable coupled to the housing assembly such that the user has to rotate the removable cap upon mounting and dismounting the removable cap. Rotation of the removable cap initiates a process in which the proximal end of a needle cannula is first inserted into a cartridge permanently embedded in the housing assembly and thereafter moves the cartridge proximally to thereby pump a predetermined amount of the preservative containing liquid drug from the cartridge and into a cleaning chamber carried by an axially movable shield. The needle cannula is mounted in a needle hub which is arranged to follow rotation of the removable cap and guided helically in relation to the housing assembly such that the needle hub is moved proximally upon rotation of the removable cap.

Abstract: The invention relates to a pre-filled injection device for apportioning a plurality of set doses of a liquid drug comprising. The housing of the injection device supports a non-replaceable cartridge containing the liquid drug. The cartridge is e.g. secured in a cartridge-holder being a part of the housing. A needle assembly comprising a needle cannula secured in a hub is slidable mounted to slide into contact with the cartridge. The tip of the needle cannula is covered by a telescopically movable shield movable from an extended position to a retracted position. The telescopically movable shield supports a cleaning chamber containing a cleaning solvent for cleaning at least the distal tip of the needle cannula between subsequent injections. The distal end of the housing supports a removable protective cap and the telescopically movable shield is guided relatively to the housing and coupled to the protective cap to follow movement of the protective cap.

Abstract: The invention relates to a pre-filled injection device for apportioning a plurality of set doses of a liquid drug comprising. The housing of the injection device supports a non-replaceable cartridge containing the liquid drug. The cartridge is e.g. secured in a cartridge-holder being a part of the housing. A needle assembly comprising a needle cannula secured in a hub is slidable mounted to slide into contact with the cartridge. The tip of the needle cannula is covered by a telescopically movable shield movable from an extended position to a retracted position. The telescopically movable shield supports a cleaning chamber containing a cleaning solvent for cleaning at least the distal tip of the needle cannula between subsequent injections. The distal end of the housing supports a removable protective cap and the telescopically movable shield is guided relatively to the housing and coupled to the protective cap to follow movement of the protective cap.

Abstract: The invention relates to a prefilled injection pen for apportioning multiple set doses of a liquid drug containing a preservative. The injection pen comprises a housing structure which permanently and non-removable secures a cartridge containing the preservative containing liquid drug. The cartridge is connected to a needle cannula which further has a sharp distal tip for penetrating the skin of a user. The distal tip of the needle cannula is concealed by an axially movable needle shield at least between injections. At the distal end of the axially movable needle shield, a cleaning chamber is provided which cleaning chamber contains a volume of the same preservative containing liquid drug as present in the cartridge. The cleaning chamber is further provided with an outlet which is open to the surroundings and through which outlet air and a quantum of the preservative containing liquid drug can escape.

Abstract: The invention relates to a prefilled injection pen for apportioning multiple set doses of a liquid drug. The injection pen comprises a housing assembly with a removable cap rotatable coupled to the housing assembly such that the user has to rotate the removable cap upon mounting and dismounting the removable cap. Rotation of the removable cap initiates a process in which the proximal end of a needle cannula is first inserted into a cartridge permanently embedded in the housing assembly and thereafter moves the cartridge proximally to thereby pump a predetermined amount of the preservative containing liquid drug from the cartridge and into a cleaning chamber carried by an axially movable shield. The needle cannula is mounted in a needle hub which is arranged to follow rotation of the removable cap and guided helically in relation to the housing assembly such that the needle hub is moved proximally upon rotation of the removable cap.

Abstract: The present invention provides an injection needle unit (10) comprising: a needle assembly (20) comprising: an injection needle (25) extending along a longitudinal axis and having a distal needle end configured for insertion into a subject and a proximal needle end configured for penetration of a reservoir septum, and a skirt (22) surrounding the proximal needle end and defining a receiving space (28) for reception of a needle mount of a drug delivery device, the skirt (22) comprising a slot (24), and a block structure (32) supported exteriorly of the skirt (22), wherein the block structure (32) is biased towards the longitudinal axis and is capable of radial displacement through the slot (24) from a latched position outside the receiving space (28) to a released position within the receiving space (28).

Abstract: The present invention relates to an injection device for injecting a pharmaceutical liquid drug containing a preservative. The injection device comprises a housing (1) supporting a cartridge (20) having an interior chamber (21) holding the pharmaceutical preservative containing liquid drug to be injected, and a needle cannula (10) having a front part (11) and a back part (12), which back part (12) is adapted to be in liquid communication with the interior chamber (21) of the cartridge (20). The injection device is further provided with a telescopic needle covering shield (30) which distally is provided with a reservoir (31) which holds a liquid containing the same preservatives as in the pharmaceutical preservative containing liquid drug contained in the interior chamber of the cartridge. The telescopic needle covering shield (30) is telescopic movable in relation to the needle cannula (10) by a first resilient member between a first position and a second position.

Abstract: The present invention relates to an injection device for injecting a pharmaceutical liquid drug containing a preservative. The injection device comprises a housing (1) supporting a cartridge (20) having an interior chamber (21) holding the pharmaceutical preservative containing liquid drug to be injected, and a needle cannula (10) having a front part (11) and a back part (12), which back part (12) is adapted to be in liquid communication with the interior chamber (21) of the cartridge (20). The injection device is further provided with a telescopic needle covering shield (30) which distally is provided with a reservoir (31) which holds a liquid containing the same preservatives as in the pharmaceutical preservative containing liquid drug contained in the interior chamber of the cartridge. The telescopic needle covering shield (30) is telescopic movable in relation to the needle cannula (10) by a first resilient member between a first position and a second position.

Abstract: The present invention concerns a medical injection device for apportioning set doses of a preservative containing liquid drug. The injection device comprises a housing supporting a cartridge containing the preservative containing liquid drug and a needle cannula for transferring the liquid drug from the cartridge and through the skin of a user. Further, a needle shield which is axially movable in relation to the housing is also present. The axially movable shield carries a cleaning reservoir for cleaning at least the tip of the needle cannula between subsequent injections and the cleaning reservoir is preferably filled with preservative containing liquid drug directly from the cartridge upon initiation of the injection device. In order to eliminate any overpressure being built up inside the cleaning reservoir during the filling process, the cleaning reservoir is provided with an outlet configured to be permanently sealed by a user activated operation.

Abstract: The present invention relates to a needle arrangement for an injection device. The needle arrangement is made up from needle cannula which is mounted such that a distal part having a distal tip extends in a distal direction. Further, a telescopically movable shield carrying a cleaning chamber surrounds at least the tip of the needle cannula between injections such that the tip of the needle cannula is maintained inside the cleaning chamber between subsequent injections. The cleaning chamber is at least distally provided with a pierceable septum through which the needle cannula penetrates during injections. For guiding the needle cannula during injections a telescopically movable tube is provided. During injections the distal end of the telescopically movable tube at least partly penetrates the distal septum.

Abstract: The present invention provides an injection needle unit (10) comprising: a needle assembly (20) comprising: an injection needle (25) extending along a longitudinal axis and having a distal needle end configured for insertion into a subject and a proximal needle end configured for penetration of a reservoir septum, and a skirt (22) surrounding the proximal needle end and defining a receiving space (28) for reception of a needle mount of a drug delivery device, the skirt (22) comprising a slot (24), and a block structure (32) supported exteriorly of the skirt (22), wherein the block structure (32) is biased towards the longitudinal axis and is capable of radial displacement through the slot (24) from a latched position outside the receiving space (28) to a released position within the receiving space (28).

Abstract: The invention relates to a torsion spring driven injection device for apportioning individually set doses of a liquid drug. The injection device has a needle cannula (35) for multiple uses and a cleaning chamber (56) for cleaning the tip of the needle cannula between subsequent injections. The cleaning chamber is filled with preservative containing liquid drug directly from the cartridge (30) in a filling sequence which is executed when the user initiates first use of the injection device. The sequence comprises the step of securing the piston rod guide in an inrotatable position and thereafter moving the cartridge in a proximal direction. Such axial movement of the cartridge without a similar movement of the plunger automatically pumps liquid drug from the cartridge and into the cleaning chamber via the lumen of the needle cannula.

Abstract: The present invention relates to a needle assembly having a build-in valve (30). The needle assembly is built up from a hub (20) carrying a needle cannula (10) and a telescopically movable shield (40) which axially covers the distal tip (13) of the needle cannula (10) between injections. The valve (30) is operated by the shield (40) and is arranged such that it is closed when the distal tip (13) of the needle cannula (10) is covered by the shield (40) and is opened when the telescopically movable shield (40) has been retracted a specific distance (X) proximally to the distal tip (13) of the distal cannula part (11).

Abstract: The invention relates to a pre-filled injection device for apportioning a plurality of set doses of a liquid drug comprising. The housing of the injection device supports a non-replaceable cartridge containing the liquid drug. The cartridge is e.g. secured in a cartridge-holder being a part of the housing. A needle assembly comprising a needle cannula secured in a hub is slidable mounted to slide into contact with the cartridge. The tip of the needle cannula is covered by a telescopically movable shield movable from an extended position to a retracted position. The telescopically movable shield supports a cleaning chamber containing a cleaning solvent for cleaning at least the distal tip of the needle cannula between subsequent injections. The distal end of the housing supports a removable protective cap and the telescopically movable shield is guided relatively to the housing and coupled to the protective cap to follow movement of the protective cap.

Abstract: A drug delivery assembly includes a housing (110), a piston (120) axially displaceable in the housing, and a variable volume reservoir (105) formed by the housing and the piston and containing a fluid first drug. The assembly further includes an exterior fluid inlet (150) arranged in or configured to be arranged in fluid communication with the reservoir, a fluid outlet (145) arranged in or configured to be arranged in fluid communication with the reservoir, biasing means (130) configured for moving the piston forwards, and releasable retaining means (113) configured for retaining the piston in an initial position, whereby the biasing means is allowed to move the piston forwards to expel fluid drug from the reservoir when the retaining means is released.