摘要:
The present invention provides a method of manufacturing a prefilled drug delivery device comprising the steps of arranging a piston rod member (20, 22, 120, 122) and a piston rod guide (40, 140) in a housing (10, 110) such that the piston rod member extends through a guide structure (13, 113) fixed in the housing and is surrounded by and operatively coupled with the piston rod guide, whereby rotation of the piston rod guide in a first direction relative to the housing causes distal movement of the piston rod member relative to the guide structure, and vice versa, and rotation of the piston rod guide in a second direction relative to the housing causes proximal movement of the piston rod member relative to the guide structure, and vice versa, and the piston rod guide is in a first state being capable of bi-directional rota-tion with respect to the housing, bringing a displaceable wall (62, 162) of a variable volume drug reservoir (60, 160) into abutment with a distal end portion of the piston rod member, moving the variable volume drug reservoir proximally relative to the housing to a completely mounted position, and shifting the piston rod guide irreversibly to a second state in which rotation of the piston rod guide in the second direction relative to the housing is prevented.
摘要:
Drug delivery device with electronically controlled and axially displaceable piston drive member (10) adapted to engage a loaded cartridge piston. The piston drive member is moveable between a proximal loading position in which a cartridge can be received and a distal loaded position in engagement with the piston. A proximity sensor (11,12) provides a varying output indicative of a varying distance between the piston drive member and the piston. A controller (30) coupled to the proximity sensor is configured to control movement of the piston drive member from the loading position to the loaded position and stop movement when the controller based on input from the proximity sensor system determines that the loaded position has just been reached. By this arrangement it is prevented that a drug-filled cartridge is pressurized during the loading and initializing procedure.
摘要:
Drug delivery device adapted to receive a cartridge, comprising a drive tube with an inner thread, a motor assembly comprising a drive shaft and being adapted to be received inside the drive tube, a drive member attached to the drive shaft and with an outer thread in engagement with the drive tube inner thread. The drive tube is arranged axially displaceable but non-rotational relative to the motor assembly, whereby rotation of the drive member results in axial, non-rotational displacement of the drive tube. To provide flexibility the drive shaft is connected to the drive member via a first flexible joint, and the motor assembly proximal portion is connected to a support structure via a second flexible joint.
摘要:
Drug delivery device adapted to receive a drug-filled cartridge comprises a piston drive member for expelling a dose of drug from a loaded cartridge, a motor for driving the piston drive member, a rechargeable electric power source, an electrical connector allowing an external connector of a power source to be connected for recharging the power source, and a controller for controlling operation of the motor. The controller is adapted to detect a condition indicative of an external power source being connected to the electrical connector and subsequently disable the expelling assembly to thereby prevent that drug can be expelled from a loaded cartridge when an external power source has been connected to the electrical connector.
摘要:
A drug delivery system (1) comprising first (35) and second reservoir units (30) with first and second identifiers (32), and a main unit (10) adapted to receive either of the first (35) and second reservoir units (30) in a mounted position. The main unit (10) comprises drug expelling means having dose setting means (11, 1, 14, 15, 19) comprising a rotational dose setting member allowing a user to set a desired dose size for the given drug, the dose size being set in fixed increments for a given state. The drug expelling means has a first state in which an increment corresponds to a first volume of drug, and a second state in which an increment corresponds to a second volume of drug, wherein the drug expelling means is set in the first state by means of the first identifier when a first reservoir unit is mounted, and the drug expelling means is set in the second state by means of the second identifier when a second reservoir unit is mounted.
摘要:
Drug delivery device adapted to receive a drug-filled cartridge comprises a piston drive member for expelling a dose of drug from a loaded cartridge, a motor for driving the piston drive member, a rechargeable electric power source, an electrical connector allowing an external connector of a power source to be connected for recharging the power source, and a controller for controlling operation of the motor. The controller is adapted to detect a condition indicative of an external power source being connected to the electrical connector and subsequently disable the expelling assembly to thereby prevent that drug can be expelled from a loaded cartridge when an external power source has been connected to the electrical connector.
摘要:
A device for administering a fluid medicament by injection comprises a dosing portion (1) with a collapsible reservoir (10). The reservoir (10) has a maximum volume in an extended state and a minimum volume in a collapsed state. Prior to injection, the reservoir (10) is in the extended state and contains a liquid to be administered, and the reservoir (10) is biased towards the collapsed state. The device further comprises a needle (2), wherein a lumen (20) of the needle (2) is in fluid communication with the reservoir (10). The device further comprises a shield portion (3) with a plug (30). Prior to injection, the shield portion (3) is in a deployed position where the plug (30) blocks the lumen (20) of the needle (2). The shield portion (3) is adapted to move in response to an actuation force from the deployed position to a retracted position where the lumen (20) of the needle (2) is open, thereby causing the reservoir (10) to shift to the collapsed state to expel the liquid through the needle.
摘要:
A drug delivery device adapted to receive a drug-filled cartridge (10), comprising dose setting means allowing a user to set a desired dose of drug to be expelled, an electronic controller (70,270) adapted to control a motor (51) to move a drive member to thereby expel an amount of drug from a received cartridge corresponding to a set dose, and means for estimating the amount of free air in a loaded cartridge. The controller is adapted to detect an error state if the estimated amount of free air in the cartridge is larger than or equals a given percentage of the amount of drug corresponding to a set dose.
摘要:
The invention relates to a drive mechanism for a medical injection device in which a piston rod (10) has a threaded outer surface and a not circular cross-section and engages a nut assembly (2, 102, 202) having either an internal thread (41, 141, 241) mating the outer thread (11) of the piston rod (10), or a shape mating the non-circular cross section of the piston rod (10). The nut assembly (2) comprises a first part (30, 130, 230) and a second part (40, 140, 240), which are connected by a hinge allowing the first part (30, 130, 230) and the second part (40, 140, 240) to tilt relatively to each other in a non-axial plane.