摘要:
A fluid delivery device comprises a drive unit including an actuator and one or more first features and a cartridge filled with a fluid prior to being inserted into the housing. The cartridge having a fluid reservoir sealed at one end by a movable piston and sealed at another end by a pierceable septum. The cartridge includes one or more second features that are configured to align and mate with the one or more first features allowing the cartridge to be inserted into the drive unit. The piston is moveable by the actuator once the cartridge is inserted into the drive unit.
摘要:
The invention relates to a medical injection device comprising a container body (1) and a stopper (2) in gliding engagement within the container body (1) for expelling a fluid (3) through an opening of said container body (1), wherein: —at least the distal portion (20) of the stopper (2) that is in contact with the fluid (3) is made of a thermoplastic polyolefin, —the stopper (2) further comprises at least one O-ring (4, 4′) maintained in at least one peripheral groove (210, 210′), —said O-ring (4, 4′) is made of a butyl-type rubber; and —the cross-section of said peripheral groove (210, 210′) is designed so as to compress both axially and radially the O-ring (4) when said O-ring (4) is engaged in the peripheral groove (210) between the stopper (2) and the inner wall (10) of the container body (1).
摘要:
A dosing unit for an ambulatory infusion system, including a metering pump unit including a dosing cylinder and a piston, the piston in sealing sliding engagement inside the dosing cylinder; a valve unit having a filling port and a draining port, the filling port being couplable with a liquid drug reservoir, the draining port being couplable with an infusion site interface, and a shut-off body movable between a filling position where it couples the filling port with the dosing cylinder and a draining position where it couples the dosing cylinder with the draining port; and a valve driver coupler coupled to or integral with the shut-off body and being the output element of a step switching mechanism. Also disclosed is a drive unit that may be used in combination with a dosing unit, an ambulatory infusion system and a method for coupling a dosing unit and a drive unit.
摘要:
An infusion pump assembly is disclosed. The infusion pump assembly includes a locking tab and a pump barrel inside a pump barrel housing, where the pump barrel accommodates a reservoir assembly. The reservoir assembly includes a reservoir and a plunger rod. The infusion pump assembly also includes a locking disc at a terminus of the pump barrel. The locking disc includes a clearance hole for the plunger rod. The locking disc also includes at least one locking tab notch in close proximity with the locking tab. The locking tab is in moveable engagement with the locking tab notch, and the reservoir moves the locking tab from a locked position to an unlocked position when the plunger rod is inserted through clearance hole. The locking disc rotates upon torque being applied to the reservoir assembly, the locking disc rotating from a non-loaded position to a loaded position with respect to the plunger rod and a drive screw.
摘要:
A fluid delivery system comprises: a control interface and multiple unique loading guides. The control interface of the fluid delivery system is configured to accept a fluid pump assembly. The multiple loading guides are retractable from the fluid delivery system to retain and control movement of a facing of the fluid pump assembly to contact the control interface on the facing of the fluid delivery system. In one configuration, the control interface is disposed in a cavity of the fluid delivery system; the multiple loading guides are disposed at locations in proximity to the cavity. The multiple loading guides can be configured to slidably retract in unison to support substantially orthogonal insertion of the fluid pump assembly into the cavity of the fluid delivery system.
摘要:
Various structures are used in a front-loading injector, for mounting the syringe to the injector and/or preventing leakage of spilled fluid from an external surface of a syringe into the vicinity of the drive ram. A conically-shaped structure on the rearward end of the syringe is specifically disclosed.
摘要:
A delivery device includes first and second housing portions that selectively engage and disengage. A reservoir on one housing portion operatively engages a drive device and/or a needle inserting device on the other housing portion. Upon proper engagement of the housing portions, the reservoir operatively couples to the drive device and/or the needle inserting device. A first magnet on the first housing portion and a second magnet (or a magnetically-attractive material) on the second housing portion are positioned to magnetically interact with each other, upon operative engagement of the housing portions. A third magnet on the second housing portion may be opposed to the first magnet to help align the housing portions for connection. A magnet-responsive device may be on one or both housing portions to detect alignment and/or connection of the housing portions.
摘要:
A portable device for infusion of liquid drugs contained in a pair of syringes into a patient's body is disclosed. Said device includes a body housing a driving system and arranged to receive a pair of interchangeable syringes, and said driving system includes a single electric motor and a first and a second mechanical assembly, or a single mechanical assembly, each assembly being associated with one of the syringes or with both syringes, respectively, and being arranged to convert the rotary motion of the motor into a linear motion and to apply said linear motion to a pusher associated with the plunger of the respective syringe, both mechanical assemblies, or the single mechanical assembly, being operated for simultaneously causing the forward motion of the plunger in one syringe and the backward motion of the plunger in a second syringe.
摘要:
An infusion pump assembly is disclosed. The infusion pump assembly includes a locking tab and a pump barrel inside a pump barrel housing, where the pump barrel accommodates a reservoir assembly. The reservoir assembly includes a reservoir and a plunger rod. The infusion pump assembly also includes a locking disc at a terminus of the pump barrel. The locking disc includes a clearance hole for the plunger rod. The locking disc also includes at least one locking tab notch in close proximity with the locking tab. The locking tab is in moveable engagement with the locking tab notch, and the reservoir moves the locking tab from a locked position to an unlocked position when the plunger rod is inserted through clearance hole. The locking disc rotates upon torque being applied to the reservoir assembly, the locking disc rotating from a non-loaded position to a loaded position with respect to the plunger rod and a drive screw.
摘要:
A delivery device includes first and second housing portions that selectively engage and disengage. A reservoir on one housing portion operatively engages a drive device and/or a needle inserting device on the other housing portion. Upon proper engagement of the housing portions, the reservoir operatively couples to the drive device and/or the needle inserting device. A first magnet on the first housing portion and a second magnet (or a magnetically-attractive material) on the second housing portion are positioned to magnetically interact with each other, upon operative engagement of the housing portions. A third magnet on the second housing portion may be opposed to the first magnet to help align the housing portions for connection. A magnet-responsive device may be on one or both housing portions to detect alignment and/or connection of the housing portions.