A drive mechanism (100) for use with a drug container (50) in a drug pump, the drug container (50) having a barrel (58) and a plunger seal (60), including a tether, an electrical actuator (101) and a gear interface. Rotation of the gear interface is controlled by the actuator (101). A gear assembly rotationally engages with the gear interface. The gear assembly includes a main gear and a regulating mechanism. Release of the tether is metered by the gear assembly through the regulating mechanism. A piston (110, 1110, 2110) is connected to the tether and is disposed in the barrel (58) and configured to translate axially within the container. A biasing member is disposed at least partially within the barrel (58) and is retained in an energized state between the piston (110, 1110, 2110) and drive housing, wherein the release of the tether controls the free expansion of the biasing member from its energized state and the axial translation of the piston (110, 1110, 2110).

A liquid transfer device includes a monolithic trifurcated connector body defining a barrel at a first end thereof, a single IV spike at a second end thereof and a vial adapter lumen at a third end thereof. An IV port is connected to the barrel. The single IV spike has a first IV spike lumen fluidly connected at a proximal end thereof with only the vial adapter lumen via the trifurcated connector body and a second IV spike lumen fluidly connected at a proximal end thereof with only the IV port via the trifurcated connector body, thereby separating fluid communication between the vial adapter and the single IV spike from fluid communication between the IV port and the single IV spike.

A liquid transfer device includes a monolithic trifurcated connector body defining a barrel at a first end thereof, a single IV spike at a second end thereof and a vial adapter lumen at a third end thereof. An IV port is connected to the barrel. The single IV spike has a first IV spike lumen fluidly connected at a proximal end thereof with only the vial adapter lumen via the trifurcated connector body and a second IV spike lumen fluidly connected at a proximal end thereof with only the IV port via the trifurcated connector body, thereby separating fluid communication between the vial adapter and the single IV spike from fluid communication between the IV port and the single IV spike.

The invention relates to a device and a method for connecting a vial [1] to a container or to a fluid line and transferring the contents of a vial [1] to a container or to a fluid line, wherein the device has a first holder [4] which is suitable for accommodating a connecting device [8], a second holder [5] which is suitable for accommodating a vial [1], an actuating means [7] and a connecting device [8] which consists of an annular housing [13], an inside part [12] having at least one puncture device [14] and a tube connection [16], wherein the annular housing [13] of the connecting device [8] can be constructed to be rotatable about the inside part [12] in the function of a valve, so that by rotation of the housing [13] the flow paths of the connecting device [8] can be opened and closed.

An infusion set (1) includes a first flow channel (10) constituted by a pliable tube (10a) and including a spike (11) provided at one end thereof, a second flow channel (20) constituted by a pliable tube (20a) and including a lock connector (50) provided at one end thereof, the lock connector (50) including a lock mechanism (60) that is brought into engagement with a female connector (200), a third flow channel (30) constituted by pliable tubes (30a, 30b and 30c) and including a male connector (31) provided at one end thereof, and a three-way stopcock (40) to which another end of the first flow channel, another end of the second flow channel and another end of the third flow channel are connected. The three-way stopcock includes a handle (41) that can be switched between a first position that brings the first flow channel and the third flow channel into communication with each other and a second position that brings the second flow channel and the third flow channel into communication with each other.

An infusion set (1) includes a first flow channel (10) constituted by a pliable tube (10a) and including a spike (11) provided at one end thereof, a second flow channel (20) constituted by a pliable tube (20a) and including a lock connector (50) provided at one end thereof, the lock connector (50) including a lock mechanism (60) that is brought into engagement with a female connector (200), a third flow channel (30) constituted by pliable tubes (30a, 30b and 30c) and including a male connector (31) provided at one end thereof, and a three-way stopcock (40) to which another end of the first flow channel, another end of the second flow channel and another end of the third flow channel are connected. The three-way stopcock includes a handle (41) that can be switched between a first position that brings the first flow channel and the third flow channel into communication with each other and a second position that brings the second flow channel and the third flow channel into communication with each other.

Devices, systems, and methods for performing injections with lowered likelihood of infection include catheters and other injection means with protective coverings. The protective covering can protect the catheter or other injection means before, during, or before and during insertion of the catheter into an insertion site. The protective covering includes two or more parts of interlocking protrusions and channels that allow for sliding motion of the parts relative each other but that resist separation of the parts in the direction perpendicular to the long axis of the two or more parts.

An assembly for coupling a drug delivery device to a cartridge is disclosed. Optionally the assembly includes a coupling, for example a cannula, having one end extending toward the cartridge. The cartridge is optionally aligned by a guide. Optionally the cartridge has a limited freedom of movement. The coupling is optionally supported by a mount. In some embodiments, the mount is compliant enough that the end of the coupling that extends toward may move to said limited freedom of movement under a force less than a leak threshold of the connection between the coupler and the cartridge.

An assembly for coupling a drug delivery device to a cartridge is disclosed. Optionally the assembly includes a coupling, for example a cannula, having one end extending toward the cartridge. The cartridge is optionally aligned by a guide. Optionally the cartridge has a limited freedom of movement. The coupling is optionally supported by a mount. In some embodiments, the mount is compliant enough that the end of the coupling that extends toward may move to said limited freedom of movement under a force less than a leak threshold of the connection between the coupler and the cartridge.

An infusion set includes a base with a rigid piercing cannula or a soft catheter and rigid introducer needle. The infusion set also includes a line set with a fluid connector. The base and line set are configured such that the fluid connector can be used as a protector for the piercing cannula or the soft catheter, either before the device is attached to a user, or after the device is detached from the user, or both.