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).

A pump device (1) for administering a medical fluid to a patient comprises a holding device (10) for receiving a syringe barrel (20) of a syringe (2), the holding device (10) comprising a stationary section (101) and a holding member (11) movable with respect to the stationary section (101) between an opened position and a closed position, wherein the holding member (11) is configured to secure, in the closed position, the syringe barrel (20) of a syringe (2) received on the holding device (10) with respect to the stationary section (101). A shaft (130) is coupled to the holding member (11), the shaft (130) being constituted to rotate during a movement of the holding member (11). Herein, a damping device (14) comprises a movable part (140) connected to the shaft (130) and rotatable together with the shaft (130) and a stationary part (141) fixed with respect to the stationary section (101) of the holding device (10), a rotational movement of the movable part (140) with respect to the stationary part (141) providing for a damping of the movement of the holding member (11). In this way a pump device for administering a medical fluid to a patient is provided which may provide for a secure fastening of a syringe barrel and at the same time helps to avoid a damaging of in particular smaller syringes by clamping forces of the holding member.

A medical device rack in which a medical device is detachably mountable, the medical device rack including: a main body; and a mounting section provided in the main body, the mounting section being configured such that the medical device is detachably mountable in a posture oriented in a lateral direction. The mounting section includes a supporting portion configured to be detachably fitted to the medical device to support the medical device in a rotatable manner.

An infusion pump can include a syringe receptacle, a retention mechanism, a drive mechanism, and a keyed lock. The retention mechanism can inhibit removal of the syringe from the receptacle when in an engaged state, and enable removal of the syringe when in a disengaged state. The drive mechanism can include a pusher to selectively couple to a thumb press of the syringe, a motor coupleable to the pusher, and a clutch to couple and decouple the motor to the pusher. The keyed lock can operate in coordination with the retention and drive mechanisms such that, if: the keyed lock is locked, the retention mechanism is in the engaged state, and the pusher is coupled to the thumb press of the syringe, then as long as the keyed lock remains locked, the retention mechanism is constrained to the engaged state and the clutch to the coupled state.

An engagement mechanism associated with a reciprocally movable piston of a fluid injector is configured for releasably engaging an engagement portion at a proximal end of a rolling diaphragm syringe having a flexible sidewall configured for rolling upon itself when acted upon by the piston. The engagement mechanism has a plurality of engagement elements reversibly and radially movable relative to the engagement portion of the syringe between a first position, where the plurality of engagement elements are disengaged from the engagement portion of the syringe, and a second position, where the plurality of engagement elements are engaged with the engagement portion of the syringe. The engagement mechanism further has a drive mechanism for moving the plurality of engagement elements between the first position and the second position.

An injection system has: a gasket having multiple engaging claws, and a distal end portion having across-sectional shape in which a length in a height direction of the cross-sectional shape is longer than a length in a width direction; a ram engaged with the gasket; a cylinder into which the gasket is inserted; and an injection device configured to move the ram and injecting a chemical solution in the cylinder. Each of the engaging claws includes an inner surface which defines a hole having an inlet with an enlarged diameter and inclined in a direction away from a perpendicular line passing through a center of the hole. The engaging claws are displaced between a widened position and a narrowed position. Two engaging claws aligned in the height direction have the same shape and size, and two engaging claws aligned in the width direction have the same shape and size.

An injector system for injecting fluid includes a syringe and an injector. The syringe includes a body and a plunger movably disposed within the body. The plunger has at least one flexible leg extending toward the rearward end of the body. The injector has a housing with a front plate, a drive member at least partially disposed within the housing and operable to engage the plunger, and a syringe release assembly operable to release the syringe. The syringe assembly includes a syringe release gear that forms an enclosure for receiving the syringe when the syringe is fully seated within the housing and a plunger release tube surrounding at least a portion of the drive member. The plunger release tube has a first end rotationally engaged with the syringe release gear. Rotation of the syringe release assembly releases the at least one flexible leg from the drive member.

A pump device (10) operable with a syringe (11) having a barrel (12) and a plunger (13). The pump device (10) is operable to cause relative movement between the syringe plunger (13) and the syringe barrel (12) for discharging fluid from the syringe (11). The pump device (10) comprises a portion (31) adapted to engage the syringe barrel (12), and a drive mechanism for moving the syringe plunger (13) relative to the syringe barrel (12) to discharge fluid from the syringe (11). The drive mechanism comprises an actuator (45) adapted to engage the syringe plunger (13) and a power mechanism (61) for moving the actuator (45) to effect movement of the syringe plunger (13) relative to the syringe barrel (12). The pump device (10) thus provides a syringe driving means. There is also provided an infusion system comprising a syringe driving means, the syringe driving means comprising the pump device (10). Further, there is provided an infusion system comprising a syringe driving means operable to maintain a constant pressure within a syringe and tubing with viscosity corrections for various antibiotic concentrations.

All infusion device (1) for administering a medical fluid to a patient comprises a receptacle (11) for receiving a syringe (2), a pusher device (12) movable in a pushing direction (P) for acting onto a piston (21) of the syringe (2) received in the receptacle (11), a driving rod (14), an electric drive device (141) for driving the driving rod (14), and a clutching device (13) comprising a frame member (131) and at least one clutch element (130A, 130B) movably arranged on the frame member (131). The at least one clutch element (130A, 130B) is constituted to operatively connect, in a clutched state, the driving rod (14) to the pusher device (12) for driving the pusher device (12) by the electric drive device (141). The clutching device (13) is actuatable to assume an unclutched state in which the operative connection between the driving rod (14) and the pusher device (12) is released. Herein the clutching device (13) comprises a lock element (19) for locking the at least one clutch element (130A, 130B) in the clutched state. In this way, an infusion device is provided which in an easy and reliable manner allows for maintaining the clutching device in the clutched state during operation of the infusion device.

A vial assembly includes a vial and a needle with at least one port. The vial includes a particulate material, a septum, a neck region including a first width, and a particulate region including a second width greater than the first width. The vial assembly is configured to move to a locked position. The needle may be configured to puncture the septum with the at least one port configured to be in the neck region when in the locked position. The at least one port may be configured to inject a fluid into the vial assembly to mix with the particulate material upon actuation of a vial engagement mechanism in a first direction and to receive a resulting mixed fluid from the vial assembly upon actuation of the vial engagement mechanism in a second direction opposite the first direction.