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.

An 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.

An automated dose-response record system including a module for housing waste-heat producing electronic and electromechanical medical equipment including at least one physiologic monitor, and including a system to measure, temporally correlate and record dose and response events.

A method of mixing a liquid composition that includes microparticles dispersed in an aqueous liquid carrier may involve a first premixing step and a second premixing step. During the first premixing step a receptacle is oscillated about a longitudinal axis clockwise and counter-clockwise from a first reference point through a first angle of rotation for a first period of time and at a first angular velocity. During the second premixing step the receptacle is oscillated about the longitudinal axis clockwise and counter-clockwise from a second reference point through a second angle of rotation for a second period of time and at a second angular velocity. In examples, the first angle of rotation is smaller than said second angle of rotation, and the first period of time is shorter than the second period of time.

For controlling the movement of the push device of a pump of the syringe driver-type, the pump comprising a casing (100), a syringe cradle (200) for a syringe (400), a push device (300) mobile relative to the casing (100) and capable of being driven in rotation parallel to the longitudinal axis of the syringe by driving means, clutch means (310, 350, 351) for engaging or disengaging the push device on the driving means, the push device is disengaged from the driving means, in order to move it manually, and the presence or absence of a contact between the push device and the syringe head is determined. If the push device is not in contact with the syringe head, it is advanced manually. Blocking of the advance movement of the push device is triggered only if, at the beginning, the push device was not in contact with the syringe head.

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 syringe having a syringe body defining an elongate cavity therein with a non-circular internal cross-sectional profile, and a syringe plunger operable to selectively travel within the hollow cavity with a non-circular external cross-sectional profile that substantially mirrors the syringe body's internal cross-sectional profile for mating engagement thereof. The enteral syringe may also have venting features and support features for hanging from a support structure.

Provided is a cassette unit suitable for use with an auto-injector having an electrically powered drive unit. The cassette unit comprises a cassette unit housing defining a cassette unit housing cavity and a needle projection aperture. The housing cavity may receive a syringe. Axially movable within the barrel of the syringe for forward movement into contact with the syringe plunger, there is a plunger slaving part defining a circumferential wall arranged for frictional sliding relationship with the inner wall of the barrel, a rear drive-receiving face and a front plunger-contacting face. The plunger slaving part is arranged such that when a drive load is applied to its rear drive-receiving face to bring the front plunger-contacting face into contact with the plunger the drive load is evenly transmitted. The circumferential wall is provided with slide restrictors that restrict frictional sliding movement thereof in relation to the inner wall of the barrel.

A pump module for an infusion pump includes a plunger-cylinder unit that can be coupled to the infusion pump in order to deliver fluid from a fluid feed line into a fluid drain line to a patient. The plunger-cylinder unit has a delivery chamber that is fluidically connected to the fluid feed line and the fluid drain line. The delivery chamber is delimited by the cylinder (14). The plunger can be moved linearly/back and forth in the axial direction. A plunger seal seals the plunger in relation to the cylinder. The section of the wall of the cylinder, over which the plunger seal passes during the back-and-forth motion of the plunger, is sealed in a sterile manner in relation to the surroundings.

The simulator includes a chemical liquid information acquisition section configured to acquire an amount of contrast medium, a target value acquisition section configured to acquire a target duration for which a target pixel value is maintained, a protocol acquisition section configured to acquire a contrast medium injection protocol, and a prediction section for determining a predicted duration, the prediction section configured to simulate the time-dependent change in the pixel value in the tissue of the subject based on the injection protocol and the amount of the contrast medium, and the prediction section compares the predicted duration with the target duration to re-simulate, in a case where the predicted duration is shorter than the target duration, the time-dependent change in a condition where a greater amount of the contrast medium than the amount of the contrast medium used in the simulation is injected to redetermine the predicted duration, and in a case where the predicted duration is longer than the target duration, the time-dependent change in a condition where a smaller amount of the contrast medium than the amount of the contrast medium used in the simulation is injected to redetermine the predicted duration.