A device for mixing a medical agent and associated systems and methods are disclosed herein. In some embodiments, the device comprises (i) a housing defining a chamber configured to contain a fluid and having a longitudinal axis, (ii) a plunger assembly at least partially disposed within the chamber, the plunger assembly comprising a plunger and a stirring member extending along the longitudinal axis, and (iii) an actuating assembly operably coupled to the stirring member. The actuating assembly can have an active state in which the actuating assembly causes a distal end portion of the stirring member to rotate at a predetermined speed.

The present invention relates to a mixing and injector device which can include: a housing having a plurality of separate and distinct chambers disposed therein; one or more displacement mechanisms corresponding to each of the plurality of chambers disposed within the housing; a needle assembly being provided about one of the plurality of chambers, the needle assembly including the following: a septum; a needle being separated from the plurality of chambers by the septum, the needle having a proximal end configured to pierce the septum in an actuated state; and a needle carrier, the needle carrier being configured to translate axially with respect to and toward the septum and pierce the septum and provide fluid communication from the plurality of chambers through the needle in the actuated state.

A frame for engaging at least two fluid containers includes: a first engagement member configured to secure at least a portion of one of the at least two fluid containers; a second engagement member configured to secure at least a portion of another one of the at least two fluid containers; and a body structure connected to the first engagement member and the second engagement member. The body structure is sized and shaped to index the at least two fluid containers with a powered injector system such that the at least two fluid injectors are held in an orientation and distance relative to each other for insertion into at least two pressure jackets associated with the powered injector system.

A double barreled injector assembly for performing multiple sequential vaccinations includes a pair of barrels, each of which is engaged by a first terminus thereof to a bar and extends from a lower face thereof. A respective agent can be positioned in each barrel. Each barrel has an orifice positioned in a second terminus thereof. A pair of actuators is engaged to an upper face of the bar. Each actuator is operationally engaged to a respective barrel and can be actuated by action of a hand of a user to dispense an associated agent through the orifice of the respective barrel into an animal. The injector assembly allows the user to perform multiple sequential vaccinations with two different vaccines and will be useful in vaccination of herds or flocks of livestock, such as poultry, cattle, and the like.

A fluid injector system for delivering a multi-phase fluid injection to a patient and methods of fluid delivery is disclosed. Methods of creating and using a multi-aspect fluid path impedance model of the injector system are used. Modeling and adjustment of factors that affect impedance and prevent or reduce backflow, reduce the likelihood of fluid flow rate spikes and provide more accurate flow rates and mixing ratios of fluids may be repeated or happen essentially continuously during an injection. The adjustments may be determined before the injection or determined and/or adjusted during the injection. The determination may include sensor feedback commonly used in injectors such as pressure and position feedback as well as other sensors. In all cases, the user can be notified of adjustments through on-screen notices and/or through the recordation of the injection data by a control device of the injector at the conclusion of the injection.

Apparatuses and methods for delivering a fluid, including a viscous fluid. These apparatuses may include a fluid reservoir, two or more piston chambers, a manifold, a delivery port, and a drive assembly and may be configured to inject either a predetermined amount of fluid or a continuous stream of fluid. These apparatuses may also be configured to switch between filling, injection and aspiration modes. These apparatuses may generally be hand-held and lightweight and may provide a significant mechanical advantage to the user.

Systems and methods of micro-infusion of medical fluids are disclosed. Micro-infusion systems may include a pump, a patient interface, tubing between the pump and the interface, and a micro-infusion device along the tubing. A first portion of the tubing above the micro-infusion device is longer than a second portion of the tubing below the device. The micro-infusion device may include a chamber in-line with the tubing, a first valve between the chamber and the first portion of the tubing, a second valve between the chamber and the second portion of the tubing and a third valve between the chamber and a dump chamber. The second valve may be slidably disposed within the chamber. A medical fluid may be provided into the chamber that slides the second valve displacing another fluid in the chamber through the third valve into the dump chamber.

Embodiments of a syringe-based device for delivering fluid include a housing, a port, the port being positioned at about the distal end of the housing, a plunger assembly, the plunger assembly including, a plunger seal, a valve, and a cannula, a first fluid reservoir, where the first fluid reservoir retains a first type of fluid, a syringe including a syringe body, a syringe port, a plunger, and a second fluid reservoir, the second fluid retaining a second type of fluid, and where the syringe transitions from a first configuration in which a first portion of the first fluid type is delivered through the port, to a second configuration in which the second type of fluid in the second fluid reservoir is delivered through the port, to a third configuration in which a second portion of the first fluid type is delivered through the port.

An actuating device having integrated plunger is configured to be removably mounted to an automatic mixing device for a syringe. The actuating device includes lower and upper housings, a trigger member, a lockout ring, a mixing biasing member, a delivery plunger, a plunger biasing member, and a mixing plunger. The mixing plunger is releasably engaged with the trigger member in an initially locked state and engageable with at least one seal of the mixing device. The trigger member is operable to initiate decompression of the mixing biasing member and engagement of the mixing plunger with the at least one seal of the mixing device. The delivery plunger may also be activated to expand from a first, collapsed configuration to a second, expanded configuration by actuation of the trigger member.

A piezoelectric motor includes: a stator having an elastic body, a piezoelectric element and a sliding member adhesively attached to the elastic body; a rotor having an annular member, which includes a disc spring portion and a basic body portion in contact with the sliding member, and a fixture portion to which the annular member is fixed; and a shaft that rotates with the rotor, wherein the disc spring portion of the annular member is fixed to the fixture portion which is fixed to the shaft.