A reciprocating syringe injector includes an inside arm and an outside arm pivotally mounted to the inside arm. A spring bias biases the inside arm away from the outside arm. A small syringe retainer is formed on the inside arm. A ratchet member extends from the inside arm toward the outside arm. The ratchet member has ratchet teeth protruding from the ratchet member. A ratchet engagement extension is pivotally mounted to the outside arm. The ratchet engagement extension has a ratchet engagement edge that engages the ratchet teeth formed on the ratchet member. The reciprocating syringe injector also optionally includes a large reservoir retainer mounted to the small syringe retainer. The large reservoir retainer could also be mounted anywhere on the inside arm.

The application discloses a multi-chamber, multi-formulation fluid delivery system, comprising a multi-chamber applicator in fluid communication with multi-chamber packaging. Applicators according to the instant disclosure have reduced squeeze-strength requirements, and are useful for dispensing fluids, including medicaments, to animals, including livestock animals. The multi-chamber packaging provides separate storage for formulations containing incompatible active ingredients, and is suitable for use with the multi-chamber applicator. The application also discloses methods for using the system to simultaneously deliver multiple active ingredients, at least some of which are not suitable for co-formulation, thus reducing the time, economic burden and animal stress involved with applying multiple, separate formulations to animals.

A veterinary syringe includes a syringe cylinder having a front dispensing end and a rear end. A handle has a front gripping part on the syringe cylinder and a rear gripping part fastened pivotably to the front gripping part. A metering device sets the fluid volume to be dispensed. The rear end portion of a plunger rod is fastened to the rear gripping part such that by pivoting of the rear gripping part in the direction of the syringe cylinder, the plunger rod is moved in the syringe cylinder to the front dispensing end to dispense fluid from the syringe cylinder. An adjustable front stop sets the maximum stroke of the plunger rod. The rear end portion of the plunger rod is fastened pivotably to the rear gripping part such that a relative pivoting movement is the only possible relative movement between the plunger rod and the rear gripping part.

An automatic applicator for liquid pharmaceutical preparations, particularly for multiple injection application of set doses of a medicine from an exchangeable container is provided. The automatic applicator includes a body housing connected to a housing of an exchangeable container with a medicine having a plunger, the said plunger being displaced only linearly by an integrated driving unit, suitable for immobilizing, driving, leading linearly and blocking rotation of the plunger, driven via a double action clutch, by a tensioning spring situated in the body housing, the spring tensioned by a rotary hand-dose-setting ring via the double action clutch, wherein the driving unit is activated by a trigger unit and a dose is indicated by an indicating arrangement. The automatic applicator further includes at least one block key placed in an upper part of a ratchet barrel, collaborating with at least one key placed in an internal part of the body housing.

A mechanical patient-controlled analgesia device for injecting medicine into a patient's IV, includes an IV reservoir and a syringe communicated to the IV reservoir and having a syringe plunger. A mechanical biasing element is provided for exerting bias on the syringe plunger in a first syringe-filling direction to draw medicine from the IV reservoir into the syringe. An injection plunger is operable by the patient to move the syringe plunger in a second injection direction against the bias to inject the medicine in the syringe into a patient's IV. The injection plunger is movable independently of the syringe plunger and is engaged with but unconnected to the syringe plunger when the patient moves the injection plunger to inject the medicine. The patient can inject only a calibrated amount of medicine drawn into the syringe as determined by calibration of the biasing element and a metering element for a given viscosity of the medication.

An automatic applicator for liquid pharmaceutical preparations, particularly for multiple injection application of set doses of a medicine from an exchangeable container is provided. The automatic applicator includes a body housing connected to a housing of an exchangeable container with a medicine having a plunger, the said plunger being displaced only linearly by an integrated driving unit, suitable for immobilizing, driving, leading linearly and blocking rotation of the plunger, driven via a double action clutch, by a tensioning spring situated in the body housing, the spring tensioned by a rotary hand-dose-setting ring via the double action clutch, wherein the driving unit is activated by a trigger unit and a dose is indicated by an indicating arrangement. The automatic applicator further includes at least one block key placed in an upper part of a ratchet barrel, collaborating with at least one key placed in an internal part of the body housing.

A hand-activated syringe (14) is disclosed that uses a vacuum to retract a plunger (54) of the syringe (14) to draw fluid into a syringe body (18). A first seal (76) with the plunger (54) and a second seal (64) with the plunger (54) define a vacuum chamber (82). The spacing between the first seal (76) and the second seal (64) changes in response to the plunger (54) moving relative to the syringe body (18). Advancing the plunger (54) in a direction associated with a discharge stroke creates or increases a vacuum within the vacuum chamber (82) by increasing a spacing between the first seal (76) and the second seal (64). This vacuum thereafter may be used to retract the plunger (54) by decreasing a spacing between the first seal (76) and the second seal (64), and to thereby draw fluid into the syringe (14) from a fluid source (86).

A mechanism in the body is used to drive a piston rod and comprises means for guiding the movement of the piston rod relatively to the body while delivering the drug. Further means are provided for releasing the piston rod from the means for guiding the movement, thus enabling a reset of the piston rod to a start position, especially after the receptacle has been emptied and is to be refilled. The device is constructed in such a manner that a reset of the piston rod is facilitated by a stop element inhibiting a reversal of the movement of the piston rod when being reset.

A medicament container holder is presented having a body designed to accommodate at least a part of a medicament container and is arranged with a medicament delivery member surrounded by a needle shield; a holding element arranged at a proximal end of the body for holding a neck portion of the medicament container. The holding element being flexible in generally radial directions and support elements provided between the holding element and the body, where the support elements allow generally outwardly movement of the holding element from a first initial position during passing of the needle shield when the medicament container is placed in the medicament container holder, ensuring inwardly movement of the holding element after passing of the needle shield, returning the holding element towards the first initial position to a second position, and promoting generally inwardly action of the holding element to a third position during attachment of a needle shield remover to the needle shield.

The invention concerns a device (10) comprising: a barrel (12); an elastic system (14) separating the barrel into a solution chamber (36) and a depressurized chamber (38); a first opening (16) to the solution chamber; a piston (18) able to be moved inside the depressurized chamber from a rest configuration to a pulled configuration in order to suck said solution into the solution chamber; a second opening (20) communicating with the depressurized chamber via a flow restrictor (21), and a regulation system (22) able to close the second opening to make the depressurized chamber airtight when the piston is sucking the solution and able to open the second opening to release the elastic system and to eject the solution out of the solution chamber.