The present invention is directed to a needle sensor assembly and a method of using same. The needle sensor assembly includes a needle sensor housed within the needle sensor assembly. The needle sensor assembly is configured to be attached to an injection device. When the needle sensor assembly is attached to the injection device, the needle sensor is configured to detect if a needle positioned for use in the injection device is misaligned, absent, or broken.

In a needleless syringe according to the present invention, a current is supplied to a solenoid coil to generate a magnetic field so as to move a moving magnetic body and a piston forward, and when the current to the solenoid coil is cut off, an elastic member for the moving magnetic body moves the moving magnetic body backward and an elastic member for the piston moves the piston backward, so that the piston to be injected by pressurizing a drug is configured to reciprocate repeatedly forward and backward and thus, a predetermined drug can be repeatedly injected at high speed. In addition, according to the present invention, time for which the current is applied to the solenoid coil, is adjusted to minimize recoil without adding a recoil offset structure so that the structure is simple and convenience of use can be improved.

The present subject matter relates to semi-automatically controllable syringe (100A-100E, 200, 300, 400, 500, 600, 710, 800A) comprising barrel (102A, 102B, 202, 302, 402), plunger (104, 204, 304, 404, 508, 606), actuating member (116, 124, 206, 306, 406, 510, 608), biasing member (110, 210, 310, 410, 506), and movement control mechanism (118, 120, 218, 314, 418, 516, 618). Actuating member (116, 206, 306, 406, 510, 608) is to move plunger (104, 204, 304, 404, 508, 606). Biasing member (110, 210, 310, 410, 506) biases upon plunger movement in first direction and applies restoring force on plunger (104, 204, 304, 404, 508, 606) towards second direction. Movement control mechanism (118, 120, 218, 314, 418, 516, 618) includes pin-receiving members (118B, 120B, 218B, 314B, 418B, 516B, 618B) and pin (118A, 120A, 218A, 314A, 418A, 516A, 618A) to provide variable limit for plunger movement.

An automatic injection device has an insertion needle configured to be inserted into a patient and a drug container which contains a pharmaceutical product and includes a plunger. The automatic injection device also has a fluid path which fluidly connects the drug container to the insertion needle, and a drive system configured to cause linear movement of the plunger to force the pharmaceutical product into the fluid path. The passive drive system has a movable element. The movable element has a shape memory alloy and is configured to change shape to move the plunger.

An injector includes an injection needle and an activation button assembly operatively connected to the injection needle. The activation button assembly is translatable from an unactuated position to an actuated position, the actuated position being visually different than the unactuated position. A position of the activation button assembly between the unactuated position thereof and the actuated position thereof defines a threshold point, and movement of the activation button assembly beyond the threshold point secures the activation button assembly in the actuated position, and drives the injection needle from a retracted position thereof to an injection position thereof.

A device for the needle-free injection of a fluid includes a first injector including a piston-cylinder arrangement in which a spring-pretensioned piston rod is guided by its front end in a cylinder for receiving the fluid to be injected. The cylinder opens into a nozzle at the front dispensing end via a first nonreturn valve. The cylinder with the first nonreturn valve and the nozzle form a releasable cylinder section in which a piston rod guide is arranged releasably at the end facing away from the nozzle. The piston rod guide includes a guide bushing to guide the piston rod and a fixing element connected to the guide bushing. In the installed state, the fixing element is fixed in the cylinder section. The fixing element has an engagement region for a tool, into which a tool can be inserted to release the fixing element from the cylinder section.

A medical fluid injection device, a medical fluid transfer device and a method of administering and transferring a medical fluid are disclosed. The device and method may include a compressed gas canister in fluid communication with an expandable elastic bladder positioned within a vial of drug to provide a means to deliver drug through an injection cannula that is movable between a plurality of positions or through a transfer conduit.

A drive unit for an injector includes an elastomeric drive member configured to possess a first elastic potential energy in an elastically stretched state that is releasable to convert the elastic energy to a first biasing force. A selectively releasable plunger rod has a locked position maintaining the elastomeric drive member in the elastically stretched state. A trigger member is biased by a second biasing force into an interlocking position. In the interlocking position, an arm of the trigger member interlocks with a notch of the plunger rod, thereby maintaining the plunger rod in the locked position thereof. The trigger member is selectively movable against the second biasing force to an unlocking position spaced from the notch, thereby releasing the first elastic potential energy into the first biasing force to axially advance the plunger rod and thus advance the piston through the reservoir.

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 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.