An injection device and an injection device trainer for training a user to use an injection device. Each one of the injection device and the injection device trainer can include: a body portion; and an actuator positioned towards a proximal end of the body portion, the actuator moveable from a proximal position to a distal position; wherein the body portion comprises a body protrusion and the actuator comprises a latch that is arranged to couple with the body protrusion when the actuator is in the distal position, thus holding the actuator in the distal position.

A method and device for delivering medications that includes a syringe body, a cartridge nest with an application tip, a plunger actuator, and an electronic lock subassembly adapted for preventing administration of the medication until specific conditions are met. The medicine cartridge may comprise a form of a digital security key to prevent the device from administering medication unless specific configurations and conditions are met. The device may further be adapted with pre-programmed information and may be used with a smartphone, tablet, or computer application. The electronic lock subassembly will only permit the administration of medicine when the patient and/or administrator is verified via facial and voice recognition, biometric identifier, or other unique information. Upon proper permission, the device may be used to administer medicine, including injecting medicine into the nasal cavity of a patient.

Drug delivery systems with reduced hold-up volumes are provided. The drug delivery systems include a cartridge configured to hold a liquid drug. A cartridge stopper is positioned in a first portion of the cartridge. A needle guide component is positioned within the cartridge stopper. A needle is positioned within a central opening of the needle guide. A plunger is positioned in a second portion of the cartridge. The plunger includes a fluid path pocket facing and aligned with the central opening of the needle guide component. The plunger is driven toward the cartridge stopper to expel the liquid drug from the cartridge through the needle. An end of the needle can be positioned within the fluid path pocket when the plunger is pushed against the cartridge stopper, ensuring that only a small volume of the liquid drug remains in the cartridge when delivery of the liquid drug is completed.

An assembly for a drug delivery device and an associated drug delivery device are provided. The device has a drug delivery device housing and a medicament contained in the drug delivery device housing. A clutch is established between the dose knob and the dial link to prevent inadvertent proximal axial movement of the lead screw away from the cartridge piston, which can lead to dosing inaccuracies.

A micro-metering device with a constant flow rate, including a rotary shear valve, a mounting seat, a rotation drive assembly, an injection drive assembly and a controller. The rotary shear valve includes a valve main body and a valve spool. The valve main body is provided with a main flow channel and a plurality of branch flow channels. The valve spool is rotatably arranged inside the valve main body, and is configured to communicate the main flow channel with different branch flow channels. A pressure sensor is provided inside the valve main body, and is communicated with the main flow channel. The pressure sensor is configured for detecting a pressure inside the main flow channel. Whether the switching of the liquid path is correct is determined according to the pressure in the main flow channel.

A syringe has a syringe body configured to receive a product for injection. Gripping wings are arranged at one end of the syringe body. A piston rod is mounted so as to be able to slide inside the syringe body. A stop is arranged at a first end of the piston rod and has an end-of-travel position inside the syringe body. A pusher is arranged at a second end of the piston rod. The pusher has a mass greater than or equal to a threshold value beyond which the syringe has a center of gravity situated outside the syringe body when the stop is in the end-of-travel position.

A method and apparatus for use in controlling a dispensing rate of medication or other substance via a syringe, including, without limitation, into a patient, intravenous line port or heparin lock. A force (typically manual) is applied to an input plunger of a dashpot, which is directly coupled to a piston which, in turn, is coupled to an output plunger. The force applied to the input plunger is buffered and transmitted to the output plunger. The output plunger acts upon the plunger of a conventional syringe, thereby resulting in flow of medicine or any other substance from the syringe at a desired and controlled flow rate.

An incremental syringe useful for multiple injections of medications like botulinum toxin is provided. The syringe includes detents on the syringe plunger which provide a tactile feeling, a discrete audible sound or click, or preferably both, for every unit of medication aspirated or injected to or from an individual syringe. Hence, there is no need to look at the syringe, or bring it to the eye level, during use thereof. In some embodiments, a second set of detents is included, and in some embodiments a third set of detents is included. Syringe plungers useful for combining with a syringe body to produce such an incremental syringe are also described.

A system for delivering an injection of a fluid into a void within a subject is disclosed. A barrel extends from a first end to a second end and forms a lumen extending from the first end to the second end. A plug and a floating seal are arranged within the lumen. A hollow needle includes a distal end with an opening for fluid to flow from the lumen. The plug, the barrel and the floating seal include material and dimensions selected based on a threshold flowrate for a fluid arranged within the lumen to: overcome a force opposed to a force being applied to the fluid in the lumen to move the floating seal and the hollow needle into a tissue of the subject, and succumb to the opposing force to displace the fluid through the opening into the void.

A liquid medicine injection device includes: a liquid medicine storage unit including a cylinder including a space configured to store liquid medicine therein and a discharge hole connected to the space, and a piston arranged inside the cylinder and moving toward the discharge hole depending on discharge of the liquid medicine; a first electrode on an outer surface of the cylinder; a second electrode on the outer surface of the cylinder, the second electrode facing the first electrode with the piston therebetween; and a circuit unit including a substrate electrically connected to the first electrode and the second electrode.