A needleless injector that ejects an injection substance to a target region without using an injection needle, the needleless injector includes: an injector body formed by a resin member; an igniter; a housing part in which the injection substance is accommodated; and a piston that is configured to be moved by ejection energy in a predetermined path, communicating with the combustion chamber, to pressurize the injection substance. A reinforcing member is provided inside the injector body, formed by a metal member to be a tubular member, and extends in an axial direction of the injector body while surrounding at least the igniter and the combustion chamber, the reinforcing member being disposed to be sandwiched between parts of the injector body in a radial direction of the injector body.

Systems, methods and devices for administering medication are disclosed. One or more embodiments of a medication delivery device may include a syringe, a needle, a guiding element, and a volume limiter for limiting the amount of medication that can be drawn from a vial. At least one method for administering medication using a medication delivery device, may include: inserting a vial into a guiding element, drawing back on a plunger, removing the guiding element and the vial from a needle to expose the needle, inserting the needle into a patient, depressing the plunger to inject the medication into the patient, and withdrawing the medication delivery device from the patient.

A medical injection device for supporting a medical container comprising a barrel and a needle tip extending from a distal end of the barrel, comprising: safety shield, first ring configured to be coupled to the medical container and configured to be biased in a proximal direction relative to the safety shield from an injection position in which a needle tip extends out of the safety shield to a safety position in which the needle tip is covered by the safety shield, and second ring rotatably movable relative to the first ring between locking position wherein the second ring maintains the first ring in the injection position and an unlocking position wherein the second ring releases the first ring thereby allowing the first ring to be urged into the safety position.

According to some embodiments, a syringe may include a barrel; a delivery conduit; a plunger seal disposed within the barrel; and a plunger rod assembly affixed to an end of the barrel, the plunger rod assembly including a first plunger rod component comprising a first linear gear, a second plunger rod component disposed at least partially in the barrel and engaged with the plunger seal, wherein the second plunger rod component comprises a second linear gear, a first rotational gear having a plurality of gear teeth for engaging the first linear gear, and a second rotational gear having a second plurality of gear teeth for engaging the second linear gear, wherein the first rotational gear is coupled to the second rotational gear such that translation of the first plunger rod component causes translation of the second plunger rod component.

An exchangeable cartridge for an injection device is disclosed. The cartridge (3) comprises a container (4) and a plunger (10) connectable with a plunger rod (9). The container receives the plunger rod from its rear end. The plunger comprises a rod connector (12) connectable with a front portion (13), and the rod connector has a base portion (24), an outer wall section (15), an inner wall section (16), and a rod stop portion (17) encircled by the inner wall section. The inner wall section comprises several tongues (22) protruding rearwards from the base portion and defining an entrance opening (18) for the plunger rod. The inner wall section receives a front portion (13) of the plunger rod through the entrance, and the tongues are provided with retaining portions arranged to retain the front end portion during retraction of the plunger rod within the housing.

A protective assembly includes a body for receiving the syringe; and a coupling device inside the body, rigidly connected to the barrel as regards to axial movement relative to the body. The coupling device includes an attaching element which can be either in an engaged state to axially fix the coupling device and the plunger rod, or in a release state in which the coupling device and the plunger rod are axially free relative to one another. The coupling device is axially movable in the body from a storage position to an injection position in which the needle extends beyond the body, and in which the attaching element can move towards the release state. The coupling device is axially movable in the body from the injection position towards a safety position, in which the needle is covered by the body.

A liquid preparation for application to an inner side of a hollow body to produce a sliding layer on a packaging for pharmaceuticals or cosmetic products comprises the following constituents: a reactive silicone system for forming a silicone network of the sliding layer, a catalyst for catalyzing the cross-linking reaction of the reactive silicone system, at least one unreactive silicone oil, and at least one diluent. The diluent comprises a silicon-containing compound and a content of the at least one diluent in the preparation amounts to more than 45 percent by weight and less than 95 percent by weight in the preparation.

An automatic injector dispenses a predetermined dose of medicament without a user having to manually force the needle into an injection site. The automatic injector includes a needle cover having a locked retracted position with respect to the injector housing prior to a medicament dispensing operation. The needle cover is operative to engage an injection site prior to a medicament dispensing operation.

A torque-limiting device comprises a plunger rod holder defining a piston cavity for receiving at least a portion of a plunger rod, a moveable stop element, a dowel disposed adjacent the stop element, a spring disposed adjacent the dowel, and a syringe barrel holder defining a barrel cavity for receiving at least a portion of a syringe barrel.

A lock adapter, a syringe assembly, and a prefilled syringe capable of suppressing variation in position on the tip end side of the lock adapter after being subjected to an autoclave sterilization process. The lock adapter is attached to the periphery of a nozzle portion at the tip end of the prefilled syringe and slidable in an axial direction of the nozzle portion. The lock adapter includes: a cylindrical body portion surrounding the periphery of the nozzle portion; and a claw portion protruding to an inner peripheral side from a base end portion of the cylindrical body portion and configured to determine a tip end position of the lock adapter by being caught in an annular rib extending in a circumferential direction of the nozzle portion, in which the claw portion has a circumferential shape when viewed from the axial direction and is integrally connected in the circumferential direction.