A manual injector for skin more easily percutaneously injects into the body liquid nutritional components having skin moisturization, anti-inflammation, skin irritation alleviation, whitening, and anti-wrinkle effects; and a therapeutic agent or an immune activation agent, such as a vaccine, or a skin elasticity nutritional component for skin care. The injector includes: a housing in which liquid nutritional components are charged; a coupling casing mounted to the housing; an opening and closing valve coupled to an inlet hole by passing therethrough and configured to be moveable upward and downward; a bottom casing; a pumping unit having a pressing bar provided therein; a top casing in which a needle hole is formed; and a needle.

A medicament injection device including a needle, a first stage that controls positioning of the needle at a depth into an animal when the device is pressed against the animal, and a second stage that injects the medicament through the needle into the animal after the needle is positioned at the depth and the device is further pressed against the animal. The device preferably includes a mechanism that permits the second stage to inject the medicament only after the needle is positioned at the depth. The depth of the needle preferably is adjustable, as is the amount of the medicament injected. In preferred aspects, these two features are independently adjustable. One or more springs, pneumatics elements, or other elements may automatically reset the first stage, the second stage, or both after the device is withdrawn from the animal. Also, associated methods.

A needle assembly for medical or surgical use is disclosed, such as for hemodialysis. A representative needle assembly comprises an outer needle assembly and an integral needle tip protector. A representative outer needle assembly comprises: an outer needle comprising: a first lumen; a first aperture with a sharp needle tip at a first distal end of the outer needle; and a second aperture arranged opposite the first aperture. In another embodiment, the outer needle has a longitudinal slot and the integral needle tip protector includes a sliding connector which is slidable in the longitudinal slot. The integral needle tip protector is arranged within the first lumen and moveable between a retracted configuration and an extended configuration, and comprises: a needle tip cover arranged to shield the sharp needle tip in the extended configuration, the needle tip cover having a smooth or beveled distal surface forming a blunt tip.

The disclosure provides an aspiration syringe device and methods for use of such an aspiration syringe device. The aspiration syringe device includes an elongated housing, a plunger configured for axial sliding within the housing and being occludably received in the housing, a compression spring configured to urge the plunger away from the housing, and a retention mechanism configured to fixedly engage with the plunger so as to retain the plunger in position relative to the housing with the compression spring in an at least partially compressed state. The aspiration syringe device can be used in conjunction with another apparatus designed to penetrate a patient's body to access a distressed pleural space for the removal of air or fluid therefrom by allowing the air or fluid to flow in one direction from inside the body to outside the body.

The embodiments of the present disclosure provide booster mechanisms suitable for a liquid container. The booster mechanism may include a liquid storage assembly. A tail end of the liquid storage assembly may be provided with a strike space. The strike space may be provided with a movable assembly. The movable assembly may be capable of performing an axial movement along the strike space. The tail end of the movable assembly may be provided with a booster assembly and a deformation space. A front end of the booster assembly may be provided with a deformation trigger assembly. A deformation gap may be between the deformation space and the deformation trigger assembly.

A device and a method for adjustable quantitative injection of high-pressure gas are provided, wherein the gas may have a pressure of 5 MPa or more than 5 MPa. The gas may be directly communicated with a gas tank in the mechanism or an external gas source, flows through corresponding valves, and is charged into a predetermined or adjustable reservoir. Alternatively, the valve may be time-controllable, and does not need the reservoir. The gas is ejected through a nozzle selected based on depth or range of injection, wherein a one-way valve is disposed between the nozzle and the body to prevent contamination due to backflow. The manipulator can exert an appropriate force onto a target portion of a human for gas injection, and when the injection is done, a biasing member can automatically return the mechanism to its original state, ready for the next injection.

The present invention relates to an injection device for injecting a pharmaceutical liquid drug containing a preservative. The injection device comprises a housing (1) supporting a cartridge (20) having an interior chamber (21) holding the pharmaceutical preservative containing liquid drug to be injected, and a needle cannula (10) having a front part (11) and a back part (12), which back part (12) is adapted to be in liquid communication with the interior chamber (21) of the cartridge (20). The injection device is further provided with a telescopic needle covering shield (30) which distally is provided with a reservoir (31) which holds a liquid containing the same preservatives as in the pharmaceutical preservative containing liquid drug contained in the interior chamber of the cartridge.

The telescopic needle covering shield (30) is telescopic movable in relation to the needle cannula (10) by a first resilient member between a first position and a second position. In the first position, the tip (13) of the front part (11) of the needle cannula (10) is maintained inside the reservoir (31), and in the second position, the tip (13) of the front part (11) of the needle cannula (10) is located outside the reservoir (31) and distally to the reservoir (31). The tip (13) of the needle cannula (10) is thus cleaned by the preservatives in the reservoir (31) between subsequent injections.

A device (100) for delivering a medicament into a patient's body by injection into or through the patient's skin, including: a main body having a bottom enclosure (104) that has a top surface including a button guide latch (268); a reservoir (160) disposed within the main body for containing the medicament; an injection needle (152) for penetrating the skin of the patient, the needle (152) having a lumen and communicating with the reservoir (160) when the device (100) is activated; a pressurizing system (140, 144) for pressurizing the reservoir (160) when the device (100) is activated; and an activator button (128) movably disposed on the main body and movable from a pre-activated position to an activated position. The activator button (128) includes an activation arm (228). When the activator button (128) moves from the pre-activated position to the activated position, an end of the activation arm (228) engages with the button guide latch (268) and prevents return movement of the activator button (128).

The present invention relates to an injection device for injecting a pharmaceutical liquid drug containing a preservative. The injection device comprises a housing (1) supporting a cartridge (20) having an interior chamber (21) holding the pharmaceutical preservative containing liquid drug to be injected, and a needle cannula (10) having a front part (11) and a back part (12), which back part (12) is adapted to be in liquid communication with the interior chamber (21) of the cartridge (20). The injection device is further provided with a telescopic needle covering shield (30) which distally is provided with a reservoir (31) which holds a liquid containing the same preservatives as in the pharmaceutical preservative containing liquid drug contained in the interior chamber of the cartridge. The telescopic needle covering shield (30) is telescopic movable in relation to the needle cannula (10) by a first resilient member between a first position and a second position. In the first position, the tip (13) of the front part (11) of the needle cannula (10) is maintained inside the reservoir (31), and in the second position, the tip (13) of the front part (11) of the needle cannula (10) is located outside the reservoir (31) and distally to the reservoir (31). The tip (13) of the needle cannula (10) is thus cleaned by the preservatives in the reservoir (31) between subsequent injections.

An injection device includes a housing with an inspection window and at least two springs. One of the at least two springs is a driving helical spring. A spring block is connected to the housing and secured against rotation relative to the housing. A coupling tube extends above the spring block and above the housing. The injection device includes a plunger at least partially surrounded by the coupling tube. The driving helical spring is connected to the spring block. The coupling tube is at least partially surrounded by the driving helical spring. At least a portion of the proximal end of the plunger is narrower than a first internal diameter of the coupling tube and wider than a second internal diameter of the coupling tube. The rotatable dose knob, the spring block, the coupling tube, the plunger, and the driving helical spring are arranged coaxially.