Abstract: An injection device adapted to the luer lock system and a syringe holder for making it is disclosed. The syringe holder for holding an inserted syringe, with a cap attached to the male luer at the tip, comprises a cylindrical barrel portion having an open distal end and an open proximal end, and a finger rest around the outer surface of the barrel portion at a position relatively closer to the proximal end, wherein a stopper means is provided at the inner surface of the barrel portion at the distal end thereof, the stopper means being designed to abut on the outer edge of the distal end of the syringe, and wherein a female-threaded sleeve extends forwardly from the distal end of the barrel portion, which is designed to surround the tip of the syringe and the cap, and wherein a proximal end cap is provided, at the proximal end of the barrel portion, which is designed to abut on the outer edge of the proximal end of the syringe, and has a bore to pass the piston rod through.

Abstract: A syringe device and a method of preparing medicine using the device capable of easily and accurately performing operations for mixing and dissolving a lyophilized product into a dissolution liquid before use. A double ended needle assembly and an intermediate holder are fitted to the first cylindrical part of a connection holder, a first syringe in which the dissolution liquid is stored is inserted into the first cylindrical part through the intermediate holder, and a second syringe in which the lyophilized product is stored in a depressurized state is fixedly inserted into the second cylindrical part of the connection holder. First, the intermediate holder is locked by a finger hooking projected piece, the first syringe is pushed into the intermediate holder in the locked state of the double ended needle assembly at an initial position by locking ribs, and the first syringe is unsealed by one end of the double ended needle.

Abstract: An injection device is disclosed which is designed to receive therein a two-compartment syringe, and to be used to mix the pharmaceutical agents and then conduct injections. The injection device comprises a cylindrical barrel portion so configured that the two-compartment syringe can be inserted therein in a rear-end first manner, a piston rod for pushing the slidable rear wall to advance, a front spring that is compressed, when the two-compartment syringe is inserted, and then push back the piston rod in the forward direction, and a sleeve which can be shifted back and forth and is provided by screw engagement with the outer surface of the rear part of the barrel portion to block the forward movement of the piston rod.

Abstract: A syringe device and a method of preparing medicine using the device capable of easily and accurately performing operations for mixing and dissolving a lyophilized product into a dissolution liquid before use. A double ended needle assembly and an intermediate holder are fitted to the first cylindrical part of a connection holder, a first syringe in which the dissolution liquid is stored is inserted into the first cylindrical part through the intermediate holder, and a second syringe in which the lyophilized product is stored in a depressurized state is fixedly inserted into the second cylindrical part of the connection holder. First, the intermediate holder is locked by a finger hooking projected piece, the first syringe is pushed into the intermediate holder in the locked state of the double ended needle assembly at an initial position by locking ribs, and the first syringe is unsealed by one end of the double ended needle.

Abstract: An injection device is disclosed which is designed to receive therein a two-compartment syringe, and to be used to mix the pharmaceutical agents and then conduct injections. The injection device comprises a cylindrical barrel portion so configured that the two-compartment syringe can be inserted therein in a rear-end first manner, a piston rod for pushing the slidable rear wall to advance, a front spring that is compressed, when the two-compartment syringe is inserted, and then push back the piston rod in the forward direction, and a sleeve which can be shifted back and forth and is provided by screw engagement with the outer surface of the rear part of the barrel portion to block the forward movement of the piston rod.

Abstract: An injection device adapted to the luer lock system and a syringe holder for making it is disclosed. The syringe holder for holding an inserted syringe, with a cap attached to the male luer at the tip, comprises a cylindrical barrel portion having an open distal end and an open proximal end, and a finger rest around the outer surface of the barrel portion at a position relatively closer to the proximal end, wherein a stopper means is provided at the inner surface of the barrel portion at the distal end thereof, the stopper means being designed to abut on the outer edge of the distal end of the syringe, and wherein a female-threaded sleeve extends forwardly from the distal end of the barrel portion, which is designed to surround the tip of the syringe and the cap, and wherein a proximal end cap is provided, at the proximal end of the barrel portion, which is designed to abut on the outer edge of the proximal end of the syringe, and has a bore to pass the piston rod through.

Abstract: A-syringe for storing a freeze-dried agent therein under reduced pressure as well as a method for manufacturing the syringe. A specified amount of a chemical is injected into a cartridge with the one end of the cartridge down. The gasket is plugged halfway on the other end side of the cartridge, so that the cartridge is made communicating between inside and outside by the recessed groove, in which state the chemical is freeze-dried. The sealing cap is overlaid on an upper end face of the gasket and the sealing cap is pushed in the reduced-pressure atmosphere so that the other end side of the cartridge is sealed by the gasket and the sealing cap. The sealing cap is engaged with an end face of the cartridge on the other end side, thereby being prevented from moving into the cartridge.