Abstract: A needle assembly (14), for use with a syringe (3) and a medicine cartridge (12); has a molded body (14B). A needle (14A) is housed in, affixed to, and reinforced by the molded body (14B). The needle (14A) has a single tube which includes a tip (311), and a tip-ward needle (31) extending ring-ward from said tip into the molded body (14B). The tip-ward needle becomes a cartridge needle (531) within the molded body (14B). The cartridge needle (531) extends tip-ward from the molded body (14B). The molded body (14B), is molded as a single structure, and includes: a domed cylinder (248), at the molded body (14B)'s tip-ward end; a flange (22) ringward of the molded body (14B); and fins (251). The fins are molded radially from the domed cylinder (248). The fins are vertically molded from the flange (22); and reinforce the fins to the flange. A second cylinder (244), is extended ringward from the flange (22). A conical portion (15) is molded ringward from the second cylinder (244).

Abstract: A cartridge syringe system includes a syringe (5). The syringe has a tip-ward direction and a ring-ward direction. The syringe (5) has a syringe body (9) and an actuator ring (7). A shaft (10) slidably mounts the actuator ring (7) to the syringe body (9), with a harpoon (11) at a tip-ward end of the shaft (10). The syringe body (9) has a spiral mount external to the syringe body (9) for removably mounting a sheath (20) to the syringe body (9), on a cooperating internal spiral sheath mount. The syringe body (9) and the sheath have similar openings. The sheath opening can be rotated to coincide with the syringe body opening, for inserting a needle assembly into the syringe body, or for removing the needle assembly. The sheath opening can be rotated to obstruct the syringe body opening, for retaining the needle assembly in the syringe body.

Abstract: A cartridge syringe system includes a syringe (5). The syringe has a tip-ward direction and a ring-ward direction. The syringe (5) has a syringe body (9) and an actuator ring (7). A shaft (10) slidably mounts the actuator ring (7) to the syringe body (9), with a harpoon (11) at a tip-ward end of the shaft (10). The syringe body (9) has a spiral mount external to the syringe body (9) for removably mounting a sheath (20) to the syringe body (9), on a cooperating internal spiral sheath mount. The syringe body (9) and the sheath have similar openings. The sheath opening can be rotated to coincide with the syringe body opening, for inserting a needle assembly into the syringe body, or for removing the needle assembly. The sheath opening can be rotated to obstruct the syringe body opening, for retaining the needle assembly in the syringe body.

Abstract: A needle assembly (14), for use with a syringe (3) and a medicine cartridge (12); has a molded body (14B). A needle (14A) is housed in, affixed to, and reinforced by the molded body (14B). The needle (14A) has a single tube which includes a tip (311), and a tip-ward needle (31) extending ring-ward from said tip into the molded body (14B). The tip-ward needle becomes a cartridge needle (531) within the molded body (14B). The cartridge needle (531) extends tip-ward from the molded body (14B). The molded body (14B), is molded as a single structure, and includes: a domed cylinder (248), at the molded body (14B)'s tip-ward end; a flange (22) ringward of the molded body (14B); and fins (251). The fins are molded radially from the domed cylinder (248). The fins are vertically molded from the flange (22); and reinforce the fins to the flange. A second cylinder (244), is extended ringward from the flange (22). A conical portion (15) is molded ringward from the second cylinder (244).

Abstract: A syringe, for injecting anesthetic contained in a medicine vial. The syringe includes a housing having a needle end and a plunger end, connected by a body; to which housing is attached a plunger assembly having a plunger at the plunger end. There is a vial slot in the housing, cooperatively sized for receiving a medicine vial. A needle assembly slot is in the body, at the needle end, for receiving a needle assembly from a side of the body. A seat at the needle end of the housing receives and locates a corresponding seat portion of the needle assembly within the housing. Depressing the plunger housingward impales the vial onto a penetrator of the needle assembly and seats the assembly firmly.

Abstract: A syringe, for injecting anesthetic contained in a medicine vial. The syringe includes a housing having a needle end and a plunger end, connected by a body; to which housing is attached a plunger assembly having a plunger at the plunger end. There is a vial slot in the housing, cooperatively sized for receiving a medicine vial. A needle assembly slot is in the body, at the needle end, for receiving a needle assembly from a side of the body. A seat at the needle end of the housing receives and locates a corresponding seat portion of the needle assembly within the housing. Depressing the plunger housingward impales the vial onto a penetrator of the needle assembly and seats the assembly firmly.