Syringe

Abstract: A front-loading syringe which comprises a movable plunger for injecting liquid contrast media, is rotatably mountable on a front wall of an injector housing with an interference fit and in sealed relationship with respect thereto, with or without a pressure jacket, by a first-quick release mechanism. At the same time, the plunger is connected to an injector drive mechanism by a second readily releasable mechanism. During the mounting operation, a sensor reads injection information from an indicator device on the syringe and feeds it to an injector control. An audible-and-tactile indicating mechanism also is activated when the syringe is essentially in the desired mounted position. The syringe may include reinforcing ribs which also function as volumetric gradations, and liquid media presence-or-absence indicating dots which appear circular against a liquid media background and oval-shaped against an air background. An injection end of the syringe comprises an injector portion of reduced diameter inside a screw-threaded attachment portion of larger diameter, and may include loop-shaped reinforcing handle portions.

Abstract: A safety syringe includes a barrel having an interior chamber for containing a fluid, and a needle mounted at one end of the barrel. The needle has a bore in fluid communication with the interior chamber in the barrel. A plunger is slidably mounted within the interior chamber of the barrel for displacing fluid within the barrel through the needle to administer fluid to a patient. A protective shield is slidably mounted on the barrel and is moveable between an extended position in which the needle is concealed and a retracted position in which the needle is exposed. The protective shield is moveable between first, second, and third positions. In the first position, the protective shield is extended over the needle and is releasibly locked to protect the needle prior to use. In the second position, the protective shield is retracted and is releasibly locked to facilitate use of the syringe. In the third position, the protective shield is again extended to cover the needle and is irreversibly locked to prevent reuse of the syringe. Reuse of the syringe is further prevented by a plunger locking mechanism which is engaged when the plunger is fully depressed.

Abstract: The present invention relates to a hypodermic syringe having the same general appearance as a pen which is specifically adapted to provide for multiple measured injections of materials such as insulin or human growth hormone.

Abstract: An infusion pump has a housing for receipt of a syringe, a motor to drive the plunger of the syringe to expel a medicant within the syringe, a computer for controlling the motor and a place to mount the syringe. A bar code reader is mounted adjacent the syringe and the syringe has a pharmacist-applied bar code that programs the computer with the data for the dispensing of the medicant.