Patent ID: 7192416
Filing Date: 2007-03-20
Classification: A61M

Abstract:
1. A fluid injection apparatus, comprising: a syringe comprising a cylindrical body with a distal end and a proximal end, the body having an injection section at the distal end and at least one outward extending retaining flange at the proximal end; an injector comprising an injector housing defining an opening and an injector drive piston extendable through the opening for imparting motive forces to a syringe plunger disposed within the syringe; and a pressure jacket associated with the injector for securing the syringe during an injection procedure, the pressure jacket having a cylindrical shape comprising a distal end and a proximal end, the pressure jacket defining a syringe receiving opening for receiving the syringe into the pressure jacket to encompass a substantial portion of the syringe to restrain outward expansion of the syringe during an injection procedure, the pressure jacket having a wall defining a longitudinally extending groove in an inner surface thereof configured to receive the at least one retaining flange of the syringe, the groove cooperating with a transversely extending slot defined in the inner surface of the pressure jacket wall, wherein to insert the syringe into the pressure jacket the at least one retaining flange is received in the groove, which guides the syringe into the pressure jacket until the at least one retaining flange reaches the transversely extending slot, and wherein rotational movement of the syringe causes the retaining flange to engage the slot, thereby substantially preventing the syringe from moving distally forward within the pressure jacket.