DISPOSITIVO ENERGIZADO, MANUAL Y PORTATIL

Se provee un dispositivo de inyección energizado manual para inyectar un líquido, con medio de contraste, en sistema vascular de un mamífero. El dispositivo comprende un estuche en forma de pistola que incluye un motor DC activado a pilas para permitir la entrega uniforme de líquido de una jeringa. A hand-held power assister device is provided for injecting liquid, such as contrast media, into the vascular system of a mammal at a controlled rate from a syringe. The device comprises a pistol-shaped casing (10), a syringe (12) having a slideable piston (48) therein removably coupled to the casing (10) and drive means, (22,30,24,26) contained in the casing, for driving the piston in the syringe to deliver the liquid to the patient. The drive means preferably comprises a battery-powered motor (22) to generate angular rotation and a lead screw (30) rotatably coupled with the motor by gear means (24,26) to convert the angular rotation to linear motion, the screw (30) having at one end a female coupling means (38) for engaging with a male coupling means (46) on the piston (48). The use of the piston for the angiographic or urographic examination of a mammal is described.