INFLATION DEVICE FOR DILATATION CATHETERS

摘要

INFLATION DEVICE FOR DILATATION CATHETERS The present invention is a fluid injecting device. It is comprised of an elongated housing having an inner bore and a piston slidably disposed therein. Attached to the piston is an elongated piston rod one end of which extends out of the housing. The rod has a threaded intermediate section which engages a plurality of opposed threaded members. With this construction longitudinal movement of the piston within the bore is effected by rotating the piston rod. The invention also includes means to move the opposed threaded members to a second position spaced away from the piston rod and disengaged therefrom. In this fashion longitudinal movement of the piston within the bore is effected by pushing or pulling on the piston rod.