ADJUSTABLE FLOW SYRINGE

摘要

An adjustable flow syringe (10) is provided that comprises a slidable plunger (14) within a barrel (12). The barrel (12) has a flow discharge end (20) wherein a neck (28) is located. The neck (28) has a conduit (30) extending therethrough which has an outlet and a inlet such that the conduit (30) is in fluid communication with the barrel (12). The adjustable flow syringe (10) includes either a valve insert (46) or a porous insert (94, Fig. 6) in the conduit (30) which is configured to adjust the flow rate of a fluid leaving the syringe (10) such that a low amount of manually applied force delivers the fluid in drops. The valve insert (46) is formed from a resilient material and conforms to the contours of the conduit (30). The valve insert (46) has a portion that extends across the conduit outlet with an opening formed therethrough. The porous insert (94, Fig. 6) is formed from a porous material and is configured with a shape corresponding to the shape of the conduit (30) so that fluid passes through the conduit (30) primarily via the pores of the porous insert (94).