FLOW RESTRICTION MECHANISMS FOR DRUG DELIVERY PUMPS

摘要

A replaceable fluid restriction mechanism includes: an aperture residing adjacent to a fluid pathway connection and configured to permit flow of a drug fluid through the aperture when the fluid pathway connection is open; an entry point of a fluid channel configured such that the flow of drug fluid can travel through aperture to the entry point and through the fluid channel to an exit point; and an outlet aperture of a port through which the flow of drug fluid may travel after exiting the exit point, wherein a fluid conduit is connected to the fluid restriction mechanism at the outlet aperture. A configurable fluid restriction mechanism includes a plurality of fluid channels, selectable to align with the entry point and an exit point of the fluid restriction mechanism.