초록 ▼

A fluid flow rate switching device providing a plurality of precise user selectable flow rates. Generally, the device includes a housing having a port and a plurality of passages. Respectively disposed in each of the passages is a rigid capillary tube for regulating the flow rate of a therapeutic fl

A fluid flow rate switching device providing a plurality of precise user selectable flow rates. Generally, the device includes a housing having a port and a plurality of passages. Respectively disposed in each of the passages is a rigid capillary tube for regulating the flow rate of a therapeutic fluid through the passages. Further, a valve is rotatably connected to the housing for operably connecting and disconnecting the port from one or more of the passages.

대표청구항 ▼

[ What is claimed is:] [1.]1. A switch for selecting a flow rate of a therapeutic fluid comprising:a housing having a port and a plurality of passages;a plurality of rigid capillary tubes that regulate the flow rate of the therapeutic fluid, each of the tubes respectively disposed in one of the pass

[ What is claimed is:] [1.]1. A switch for selecting a flow rate of a therapeutic fluid comprising:a housing having a port and a plurality of passages;a plurality of rigid capillary tubes that regulate the flow rate of the therapeutic fluid, each of the tubes respectively disposed in one of the passages; and,a valve operably connected to the housing, the valve moveable to selectively connect and disconnect the port from one or more of the passages and having a flange attached to a hub member, the flange having an outer perimeter and said housing having an aperture and an annular ridge in coaxial alignment with the aperture, the aperture receiving the hub of the valve and the ridge surrounding a substantial portion of the flange outer perimeter.