초록 ▼

An elastomeric bladder type infusion device for delivering a beneficial agent, such as a drug to a patient at substantially a constant rate. The device uniquely includes an adjustable flow rate control mechanism for adjusting the rate at which fluid flows from the device. In one form of the inventio

An elastomeric bladder type infusion device for delivering a beneficial agent, such as a drug to a patient at substantially a constant rate. The device uniquely includes an adjustable flow rate control mechanism for adjusting the rate at which fluid flows from the device. In one form of the invention, the apparatus also includes a novel flow indicator for visually indicating fluid flow from the device.

대표청구항 ▼

[ I claim:] [1.] A fluid delivery apparatus having a fluid delivery passageway, said apparatus comprising:(a) an elongated housing having walls defining an internal chamber;(b) a support assembly connected to said housing and including an elongated body disposed within said internal chamber, said bo

[ I claim:] [1.] A fluid delivery apparatus having a fluid delivery passageway, said apparatus comprising:(a) an elongated housing having walls defining an internal chamber;(b) a support assembly connected to said housing and including an elongated body disposed within said internal chamber, said body having an inlet passageway and an outlet passageway in communication with said fluid delivery passageway;(c) an elongated tubular shaped elastomeric member connected proximate its ends to said body, said elastomeric member having a central portion disposed within said internal chamber of said housing and overlaying said inlet and said outlet passageways, said central portion of said elastomeric member being distendable by fluid flowing through said inlet passageway from a first position in proximity with said support to a second position to form a fluid reservoir;(d) fill means interconnected with said support assembly for filling said fluid reservoir; and(e) flow rate control means carried by said housing for controlling the rate of fluid flow from said reservoir toward said fluid delivery passageway of said housing, said flow rate control means comprising a control member rotatably connected to said housing, said control member having first and second spaced apart flow restrictors, said control member being rotatable from a first position wherein said first flow restrictor is aligned with said delivery passageway and a second position wherein said second flow restrictor is aligned with said delivery passageway.