초록 ▼

A modular infusion pump system utilizes a positive displacement pump for pumping a known quantity of fluid for each stroke. A plurality of longitudinally spaced apart fixed combs cooperate with a resilient tube to define a known pumping volume. A plurality of movable combs are interdigitated with th

A modular infusion pump system utilizes a positive displacement pump for pumping a known quantity of fluid for each stroke. A plurality of longitudinally spaced apart fixed combs cooperate with a resilient tube to define a known pumping volume. A plurality of movable combs are interdigitated with the fixed combs and are periodically linearly directed to cause the pump volume to be compressed, and therefore the fluid expelled. A rotary to linear drive system is connected with the movable combs and a ratchet system prevents counterrotation when the motor is in the off position. Valves are disposed above and below the pumping unit to appropriately seal off the pumping volume. The valves and the movable combs are operated by means of cams carried by a common shaft.

대표청구항 ▼

An administration set for an infusion system, comprising: (a) a longitudianlly extending body comprised of an elastomeric material; (b) said body including a first substantially nondeformable portion of substantial thickness having an arcuate first surface of substantially constant radius extending

An administration set for an infusion system, comprising: (a) a longitudianlly extending body comprised of an elastomeric material; (b) said body including a first substantially nondeformable portion of substantial thickness having an arcuate first surface of substantially constant radius extending between opposite terminal ends and said first portion for providing strength and support during compression of said body; (c) said body further including a second relatively thin deformable portion extending in uninterrupted manner from said terminal ends, said second portion being arcuate and of substantially constant radius and the mirror image of said first surface; (d) said first surface and said second position forming a substantially elliptical fluid conduit when said second portion is in the non-deformed state. (e) a drip chamber extends from a first end of said body and is integral therewith and has an end element; (f) valve means are disposed between said drip chamber and said fluid conduit for regulating the flow of fluid therebetween; (g) a fluid orifice is disposed in said end element and includes means for connection with a fluid source, said orifice having at least a coating of a non-wetting material for controlling the size of the fluid drops exiting said orifice; and, (h) a vent communicates with said drip chamber.