Energy-saving, anti-free flow portable pump for use with standard PVC IV tubing
An apparatus for pumping fluid through tubing comprising a stop platen is disclosed. The stop platen is operatively arranged to depress a wall of the tubing along a section of a longitudinal axis of the tubing. The stop platen is narrower than the tubing along a transverse axis of the tubing. The invention further comprises a cabinet containing the stop platen, a door rotatably fixed to the cabinet, and locking means for preventing rotation of the door. The locking means are operatively arranged to be unlocked by a tubing occluder.
1. An infusion pump comprising:
a tubing base for said infusion pump having a continuous tubing support surface;
a stop platen, for said infusion pump, said stop platen operatively arranged to depress a wall of said tubing along a section of a longitudinal axis of said tubing to induce pumping, wherein said tubing is closed to the atmosphere and has a normally circular cross-section and a wall of uniform thickness, said stop platen is narrower than said tubing along a transverse axis, measured with said tubing uncompressed, wherein said stop platen being sufficiently narrow so that pressing said stop platen against said tubing will not completely occlude said tubing;
first and second occlusion platens; and,
actuation means for moving said stop platen to depress said wall of said tubing.
2. The apparatus recited in claim 1 wherein said stop platen is centered with respect to said tubing along said transverse axis of said tubing.
3. The apparatus recited in claim 1 wherein said actuation means comprises a cam fixedly located on a camshaft, said camshaft operatively arranged to be rotated by a motor.
4. The apparatus recited in claim 1 further comprising means to constrain said tubing to remain proximate said stop platen.
5. The apparatus recited in claim 4 wherein said constraining means comprises:
a cabinet containing said stop platen;
a door rotatably fixed to said cabinet; and,
locking means for preventing rotation of said door.
6. The apparatus recited in claim 5 wherein said locking means comprises a latch, said latch operatively arranged to be unlatched by a tubing occluder.
7. The apparatus recited in claim 6 wherein said latch is operatively arranged to be unlatched by a first end of said tubing occluder, wherein said tubing occluder is operatively arranged to occlude said tubing when said tubing is located proximate a second end of said tubing occluder.
8. An apparatus for preventing the free flow of fluid in tubing installed in a pump comprising:
a cabinet containing said pump;
a door rotatably fixed to said cabinet; and,
locking means for preventing rotation of said door, said means operatively arranged to prevent rotation of said door responsive to a position of a tubing occluder.
9. The apparatus recited in claim 8 wherein said locking means comprises a latch, said latch operatively arranged to be unlatched by a first end of said tubing occluder, wherein said tubing occluder is operatively arranged to occlude said tubing when said tubing is located proximate a second end of said tubing occluder.