Energy-saving, anti-free flow portable pump for use with standard PVC IV tubing

• US 7,059,840 B2
• Filed: 04/05/2002
• Issued: 06/13/2006
• Est. Priority Date: 04/05/2002
• Status: Expired due to Term

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Sigma International
• Inventors: Wollowitz, Michael H., Shvetsov, Yuriy, Hungerford, Roger L., Corwin, Kenneth J.
• Primary Examiner(s): Thorpe, Timothy S.
• Assistant Examiner(s): Sayoc, Emmanuel
• Application Number:
  US10/117,515
• Publication Number:
  US 20030190246A1
• Time in Patent Office: 1,530 Days
• Field of Search: 417/479, 417/778, 417/474, 417/477.3, 417/477.12, 604/153, 604118-151, 604285-28804, 604/890.1, 604/89.1, 604/892.1, 604/251, 222/153.13, 222/74, 222/75
• US Class Current: 417/477.3
• CPC Class Codes: F04B 43/082 the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism

Abstract

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.

Claims

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.