Thomas J Hartnett

Address:

33A Smith St, Greenlawn, NY 11740

VIN:

5FNRL38738B039566

Make:

HONDA

Model:

ODYSSEY

Year:

2008

US Patent:

47985909, Jan 17, 1989

Filed:

Nov 22, 1983

Appl. No.:

6/554617

Inventors:

William J. O'Leary - Huntington NY
Thomas J. Hartnett - Greenlawn NY
Richard G. Jones - Lebanon NJ

Assignee:

Medical Technology Products, Inc. - Huntington NY

International Classification:

A61M 500

US Classification:

604153

Abstract:

An intravenous infusion pumping system in which an independent and therefore disposable pump set cooperates with a rotor assembly block to produce a peristaltic action conveying a therapeutic solution drawn from a container into a patient. The pump set, which includes a flow line extending between the container and the patient, has a pump chamber interposed therein constituted by a precisely-dimensioned, flexible tube terminating in inlet and outlet connectors. The tube is looped in a block cavity to conform to an arcuate stator wall therein and is subjected to compression by a pair of diametrically-opposed rollers carried by the rotor, the rollers pressing the tube against the wall to occlude the tube and thereby trap the fluid therein. As the rotor turns, the points of occlusion are advanced to propel the fluid toward the outlet. To assure a pumping action in the proper direction, the inlet connector is provided with a flange having a predetermined size which is seated in a matching slot in an inlet socket in the block, the outlet connector having a flange of different size seated in a matching slot in an outlet socket, thereby precluding reversal of the pump chamber.