Hospira, Inc.

Benjamin T Mullin

Marwan A Fathallah

Lori E Lucke

Robert P Cousineau

Mansour A Saleki

Robert R Boyd

Kent D Abrahamson

Howard L Greene

Eric R Navin

David T Wang

Michael W Lawless

Brian A Kidd

Peter J Scaramuzzi

A medical pump with an improved continuity low flow delivery system and method for use with a pumping chamber, for example in a cassette, is disclosed. The pump includes a pump drive for exerting a force on the pumping chamber and a sensor for sensing the force/pressure exerted by the pump drive on the pumping chamber. The pump drive position sensor senses the position of the pump drive. The medical pump also includes a processing unit and a memory having a programming code adapted to calculate the rate of change of the sensed force/pressure values and determine whether the rate of change of the sensed force/pressure values meets a rate of change threshold. Once the rate of change threshold is met, the programming code is adapted to calculate a remaining pump drive travel value for determining how much farther the pump drive should travel before the end of an effective pump cycle. The programming code is further adapted to trigger one or more signals to drive the pump drive for the remainder of the effective pump cycle using the remaining pump drive travel value.

System and method for improved low flow medical pump delivery

Growing community of inventors

Lino Lakes, MN, United States of America

Benjamin T Mullin