1
George Bowman, Grace Esche: Battery gauge for a battery operated infusion pump. Baxter International, P E Schaafsma, F C Kowalik, June 9, 1998: US05764034 (112 worldwide citation)

The present invention provides an estimate of the amount of time left on the battery by monitoring not only the voltage available from the battery, but also the amount of current flowing from the battery. It has been found that periodic sampling of the battery voltage and current drain enables accur ...


2
Robert L Anderson, Daniel C Colesworthy III, Warren P Heim, Larry Blankenship: Pump chamber back pressure dissipation apparatus and method. Baxter International, F C Kowalik, P E Schaafsma, T D Bratschun, August 19, 1997: US05658133 (104 worldwide citation)

A medical infusion pump (10) for delivering liquids to a patient includes an elastomeric pump chamber (140) contractable between a refill position and a discharge position. An inlet valve (122) is operatively associated with an elastomeric inlet (142) supplying liquid to the pump chamber (140). The ...


3
Josef Schmidt, James Ducay, Hugh Forman: Port assembly for a container. Baxter International, P E Schaafsma, R M Barrett, P C Flattery, January 9, 1990: US04892222 (45 worldwide citation)

A port assembly for a container is provided. The port assembly includes an elongated tube extending from an end of a base, the tube defining a tubular bore for receiving a member for accessing the container. The tubular bore includes a membrane for separating the tubular bore into a first portion an ...


4
Thomas A Fowles: Port and elastic closure. Baxter International, P E Schaafsma, R Barrett, P C Flattery, December 26, 1989: US04889256 (22 worldwide citation)

A port and closure assembly is provided. The closure includes a sleeve member and the port a rib member. The sleeve member having an inner circumference that is less than the outer circumference of the rib. The port and closure cooperating to produce an audible signal when the closure is removed fro ...


5
Geoffrey Hutchins, Tim Allen: Infusion pump monitoring encoder/decoder. Baxter International, P E Schaafsma, F C Kowalik, June 20, 2000: US06078273 (13 worldwide citation)

The present invention provides a method and apparatus for monitoring an infusion pump (10). The method and apparatus provides an encoder (101) which is used with a motor (65) of the infusion pump (10) and a monitoring method which effectively provides rotational directional information. The present ...