1
Michael W Lawless, Peter A Soberon, Ashok Kaul, Steven E Minick, Gregory G Hoerner, Robert A Hermann, Stephen J Kreinick: Disposable fluid infusion pumping cassette having an interrelated flow control and pressure monitoring arrangement. Abbott Laboratories, Neal D Marcus, October 6, 1998: US05816779 (145 worldwide citation)

A disposable pumping cassette having an integral auxiliary flow control and pressure monitoring member is used for delivering a medicinal fluid to a patient. The pumping cassette includes an elastomeric member mounted in a rigid body having an inlet and an outlet. An inlet valve and an outlet valve ...


2
Michael W Lawless, Ashok Kaul, Gregory G Hoerner: Interface module for use with an NCT-based pumping mechanism and NCT-based cassette. Abbott Laboratories, Neal D Marcus, February 17, 1998: US05718562 (132 worldwide citation)

A modular ambulatory infusion pump comprises a base unit including an integral housing, said base unit including an infusion pump for infusing fluid into a patient's body, a battery power supply for energizing infusion pump and a control for operating the infusion pump to achieve at least one of a d ...


3
Vernon R Natwick, Michael W Lawless, Joseph E Doll, Chung You C Wu: Detecting occlusion of proximal or distal lines of an IV pump. Abbott Laboratories, Christensen O Connor Johnson & Kindness, May 26, 1992: US05116203 (110 worldwide citation)

A method and apparatus for detecting proximal and distal occlusions of flexible tubing in a positive displacement pump. A volumetric pump (30) includes a motor (146) that rotatably drives a cam assembly (142). The rotating cam assembly actuates a plunger (48), causing it to compress a pumping portio ...


4
Michael W Lawless, Peter A Soberon, Ashok Kaul, Steven E Minick, Gregory G Hoerner, Robert A Hermann, Stephen J Kreinick: Method of delivering liquid to a patient via a disposable pumping cassette having a flow control & pressure monitoring member. Abbott Laboratories, Brian R Woodworth, December 24, 1996: US05586868 (96 worldwide citation)

A disposable pumping cassette having an integral auxiliary flow control and pressure monitoring member is used for delivering a medicinal fluid to a patient. The pumping cassette includes an elastomeric member mounted in a rigid body having an inlet and an outlet. An inlet valve and an outlet valve ...


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Martin A Cole, Michael W Lawless, Christopher D Lynch, Frank S C Mo, Peter A Soberon: Air bubble sensor. Abbott Laboratories, Neal D Marcus, November 7, 2000: US06142008 (70 worldwide citation)

A system and a method for detecting the presence of air bubbles in an intravenous (IV) line supplying a medicinal liquid to a patient. An air bubble sensor includes an ultrasonic transmitter acoustically coupled to an ultrasonic receiver to detect the presence of a gas (e.g., air) in a portion of a ...


7
Vernon R Natwick, Michael W Lawless: Sensor for detecting fluid flow from a positive displacement pump. Abbott Laboratories, Christensen O Connor Johnson & Kindness, August 13, 1991: US05039279 (69 worldwide citation)

A flow detector for use in a volumetric pump to determine if fluid is being displaced by the pump. The volumetric pump (30) includes an inlet cracking valve (46) and an outlet cracking valve (52) disposed on opposite sides of a plunger (48) used to displace fluid by compressing flexible tubing (34). ...


8
Michael W Lawless, Walter L Jimison, Giovanni Pastrone, Anthony C Yung: Apparatus and method to test for valve leakage in a pump assembly. Abbott Laboratories, Christensen O Connor Johnson & Kindness, March 19, 1991: US05000664 (68 worldwide citation)

Apparatus and method for determining leakage, particularly of valves, in a pumping cassette. A cassette (70) includes a primary valve (34) and a secondary valve (36), which may be selectively activated to control the source of fluid input to the cassette. The cassette also includes an inlet valve (4 ...


9
Robert A Hermann, Michael W Lawless, Peter A Soberon: Infusion pump extruded metal housing with elastomeric end caps. Abbott Laboratories, Beth A Vrioni, October 23, 2001: US06305908 (66 worldwide citation)

A housing for a medicinal pump, which is sealed to prevent damage due to exposure of the housing to water or other liquids. The housing includes an extruded case in which the various components comprising the pump are enclosed. The ends of the extruded case are sealed by a top cap and a bottom cap t ...


10
Vernon R Natwick, Michael W Lawless: Volumetric pump with spring-biased cracking valves. Abbott Laboratories, Christensen O Connor Johnson & Kindness, October 8, 1991: US05055001 (58 worldwide citation)

A volumetric pump and method for displacing a predetermined quantity of fluid at a predefined cracking pressure, independent of supply and output pressures. The volumetric pump (30) includes an inlet cracking valve (46), an outlet cracking valve (52), and a plunger (48) for displacing fluid from a p ...