1
Paul R Prince, Ronald L Clark: Blood extraction and reinfusion flow control system and method. Hemascience Laboratories, Bogucki Scherlacher Mok & Roth, April 14, 1987: US04657529 (148 worldwide citation)

A blood extraction and reinfusion flow control system includes a blood pump coupled to pump intravenous fluid to or from a subject, a pressure sensor coupled to sense extra veinous pressure at the subject, and a microprocessor based flow control subsystem. The flow control subsystem optimizes the fl ...


2
Donald W Schoendorfer, Lee E Hansen: Plasmapheresis system and method. Hemascience Laboratories, Bogucki Scherlacher Mok & Roth, December 15, 1987: US04713176 (73 worldwide citation)

A reliable flow rate plasmapheresis system includes a rotating enhanced vortex of membrane filter coupled to receive a flow of anticoagulated whole blood and separate concentrate and filtrate in response thereto. An anticoagulant pump is coupled to mix controlled amounts of anticoagulant with the in ...


3
Warren P Williamson IV, Paul R Prince: Method and apparatus for purging tubing network of blood processing system. HemaScience Laboratories, Nixon & Vanderhye, December 19, 1989: US04888004 (22 worldwide citation)

Method and apparatus for purging air from a tubing network finds particular utility as a component part of a blood constituent processing system. Collection and return needles of a disposable tubing network are initially contained within a common antiseptic enclosure. A purge fluid (e.g., saline sol ...


4
Donald W Schoendorfer, Warren P Williamson IV: Pivot pin bearing for biomedical systems. Hemascience Laboratories, Bogucki Scherlacher Mok & Roth, June 23, 1987: US04675106 (15 worldwide citation)

In a disposable biomedical system for processing fluids in a closed environment such as a plasmapheresis system, comprising a plastic rotor mounted for rotation on a pivot pin bearing and a seal, particularly a silicone lubricated O-ring seal, between the rotor and pin, the improvement wherein said ...


5
Prince Paul Richard, Clark Ronald Leigh, Schoendorfer Donald Walter, Ford Michael Gregory: Systeme et methode de debimetrie dun concentre de filtration adaptatif, Adaptive filter concentrate flow control system and method. Hemascience Laboratories, SMART & BIGGAR, May 29, 1990: CA1269621

Abstract of the DisclosureAn adaptive filter concentrate flow control systemincludes a filter system, a pumping system driving feed fluid,concentrate and filtrate flowing through the filter systemand a flow control system controlling the pumping system tomaintain optimum filtrate flow rates along a ...


6
Prince Paul R, Clark Ronald L: Systeme et methode pour le controle du debit pendant le prelevement et la retransfusion du sang, Blood extraction and reinfusion flow control system and method. Hemascience Laboratories, SMART & BIGGAR, April 12, 1988: CA1235211

Abstract of the Disclosure A blood extraction and reinfusion flow controlsystem includes a blood pump coupled to pump intravenous fluidto or from a subject, a pressure sensor coupled to sense extraveinous pressure at the subject, and a microprocessor basedflow control subsystem. The flow control sub ...


7
Prince Paul R: Method and apparatus for estimating hematocrit in a blood constituent processing system. Hemascience Laboratories, PRICE Bradford R L, April 21, 1988: WO/1988/002864

During an initial priming procedure, the blood draw/return needle(s) (10, 12) fluid flow system is primed with a nonblood fluid (e.g. a saline solution) (54) having known fluid viscosity. The pressure drop occurring across the needle orifice(s) is determined at a known flow rate for this predetermin ...


8
Prince Paul Richard, Ford Michael Gregory, Schoendorfer Donald Walter, Clark Ronald Leigh: Adaptive filter concentrate flow control system and method. Hemascience Laboratories, ROTH Gregory L, May 22, 1986: WO/1986/002858

An adaptive filter concentrate flow control system (10) includes a filter system (12), a pumping system (14) driving feed fluid, concentrate and filtrate flowing through the filter system (12) and a flow control system (18) controlling the pumping system (14) to maintain optimum filtrate flow rates ...


9
Schoendorfer Donald Walter, Mclaughlin William Francis: Closed hemapheresis system and method. Hemascience Laboratories, Mclaughlin William Francis, ROTH Gregory L, March 13, 1986: WO/1986/001426

A hemapheresis system and method comprises a stationary closed housing (12) concentric about a central axis and a feed system that moves blood upwardly from the housing lower end toward an outlet (30) port adjacent a substantially closed upper end. Within the stationary housing (12) is a double wall ...


10
Prince Paul Richard, Clark Ronald Leigh: Blood extraction and reinfusion flow control system and method. Hemascience Laboratories, ROTH Gregory L, January 16, 1986: WO/1986/000231

A blood extraction and reinfusion flow control system (10) includes a blood pump (26) coupled to pump intravenous fluid to or from a subject, a pressure sensor (24) coupled to sense extravenous pressure at the subject, and a microprocessor (102) based flow control subsystem. The flow control subsyst ...