Baxter Travenol Laboratories, Inc.

Baxter International Inc.

Stanley J Pernic

T Michael Dennehey

James R Hitchcock

Daniel B Granzow

Arthur L Lueders

Rene G Lamadrid

Joseph C West, Jr

Alan A Figler

Ralph L Davis

John J Selman, Iii

David M Bergemann

Francis D Buckley

A centrifugal processing system for cultured cellular suspensions comprises a reservoir for pooling a desired volume of the cellular suspension from a plurality of individual containers in which the cellular suspension have been cultured. A centrifugation chamber is provided operative in response to centrifugal force for separating the cellular suspension into a cellular component and a supernatant. Fluid is conveyed from the reservoir into the centrifugation chamber at a high flow rate exceeding 1 liter per minute. The cellular component and supernatant are collected from the centrifugation chamber.

High volume centrifugal fluid processing system and method for cultured

A heater-scale having a curved supporting member upon which a bag of fluid to be heated can be placed, has a distributed two-dimensional heating element affixed to a lower surface thereof. The curved member is supported by a load cell for generating an electrical signal proportional to the weight of the bag on the heater member, a thermistor is in contact with the fluid whose temperature is to be maintained, a thermistor is affixed to the heater member, and a control system senses the weight and temperature of the bag of fluid as well as the temperature of the heater member for the purpose of nonlinearly adjusting the electrical current supplied to the heater element as fluid is removed from or variable temperature fluid is added to the bag so as to maintain the bag at a predetermined temperature.

Heater-scale for heating fluids for injection into a patient

An automatic cycler for performing Continuous Cycling Peritoneal Dialysis (CCPD) and Intermittent Peritoneal Dialysis (IPD) is provided. The apparatus of the present invention is a safe and convenient cycler apparatus for performing peritoneal dialysis in either home or clinical environment. The apparatus provides a stable base by storing dialysate at a relatively low position. Tubing administration set length is reduced to a minimum by the use of individual, separated valves and by the elimination of redundant, duplicate tube sections. Administration set complexity is reduced by the use of a conventional design dialysate container for heating and weighing of an infusing dialysate dosage. The apparatus allows for gravity feed to a patient with an optional capability of adjusting the pressure head for the gravity feed.

Peritoneal dialysis apparatus

A supplementary degassing system is disclosed herein for use with a bedside console of the type employed in a central delivery system in the event additional degassing is necessary. The system may also be incorporated in a dialysis machine as the main degassing system. The system includes a chamber for receiving a liquid to be degassed. The chamber includes: a liquid inlet; a gas outlet through which gas is withdrawn; a degassed liquid outlet from which degassed liquid is drawn; and a recirculation inlet for receiving at least recirculated liquid. A recirculation loop is also provided for recirculating and treating liquid from the chamber. The loop includes a variable-restriction assembly for regulating pressures and enhancing degassing. The variable-restriction assembly includes a variable restriction comprising an orifice and valve for adjustably controlling liquid flow through the orifice. A pressure sensor is also provided for (1) sensing the pressure of the liquid flowing to the variable-restriction assembly and (2) controlling the flow through the variable restriction in relation to the pressure. When used in combination with the bedside console, the gas outlet is connected to the bedside console's effluent pump and at least a portion of the liquid from the outlet of the chamber is directed to the liquid inlet for the console.

Degassing system

There is disclosed herein a deairing system for use in a bedside-console-type dialysis machine. The system includes a selectively adjustable flow controller, a deairing tank, and a suction pump for drawing dialysis solution from the flow controller through the deairing tank and to the pump. The pump is also connected to the deairing tank for applying a negative pressure and for removing gas from the dialysis solution.

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Round Lake, IL, United States of America

Stanley J Pernic