Robert T Cantu

US Patent:

6466879, Oct 15, 2002

Filed:

Jul 13, 2000

Appl. No.:

09/615390

Inventors:

Robert J Cantu - Lake in the Hills IL
Russel Stinoff - Alrlington Heights IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

G06F 1700

US Classification:

702 50, 702173, 702 55, 210782

Abstract:

Fluid processing systems and methods make use of a replenishable source containing a volume of a processing fluid that is dispensed during a processing period. A processor serves to sequentially pause and resume the processing period. The processor records weight values of the source at commencement of the processing period; upon pauses in the processing period; and upon resumptions of the processing period. At termination of the processing period, the processor generates a total volume value of processing fluid dispensed from the source during the processing period, which takes into account replenishment of the processing fluid when the processing period is paused. The systems and methods can be integrated into blood processing circuits to monitor the introduction of anticoagulant.

US Patent:

6582349, Jun 24, 2003

Filed:

Sep 26, 2000

Appl. No.:

09/669752

Inventors:

Robert J Cantu - Algonquin IL
Kyungyoon Min - Gurnee IL
Douglas W Reitz - Green Oaks IL
Robert I Brown - Northbrook IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

B04D 1100

US Classification:

494 1, 210 85, 210 86, 210 94, 210 97, 210109, 210143, 2104161, 494 2, 494 3, 494 5, 494 10, 494 23, 494 27, 494 43, 494 45

Abstract:

Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.

US Patent:

20030211927, Nov 13, 2003

Filed:

Jun 16, 2003

Appl. No.:

10/462320

Inventors:

Robert Cantu - Algonquin IL, US
Kyungyoon Min - Gurnee IL, US
Douglas Reitz - Green Oaks IL, US
Richard Brown - Northbrook IL, US

Assignee:

Baxter International Inc.

International Classification:

B04B011/04
B04B013/00

US Classification:

494/003000, 494/001000, 494/002000, 494/005000, 494/010000, 494/045000

Abstract:

Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.

US Patent:

60274417, Feb 22, 2000

Filed:

Jul 1, 1997

Appl. No.:

8/886179

Inventors:

Robert J Cantu - Lake In The Hills IL
Kyungyoon Min - Gurnee IL
Douglas W Reitz - Green Oaks IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

B04B 1100
B04B 1104

US Classification:

494 37

Abstract:

Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.

US Patent:

59618426, Oct 5, 1999

Filed:

Jul 1, 1997

Appl. No.:

8/886350

Inventors:

Kyungyoon Min - Gurnee IL
Richard I Brown - Northbrook IL
Robert J Cantu - Lake In The Hills IL
Daniel F Bischof - McHenry IL
William H Cork - Lake Bluff IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

B01D 2126

US Classification:

210745

Abstract:

Blood separation systems and methods employ a rotating chamber. The chamber includes an inlet region where whole blood enters for centrifugal separation into packed red blood cells, a plasma constituent, and an interface carrying mononuclear cells between the packed red blood cells and the plasma constituent. The packed red blood cells in the chamber have a hematocrit value H. sub. PRBC. A controller operates in a first mode to convey whole blood into the inlet region while removing packed red blood cells and the plasma constituent from the chamber and while maintaining the interface within the chamber. The controller also operates in the first mode to maintain a set H. sub. PRBC by conveying packed red blood cells into the inlet region.

US Patent:

60276576, Feb 22, 2000

Filed:

Jul 1, 1997

Appl. No.:

8/886732

Inventors:

Kyungyoon Min - Gurnee IL
Richard I Brown - Northbrook IL
Robert J Cantu - Lake In The Hills IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

B01D 2126

US Classification:

210782

Abstract:

Systems and methods rotate a chamber, in which whole blood is centrifugally separated into packed red blood cells, a plasma constituent, and an interface between the packed red blood cells and the plasma constituent. The interface carries platelets and mononuclear cells. The systems and methods include an interface control unit. The interface control unit is operative in a first state to enable removal of platelet-poor plasma in a first container for use as a diluting liquid. In a second state, the interface control unit retains mononuclear cells in the chamber, while removing platelet-rich plasma from the chamber, bypassing the platelet-poor collection container, thereby maintaining its platelet-poor character. In a third state, the interface control unit enables the removal of mononuclear cells from the chamber in a path that leads to a second container, where the mononuclear cells are collected. The systems and methods direct platelet-poor plasma from the first container to the second container to dilute the removed mononuclear cells in the second container.

US Patent:

59807601, Nov 9, 1999

Filed:

Jul 1, 1997

Appl. No.:

8/886780

Inventors:

Kyungyoon Min - Gurnee IL
Richard I Brown - Northbrook IL
Daniel F Bischof - McHenry IL
William H Cork - Lake Bluff IL
Robert J Cantu - Lake In The Hills IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

B01D 2126

US Classification:

210782

Abstract:

A blood separation system operates in a first mode to convey whole blood into the inlet region of a blood processing chamber for centrifugal separation into packed red blood cells, a plasma constituent, and an interface, which carries mononuclear cells, between the packed red blood cells and the plasma constituent. The system removes packed red blood cells and the plasma constituent from the chamber, while maintaining the interface within the chamber. The system operates in a second mode to remove the interface from the chamber by conveying packed red blood cells into the inlet region. An outlet path conveys the removed interface from the chamber. The outlet path includes a first sensing element to locate mononuclear cells in the removed interface and provide a sensed output upon locating mononuclear cells.

US Patent:

61685615, Jan 2, 2001

Filed:

Aug 19, 1999

Appl. No.:

9/377339

Inventors:

Robert J Cantu - Lake In The Hills IL
Kyungyoon Min - Gurnee IL
Douglas W Reitz - Green Oaks IL

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

B01D 2126

US Classification:

494 37

Abstract:

Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.