Patents Represented by Attorney, Agent or Law Firm Robert M. Barrett
  • Patent number: 6196992
    Abstract: A portable pump apparatus for use in CAPD is provided as well as a method for providing CAPD to a patient. The portable pump apparatus for CAPD has a housing containing a pump, and a power supply, preferably a rechargeable battery, connected to the housing and electrically connected to drive the pump. A control knob on the housing is constructed and arranged to adjust the speed of the pump. A cover is mounted to the housing to enclose the pump. The cover has an inlet port and an outlet port to securely hold a tube thereunder. The portable pump apparatus for CAPD further has a display for providing drainage information and a clip so that the apparatus can be worn by a patient.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: March 6, 2001
    Assignee: Baxter International Inc.
    Inventors: Michael R. Keilman, Kelly B. Smith
  • Patent number: 6197207
    Abstract: Methods for reducing or preventing the transmission of transmissible spongiform encephalopathy through blood or blood products are provided. The methods require the intact removal of leukocytes that are present in a blood product or an intermediate of a blood product prior to administering the blood product to a patient. To prevent or reduce the transmission of transmissible spongiform encephalopathies disease substantially all leukocytes are removed intact without significant lysis of such leukocytes.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: March 6, 2001
    Assignee: Baxter International Inc.
    Inventors: John Chapman, Jerry Fisher
  • Patent number: 6196991
    Abstract: A dual-filled twin bag, a packaging including the twin bag, and a method for forming the packaged twin bags are provided. Each of two bags, a solution bag (10) and a drain bag (12) for a system used for a peritoneal dialysis procedure, are filled, at least partially, with a solution (14). A tubing set (16) connects the two filled bags (10,12) and may also be filled with solution (14) which is added to the bags (10,12) and the tubing set (16) during the manufacturing process. The tubing set (16) is sandwiched between the solution bag (10) and the drain bag (12) and subsequently packaged in an overpouch (24). The method for forming the package including the bags filled with solution is simplified and the overall package size is reduced due to the sandwiched tubing set (16) between the solution bags (10,12) and the provision of solution in both bags (10,12).
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: March 6, 2001
    Assignee: Baxter International Inc.
    Inventor: Michael R. Keilman
  • Patent number: 6189704
    Abstract: A bone marrow collection kit is provided comprising a collection container for receiving a bone marrow containing fluid having a body that defines an interior and an inlet opening and an outlet opening and including a prefilter that extends from the outlet opening into the interior of the collection container so that fluid must flow through the prefilter to exit the collection container through the outlet opening. A first inline filter member is coupled to the outlet opening of the collection container, the first inline filter member having a flexible plastic body that defines an interior, and an inlet opening and an outlet opening and the interior including a filter so constructed and arranged that fluid that enters the inlet opening must flow through the filter to exit the first inline filter member through the outlet opening.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: February 20, 2001
    Assignee: Baxter International Inc.
    Inventors: T. Michael Dennehey, Joseph C. West, Jr., James W. Yang
  • Patent number: 6158319
    Abstract: A system and a method are provided for detecting a bag that has been subjected to a process, such as illumination, wherein the contents of the bag require processing before subsequent use. The system (1) has a drawer (10) on which one or more bags may be placed and properly oriented. Punches (22) are provided for punching slugs from the bag indicative of a status of the processing of the bag. The punches (22) are aligned with die apertures (26) of a die (24) and corresponding punch apertures (20) through the drawer (10). The bag may include polarizing materials (50) such that the status of the processing of the bag (52) may be sensed. To this end, a rotating polarizing piece (70) is provided as well as a light source (34) and a sensor (38). The polarities between the polarizing piece (50) of the bag and the rotating polarizing piece (70) is monitored by the sensor (38) to indicate a condition or status of the processing of the bag and/or to further indicate tampering taking place in the process.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: December 12, 2000
    Assignee: Baxter International Inc.
    Inventor: Edmund D. D'Silva
  • Patent number: 6149997
    Abstract: The present invention provides a non-PVC, non-DEHP material that can be used for medical grade tubing. Additionally, the present invention provides medical grade tubing made from such a material.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: November 21, 2000
    Assignee: Baxter International Inc.
    Inventors: Indrajit Patel, Harold Bowerman, Larry Rosenbaum, Rich Mennenoh, Pat Ryan
  • Patent number: 6143181
    Abstract: Dialysis machine for alternatively hospital care and self-care having a touch screen (16) which can be adjusted universally and to a desired vertical position on the dialysis machine and can be locked in the desired adjusted position. As a consequence thereof, the touch screen can be arrested in a position in relation to the position of the person controlling the dialysis machine which allows the touch screen to be comfortably reached irrespective of the position of said person.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: November 7, 2000
    Assignee: Althin Medical AB
    Inventors: Thore Falkvall, Per-Olov Carlsson, Lars-Olof Sandberg, Bjorn Gillerfalk
  • Patent number: 6117122
    Abstract: A system and a method are provided to effect solution exchange particularly for a patient requiring peritoneal dialysis. The system includes a device (1) that is portable and particularly adaptable for patients requiring a night time exchange or an additional exchange. The device (1) includes an operator-touch control panel (10) operatively connected to a pouch (26) with an incorporated heater (12). The pouch (26) holds a solution bag (18) and may be selectively opened and closed by a cover (28). A drain tray (30) holds a drain bag (20) and has a scale (14) incorporated therein. The pouch (26) is connected to the control panel (10) by an upper arm (38), and the drain tray (30) is connected to the control panel (10) by a lower arm (42). The device (1) may be collapsed by releasing the upper arm (38) and the lower arm (42) such that the system (1) lays in a substantially flat arrangement when not in use.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: September 12, 2000
    Assignee: Baxter International Inc.
    Inventors: Shahid Din, Greg Worsnick
  • Patent number: 6074359
    Abstract: An improved peritoneal dialysis method and system is provided. The method utilizes a tidal oscillating pulse peritoneal dialysis system. To this end, a system for providing peritoneal dialysis to a patient is provided. The system comprises a single catheter that is placed in the patient, a reservoir of dialysate having a volume greater than or equal to three liters, and a single pump for pumping the dialysate from the reservoir into and out of the patient.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: June 13, 2000
    Assignee: Baxter International Inc.
    Inventors: Prakash R. Keshaviah, Jim Ebben, Paul Emerson, Kazuo Kumano
  • Patent number: 6036680
    Abstract: A system, a method and administration lines are provided for self-priming of a solution delivery system. The administration lines are arranged such that resultant forces acting on the lines create different forces applied on each lumen resulting in solution flowing in one of the lumen undergoing a higher isostatic pressure. The lumens forming the administration line may be formed from concentric tubings or formed from separate tubings extending varied lengths into the solution container. As a result, automatic priming of the administration line and the solution delivery system is provided.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: March 14, 2000
    Assignee: Baxter International Inc.
    Inventors: Peter Horne, Eric J. Henaut, Patrick Balteau, Michael T. K. Ling
  • Patent number: 6017942
    Abstract: Methods and compositions for treating renal failure patients are provided. Pursuant to the present invention, a renal failure patient is provided with an intravenous or dialysis solution that includes a therapeutically effective amount of L-carnosine. In part, the L-carnosine will prevent the renal failure patient from developing L-carnosine deficiency.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: January 25, 2000
    Assignee: Baxter International Inc.
    Inventor: Jonas Bergstrom
  • Patent number: 6012578
    Abstract: A dual-filled twin bag, a packaging including the twin bag, and a method for forming the packaged twin bags are provided. Each of two bags, a solution bag (10) and a drain bag (12) for a system used for a peritoneal dialysis procedure, are filled, at least partially, with a solution (14). A tubing set (16) connects the two filled bags (10,12) and may also be filled with solution (14) which is added to the bags (10,12) and the tubing set (16) during the manufacturing process. The tubing set (16) is sandwiched between the solution bag (10) and the drain bag (12) and subsequently packaged in an overpouch (24). The method for forming the package including the bags filled with solution is simplified and the overall package size is reduced due to the sandwiched tubing set (16) between the solution bags (10,12) and the provision of solution in both bags (10,12).
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: January 11, 2000
    Assignee: Baxter International Inc.
    Inventor: Michael R. Keilman
  • Patent number: 5984891
    Abstract: A portable pump apparatus for use in CAPD is provided as well as a method for providing CAPD to a patient. The portable pump apparatus for CAPD has a housing containing a pump, and a power supply, preferably a rechargeable battery, connected to the housing and electrically connected to drive the pump. A control knob on the housing is constructed and arranged to adjust the speed of the pump. A cover is mounted to the housing to enclose the pump. The cover has an inlet port and an outlet port to securely hold a tube thereunder. The portable pump apparatus for CAPD further has a display for providing drainage information and a clip so that the apparatus can be worn by a patient.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: November 16, 1999
    Assignee: Baxter International Inc.
    Inventors: Michael R. Keilman, Kelly B. Smith
  • Patent number: 5972217
    Abstract: Blood filtration devices and methods of filtering are disclosed. In part, a blood filtration device is provided comprising a housing defining an interior periphery. The device includes a rotating structure mounted within the interior periphery and defining with the housing an annular gap within the interior periphery, an inlet fluid path for allowing a blood product to flow into the annular gap, and the rotating structure including an exterior surface that includes a filter membrane. The filter membrane has a coating thereon comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight bifunctional diamino-polyoxyalkylene oxide derivative.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: October 26, 1999
    Assignee: Baxter International Inc.
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson
  • Patent number: 5968966
    Abstract: Methods and compositions for treating renal failure patients are provided. Pursuant to the present invention, a renal failure patient is provided with an intravenous or dialysis solution that includes a therapeutically effective amount of L-carnosine. In part, the L-carnosine will prevent the renal failure patient from developing L-carnosine deficiency.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: October 19, 1999
    Assignee: Baxter International Inc.
    Inventor: Jonas Bergstrom
  • Patent number: 5965533
    Abstract: The present invention provides a peritoneal dialysis solution that contains atrial natriuretic peptide (ANP), a derivative of ANP, an analogue of ANP, a substance that binds ANP to clearance receptors or a substance that promotes ANP synthesis, which results in an increased net ultrafiltration and increased sodium clearance experienced in peritoneal dialysis patients.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: October 12, 1999
    Assignees: Baxter International Inc., Miles G. Johnston
    Inventors: Chi J. Chen, Ty R. Shockley, Miles G. Johnston
  • Patent number: 5955450
    Abstract: Peritoneal dialysis solutions are specially formulated for use during and immediately after an episode of peritonitis. The solutions include one or more additives to minimize the injury and physiological effects that peritonitis can cause. One additive is a mixture of amino acids sufficient to maintain a positive nitrogen balance, at least one of the amino acids being present in a dipeptide form. Another additive is a compound that scavenges free radicals generated by peritoneal macrophages activated by the peritonitis. Another additive is chondroitin sulfate that changes the permeability of the peritoneal membrane during subsequent dialysis using solutions free of chondroitin sulfate. Another additive is the degradation products of hyaluronic acid to enhance the regeneration of the peritoneal mesothelium without fibrosis.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: September 21, 1999
    Assignee: Baxter International Inc.
    Inventors: Andrzej Breborowicz, Dimitrios G. Oreopoulos
  • Patent number: 5948385
    Abstract: An antimicrobial material incorporated with a molecular halogen is provided. The antimicrobial material includes a plastic material and a molecular halogen entrapped within the plastic material. A directional release material is also provided in the present application. The directional release material allows for the control of the rate and site of halogen release. Still further, method of impregnating a plastic material are also provided.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: September 7, 1999
    Assignee: Baxter International Inc.
    Inventors: John R. Chapman, Ying-Cheng Lo, Winnie Kubey, Clifford J. Holmes, David Bell
  • Patent number: 5925011
    Abstract: A system and a method are provided for admixing solutions. The system includes containers separately accessible by one or more pumps for mixture of the solutions in a container immediately before administration to a peritoneal cavity of a patient. Alternatively, the system and method allow for direct administration of the mixed solution to the peritoneal cavity of a patient without intermediate mixing thereof. The solutions may be mixed in predetermined ratios as input to the system prior to delivery.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: July 20, 1999
    Assignee: Baxter International Inc.
    Inventors: Dirk Faict, Chi J. Chen, Francesco Peluso, Robert Warren Childers, Patrick Balteau, Vital Eerlingen, Paul Frederick Emerson, Lisa Colleran
  • Patent number: 5906915
    Abstract: The present invention provides an improved aqueous solution for suspending and storing red blood cells. The solution includes sodium citrate, a combination of sodium biphosphate and sodium phosphate dibasic, adenine, and mannitol. The solution is formulated at a low osmolarity and has a physiological pH of approximately 7.4. The solution simultaneously maintains stored red cells ATP and 2,3-BPG. Also disclosed is a method for storing red blood cells comprising adding an anticoagulant with a reduced citrate concentration compared to a CPD solution comprising 26.3 g/l, sodium citrate and 3.28 g/l citric acid hydrous to whole blood, separating the red cells and adding a storage solution comprising sodium citrate, sodium diphosphate, sodium phosphate dibasic, adenine and mannitol.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: May 25, 1999
    Assignee: Baxter International Inc.
    Inventors: Jean-Marc Payrat, Claes F. Hogman, Jack DeBrauwere, Jean Marie Mathias