Brian C Lauman

US Patent:

7107837, Sep 19, 2006

Filed:

Jan 22, 2002

Appl. No.:

10/054487

Inventors:

Brian Lauman - Clearwater FL, US
Pete Hopping - Lutz FL, US
Rick Kienman - Tampa FL, US
Shahid Din - Palm Harbor FL, US
Robert W. Childers - New Port Richey FL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Wallisellen

International Classification:

G01F 23/26

US Classification:

73304C, 73232

Abstract:

A fluid volumetric pumping system has a fluid pump and capacitor plates disposed around a pump chamber of the fluid pump. The capacitance between the capacitor plates changes as the volume of fluid in the pump chamber changes. An electrical circuit measures a change in the capacitance between the plates and outputs a signal indicative of the volume of fluid in the pump chamber. The pump having the capacitance sensor of the present invention fluidly connects to a patient. In an embodiment, a peritoneal dialysis system provides dialysate to the patient via the pump, and the capacitance sensor measures the volume of dialysate supplied to and drained from a peritoneal cavity of the patient.

US Patent:

7153285, Dec 26, 2006

Filed:

Jan 17, 2002

Appl. No.:

10/051609

Inventors:

Brian Lauman - Clearwater FL, US
John Parish - Clearwater FL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Wallisellen

International Classification:

A61M 5/00
A61F 7/00

US Classification:

604 608, 604113, 604114, 604 28, 392470, 392422

Abstract:

An in-line fluid heater for heating fluid, such as dialysis fluid for use in dialysis therapy is provided. The fluid heater is a dual heater having a primary infrared heater and a secondary plate heater. A controller is operatively connected to the infrared heater and to the plate heater and operates one or both of the infrared heater and the plate heater to maintain a temperature of the fluid.

US Patent:

7153286, Dec 26, 2006

Filed:

May 24, 2002

Appl. No.:

10/155603

Inventors:

Don Busby - Tampa FL, US
Peter Hopping - Lutz FL, US
Robert Childers - New Port Richey FL, US
Shahid Din - Palm Harbor FL, US
Brian Lauman - Clearwater FL, US
Rick Kienman - Tampa FL, US
Ian Richardson - Clearwater FL, US
Loren M. Lundtveit - Wadsworth IL, US
Jose Alvaro - Vernon Hills IL, US
Bruce Ming-Da Eu - Vernon Hills IL, US
Sherwin Shang - Vernon Hills IL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Zurich

International Classification:

A31M 37/00
C02F 1/33
A61M 1/36

US Classification:

604 611, 210646, 210252, 210258, 604 401, 604 504, 604 61, 604 501, 422 44

Abstract:

The present invention provides automated peritoneal dialysis systems, methods of operating the systems and devices for performing same. A typical therapy performed by the present invention begins by draining dialysis solution that is already in the patient's peritoneal cavity. The system pumps fresh dialysate from one of a plurality of supply bags, through an in-line heater to the patient's peritoneal cavity. After a dwell period, the spent dialysate in the cavity is pumped out of the patient to a drain or other disposal means. The system then pumps fresh dialysate from the supply bags to the patient and the procedure is repeated as defined in the therapy protocol. The system can pump a last bag of dialysate to the peritoneal cavity for an extended dwell, such as a daytime dwell.

US Patent:

7238164, Jul 3, 2007

Filed:

Dec 31, 2002

Appl. No.:

10/335646

Inventors:

Robert W. Childers - New Port Richey FL, US
Richard Avoy - Palm Harbor FL, US
John Booras - Wildwood IL, US
Paul Grippo - Palm Harbor FL, US
Andrew D. Hopping - Largo FL, US
David Howard - Crystal Lake IL, US
Jeffrey W. Jerrell - Clearwater FL, US
Benjamin Kellam - Clearwater FL, US
Brian Lauman - Clearwater FL, US
Sherwin Shang - Vernon Hills IL, US
David Vescovi - Pinellas Park FL, US
Tahua Yang - Woodridge IL, US
Alex Yu - Safety Harbor FL, US

Assignee:

Baxter International Inc. - Derrfield IL
Baxter Healthcare S.A. - Zurich

International Classification:

A61M 37/00
C02F 1/44
F04B 45/04
C02F 9/00

US Classification:

604 611, 604 61, 604 501, 604 401, 210258, 210645, 4174772

Abstract:

The present invention provides systems, methods and apparatuses for medical fluid delivery systems that employ a pumping cassette. In particular, the present invention provides systems, methods and apparatuses for cassette-based dialysis therapies including hemodialysis, hemofiltration, APD (including tidal modalities) and CFPD. The embodiments described include a combined pump/valve housing, a fail safe pump/valve arrangement, a cassette auto-alignment feature, a pumping membrane material, a multiplexing valve arrangement, an expert fluid pumping management system, an integral port vent and an in-line air separation chamber and combinations of each of these.

US Patent:

7458951, Dec 2, 2008

Filed:

Dec 26, 2006

Appl. No.:

11/616204

Inventors:

Brian Lauman - Clearwater FL, US
John Parish - Clearwater FL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Zurich

International Classification:

A61M 37/00
A61F 7/00

US Classification:

604 608, 604113, 604114

Abstract:

A method of structuring a machine to heat a dialysis fluid includes: (i) allowing flow of the dialysis fluid through a disposable fluid conduit; (ii) directing energy from a 2-dimensional energy source to apply energy to the dialysis fluid in the disposable fluid conduit; and (iii) directing energy from a 3-dimensional energy source to apply energy to the dialysis fluid in the disposable fluid conduit.

US Patent:

7789849, Sep 7, 2010

Filed:

Dec 21, 2006

Appl. No.:

11/614850

Inventors:

Don Busby - Tampa FL, US
Peter Hopping - Lutz FL, US
Robert Childers - New Port Richey FL, US
Shahid Din - Palm Harbor FL, US
Brian Lauman - Clearwater FL, US
Rick Kienman - Tampa FL, US
Ian Richardson - Clearwater FL, US
Jose Alvaro - Vernon Hills IL, US
Bruce Ming-Da Eu - Vernon Hills IL, US
Sherwin Shang - Vernon Hills IL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Glattpark (Opfikon)

International Classification:

A61M 1/00
A61M 37/00

US Classification:

604 29, 604131, 604151, 604153

Abstract:

A peritoneal dialysis system includes: (i) an enclosure; (ii) a stepper motor housed by the enclosure; (iii) a pump head in operable communication with the stepper motor; and (iv) a disposable unit including at least one flexible membrane attached to a rigid piece, the enclosure configured to receive the disposable unit such that the stepper motor can move the pump head towards and away from the flexible membrane to cause, (a) the flexible membrane to move outwardly with respect to the rigid piece as the pump head is moved away from the disposable unit, and (b) the flexible membrane to move inwardly with respect to the rigid piece as the pump head is moved away from the disposable unit.

US Patent:

7867189, Jan 11, 2011

Filed:

Dec 28, 2006

Appl. No.:

11/617527

Inventors:

Robert W. Childers - New Port Richey FL, US
Richard Avoy - Palm Harbor FL, US
John Booras - Wildwood IL, US
Paul Grippo - Palm Harbor FL, US
Andrew D. Hopping - Largo FL, US
David Howard - Gulfport FL, US
Jeffrey W. Jerrell - Clearwater FL, US
Benjamin Kellam - Clearwater FL, US
Brian Lauman - Clearwater FL, US
Sherwin Shang - Vernon Hills IL, US
David Vescovi - Pinellas Park FL, US
Tahua Yang - Woodridge IL, US
Alex Yu - Safety Harbor FL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Glattpark (Opfikon)

International Classification:

A61M 1/00

US Classification:

604 29, 604 31, 604131

Abstract:

A dialysis machine includes: a hardware unit including at least one pump actuator, at least one valve actuator and a cassette interface, the cassette interface including: (i) a plate that abuts the cassette; (ii) at least one pump aperture defined by the plate; (iii) at least one pump head moveable out of and retractable into the at least one pump aperture to operate a pumping portion of the cassette; (iv) at least one valve aperture defined by the plate; (v) at least one valve apparatus moveable out of and retractable into the at least one valve aperture to operate a valve portion of the cassette; (vi) at least one sensor aperture defined by the plate; and (vii) at least one sensor located in the least one sensor aperture, the at least one sensor operable with a sensor portion of the cassette.

US Patent:

7922686, Apr 12, 2011

Filed:

Jul 17, 2003

Appl. No.:

10/624150

Inventors:

Robert W. Childers - Trinity FL, US
Lee Pan - Tampa FL, US
Brian Lauman - Clearwater FL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Glattpark (Opfikon)

International Classification:

A61M 1/00

US Classification:

604 29, 604 28

Abstract:

Systems and methods for providing multiple pass continuous flow dialysis therapy are provided. The present invention includes a fluid circuit connected to a patient via a catheter thereby defining a fluid loop along which a therapy fluid including a dialysate can be continuously circulated into, through and out of a peritoneal cavity of a patient to remove a therapeutically effective amount of excess water and solutes including uremic toxins. The feed rate and discharge rate of therapy fluid into the fluid loop can be controllably regulated in proportion to the circulation rate of fluid in the fluid loop such that the therapy fluid can pass a multiple number of times along the fluid loop prior to discharge.