Patents by Inventor Michael E. Hogard
Michael E. Hogard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8496809Abstract: A kidney failure treatment system includes: (i) a dialysate supply; (ii) a weighing device; a control container coupled operably to the weighing device; (iii) a diffusion membrane; (iv) a drain; first and second pumps; (v) a first fluid conduit coupled fluidly to the dialysate supply and the diffusion membrane, the first fluid conduit coupled operably to the first pump; (vi) a second fluid conduit coupled fluidly to the control container and the drain, the second fluid conduit coupled operably to the first pump; and (vii) a third fluid conduit coupled fluidly to the diffusion membrane and the control conduit, the third fluid conduit coupled operably to the second pump.Type: GrantFiled: June 5, 2006Date of Patent: July 30, 2013Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Rodolfo G. Roger, Michael E. Hogard, Thomas D. Kelly
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Patent number: 8444587Abstract: An air purging method includes: (a) detecting a low fluid level in a blood circuit indicating a high amount of air in the blood circuit; (b) stopping a blood pump; (c) closing a venous patient line; (d) opening a blood circuit air vent valve and a drain valve; and (e) running the blood pump to meter air through the air vent valve and the drain valve to a drain.Type: GrantFiled: September 24, 2008Date of Patent: May 21, 2013Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Thomas D. Kelly, Marc S. Minkus, Angelito A. Bernardo, William P. Burns, Robert W. Childers, Shincy J. Maliekkal, Matthew R. Muller, Justin B. Rohde, Michael E. Hogard
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Patent number: 8287724Abstract: A dialysis system instrument includes a dialysis instrument, a disposable pumping and valving cassette apparatus operable with pumping and valving actuators of the dialysis instrument, the disposable cassette including an electronic cell and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.Type: GrantFiled: July 5, 2007Date of Patent: October 16, 2012Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: James S. Slepicka, Mark Perry, William Chan, Richard Kienman, Angel M. Lasso, Donald Busby, Rodolfo G. Roger, Michael E. Hogard
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Patent number: 8221529Abstract: In an embodiment, a dialysis fluid cassette is disclosed. The cassette includes a plurality of walls defining at least one valve chamber, a dialysis fluid inlet, a dialysis fluid outlet and a dialysis fluid pathway. The cassette further includes a baffle extending from a first one of the walls to an opposing second one of the walls. The baffle includes an end fixed to a third one of the plurality of walls and a free end. The fixed end separates the dialysis fluid inlet from the dialysis fluid outlet and the baffle and the plurality of walls are constructed and arranged such that the flow of dialysis fluid along the pathway defined in part by the baffle slows as the flow approaches the free end of the baffle.Type: GrantFiled: November 21, 2011Date of Patent: July 17, 2012Assignees: Baxter International, Baxter Healthcare S.A.Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
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Publication number: 20120065581Abstract: In an embodiment, a dialysis fluid cassette is disclosed. The cassette includes a plurality of walls defining at least one valve chamber, a dialysis fluid inlet, a dialysis fluid outlet and a dialysis fluid pathway. The cassette further includes a baffle extending from a first one of the walls to an opposing second one of the walls. The baffle includes an end fixed to a third one of the plurality of walls and a free end. The fixed end separates the dialysis fluid inlet from the dialysis fluid outlet and the baffle and the plurality of walls are constructed and arranged such that the flow of dialysis fluid along the pathway defined in part by the baffle slows as the flow approaches the free end of the baffle.Type: ApplicationFiled: November 21, 2011Publication date: March 15, 2012Applicants: BAXTER HEALTHCARE S.A., BAXTER INTERNATIONAL INC.Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
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Patent number: 8080091Abstract: A dialysis fluid system includes an instrument including a pump actuator and a fluid heater, and a dialysis fluid cassette. The dialysis fluid cassette includes a rigid portion defining a pumping section for operation with the pump actuator and a heating section for operation with the fluid heater. The heating section includes a dialysis fluid inlet, a dialysis fluid outlet, and a dialysis fluid heating area located between the fluid inlet and the fluid outlet, the heating section further includes an air separation chamber for collecting air separated from the dialysis fluid.Type: GrantFiled: February 18, 2011Date of Patent: December 20, 2011Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
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Publication number: 20110144557Abstract: A dialysis fluid system includes an instrument including a pump actuator and a fluid heater, and a dialysis fluid cassette. The dialysis fluid cassette includes a rigid portion defining a pumping section for operation with the pump actuator and a heating section for operation with the fluid heater. The heating section includes a dialysis fluid inlet, a dialysis fluid outlet, and a dialysis fluid heating area located between the fluid inlet and the fluid outlet, the heating section further includes an air separation chamber for collecting air separated from the dialysis fluid.Type: ApplicationFiled: February 18, 2011Publication date: June 16, 2011Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
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Patent number: 7938792Abstract: An extracorporeal therapy machine removes blood from a patient in order to treat the blood and then return the blood to the patient. If the removal needle or the return needle is dislodged and blood is not returned, the patient may suffer a great blood loss. A new technique for detecting dislodgement uses the normal, initial values of a plurality of parameters of the patient and the therapy machine to set criteria or limits for an alarm, and then adjusts those criteria based on the later values of those parameters as they change during one therapy or over several therapies experienced by the patient.Type: GrantFiled: October 1, 2007Date of Patent: May 10, 2011Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Rodolfo G. Roger, Michael E. Hogard, Joel Tejedor
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Patent number: 7892331Abstract: A dialysis fluid cassette includes a rigid portion defining at least one valve chamber, the rigid portion further defining an air separation chamber, the air separation chamber when in an operating position including a first sidewall and a second sidewall, a first fluid opening, a second fluid opening, and a separation wall extending from the first sidewall to the second sidewall, the separation wall having a free edge residing within the air separation chamber, the separation wall forcing the dialysis fluid to flow from one of the fluid openings around the free edge of the separation wall to the other of the openings.Type: GrantFiled: October 1, 2007Date of Patent: February 22, 2011Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
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Publication number: 20100051552Abstract: A system for monitoring water quality for dialysis, dialysis fluids, and body fluids treated by dialysis fluids, is disclosed. The system uses microelectromechanical systems (MEMS) sensors for detecting impurities in input water or dialysis fluid, and in the prepared dialysate. These sensors may also be used to monitor and check the blood of the patient being treated. These sensors include ion-selective sensors, for ions such as ammonium or calcium, and also include amperometric array sensors, suitable for ions from chlorine or chloramines, e.g., chloride. These sensors assist in the monitoring of water supplies from a city water main or well. The sensors may be used in conjunction with systems for preparing dialysate solutions from water for use at home or elsewhere.Type: ApplicationFiled: August 28, 2008Publication date: March 4, 2010Applicants: Baxter International Inc., Baxter Healthcare S.A.Inventors: Justin B. Rohde, William W. Han, Elizabeth A. Everitt, Michael E. Hogard, Ying-Cheng Lo, Erin M. Copeland, William P. Burns
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Publication number: 20090124963Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.Type: ApplicationFiled: November 9, 2007Publication date: May 14, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Michael E. Hogard, Donald D. Busby, Robert W. Childers, Yuanpang S. Ding, Katherine M. Holian, Mark E. Jablonski, Thomas D. Kelly, Ying-Cheng Lo, Shincy J. Maliekkal, Rodolfo G. Roger, Donald A. Smith, Atif M. Yardimci
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Publication number: 20090088683Abstract: An extracorporeal therapy machine removes blood from a patient in order to treat the blood and then return the blood to the patient. If the removal needle or the return needle is dislodged and blood is not returned, the patient may suffer a great blood loss. A new technique for detecting dislodgement uses the normal, initial values of a plurality of parameters of the patient and the therapy machine to set criteria or limits for an alarm, and then adjusts those criteria based on the later values of those parameters as they change during one therapy or over several therapies experienced by the patient.Type: ApplicationFiled: October 1, 2007Publication date: April 2, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Rodolfo G. Roger, Michael E. Hogard, Joel Tejedor
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Publication number: 20090084719Abstract: A dialysis fluid cassette includes a rigid portion defining at least one valve chamber, the rigid portion further defining an air separation chamber, the air separation chamber when in an operating position including a first sidewall and a second sidewall, a first fluid opening, a second fluid opening, and a separation wall extending from the first sidewall to the second sidewall, the separation wall having a free edge residing within the air separation chamber, the separation wall forcing the dialysis fluid to flow from one of the fluid openings around the free edge of the separation wall to the other of the openings.Type: ApplicationFiled: October 1, 2007Publication date: April 2, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
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Publication number: 20090088675Abstract: An air purging method includes: (a) detecting a low fluid level in a blood circuit indicating a high amount of air in the blood circuit; (b) stopping a blood pump; (c) closing a venous patient line; (d) opening a blood circuit air vent valve and a drain valve; and (e) running the blood pump to meter air through the air vent valve and the drain valve to a drain.Type: ApplicationFiled: September 24, 2008Publication date: April 2, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Thomas D. Kelly, Marc S. Minkus, Angelito A. Bernardo, William P. Burns, Robert W. Childers, Shincy J. Maliekkal, Matthew R. Muller, Justin B. Rohde, Michael E. Hogard
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Publication number: 20090007642Abstract: A dialysate testing method in one embodiment includes placing electrical contacts in a dialysate flow path, measuring an electrical property of the dialysate as it flows through the flow path and past the contacts, and determining whether the dialysate has been mixed properly from the detected electrical property. A dialysate testing method in another embodiment includes flowing dialysate past a pair of electrical contacts, calculating a conductivity of the dialysate using an algorithm that takes into account a geometry of the contacts, and using the calculated conductivity to determine if the dialysate has been removed properly.Type: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Donald Busby, Rodolfo G. Roger, Michael E. Hogard, James S. Slepicka, Mark Perry, William Chan, Richard Kienman, Angel M. Lasso
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Publication number: 20090012452Abstract: A dialysis system instrument includes a dialysis instrument, a disposable pumping and valving cassette apparatus operable with pumping and valving actuators of the dialysis instrument, the disposable cassette including an electronic cell and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.Type: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: James S. Slepicka, Mark Perry, William Chan, Richard Kienman, Angel M. Lasso, Donald Busby, Rodolfo G. Roger, Michael E. Hogard
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Publication number: 20080093276Abstract: A kidney failure treatment system includes: (i) a dialysate supply; (ii) a weighing device; a control container coupled operably to the weighing device; (iii) a diffusion membrane; (iv) a drain; first and second pumps; (v) a first fluid conduit coupled fluidly to the dialysate supply and the diffusion membrane, the first fluid conduit coupled operably to the first pump; (vi) a second fluid conduit coupled fluidly to the control container and the drain, the second fluid conduit coupled operably to the first pump; and (vii) a third fluid conduit coupled fluidly to the diffusion membrane and the control conduit, the third fluid conduit coupled operably to the second pump.Type: ApplicationFiled: June 5, 2006Publication date: April 24, 2008Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Rodolfo G. Roger, Michael E. Hogard, Thomas D. Kelly
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Patent number: 7351340Abstract: A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed. These include a method providing an apparatus for dialyzing to a consumer, with the apparatus including a controller for controlling a dialysate parameter, a delivery system for delivering the dialysate to a dialysate compartment of a dialyzer, and a user/machine interface having a touch screen to display an indicium corresponding to a parameter pertinent to operation of the apparatus for use in dialysis and to enable a user though touching the indicium to effect a change in the parameter. The method also includes providing supplies that are useable with the apparatus to the consumer.Type: GrantFiled: June 13, 2003Date of Patent: April 1, 2008Assignee: Baxter International Inc.Inventors: Mark E. Connell, Robert A. Bedient, Raymond Elsen, Michael E. Hogard, Harley D. Johnson, Thomas D. Kelly, Jean McEvoy Long, Bruce A. Peterson, William G. Preston, Jr., Dalibor J. Smejtek
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Patent number: 7318892Abstract: A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed.Type: GrantFiled: July 5, 2005Date of Patent: January 15, 2008Assignee: Baxter International Inc.Inventors: Mark E. Connell, Robert A. Bedient, Raymond Elsen, Michael E. Hogard, Harley D. Johnson, Thomas D. Kelly, Jean McEvoy Long, Bruce A. Peterson, William G. Preston, Jr., Dalibor J. Smejtek
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Patent number: 7303680Abstract: A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed.Type: GrantFiled: June 13, 2003Date of Patent: December 4, 2007Assignee: Baxter International Inc.Inventors: Mark E. Connell, Robert A. Bedient, Raymond Elsen, Michael E. Hogard, Harley D. Johnson, Thomas D. Kelly, Jean McEvoy Long, Bruce A. Peterson, William G. Preston, Jr., Dalibor J. Smejtek