David A Carr

US Patent:

7169303, Jan 30, 2007

Filed:

May 28, 2004

Appl. No.:

10/856540

Inventors:

Thomas A. Sullivan - Pine Village IN, US
David J. Carr - West Lafayette IN, US
Stephen R. Ash - Lafayette IN, US

Assignee:

HemoCleanse Technologies, LLC - Lafayette IN

International Classification:

B01D 63/06
B01D 61/28
B01D 24/36
B01D 29/86
B01D 63/00
B01D 61/00
B01D 29/00

US Classification:

21032163, 210646, 2105123, 210208, 210206, 210270, 210271, 210276, 210280, 210319, 210332, 210298, 210305, 210308, 210320, 210383, 422 44, 422101

Abstract:

Systems and methods for extracorporeal processing of blood or other body fluid for the treatment of conditions, such as sepsis, autoimmune disease, or toxemia related to kidney failure, liver failure, or drug overdose are provided. In an extracorporeal treatment system, a fraction of a body fluid is passed into a treatment fluid, at least a portion of which is then passed through a sorbent suspension reactor for treatment by a sorbent suspension. The treatment fluid circuit can be maintained at a fixed volume, which enables accurate fluid balance between the patient and the extracorporeal circuit. Some or all of the treatment fluid, optionally also containing nutrients and/or therapeutic agents, is returned to the patient. In a peritoneal dialysis system, dialysate is passed into a patient's peritoneal cavity, recovered from the cavity, passed through a sorbent suspension reactor in accordance with the invention, and returned to the cavity.

US Patent:

7713226, May 11, 2010

Filed:

May 31, 2006

Appl. No.:

11/443710

Inventors:

Stephen R. Ash - Lafayette IN, US
David J. Carr - West Lafayette IN, US

Assignee:

Renal Solutions, Inc. - Warrendale PA

International Classification:

A61M 37/00
B01D 21/30
C02F 1/44
A61M 1/00

US Classification:

604 401, 604 501, 604 601, 210134, 210139, 210143, 210646, 422 48

Abstract:

Apparatus for use in a dialysis system are disclosed including an apparatus for delivering saline during dialysis treatment, an apparatus for delivering saline to a patient after dialysis treatment has ended, and an apparatus for alerting a patient that dialysis treatment is about to end. In the apparatus for delivering saline during dialysis treatment, a controller is configured to automatically deliver saline in response to a request. In the apparatus for delivering saline to a patient after dialysis treatment has ended, a controller is configured to automatically deliver saline after dialysis treatment has concluded, but before the patient is disconnected in response to a request. In the apparatus for alerting a patient that dialysis treatment is about to end, a controller is configured to monitor a dialysis treatment and activate an alarm when treatment is about to end.

US Patent:

7776210, Aug 17, 2010

Filed:

Jun 9, 2005

Appl. No.:

11/148928

Inventors:

Benjamin P Rosenbaum - Nashville TN, US
Stephen R. Ash - Lafayette IN, US
David J. Carr - West Lafayette IN, US

Assignee:

Renal Solutions, Inc. - Warrendale PA

International Classification:

B01D 61/00

US Classification:

210 962, 210130, 210259, 210266, 21032171, 2104331

Abstract:

A dialysate fluid circulation apparatus includes a dialyzer, a first housing and a second housing. The first housing contains material capable of releasing sodium into dialysate fluid flowing through the first housing. The second housing contains material capable of binding sodium ions from dialysate fluid flowing through the second housing. Hydraulic conduit sections are configured to extend between the dialyzer, the first housing, and the second housing to connect the dialyzer with the housings in a primary flow path for dialysate fluid to flow from the dialyzer to the first housing, from the first housing to the second housing, and from the second housing back to the dialyzer.

US Patent:

7947179, May 24, 2011

Filed:

Jun 30, 2010

Appl. No.:

12/827617

Inventors:

Benjamin P. Rosenbaum - Nashville TN, US
Stephen R. Ash - Lafayette IN, US
David J. Carr - West Lafayette IN, US

Assignee:

Renal Solutions, Inc. - Warrendale PA

International Classification:

B01D 61/34

US Classification:

210638, 210 962, 210130, 210259, 210266, 210645, 210646

Abstract:

A dialysate fluid circulation apparatus includes a dialyzer, a first housing and a second housing. The first housing contains material capable of releasing sodium into dialysate fluid flowing through the first housing. The second housing contains material capable of binding sodium ions from dialysate fluid flowing through the second housing. Hydraulic conduit sections are configured to extend between the dialyzer, the first housing, and the second housing to connect the dialyzer with the housings in a primary flow path for dialysate fluid to flow from the dialyzer to the first housing, from the first housing to the second housing, and from the second housing back to the dialyzer.

US Patent:

7981280, Jul 19, 2011

Filed:

May 31, 2006

Appl. No.:

11/443699

Inventors:

David J. Carr - West Lafayette IN, US
Stephen R. Ash - Lafayette IN, US

Assignee:

Renal Solutions, Inc. - Warrendale PA

International Classification:

B01D 61/28
B01D 61/32
B01D 61/00

US Classification:

210134, 210 85, 210 962, 210141, 210143, 210194, 2101952, 210252, 604 609, 604 611, 604 65, 604 66, 604 67

Abstract:

An extracorporeal blood treatment apparatus includes a blood treatment unit, a treatment fluid circuit, and a blood circuit. The treatment fluid circuit has a treatment fluid pump for circulating treatment fluid around the treatment fluid circuit and through the blood treatment unit. The blood circuit has a dual chamber blood pump for circulating blood around the blood circuit and through the blood treatment unit. An arterial line withdraws blood from a patient and delivers the withdrawn blood to the blood treatment unit. A venous line returns the treated blood to the patient. The arterial and venous lines can be switched between a first condition in which they are connected to the patient and a second condition in which they are disconnected from the patient and connected to each other for recirculation of blood through the blood circuit. A controller operates the blood pump, and switches the blood pump between a condition in which the dual chambers operate in phase with each other and a condition in which the dual chambers operate out of phase with each other.

US Patent:

20120258545, Oct 11, 2012

Filed:

Apr 6, 2011

Appl. No.:

13/080745

Inventors:

Stephen R. Ash - Lafayette IN, US
Thomas A. Sullivan - Pine Village IN, US
David Carr - West Lafayette IN, US
Michael James Beiriger - Pittsburgh PA, US

International Classification:

G01N 33/00
B01D 61/30
G01N 21/59
B01D 61/28

US Classification:

436133, 210 85, 210188, 73 3105, 356437

Abstract:

In one aspect of the invention, a method includes determining an amount of carbon dioxide (CO2) in dialysate flowing through a dialysis system using a CO2 sensor associated with the dialysis system, determining, using a pH sensor associated with the dialysis system, a pH level of the dialysate, and calculating a level of bicarbonate in the dialysate based at least in part on the determined amount of CO2 measured in the gas and the determined pH level of the dialysate.

US Patent:

20200282330, Sep 10, 2020

Filed:

May 25, 2020

Appl. No.:

16/882690

Inventors:

- Lafayette IN, US
TOM SULLIVAN - Lafayette IN, US
DAVID CARR - LAFAYETTE IN, US

International Classification:

B01D 15/02
B01J 20/28
B01J 20/20
B01J 20/02
A61M 1/16
A61M 1/28
A61M 1/34
A61M 1/36

Abstract:

Methods and devices for powdered sorbent regeneration of biologic fluids are disclosed. The present invention includes three novel methods, which may be used singly or in any combination, for constraining or immobilizing powders so that they can be perfused with a biological fluid or dialysate: a porous carbon block filter, a filtration bed of very fine powder, and a cone-shaped reactor.

US Patent:

20190008894, Jan 10, 2019

Filed:

Jun 27, 2018

Appl. No.:

16/020993

Inventors:

- Lafayette IN, US
David John Carr - West Lafayette IN, US

International Classification:

A61K 31/795
A61K 33/42
A61K 33/24
A61K 9/14
A61P 39/00

Abstract:

Oral sorbent compositions that bind small and charged toxins and methods of use.