Jason B Demers

US Patent:

7967022, Jun 28, 2011

Filed:

Oct 12, 2007

Appl. No.:

11/871803

Inventors:

Kevin L. Grant - Litchfield NH, US
James D. Dale - Nashua NH, US
Jason A. Demers - Manchester NH, US
Michael J. Wilt - Windham NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

G05D 11/00

US Classification:

137100, 1375653, 417480

Abstract:

A cassette integrated system. The cassette integrated system includes a mixing cassette, a balancing cassette, a middle cassette fluidly connected to the mixing cassette and the balancing cassette and at least one pod. The mixing cassette is fluidly connected to the middle cassette by at least one fluid line and the middle cassette is fluidly connected to the balancing cassette by at least one fluid line. The at least one pod is connected to at least two of the cassettes wherein the pod is located in an area between the cassettes.

US Patent:

8246826, Aug 21, 2012

Filed:

Feb 27, 2008

Appl. No.:

12/072908

Inventors:

Michael J. Wilt - Windham NH, US
Jason A. Demers - Manchester NH, US
Kevin L. Grant - Litchfield NH, US
Brian Tracey - Litchfield NH, US
James D. Dale - Nashua NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

B01D 61/28
B01D 61/30
B01D 61/26
G05D 11/00

US Classification:

210258, 210 85, 210 87, 210 90, 210 97, 2102571, 2102572, 2103216, 604 401, 604 611, 417375

Abstract:

The present invention generally relates to hemodialysis and similar dialysis systems, including a variety of systems and methods that would make hemodialysis more efficient, easier, and/or more affordable. One aspect of the invention is generally directed to new fluid circuits for fluid flow. In one set of embodiments, a hemodialysis system may include a blood flow path and a dialysate flow path, where the dialysate flow path includes one or more of a balancing circuit, a mixing circuit, and/or a directing circuit. Preparation of dialysate by the preparation circuit, in some instances, may be decoupled from patient dialysis. In some cases, the circuits are defined, at least partially, within one or more cassettes, optionally interconnected with conduits, pumps, or the like. In one embodiment, the fluid circuit and/or the various fluid flow paths may be at least partially isolated, spatially and/or thermally, from electrical components of the hemodialysis system. In some cases, a gas supply may be provided in fluid communication with the dialysate flow path and/or the dialyzer that, when activated, is able to urge dialysate to pass through the dialyzer and urge blood in the blood flow path back to the patient.

US Patent:

8292594, Oct 23, 2012

Filed:

Apr 13, 2007

Appl. No.:

11/787212

Inventors:

Brian Tracey - Litchfield NH, US
Larry B. Gray - Merrimack NH, US
Jason A. Demers - Manchester NH, US
James D. Dale - Nashua NH, US
N. Christopher Perry - Manchester NH, US
Michael J. Wilt - Windham NH, US
Scott A. Leonard - Bedford NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

F04B 49/00
F04B 45/00
F04B 43/10

US Classification:

417 43, 417395

Abstract:

Certain types of reciprocating positive-displacement pumps (which may be referred to hereinafter as “pods,” “pump pods,” or “pod pumps”) are used to pump fluids, such as a biological fluid (e. g. , blood or peritoneal fluid), a therapeutic fluid (e. g. , a medication solution), or a surfactant fluid. The pumps may be configured specifically to impart low shear forces and low turbulence on the fluid as the fluid is pumped from an inlet to an outlet. Such pumps may be particularly useful in pumping fluids that may be damaged by such shear forces (e. g. , blood, and particularly heated blood, which is prone to hemolysis) or turbulence (e. g. , surfactants or other fluids that may foam or otherwise be damaged or become unstable in the presence of turbulence).

US Patent:

8366316, Feb 5, 2013

Filed:

Mar 23, 2010

Appl. No.:

12/730197

Inventors:

Dean Kamen - Bedford MA, US
N. Christopher Perry - Manchester NH, US
Jason A. Demers - Manchester NH, US
Brian Tracey - Litchfield NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

G01N 25/18

US Classification:

374 44

Abstract:

A sensor apparatus and sensor apparatus system for use in conjunction with a cassette, including a disposable or replaceable cassette. In some embodiments, the cassette includes a thermal well for permitting the sensing of various properties of a subject media. The thermal well includes a hollow housing of a thermally conductive material. In other embodiments, the cassette includes sensor leads for sensing of various properties of a subject media. The thermal well has an inner surface shaped so as to form a mating relationship with a sensing probe. The mating thermally couples the inner surface with a sensing probe. In some embodiments, the thermal well is located on a disposable portion and the sensing probe on a reusable portion.

US Patent:

8393690, Mar 12, 2013

Filed:

Aug 27, 2008

Appl. No.:

12/199055

Inventors:

Kevin L. Grant - Litchfield NH, US
Jason A. Demers - Manchester NH, US
James D. Dale - Nashua NH, US
Arun D. Chawan - Manchester NH, US
David E. Collins - Manchester NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

B01D 61/28

US Classification:

312209, 210646, 21032164, 21032169, 210175, 2101952, 21032171, 604 504, 604 609, 604 61, 604 611, 3123215

Abstract:

An enclosure for containing a portable hemodialysis unit includes a housing suitable to support components for performing hemodialysis including a dialyzer, one or more pumps to circulate blood through the dialyzer, a source of dialysate, and one or more pumps to circulate the dialysate through the dialyzer. The housing may have a front panel at which blood circuit connections and dialysate fluidic connections are located, e. g. , blood line connections for patient blood access, connections for a reagent supply, dialyzer connections for both blood flow and dialysate, etc. The enclosure may also include a pair of vertical, side-by-side doors hingedly mounted to the housing. With the doors in the closed position, access to the patient access and dialysate fluidic connections may be blocked, and the doors may allow for the retention of heat in the housing suitable for disinfection during a disinfection cycle.

US Patent:

8425471, Apr 23, 2013

Filed:

Aug 27, 2008

Appl. No.:

12/199196

Inventors:

Kevin L. Grant - Litchfield NH, US
Michael J. Wilt - Windham NH, US
Jason A. Demers - Manchester NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

A61M 5/00

US Classification:

604258, 604 8, 604410

Abstract:

A reagent supply arrangement for a hemodialysis system may include an E-prong connector having three parallel prongs with two outer prongs arranged in a common plane and a center prong arranged above the common plane, a first supply line for a first reagent connected in fluid communication with one of the outer prongs, a second supply line for a second reagent connected in fluid communication with the other of the outer prongs, a liquid line connected in fluid communication with the center prong, and a container for housing the first reagent having an inlet connected to the liquid line and an outlet connected to the first supply line for the first reagent. The E-prong connector may help prevent the improper connection to the dialysis unit, e. g. , because the prong arrangement ensures connection in only one way to the dialysis unit.

US Patent:

8459292, Jun 11, 2013

Filed:

Jun 8, 2011

Appl. No.:

13/156282

Inventors:

Michael J. Wilt - Windham NH, US
Kevin L. Grant - Litchfield NH, US
James D. Dale - Nashua NH, US
Jason A. Demers - Manchester NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

G05D 11/00

US Classification:

137100, 1375653, 417480

Abstract:

A cassette integrated system. The cassette integrated system includes a mixing cassette, a balancing cassette, a middle cassette fluidly connected to the mixing cassette and the balancing cassette and at least one pod. The mixing cassette is fluidly connected to the middle cassette by at least one fluid line and the middle cassette is fluidly connected to the balancing cassette by at least one fluid line. The at least one pod is connected to at least two of the cassettes wherein the pod is located in an area between the cassettes.

US Patent:

8499780, Aug 6, 2013

Filed:

Oct 24, 2011

Appl. No.:

13/280274

Inventors:

Michael J. Wilt - Windham NH, US
Kevin L. Grant - Litchfield NH, US
James D. Dale - Nashua NH, US
Jason A. Demers - Manchester NH, US
Brian Tracey - Litchfield NH, US

Assignee:

DEKA Products Limited Partnership - Manchester NH

International Classification:

G05D 11/00

US Classification:

137100, 1375653, 417480

Abstract:

A cassette integrated system. The cassette integrated system includes a mixing cassette, a balancing cassette, a middle cassette fluidly connected to the mixing cassette and the balancing cassette and at least one pod. The mixing cassette is fluidly connected to the middle cassette by at least one fluid line and the middle cassette is fluidly connected to the balancing cassette by at least one fluid line. The at least one pod is connected to at least two of the cassettes wherein the pod is located in an area between the cassettes.