David M Cummings

US Patent:

6389013, May 14, 2002

Filed:

Mar 31, 1998

Appl. No.:

09/052699

Inventors:

Dwight W. Doss - Richardson TX
Raymond L. Hogg - Wylie TX
David W. Wynn - Garland TX
Michael K. Blanchard - Plano TX
Byron T. Butterfield - Richardson TX
David C. Cummings - Richardson TX

Assignee:

Alcatel USA Sourcing, L.P. - Plano TX

International Classification:

H04L 1250

US Classification:

370364, 370419, 370225

Abstract:

A method of providing a back up communications link for control messages within a delivery unit. The primary means of transport for both network data and control data within the delivery unit is by means of ingress and egress buses between application modules of the delivery unit. However, control messages from a unit controller can also be delivered by means of a separate link, typically to a bus control module.

US Patent:

8330579, Dec 11, 2012

Filed:

Jul 5, 2007

Appl. No.:

11/773822

Inventors:

Daniel Kneip - Anna TX, US
David West - Richardson TX, US
David Cummings - Richardson TX, US
Patrick Lee - Long Grove IL, US
Randy Murphy - Pleasant Prairie WI, US

Assignee:

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

International Classification:

H04Q 5/22

US Classification:

340 101, 604 29

Abstract:

A medical fluid delivery system includes a dialysis instrument; a disposable pumping cassette operable with a pumping actuator of the dialysis instrument, the disposable cassette including or connected fluidly to a plurality of first connectors; a plurality of second connectors configured to interface with the first connectors, each second connector associated with a radio frequency (“RFID”) tag; and electronics configured to read the RFID tags via a plurality of antennae and to identify that each of the second connectors is positioned properly with respect to a proper one of the first connectors.

US Patent:

20120191059, Jul 26, 2012

Filed:

Jul 8, 2010

Appl. No.:

13/384126

Inventors:

David Charles Cummings - Richardson TX, US
Alan P. Halbert - Irving TX, US
Seralaathan Hariharesan - Flower Mound TX, US
James Allen Higgins - Plano TX, US
Brian Highley - Keller TX, US
Michael Rueben Jedwab - Lausanne, CH
Russell Paul Meyer - Plano TX, US
Andrew Peter Nelson - Dallas TX, US
David Woodruff West - McKinney TX, US

Assignee:

NESTEC S.A. - Vevey

International Classification:

A61M 5/168
A61M 39/28
A61M 5/142
A61M 5/00

US Classification:

604500, 604257, 604246, 604250, 604151

Abstract:

The present disclosure provides cassettes and methods of using same for the delivery of fluids to a patient using fluid delivery systems. In a general embodiment, the cassettes of the present disclosure include a flexible tube, a housing having a recessed area and first and second ends for holding the flexible tube, and at least two additional components including, for example, different sensors, false reading components for sensors, anti-flow valve means, insertion guides, directional indicators, latch mechanisms, kink-prevention notches, etc. Such additional components provide the cassettes of the present disclosure with several advantages including, for example, quality control, efficiency of use, cost effectiveness, and safety of use.

US Patent:

20120280130, Nov 8, 2012

Filed:

Jul 8, 2010

Appl. No.:

13/391345

Inventors:

David Charles Cummings - Richardson TX, US
Andrew Peter Nelson - Dallas TX, US
Russell Paul Meyer - Plano TX, US

Assignee:

NESTEC S.A. - Vevey

International Classification:

G01J 5/08

US Classification:

250353, 250395

Abstract:

Occlusion sensor systems and methods of using the occlusion sensor systems are provided. In a general embodiment, the present disclosure provides a sensor device includes a tube and an infra-red reflective sensor comprising an infra-red light emitter and an infra-red photo-transistor receiver or photo-diode. The infra-red reflective sensor and the infra-red phototransistor receiver or photo-diode are positioned at or near the tube so that an infra-red light can be transmitted to a portion of the tube and at least a portion of the infra-red light reflected off the portion of the tube can be detected by the infra-red phototransistor receiver or photo-diode.

US Patent:

62400878, May 29, 2001

Filed:

Mar 31, 1998

Appl. No.:

9/052182

Inventors:

David C. Cummings - Richardson TX
Alan A. Jones - Wylie TX

Assignee:

Alcatel USA Sourcing, L.P. - Plano TX

International Classification:

H04J 317

US Classification:

370360

Abstract:

A delivery unit for interfacing telecommunications media to a switching matrix. The delivery unit functions are partitioned into a number of application modules. Each application module has a controller that handles control messages. Each controller is built from the same circuitry and operates in the same manner so as to provide a common software platform for originating and terminating control messages within the delivery unit.