David C Field

US Patent:

6462339, Oct 8, 2002

Filed:

Sep 20, 2000

Appl. No.:

09/665845

Inventors:

Christopher A. Michaluk - Gilbertsville PA
David P. Field - Pullman WA

Assignee:

Cabot Corporation - Boston MA

International Classification:

G01N 23203

US Classification:

250310, 250307, 250311

Abstract:

A method for quantifying the texture homogeneity of a polycrystalline material is described. The method involves selecting a reference pole orientation; scanning in increments a cross-section of the polycrystalline material having a thickness with scanning orientation imaging microscopy or other measuring technique to obtain actual pole orientations of a multiplicity of grains throughout the cross-section of the polycrystalline material. The orientation differences between the reference pole orientation and actual pole orientations of a multiplicity of grains is then determined. A value of misorientation from the reference pole orientation at each grain measured throughout the thickness is then assigned. The average misorientation of each measured increment throughout the thickness is then determined. A texture gradient and/or texture banding can then be obtained by determining the first and/or second derivative, respectively, of the average misorientation of each measured increment through the thickness of the sample used for evaluation.

US Patent:

D597673, Aug 4, 2009

Filed:

Jan 8, 2008

Appl. No.:

29/299988

Inventors:

David C. Field - Snellville GA, US

Assignee:

Southern Spine, LLC - Macon GA

International Classification:

2403

US Classification:

D24155

US Patent:

7896834, Mar 1, 2011

Filed:

Aug 7, 2007

Appl. No.:

11/835095

Inventors:

Richard G. Cartledge - Fort Lauderdale FL, US
David C. Field - Snellville GA, US
William J. Jaecklein - Ormond Beach FL, US
Michael L. Koltz - Jacksonville FL, US
Bradford J. Rainier - DeLand FL, US
Roland T. Stafford - Ormond Beach FL, US

Assignee:

Smisson-Cartledge Biomedical LLC - Macon GA

International Classification:

A61M 31/00

US Classification:

604 67

Abstract:

A pump system selectably controls the temperature, flow rate, flow volume, and flow pressure of a fluid being infused into a patient's body. The pump system includes a cartridge and components that removably connect with a pump housing and corresponding components, providing simple attachment of the cartridge to the pump housing. The pump housing includes a pressure sensor, a bubble detector, and a temperature sensor on a first side of the pump housing, and an engaging actuator and a central controller. The cartridge includes on a first side a heat exchanger, a pressure receptor correspondingly aligned with the pressure sensor, and a detector interface correspondingly aligned with the bubble detector and temperature sensor. Upon aligning the cartridge with the pump housing and actuating the engaging actuator, the pressure receptor communicates with the pressure sensor and the detector interface aligns with the bubble detector and temperature sensor.

US Patent:

7975491, Jul 12, 2011

Filed:

Aug 7, 2007

Appl. No.:

11/835125

Inventors:

Richard G. Cartledge - Fort Lauderdale FL, US
David C. Field - Snellville GA, US
Michael L. Koltz - Jacksonville FL, US
Frederick J. York - Longwood FL, US

Assignee:

Smisson-Cartledge Biomedical LLC - Macon GA

International Classification:

F25B 21/02

US Classification:

62 33, 62 32, 165185

Abstract:

A heat exchange system selectably controls the temperature of a fluid being delivered to a patient's body by a pump device. The heat exchange system includes a thermal element and a heat exchanger that is removably coupled under pressure to the thermal element. The heat exchanger includes a first half made from thermally conductive material that correspondingly mates with the thermal element, a second half made from thermally conductive material opposite the first half, and an internal heat exchange zone existing between the first half and the second half, wherein fluid flows therethrough. The thermal element of the heat exchange system may controllably and safely warm and/or cool the fluid prior to delivery.

US Patent:

8057521, Nov 15, 2011

Filed:

Jun 5, 2006

Appl. No.:

11/422199

Inventors:

David C. Field - Snellville GA, US
Paul Gombar - Winder GA, US
Rich Griffith - Covington GA, US

Assignee:

Southern Spine, LLC - Macon GA

International Classification:

A61B 17/56
A61B 17/58
A61B 17/80
A61B 17/88
A61F 2/30

US Classification:

606288, 606 71, 606281

Abstract:

The present invention discloses a device and method to establish and maintain bone stabilization and enhance post-operative healing in a surgical site, such as the cervical spine of a patient, with reduced risk of erosion or other injury to adjacent anatomic structures from extrusion of surgical fasteners, such as bone screws. The surgical stabilization system according to the present invention provides for the secure plating of structures such as adjacent vertebral bodies with allowance for selective postoperative motion of the surgical fasteners used to secure the plate. Such motion imparts benefit from increased translational response and remodeling in the course of bone healing, thus resulting in strengthened fusion.

US Patent:

8109906, Feb 7, 2012

Filed:

Aug 7, 2007

Appl. No.:

11/835132

Inventors:

Richard G. Cartledge - Fort Lauderdale FL, US
David C. Field - Snellville GA, US
Frederick J. York - Longwood FL, US

Assignee:

Smisson-Cartledge Biomedical LLC - Macon GA

International Classification:

A61M 1/00
A61M 37/00
F04B 43/08
F04B 43/12
F04B 43/06

US Classification:

604122, 604131, 4174772

Abstract:

A pump system simply and selectably controls the temperature, flow rate, flow volume, and flow pressure of a fluid being infused into a patient's body. The pump system a includes a central controller and user inputs that allow for simple selection and efficient operation of the pump system, which includes manually or automatically priming the pump system to remove air, selectably controlling and rapidly adjusting the flow rate over a wide range, selectably and safely controlling the pump system temperature controls, and selectably controlling the flow pressure during delivery. The pump system includes a pump housing with a central controller and a cartridge with infusion tubing removably coupled to the pump housing.

US Patent:

8360737, Jan 29, 2013

Filed:

Aug 7, 2007

Appl. No.:

11/835118

Inventors:

Richard G. Cartledge - Fort Lauderdale FL, US
David C. Field - Snellville GA, US
Frederick J. York - Longwood FL, US

Assignee:

Smisson-Cartledge Biomedical LLC - Macon GA

International Classification:

F04B 49/06
F04B 43/08
F25B 21/02

US Classification:

417 441, 4174772, 62 33, 165185

Abstract:

A pump system selectably and dynamically controls the flow rate of a fluid being delivered to a patient's body over a wide range of flow rates. The pump system includes an infusion tubing, a pumping mechanism, a motor drive assembly in mechanical communication with the pumping mechanism, a user input control, and an electronic controller in electrical communication with and at least partially controlling the motor drive assembly. The electronic controller include a digital signal processing controller in electrical communication with the motor drive assembly that is configured to receive a signal from the user input control and to cause power to be supplied to the motor drive assembly in response at least partially to the signal from the user input control. The pump system may selectably deliver fluid at rates from about 1 milliliter per hour to at least about 3000 milliliters per minute.

US Patent:

8372123, Feb 12, 2013

Filed:

Dec 10, 2007

Appl. No.:

11/953557

Inventors:

David C. Field - Snellville GA, US
Paul Gombar, Jr. - Winder GA, US
Richard Griffith - Covington GA, US
Joseph Suarez - Atlanta GA, US
Brandi Bohleber - Macon GA, US

Assignee:

Trimax Medical Management, Inc. - Macon GA

International Classification:

A61B 17/58

US Classification:

606280, 606246

Abstract:

A sternal closure device is provided, comprising a first plate having a bone fixation region with at least one countersunk aperture for receiving a fastening means for affixing the first plate to one side of the sternum, and a locking region with at least one protruding aligning member; a second plate having a bone fixation region with at least one countersunk aperture for receiving a fastening means for affixing the second plate to the opposite side of the sternum, and a locking region dimensioned to contact at least a portion of the locking region of the first plate; and a rotating member that engages with the aligning member(s) on the first plate for holding the first and second plates together to secure the opposite sides of the sternum. The first and second plates can be separated by reversibly disengaging the rotating member from the aligning member(s).