Patents by Inventor Clive Griffiths

Clive Griffiths 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).

  • Patent number: 10682454
    Abstract: An apparatus for performing haemodialysis on a patient comprises: first blood transfer means (3) for selectively withdrawing blood from a patient and storing it in a first storage portion (5); second blood transfer means (11) for removing filtered blood from a filtration device (7) and storing it in a second storage portion (13); and a fluid measurement system (51a, 51b) for periodically measuring the respective volumes of blood in the first and second storage portions; adding the volume of blood in the first storage portion to the volume of blood in the second storage portion at that time in order to calculate the total volume of blood within the first and second storage portions at that time; and comparing the total measured volumes of blood within the first and second storage portions measured over a predetermined time interval to calculate the volume of fluid removed from the blood during that predetermined time interval.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: June 16, 2020
    Assignee: The Newcastle Upon Tyne Hospitals NHS Foundation Trust
    Inventors: Malcolm Coulthard, Michael Whitaker, Clive Griffiths, Michael Drinnan
  • Publication number: 20190002809
    Abstract: Aspects of the present invention relate to apparatus for use in cell and tissue culture techniques. Particularly, although not exclusively, embodiments of the present invention relate to apparatus which contribute to providing a dynamic cell culture environment. Also disclosed herein are methods for culturing cells and/or tissues, together with in vitro methods of testing drug efficacy as well as other subject matter.
    Type: Application
    Filed: October 21, 2016
    Publication date: January 3, 2019
    Applicant: University of Newcastle Upon Tyne
    Inventors: Fiona OAKLEY, Lee BORTHWICK, Clive GRIFFITHS, Michael DRINNAN
  • Publication number: 20180103856
    Abstract: A blood pressure measurement system is able to measure actual blood pressures. More specifically, the blood pressure sensor or sphygmomanometer is able to detect high frequencies that exist only between systole and diastole, and thus identify aspects such as micro-pulses associated with the opening and closing of an artery to achieve accurate blood pressure readings.
    Type: Application
    Filed: April 15, 2016
    Publication date: April 19, 2018
    Inventors: Alan MURRAY, Dingchang ZHENG, Clive GRIFFITHS, Chengyu LIU
  • Publication number: 20140296746
    Abstract: A urine flow measuring apparatus that includes a container for receiving urine, measuring means for measuring the weight and/or volume of urine received by the container, and memory means for recording the weight and/or volume measured by the measuring means. Through a controller the measuring means: continually measures the weight and/or volume of the container at regular sampling intervals; and at each sampling interval, identifies if a positive change in the weight and/or volume of the container has occurred and then compares results within a data set, the data set including a result from the current sampling interval and results from all the sampling intervals during a given period. If a number of sampling intervals indicating a positive change in the weight and/or volume is above a certain threshold, the memory means is instructed to begin recording data, else the memory means is instructed to cease recording data.
    Type: Application
    Filed: August 9, 2012
    Publication date: October 2, 2014
    Applicant: Newcastle-upon-Tyne Hospitals NHS Foundation Trust
    Inventors: Michael Whitaker, Michael Drinnan, Alison Bray, Clive Griffiths, Robert Beckwith
  • Publication number: 20140110319
    Abstract: An apparatus for performing haemodialysis on a patient comprises: first blood transfer means (3) for selectively withdrawing blood from a patient and storing it in a first storage portion (5); second blood transfer means (11) for removing filtered blood from a filtration device (7) and storing it in a second storage portion (13); and a fluid measurement system (51a, 51b) for periodically measuring the respective volumes of blood in the first and second storage portions; adding the volume of blood in the first storage portion to the volume of blood in the second storage portion at that time in order to calculate the total volume of blood within the first and second storage portions at that time; and comparing the total measured volumes of blood within the first and second storage portions measured over a predetermined time interval to calculate the volume of fluid removed from the blood during that predetermined time interval.
    Type: Application
    Filed: June 14, 2012
    Publication date: April 24, 2014
    Applicant: THE NEWCASTLE UPON TYNE HOSPITALS NHS FOUNDATION TRUST
    Inventors: Malcolm Coulthard, Michael Whitaker, Clive Griffiths, Michael Drinnan
  • Patent number: 8620412
    Abstract: An apparatus that is able to detect the position of a catheter. The apparatus utilizes a catheter filled with electrically-conductive physiological saline and a connector for establishing an electrical connection between the saline of the catheter and an input of a controller. The controller includes at least one output connectable to a standard ECG lead connector, wherein the controller includes circuitry for generating a low impedance output signal. The controller provides an output which replicates the input a standard ECG patient lead connector is configured to receive. The apparatus provides a more convenient and cost effective solution for providing specialized ECG functions without having to replace a hospital's existing ECG beside monitoring equipment.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: December 31, 2013
    Assignee: The Newcastle Upon Tyne Hospitals NHS Trust
    Inventors: Clive Griffiths, Mike Whitaker
  • Publication number: 20100292764
    Abstract: A device (100) and method for achieving localised hypothermia during laparoscopic surgery comprises a sheath portion (101) in the form of a flexible bag-like shape which is shaped and sized so that it substantially surrounds the organ of interest in use. The sheath portion (101) comprises walls, each consisting of at least a first inner layer and a second outer layer which define a space therebetween into which catheters (104a, b) deliver and remove cooled fluid to provide a cooling effect to the organ.
    Type: Application
    Filed: April 26, 2007
    Publication date: November 18, 2010
    Applicant: The Newcastle Upon Tyne Hospitals NHS Trust
    Inventors: Naeem Soomro, Clive Griffiths, Elaine Colechin, John Riddle
  • Publication number: 20100152596
    Abstract: Apparatus for Detecting the Position of a Catheter Apparatus for detecting the position of a catheter comprising a catheter, electrically conductive means associated with the catheter, a connector for establishing an electrical connection between the electrically conductive means associated with the catheter and an output of the connector and a controller having at least one output connectable to an ECG patient connector, wherein the controller includes at least one input and the said at least one input includes an electrical connection from the controller to the output of the connector and wherein the controller includes means for generating a low impedance output signal.
    Type: Application
    Filed: April 23, 2008
    Publication date: June 17, 2010
    Applicant: THE NEWCASTLE UPON TYNE HOSPITALS NHS TRUST
    Inventors: Clive Griffiths, Mike Whitaker
  • Patent number: 7381854
    Abstract: A process for the selective hydrogenation of alpha-methyl-styrene (AMS) to cumene in a two catalyst system is disclosed. A crude cumene feed stream containing up to 10% AMS by weight is supplied to the first reaction zone 112 and mixed with hydrogen in a first catalyst bed 118 containing a nickel catalyst, converting from 70 to 95 percent of the AMS to cumene. Cumene and remaining AMS are separated from hydrogen in a liquid take off tray 120. The first reaction zone 112 effluent is supplied to a second reaction zone 114, where the effluent and hydrogen gas are mixed in a second catalyst bed 126 containing a noble-metal catalyst to substantially convert any remaining AMS to cumene. Cumene is collected, separated from the hydrogen, and can be resupplied to the hydrogenation reactor 110, or supplied as feed to a phenol synthesis loop.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: June 3, 2008
    Assignee: Kellogg Brown & Root LLC
    Inventors: Ronald Birkhoff, Clive Griffiths, Kiran Shah, Anand Subramanian
  • Publication number: 20060135830
    Abstract: A process for the selective hydrogenation of alpha-methyl-styrene (AMS) to cumene in a two catalyst system is disclosed. A crude cumene feed stream containing up to 10% AMS by weight is supplied to the first reaction zone 112 and mixed with hydrogen in a first catalyst bed 118 containing a nickel catalyst, converting from 70 to 95 percent of the AMS to cumene. Cumene and remaining AMS are separated from hydrogen in a liquid take off tray 120. The first reaction zone 112 5effluent is supplied to a second reaction zone 114, where the effluent and hydrogen gas are mixed in a second catalyst bed 126 containing a noble-metal catalyst to substantially convert any remaining AMS to cumene. Cumene is collected, separated from the hydrogen, and can be resupplied to the hydrogenation reactor 110, or supplied as feed to a phenol synthesis loop.
    Type: Application
    Filed: December 20, 2004
    Publication date: June 22, 2006
    Applicant: KELLOGG BROWN AND ROOT, INC.
    Inventors: Ronald Birkhoff, Clive Griffiths, Kiran Shah, Anand Subramanian