Patents by Inventor Ngak Hwee Chua

Ngak Hwee Chua 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: 8657753
    Abstract: A method, system and computer readable medium for deriving central aortic systolic pressure by reversing the order of a set of predetermined number of blood pressure measurements to obtain a reversed blood pressure set; averaging the reversed blood pressure set such that the average set represents a moving average waveform; overlaying the reversed blood pressure set and the moving average waveform; identifying a point of intersection on the reversed arterial waveform and the moving average waveform, and setting the central aortic systolic pressure as a reversed blood pressure value in the reversed blood pressure set nearest to the point of intersection.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: February 25, 2014
    Assignee: Healthstats International Pte Ltd
    Inventors: Choon Meng Ting, Ngak Hwee Chua, Wee Leng Peh
  • Patent number: 8469895
    Abstract: A method of deriving central aortic systolic pressure comprises (a) creating a set having a predetermined number of blood pressure measurements, the set representative of an arterial waveform; (b) determining an integer interval value; (c) averaging a series of consecutive blood pressure measurement readings in the set equal to the integer interval value commencing from the fth blood pressure measurement in the set; (d) storing the averaged value in a central aortic systolic pressure set; and (e) setting the central aortic systolic pressure as the highest value in the central aortic pressure set. Steps (c) and (d) are repeated with the value of f being incremented by 1 each time until the value of f plus the integer interval value equals the predetermined number of blood pressure measurements in the set.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: June 25, 2013
    Assignee: Healthstats International Pte Ltd
    Inventors: Choon Meng Ting, Ngak Hwee Chua
  • Publication number: 20110230773
    Abstract: A method, system and computer readable medium for deriving central aortic systolic pressure by reversing the order of a set of predetermined number of blood pressure measurements to obtain a reversed blood pressure set; averaging the reversed blood pressure set such that the average set represents a moving average waveform; overlaying the reversed blood pressure set and the moving average waveform; identifying a point of intersection on the reversed arterial waveform and the moving average waveform, and setting the central aortic systolic pressure as a reversed blood pressure value in the reversed blood pressure set nearest to the point of intersection.
    Type: Application
    Filed: December 5, 2008
    Publication date: September 22, 2011
    Applicant: HEALTHSTATS INTERNATIONAL PTE LTD
    Inventors: Choon Meng Ting, Ngak Hwee Chua, Wee Leng Peh
  • Publication number: 20080306393
    Abstract: A method of deriving central aortic systolic pressure comprises (a) creating a set having a predetermined number of blood pressure measurements, the set representative of an arterial waveform; (b) determining an integer interval value; (c) averaging a series of consecutive blood pressure measurement readings in the set equal to the integer interval value commencing from the fth blood pressure measurement in the set; (d) storing the averaged value in a central aortic systolic pressure set; and (e) setting the central aortic systolic pressure as the highest value in the central aortic pressure set. Steps (c) and (d) are repeated with the value of f being incremented by 1 each time until the value of f plus the integer interval value equals the predetermined number of blood pressure measurements in the set.
    Type: Application
    Filed: September 24, 2007
    Publication date: December 11, 2008
    Applicant: Healthstats International Pte Ltd
    Inventors: Choon Meng Ting, Ngak Hwee Chua
  • Patent number: 6918879
    Abstract: A device for continuously monitoring a user's arterial blood pressure has a sensor adapted to continuously detect the blood pressure and to generate signals representative thereof by contact with an external surface of the user's body at a location adjacent an artery. The sensor is securely held in operable contact with the user's body at the location. A microprocessor interprets the signals generated by the sensor to determine the actual arterial blood pressure. The sensor includes a projecting portion for detecting and transmitting changes in blood pressure, wherein the projecting portion is adapted to effect at least partial occlusion of the artery at the location.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: July 19, 2005
    Assignee: Healthstats International Pte. Ltd.
    Inventors: Choon Meng Ting, Ngak Hwee Chua
  • Publication number: 20030004421
    Abstract: A device for continuously monitoring a user's arterial blood pressure has a sensor adapted to continuously detect the blood pressure and to generate signals representative thereof by contact with an external surface of the user's body at a location adjacent an artery. The sensor is securely held in operable contact with the user's body at the location. A microprocessor interprets the signals generated by the sensor to determine the actual arterial blood pressure. The sensor includes a projecting portion for detecting and transmitting changes in blood pressure, wherein the projecting portion is adapted to effect at least partial occlusion of the artery at the location.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 2, 2003
    Applicant: HEALTHSTATS INTERNATIONAL PTE LTD
    Inventors: Choon Meng Ting, Ngak Hwee Chua
  • Patent number: 6443906
    Abstract: A device for continuously monitoring a user's arterial blood pressure has a sensor adapted to continuously detect the blood pressure and to generate signals representative thereof by contact with an external surface of the user's body at a location adjacent an artery. The sensor is securely held in operable contact with the user's body at the location. A microprocessor interprets the signals generated by the sensor to determine actual arterial blood pressure. The sensor includes a projecting portion for detecting and transmitting changes in blood pressure, wherein the projecting portion is adapted to effect at least partial occlusion of the artery at the location.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: September 3, 2002
    Assignee: Healthstats International PTE Ltd.
    Inventors: Choon Meng Ting, Ngak Hwee Chua