Patents by Inventor See Hai Ng

See Hai Ng 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: 8378837
    Abstract: A method of monitoring pressure inside a fluid line and a system for implementing the method. The method is applicable to syringe pump systems. The method includes the steps of measuring a force value caused by a pressure inside the fluid line; collecting the measured force values during at least two consecutive moving time windows; calculating a slope of a best-fit line within each time window; calculating a slope difference of the slopes of the best-fit lines; comparing the slope difference with a pre-determined threshold gradient value; defining a baseline force as the detected force value when the slope difference is equal to the threshold gradient value; determining a relative force value by subtracting the baseline force from the detected force value; and, triggering an alarm if the relative force is greater than a pre-defined threshold force.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: February 19, 2013
    Assignee: Hospira, Inc.
    Inventors: YiFei Wang, Chang Liu, See Hai Ng
  • Publication number: 20100214110
    Abstract: A method of monitoring pressure inside a fluid line and a system for implementing the method. The method is applicable to syringe pump systems.
    Type: Application
    Filed: February 18, 2010
    Publication date: August 26, 2010
    Applicant: HOSPIRA, INC.
    Inventors: YiFei Wang, Chang Liu, See Hai Ng