Patents by Inventor Wei-Jiun Liu

Wei-Jiun Liu 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: 11089971
    Abstract: Apparatus and methods for the measurement, control, or both, of thermodilution injectate flow for calculation of transpulmonary thermodilution parameters. An injectate delivery system includes a syringe for holding an injectate and a conduit configured at one end to be connected to a catheter. A flow measurement device is interposed in the conduit to generate a signal for determining the flow rate of the fluid from the syringe to the catheter. A processor receives the signal from the flow measurement device and calculates the injectate volume to be used as input for calculating a transpulmonary thermodilution parameter such as cardiac output. A GUI is provided to direct a user on whether the injection rate is too fast or too slow. Rather than measuring or calculating flow rate, a system may include a constant flow valve to provide a constant flow rate from the syringe.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: August 17, 2021
    Assignee: Edwards Lifesciences Corporation
    Inventors: Alexander H. Siemons, Wei-Jiun Liu
  • Publication number: 20180325391
    Abstract: Embodiments of the invention disclosed herein relate generally to a cable hub apparatus. The cable hub apparatus is configured to communicate physiological data for a patient to a patient monitoring device. The cable hub apparatus includes: a plurality of analog sensor connectors configured to receive analog physiological sensor data for the patient; a plurality of digital sensor connectors configured to received digital physiological sensor data for the patient; a controller to control collecting the received physiological sensor data; and a digital interface configured to communicate through a single cable the received physiological sensor data to the patient monitoring device.
    Type: Application
    Filed: November 18, 2015
    Publication date: November 15, 2018
    Inventors: Brandon S. Weiler, Ammar Manghi, Christopher Ikei, Wei-Jiun Liu, John A. Frazier, Ramin Mousavi, Richard B. Paul, Sandarsh Mohan Kumar, Shaun Fetherston
  • Publication number: 20170265756
    Abstract: Apparatus and methods for the measurement, control, or both, of thermodilution injectate flow for calculation of transpulmonary thermodilution parameters. An injectate delivery system includes a syringe for holding an injectate and a conduit configured at one end to be connected to a catheter. A flow measurement device is interposed in the conduit to generate a signal for determining the flow rate of the fluid from the syringe to the catheter. A processor receives the signal from the flow measurement device and calculates the injectate volume to be used as input for calculating a transpulmonary thermodilution parameter such as cardiac output. A GUI is provided to direct a user on whether the injection rate is too fast or too slow. Rather than measuring or calculating flow rate, a system may include a constant flow valve to provide a constant flow rate from the syringe.
    Type: Application
    Filed: October 21, 2015
    Publication date: September 21, 2017
    Applicant: Edwards Lifesciences Corporation
    Inventors: Alexander H. Siemons, Wei-Jiun Liu