Patents by Inventor Andrew William Esper

Andrew William Esper 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).

  • System and method for determining an amount of degradation of a medical device battery
    Patent number: 10677853
    Abstract: A method, a battery, and a system determine an amount of degradation of the battery. The method includes providing an autoclaveable lithium battery for a medical device, receiving a charging signal from a charging device, and initiating a charging cycle to charge a cell of the battery based on the charging signal. The charging cycle includes a constant current phase and a constant voltage phase. The method also includes monitoring a current provided to the cell during at least a portion of the constant voltage phase, calculating a current taper time based on the current provided during the constant voltage phase, and determining an amount of degradation of the battery based on the current taper time.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: June 9, 2020
    Assignee: Stryker Corporation
    Inventors: Sean Christopher Laughery, Andrew William Esper
  • SYSTEM AND METHOD FOR DETERMINING AN AMOUNT OF DEGRADATION OF A MEDICAL DEVICE BATTERY
    Publication number: 20180372806
    Abstract: A method, a battery, and a system determine an amount of degradation of the battery. The method includes providing an autoclaveable lithium battery for a medical device, receiving a charging signal from a charging device, and initiating a charging cycle to charge a cell of the battery based on the charging signal. The charging cycle includes a constant current phase and a constant voltage phase. The method also includes monitoring a current provided to the cell during at least a portion of the constant voltage phase, calculating a current taper time based on the current provided during the constant voltage phase, and determining an amount of degradation of the battery based on the current taper time.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 27, 2018
    Applicant: Stryker Corporation
    Inventors: Sean Christopher Laughery, Andrew William Esper