Patents by Inventor Alexandre Ledoux

Alexandre Ledoux 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).

  • Instrumented mobility assistance device
    Patent number: 7826983
    Abstract: Various implementations are disclosed for an instrumented mobility assistance device, such as an instrumented walker. The device includes an attached sensor that is operable to convert an operational action of a user of the mobility assistance device into a sensor signal. A use analyzer is operable to relate the sensor signal to a contact attribute associated with a contact of the user of the mobility assistance device with an underlying surface. The use analyzer is further operable to determine a gait characteristic of the user, based on the contact attribute. The sensor may include a force or moment sensor. The contact attribute may include a foot-initial contact, or a foot-off contact. In this way, gait characteristics of the user may be determined during normal operation of the instrumented device. Also, the sensor may be used to determine a stability measure associated with the device.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: November 2, 2010
    Inventors: Majd Alwan, Glenn S. Wasson, Pradip N. Sheth, Alexandre Ledoux, Cunjun Huang
  • Instrumented mobility assistance device
    Publication number: 20070233403
    Abstract: Various implementations are disclosed for an instrumented mobility assistance device, such as an instrumented walker. The device includes an attached sensor that is operable to convert an operational action of a user of the mobility assistance device into a sensor signal. A use analyzer is operable to relate the sensor signal to a contact attribute associated with a contact of the user of the mobility assistance device with an underlying surface. The use analyzer is further operable to determine a gait characteristic of the user, based on the contact attribute. The sensor may include a force or moment sensor. The contact attribute may include a foot-initial contact, or a foot-off contact. In this way, gait characteristics of the user may be determined during normal operation of the instrumented device. Also, the sensor may be used to determine a stability measure associated with the device.
    Type: Application
    Filed: January 5, 2007
    Publication date: October 4, 2007
    Inventors: Majd Alwan, Glenn Wasson, Pradip Sheth, Alexandre Ledoux, Cunjun Huang