Patents by Inventor Ignacio Valenzuela

Ignacio Valenzuela 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: 11583201
    Abstract: The invention consists of a device to evaluate hemodynamic response generated by the spinal cord in response to a suprasensorial stimulus applied to a peripheral nerve (medium or posterior tibial) by the use of functional near-infrared spectroscopy (fNIRS). The device consists of 3 main components, an electrical stimulator, an optical recording unit and a signal processing and control module. The device allows non-invasive, comfortable, harmless, portable, home-based, and low-cost evaluation of changes in local hemodynamic parameters in response to neuronal activation of the spinal cord by electrical stimulation of a peripheral nerve. The invention also includes a corresponding method of using the device and monitoring the spinal function.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: February 21, 2023
    Assignee: PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE
    Inventors: Felipe Ignacio Valenzuela Beck, Sergio Andres Uribe Arancibia, Antonio Alejandro Eblen Zajjur, Ranganatha Sitaram, Mohit Rana
  • Publication number: 20210052172
    Abstract: The invention consists of a device to evaluate hemodynamic response generated by the spinal cord in response to a suprasensorial stimulus applied to a peripheral nerve (medium or posterior tibial) by the use of functional near-infrared spectroscopy (fNIRS). The device consists of 3 main components, an electrical stimulator, an optical recording unit and a signal processing and control module. The device allows non-invasive, comfortable, harmless, portable, home-based, and low-cost evaluation of changes in local hemodynamic parameters in response to neuronal activation of the spinal cord by electrical stimulation of a peripheral nerve. The invention also includes a corresponding method of using the device and monitoring the spinal function.
    Type: Application
    Filed: December 27, 2018
    Publication date: February 25, 2021
    Inventors: Felipe Ignacio VALENZUELA BECK, Sergio Andres URIBE ARANCIBIA, Antonio Alejandro EBLEN ZAJJUR, Ranganatha SITARAM, Mohit RANA
  • Patent number: 5892862
    Abstract: A fiber optic switching system which includes an optical switch having a movable actuator and a light fiber coupled to the actuator which terminates at an end surface thereof for conducting light from a light source to the optical switch mechanism. A flexible reflective film whose reflectivity is conditioned to provide at least two different reflective surfaces is positioned such that an end surface of the actuator abuts the film throughout its movement from one position to another. A detector detects light reflected from the film. The actuator is movable so as to direct light from the light fiber from the one reflective surface of the film to another and the detector detects light reflected from the film so as to determine which reflective surface of the film from which light has been reflected.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: April 6, 1999
    Inventors: John S. Kidder, Jonathan Scott, Malcolm Chaddock, David Todd, Ignacio Valenzuela, Martin Poulin, Ronald Ninnis
  • Patent number: 5487756
    Abstract: An implantable cuff having an improved closure is disclosed. The closure has a set of small interdigitated tubes lying along the edges of a longitudinal slit opening in the cuff. A rod-like locking member is inserted through the interdigitated tubes to lock the cuff closed. A flexible flap attached to the inside of the cuff electrically and mechanically isolates the interior of the cuff from the exterior. The cuff has particular application as a nerve cuff for recording electrical nerve activity and for electrically stimulating nerves.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: January 30, 1996
    Assignee: Simon Fraser University
    Inventors: Klaus Kallesoe, Joaquin A. Hoffer, Kevin Strange, Ignacio Valenzuela