Patents by Inventor Maurice Alan Brewer

Maurice Alan Brewer 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).

  • Introducer sheath with electrodes for use in bleed detection
    Patent number: 9700216
    Abstract: An introducer includes a sheath for introducing a catheter into a blood vessel at an insertion site and a plurality of electrodes on the sheath. The introducer also includes an impedance assessment unit connected to the electrodes. The impedance assessment unit includes a power source and a wireless transceiver and is configured to inject one of a predetermined current or voltage across a first pair of electrodes and to measure the other of the current or voltage across a second pair of electrodes. The impedance assessment unit also is configured to perform at least one: wirelessly transmit current and voltage values to an external apparatus for detection of a bleed, and compute an impedance based on the current and voltage and wirelessly transmit the computed impedance to the external apparatus for detection of the bleed.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: July 11, 2017
    Assignee: Texas Heart Institute
    Inventors: Mehdi Razavi, Christopher Alexander Arevalos, Maurice Alan Brewer
  • INTRODUCER SHEATH WITH ELECTRODES FOR USE IN BLEED DETECTION
    Publication number: 20150272451
    Abstract: An introducer includes a sheath for introducing a catheter into a blood vessel at an insertion site and a plurality of electrodes on the sheath. The introducer also includes an impedance assessment unit connected to the electrodes. The impedance assessment unit includes a power source and a wireless transceiver and is configured to inject one of a predetermined current or voltage across a first pair of electrodes and to measure the other of the current or voltage across a second pair of electrodes. The impedance assessment unit also is configured to perform at least one: wirelessly transmit current and voltage values to an external apparatus for detection of a bleed, and compute an impedance based on the current and voltage and wirelessly transmit the computed impedance to the external apparatus for detection of the bleed.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 1, 2015
    Inventors: Mehdi RAZAVI, Christopher Alexander AREVALOS, Maurice Alan BREWER
  • Introducer sheath with electrodes
    Patent number: 9078627
    Abstract: An introducer comprise a sheath for introducing a catheter into a blood vessel, a plurality of electrodes on the sheath, and an impedance assessment unit provided on the sheath and connected to the electrodes. The impedance assessment unit fixes one of a current or voltage across a first pair of the electrodes and measures the other of the current or voltage across a second pair of electrodes.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: July 14, 2015
    Assignee: TEXAS HEART INSTITUTE
    Inventors: Mehdi Razavi, Christopher Alexander Arevalos, Maurice Alan Brewer
  • INTRODUCER SHEATH WITH ELECTRODES
    Publication number: 20120220848
    Abstract: An introducer comprise a sheath for introducing a catheter into a blood vessel, a plurality of electrodes on the sheath, and an impedance assessment unit provided on the sheath and connected to the electrodes. The impedance assessment unit fixes one of a current or voltage across a first pair of the electrodes and measures the other of the current or voltage across a second pair of electrodes.
    Type: Application
    Filed: May 10, 2012
    Publication date: August 30, 2012
    Applicant: TEXAS HEART INSTITUTE
    Inventors: Mehdi Razavi, Christopher Alexander Arevalos, Maurice Alan Brewer