Patents by Inventor Randall Jeffrey Krohn

Randall Jeffrey Krohn 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).

  • IMPEDANCE BOOTSTRAP CIRCUIT FOR AN INTERFACE OF A MONITORING DEVICE
    Publication number: 20190029548
    Abstract: An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit.
    Type: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventor: Randall Jeffrey KROHN
  • Impedance bootstrap circuit for an interface of a monitoring device
    Patent number: 10117591
    Abstract: An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: November 6, 2018
    Assignee: Stryker Corporation
    Inventor: Randall Jeffrey Krohn
  • Impedance Bootstrap Circuit for an Interface of a Monitoring Device
    Publication number: 20160066806
    Abstract: An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit.
    Type: Application
    Filed: October 14, 2015
    Publication date: March 10, 2016
    Applicant: STRYKER CORPORATION
    Inventor: Randall Jeffrey Krohn
  • Impedance bootstrap circuit for an interface of a monitoring device
    Patent number: 9190966
    Abstract: An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: November 17, 2015
    Assignee: STRYKER CORPORATION
    Inventor: Randall Jeffrey Krohn
  • INTEGRATED PORTABLE ANESTHESIA AND SEDATION MONITORING APPARATUS
    Publication number: 20140228651
    Abstract: A system and method for performing monitoring of anesthesia and sedation in a patient includes a patient sensor integrating EEG, pulse oximetry, ECG, and AEP signal inputs, integrated analog hardware, digital hardware, and a digital signal processing system that executes a selected algorithm to process received signals representative of a patient's condition, and which generates an index value associated with said patient condition.
    Type: Application
    Filed: April 18, 2014
    Publication date: August 14, 2014
    Applicant: Brainscope Company, Inc.
    Inventors: Elvir Causevic, Robert Hedges, Randall Jeffrey Krohn, Christian Christiansen, Ralph Walden
  • Impedance Bootstrap Circuit for an Interface of a Monitoring Device
    Publication number: 20130328627
    Abstract: An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit.
    Type: Application
    Filed: May 22, 2013
    Publication date: December 12, 2013
    Applicant: Stryker Corporation
    Inventor: Randall Jeffrey Krohn