Patents by Inventor Keith L. Herrmann

Keith L. Herrmann 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).

  • Publication number: 20150165205
    Abstract: Some systems and methods may facilitate selection of a vector for delivering electrical stimulation to a patient's heart. One method may include displaying a plurality of vectors on a display screen wherein each vector represents a different combination of three or more electro-stimulation electrodes, determining an electrical impedance for each of the plurality of vectors, displaying on the display screen the electrical impedance for each of the plurality of vectors, receiving a selection of a set of the plurality of vectors, determining, for each of the vectors in the set of vectors, a capture threshold, displaying on the display screen the capture threshold for each of the vectors in the set of vectors, receiving a selection of a vector from the set of vectors for delivery of electrical stimulation to the patient's heart, and programming the electro-stimulation device electrical stimulation to the patient's heart via the selected vector.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 18, 2015
    Inventors: Holly E. Rockweiler, Sunipa Saha, Keith L. Herrmann, Yinghong Yu, Joel A. Krueger
  • Patent number: 8880160
    Abstract: A system comprises a cardiac signal sensing and a processing circuit. The cardiac signal sensing circuit senses a first cardiac signal segment that includes a QRS complex and a second cardiac signal segment that includes a fiducial indicative of local ventricular activation. The processor circuit includes a site activation timer circuit configured to determine a time duration between a fiducial of the QRS complex of the first cardiac signal segment and the fiducial of the second cardiac signal segment. The processor circuit is configured to generate, using the determined time duration, an indication of optimality of placement of one or more electrodes for delivering therapy and provide the indication to at least one of a user or process.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: November 4, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Shibaji Shome, Pramodsingh Hirasingh Thakur, Yinghong Yu, Keith L. Herrmann, Aaron R. McCabe, Jiang Ding
  • Publication number: 20130190636
    Abstract: A system comprises a cardiac signal sensing and a processing circuit. The cardiac signal sensing circuit senses a first cardiac signal segment that includes a QRS complex and a second cardiac signal segment that includes a fiducial indicative of local ventricular activation. The processor circuit includes a site activation timer circuit configured to determine a time duration between a fiducial of the QRS complex of the first cardiac signal segment and the fiducial of the second cardiac signal segment. The processor circuit is configured to generate, using the determined time duration, an indication of optimality of placement of one or more electrodes for delivering therapy and provide the indication to at least one of a user or process.
    Type: Application
    Filed: July 19, 2012
    Publication date: July 25, 2013
    Inventors: Shibaji Shome, Pramodsingh Hirasingh Thakur, Yinghong Yu, Keith L. Herrmann, Aaron R. McCabe, Jiang Ding
  • Publication number: 20120203295
    Abstract: An apparatus comprises a cardiac signal sensing circuit, a stimulus circuit, and a control circuit. The control circuit includes a pacing site locating circuit that initiates a first electrical stimulus from a first electrode positioned in or near a first ventricle of a heart, determines a first time interval between delivery of the first electrical stimulus and a subsequent cardiac event sensed at a selectable electrode location in or near a second ventricle of the heart, initiates a second electrical stimulus at the selectable electrode location in or near the second ventricle, determines a second time interval between delivery of the second electrical stimulus and a subsequent cardiac event sensed at the first ventricle, calculates a difference between the first and second time intervals, and generates an indication of a preferred pacing site in the second ventricle according to the calculated differences between the first and second time intervals.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Inventors: Barun Maskara, Keith L. Herrmann
  • Publication number: 20120035685
    Abstract: An interactive representation of electrostimulation electrodes or vectors can be provided, such as for configuring combinations of electrostimulation electrodes. In an example, electrodes or test parameters can be presented graphically or in a table. A user interface can be configured to receive user-input designating electrode combinations or vectors for test or for use in programming an implantable or ambulatory medical device. The interface can be used to indicate suggested electrode combinations or vectors in response to a first selection of an electrode. Tests can be performed on electrode combinations and vectors, and the results of the tests can be presented to a user using the interactive representation. In an example, test results can be analyzed by a processor and optionally used to program an implantable or ambulatory medical device.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 9, 2012
    Inventors: Sunipa Saha, Kenneth N. Hayes, Keith L. Herrmann, James Kalgren, Aaron R. McCabe, Holly Rockweiler, Shibaji Shome, Krzysztof Z. Siejko
  • Publication number: 20110282409
    Abstract: A system and method for cardiac rhythm management using a programmable cardiac rhythm management device is described, wherein the method includes storing parameter interaction constraints between different programmable parameters, storing programmable parameters for the device, wherein each programmable parameter has a predefined set of possible values, wherein one programmable parameter is a delay value, and calculating initial seed values for user-set delay range input fields, wherein the seed values do not violate any parameter interaction constraints and maximize the difference between ends of the user-set delay range, wherein the user-set delay range provides the outer limits of a programmed delay value. The method further includes presenting an input screen to the user on a user display device, wherein the input screen comprises user-set delay range input fields containing the initial seed values.
    Type: Application
    Filed: April 11, 2011
    Publication date: November 17, 2011
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: David J. Ternes, Keith L. Herrmann