Patents by Inventor Allan C. Shuros

Allan C. Shuros 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).

  • Augmented signal vector analysis to suppress global activation during electrophysiology mapping
    Patent number: 9131866
    Abstract: Electrical activity propagation along an electrode array within a cardiac chamber is reconstructed. Signals are sampled from the electrode array including signals from a channel of interest. An N-dimensional signal vector is then constructed using signals from N neighboring channels referenced to the channel of interest. A change in the N-dimensional signal vector over time is then determined and compared to a predetermined threshold to establish whether local activation has occurred on the channel of interest.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: September 15, 2015
    Assignee: Boston Scientific Scimed Inc.
    Inventors: Pramodsingh Hirasingh Thakur, Barun Maskara, Allan C. Shuros, Sunipa Saha, Shibaji Shome
  • Systems and methods to optimize pacing fusion with native activation
    Patent number: 9089710
    Abstract: In an example, a pacing therapy can be optimized using information indicative of an offset duration between an intrinsic first atrioventricular delay of a subject at rest and a second atrioventricular delay specified to enhance a cardiac output of the subject heart when the subject is at rest. Optimizing the therapy can include receiving information about a heart rate of the subject and receiving information about an intrinsic, heart rate dependent atrioventricular delay. In an example, a therapy parameter, such as a therapy atrioventricular delay, can be adjusted using information about the received heart rate of the subject, the heart-rate-dependent third AV delay, or the offset duration.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: July 28, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Barun Maskara, Allan C. Shuros
  • Estimating restitution curves in an anatomical mapping system
    Patent number: 9089272
    Abstract: A method for mapping an anatomical structure includes sensing activation signals of physiological activity with a plurality of electrodes disposed in or near the anatomical structure, each activation signal having an associated cycle length, estimating an action potential duration and diastolic interval for each cycle length, generating a restitution curve based on the estimated action potential duration and diastolic interval from a preceding cycle length, iteratively optimizing each estimated action potential duration and corresponding diastolic interval to maximize a functional relationship between the estimated action potential duration and estimated diastolic interval from preceding cycle length, and generating an action potential duration restitution curve based on the optimized action potential durations and diastolic intervals.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: July 28, 2015
    Assignee: Boston Scientific Scimed Inc.
    Inventors: Pramodsingh H. Thakur, Barun Maskara, Shantha Arcot-Krishnamurthy, Shibaji Shome, Sunipa Saha, Allan C. Shuros
  • MEDICAL DEVICES FOR MAPPING CARDIAC TISSUE
    Publication number: 20150196214
    Abstract: Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft with a plurality of electrodes coupled thereto and a processor coupled to the catheter shaft. The processor may be capable of collecting a set of signals from the plurality of electrodes, characterizing the set of signals, generating a visual representation of the set of signals and refining the visual representation.
    Type: Application
    Filed: January 12, 2015
    Publication date: July 16, 2015
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: ALLAN C. SHUROS, PRAMODSINGH HIRASINGH THAKUR, SHIBAJI SHOME, BARUN MASKARA, SHANTHA ARCOT-KRISHNAMURTHY, JACOB I. LAUGHNER
  • CARDIAC MAPPING USING LATENCY INTERPOLATION
    Publication number: 20150126840
    Abstract: Medical devices and methods for using medical devices are disclosed. An example mapping medical device may include a catheter shaft with a plurality of electrodes. The plurality of electrodes may include a first pair of electrodes, a second pair of electrodes, a third pair of electrodes and a fourth pair of electrodes. The mapping medical device may further include a processor, wherein the processor may be configured to determine a first latency between the first pair of electrodes, determine a second latency between the second pair of electrodes, determine a third latency between the third pair of electrodes, determine a fourth latency between the fourth pair of electrodes, and determine a target signal by interpolating the first latency, the second latency, the third latency and the fourth latency.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 7, 2015
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: PRAMODSINGH HIRASINGH THAKUR, BARUN MASKARA, SHIBAJI SHOME, ALLAN C. SHUROS, SHANTHA ARCOT-KRISHNAMURTHY, SUNIPA SAHA
  • MEDICAL DEVICE FOR HIGH RESOLUTION MAPPING USING LOCALIZED MATCHING
    Publication number: 20150119672
    Abstract: Medical devices and methods for using medical devices are disclosed. An example mapping medical device may include a catheter shaft with a plurality of electrodes. The catheter shaft may be coupled to a processor. The processor may be capable of collecting a first set of signals from a first location, collecting a second set of signals from a second location, characterizing the first set of signals over a first time period, characterizing the second set of signals over a second time period, comparing the first set of signals to the second set of signals and matching a first signal from the first set of signals with a second signal from the second set of signals.
    Type: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: PRAMODSINGH HIRASINGH THAKUR, ALLAN C. SHUROS, BARUN MASKARA, SHIBAJI SHOME, SHANTHA ARCOT-KRISHNAMURTHY, SUNIPA SAHA, SCOTT A. MEYER
  • Method and apparatus for safety control during cardiac pacing mode transition
    Patent number: 8983600
    Abstract: A cardiac pacing system introduces a transitional period when pacing mode changes, such as when pacing starts and stops, or when one or more pacing parameter values change substantially. For each pacing parameter that changes substantially when the pacing mode changes, its value is adjusted incrementally over the transitional period to protect the heart from potentially harmful conditions associated with an abrupt change in the value of that pacing parameter.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: March 17, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Allan C. Shuros, Eric A. Mokelke
  • ESTIMATING THE PREVALENCE OF ACTIVATION PATTERNS IN DATA SEGMENTS DURING ELECTROPHYSIOLOGY MAPPING
    Publication number: 20150065836
    Abstract: A system and method for mapping an anatomical structure includes sensing activation signals of physiological activity with a plurality of mapping electrodes disposed in or near the anatomical structure. Patterns among the sensed activation signals are identified based on a similarity measure generated between each unique pair of identified patterns which are classified into groups based on a correlation between the corresponding pairs of similarity measures. A characteristic representation is determined for each group of similarity measures and displayed as a summary plot of the characteristic representations.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Pramodsingh Hirasingh Thakur, Shibaji Shome, Allan C. Shuros, Shantha Arcot-Krishnamurthy, Barun Maskara, Sunipa Saha
  • Variable shortening of AV delay for treatment of cardiac disease
    Patent number: 8972007
    Abstract: An implantable pacing device for delivering ventricular pacing may be configured to intermittently and variably reduce the AV delay interval used in an atrial triggered pacing mode in a manner that simulates exercise. The device may be programmed to intermittently switch to and from a variably shortened AV delay mode according to defined entry and exit conditions.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: March 3, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Allan C. Shuros, Donald L. Hopper, Shantha Arcot-Krishnamurthy
  • Stimulation patch with passive adhesion
    Patent number: 8965512
    Abstract: System and methods for adhering a patch of stimulation electrode(s) to blood vessels to stimulate a target site on the blood vessel are described. In various embodiments, the system includes an adhesion patch and at least one electrode. The adhesion patch includes a passive adhesion mechanism that may produce an adhesive force sufficiently strong to adhere the adhesion patch to the exterior of the blood vessel and to operationally position the at least one electrode for use in electrically stimulating a target site of the blood vessel. The adhesion patch may also include a release mechanism that is configured for a user to disengage the patch from the exterior of the blood vessel without significant trauma to the blood vessel. After being released, the adhesion patch may be re-adhered to a different target site of the blood vessel and stimulate the different target site.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: February 24, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Allan C. Shuros, Ismail Guler, Richard Charles Gunderson, Joel P. Grover, Eric A. Mokelke, Adam David Grovender
  • Method and apparatus for safe and efficient delivery of cardiac stress augmentation pacing
    Patent number: 8958873
    Abstract: A cardiac pacing system controls the progression of a cardiac disorder such as heart failure by delivering cardiac stress augmentation pacing to create or augment regional stress in the heart according to a delivery schedule programmed for a patient. Various events associated with the patient's conditions, activities, and other treatments may render the cardiac stress augmentation pacing risky or ineffective. The system detects such events before and during each cardiac stress augmentation pacing session and modifies the delivery schedule in response to the detection of each event to ensure patient safety and therapy efficiency.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 17, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Shantha Arcot-Krishnamurthy, Allan C. Shuros, Craig Stolen, Robert Shipley
  • Timing for His-bundle pacing
    Patent number: 8954147
    Abstract: An A-H delay can be specified, such as by computing the A-H delay using a measured cardiovascular physiologic parameter. The A-H delay can be used for specifying timing between a paced or sensed atrial contraction and a His-bundle pacing time.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: February 10, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Shantha Arcot-Krishnamurthy, Allan C. Shuros, Jiang Ding
  • Stimulation patch with active adhesion
    Patent number: 8948872
    Abstract: System and methods for adhering a patch of stimulation electrode(s) to blood vessels to stimulate a target site on the blood vessel are described. In one embodiment, the system includes an adhesion patch and at least one electrode. The adhesion patch includes an active adhesion mechanism that may produce an adhesive force sufficiently strong to adhere the adhesion patch to the exterior of the blood vessel and to operationally position the at least one electrode for use in electrically stimulating a target site of the blood vessel. The adhesion patch may also include a release mechanism that is configured for a user to disengage the patch from the exterior of the blood vessel without significant trauma to the blood vessel. After being released, the adhesion patch may be re-adhered to a different target site of the blood vessel and stimulate the different target site.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: February 3, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Allan C. Shuros, Ismail Guler, Richard Charles Gunderson, Joel P. Grover, Eric A. Mokelke, Adam Grovender
  • Method and apparatus for right ventricular resynchronization
    Patent number: 8942805
    Abstract: An apparatus comprises a cardiac signal sensing circuit and a first implantable electrode pair. At least one electrode of the first implantable electrode pair is configured for placement at a location in a right branch of a His bundle of the subject. The apparatus can include a therapy circuit and a control circuit. The control circuit can include an AH delay calculation circuit configured to calculate an optimal paced AH delay interval. The pacing stimulation location is distal to a location of RV conduction block in a right branch of the His bundle. The control circuit initiates delivery of an electrical stimulation pulse to the stimulation location in the His bundle according to the calculated paced AH delay interval and in response to an intrinsic depolarization event sensed in an atrium of the subject.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: January 27, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Allan C. Shuros, Jiang Ding, Barun Maskara, Yinghong Yu
  • Reverse hysteresis and mode switching for intermittent pacing therapy
    Patent number: 8929983
    Abstract: Cardioprotective pre-excitation pacing may be applied to stress or de-stress a particular myocardial region delivering of pacing pulses in a manner that causes a dyssynchronous contraction. Such dyssynchronous contractions are responsible for the desired cardioprotective effects of pre-excitation pacing. A method and device for applying reverse hysteresis and mode switching to the delivery of such cardioprotective pacing are described.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: January 6, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Shantha Arcot-Krishnamurthy, Gary T. Seim, Kent Lee, Yanting Dong, Allan C. Shuros, David L. Whitehouse
  • Method and apparatus for endolymphatic drug delivery
    Patent number: 8905999
    Abstract: Described herein are a method and apparatus for introducing instrumentation into the lymphatic system that can be used for physiological monitoring and/or delivery of therapy. Such instrumentation, for example, may include one or more sensors for measuring physiological variables and/or one or more instruments for delivering therapy that is adapted to be disposed within a lymphatic vessel.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: December 9, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Allan C. Shuros, Andrew P. Kramer, Tamara Colette Baynham, James Cawthra, M. Jason Brooke
  • Method and apparatus for gastrointestinal stimulation via the lymphatic system
    Patent number: 8897878
    Abstract: An implantable gastrointestinal (GI) stimulation system includes an implantable medical device and at least one stimulus delivery device configured to be placed in one or more lymphatic vessels of a patient, such as the patient's thoracic duct and/or vessels branching from the thoracic duct. In one embodiment, the implantable medical device includes a GI stimulation circuit to deliver electrical stimulation pulses to one or more target regions adjacent to a lymphatic vessel through the stimulus delivery device. In one embodiment, to control obesity, the electrical stimulation pulses are delivered to the organs and/or nerves of the GI tract to create a sensation of satiety and/or to expedite food movement through the GI tract.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: November 25, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventor: Allan C. Shuros
  • Representation and identification of activity patterns during electro-physiology mapping using vector fields
    Publication number: 20140343388
    Abstract: A method and system for mapping an anatomical structure includes sensing activation signals of intrinsic physiological activity with a plurality of mapping electrodes disposed in or near the anatomical structure, each of the plurality of mapping electrodes having an electrode location. A vector field map which represents a direction of propagation of the activation signals at each electrode location is generated to identify a signature pattern and a location in the vector field map according to at least one vector field template. A target location of the identified signature pattern is identified according to a corresponding electrode location.
    Type: Application
    Filed: May 14, 2014
    Publication date: November 20, 2014
    Applicant: Boston Scientific Scimed Inc.
    Inventors: Pramodsingh H. Thakur, Shibaji Shome, Shantha Arcot-Krishnamurthy, Allan C. Shuros, Barun Maskara, Sunipa Saha
  • ENHANCED ACTIVATION ONSET TIME OPTIMIZATION BY SIMILARITY BASED PATTERN MATCHING
    Publication number: 20140343442
    Abstract: An anatomical mapping system and method includes mapping electrodes configured to detect activation signals of cardiac activity. A processing system is configured to record the detected activation signals and generate a vector field for each sensed activation signal during each instance of the physiological activity. The processing system determines an onset time and alternative onset time candidates, identifies an initial vector field template based on a degree of similarity between the initial vector field and a vector field template from a bank of templates, then determines an optimized onset time for each activation signal based on a degree similarity between the onset time candidates and initial vector field template.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 20, 2014
    Applicant: Boston Scientific Scimed Inc.
    Inventors: Pramodsingh H. Thakur, Shantha Arcot-Krishnamurthy, Allan C. Shuros, Shibaji Shome, Barun Maskara, Sunipa Saha
  • Method and apparatus for sensing and avoiding cardiac conduction system during valve deployment
    Patent number: 8888709
    Abstract: Various techniques are described for replacement heart valve implantation. In one example, a system includes a specialized conduction system tissue activation potential sensing device, configured for delivery to an intracardiac region, a specialized conduction system tissue activation detector circuit, configured to detect, using the sensing device, a specialized conduction system tissue activation potential, and a processor circuit, configured to use information about the detected specialized conduction system tissue activation potential to generate a heart valve placement indication.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: November 18, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Allan C. Shuros, Joel P. Grover, Ismail Guler, Adam Grovender, Richard Charles Gunderson