Patents by Inventor Sunipa Saha

Sunipa Saha 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: 9138585
    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: Grant
    Filed: August 4, 2011
    Date of Patent: September 22, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Sunipa Saha, Kenneth N. Hayes, Keith L. Herrmann, James Kalgren, Aaron R. McCabe, Holly Rockweiler, Shibaji Shome, Krzysztof Z. Siejko
  • 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
  • Patent number: 9126052
    Abstract: Approaches for rate initialization and overdrive pacing used during capture threshold testing are described. Cardiac cycles are detected and the cardiac events of a cardiac chamber that occur during the cardiac cycles are monitored. The number of intrinsic beats in the cardiac events is counted. Initialization for a capture threshold test involves maintaining a pre-test pacing rate for the capture threshold test if the number of intrinsic beats in the cardiac events is less than a threshold. The pacing rate is increased for the capture threshold test if the number of intrinsic beats in the cardiac events is greater than the threshold.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: September 8, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Eric K. Enrooth, Sunipa Saha, Clayton S. Foster, Yanting Dong
  • 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
  • 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
  • Publication number: 20150165212
    Abstract: Systems and methods for efficiently determining one or more parameters for vectors of a multi-electrode implantable medical device, and for identifying one or more suitable vectors for sensing cardiac electrical data and/or delivering electrical stimulation therapy based on one or more of the determined parameters. Reducing the time required to determine the one or more parameters for each vector can help reduce procedure time for implanting and/or configuring an implantable medical device, which can reduce costs and/or improved patient comfort.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 18, 2015
    Inventors: Sunipa Saha, Keith L. Herrmann, Yinghong Yu, David W. Yost, Holly E. Rockweiler
  • Publication number: 20150165204
    Abstract: Systems and methods for providing CRT therapy to a patient with an implanted multi-site pacing medical device. In one example, an intrinsic electrical delay associated with each of two or more left ventricle electrodes may be determined. The intrinsic electrical delay associated with each of the two or more left ventricle electrodes may be compared to an electrical delay threshold. If the electrical delay associated with one or fewer left ventricle electrodes is greater than the electrical delay threshold, a single left ventricle electrode may be selected for use during subsequent CRT therapy. If the electrical delay associated with more than one left ventricle electrode is greater than the electrical delay threshold, two or more of the left ventricle electrodes may be selected for use during subsequent CRT therapy.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 18, 2015
    Inventors: Yinghong Yu, Keith L. Herrmann, Holly E. Rockweiler, Sunipa Saha, Benjamin J. Nyquist
  • Publication number: 20150134025
    Abstract: Various techniques are disclosed for quickly and efficiently determining cardiac pacing vectors that minimize phrenic nerve stimulation.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 14, 2015
    Inventors: Deepa Mahajan, Yanting Dong, Sunipa Saha, Holly Rockweiler, Kenneth N. Hayes, Krzysztof Z. Siejko, Clayton S. Foster
  • Patent number: 9031651
    Abstract: In an example, a system includes a cardiac pulse generator configured to generate cardiac paces to pace the heart, a sensor configured to sense a physiological signal for use in detecting pace-induced phrenic nerve stimulation where the pace-induced phrenic nerve stimulation is phrenic nerve stimulation induced by electrical cardiac pace signals, and a phrenic nerve stimulation detector configured to analyze the sensed physiological signal to detect PS beats where the PS beats are cardiac paces that induce phrenic nerve stimulation. The detector may be configured to correlate signal data for sensed beat signals to a PS template to detect PS beats, or may be configured to analyze morphological features of sensed beat signals to detect PS beats, or may be configured to detect PS beats using a combination that both correlates signal data for sensed beat signals to a PS template and analyzes morphological features of sensed beat signals.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: May 12, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Holly Rockweiler, Sunipa Saha, Yanting Dong
  • Patent number: 9031647
    Abstract: Cardiac lead implantation systems, devices, and methods for lead implantation are disclosed. An illustrative cardiac lead implantation system comprises a mapping guidewire including one or more electrodes configured for sensing cardiac electrical activity, a signal analyzer including an analysis module configured for analyzing an electrocardiogram signal sensed by the mapping guidewire, and a user interface configured for monitoring one or more hemodynamic parameters within the body. The sensed electrical activity signal can be used by the analysis module to compute a timing interval associated with ventricular depolarization.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: May 12, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Barun Maskara, Yinghong Yu, Bruce A. Tockman, Sunipa Saha, Martin McDaniel, Geng Zhang
  • 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
  • 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
  • Publication number: 20150100103
    Abstract: Methods and device for determining a pacing vector for delivering an electrostimulation therapy are described. An implantable medical device may be configured to determine an anode capture threshold and a cathode capture threshold for a first anode and cathode pair of electrodes, switch a polarity of the first anode and cathode pair of electrodes, and determine an anode capture threshold and a cathode capture threshold for the first anode and cathode pair of electrodes having the switched polarity. The implantable medical device may be further configured to compare a cathodal capture threshold for the anode and cathode pair having the switched polarity to the anodal capture threshold of the first anode and cathode pair of electrodes and select either an anode or a cathode for delivering an electrostimulation therapy based at least in part on the comparison. Other methods and systems are also contemplated and described.
    Type: Application
    Filed: October 2, 2014
    Publication date: April 9, 2015
    Inventors: Holly E. Rockweiler, Shibaji Shome, Arjun D. Sharma, Deepa Mahajan, Sunipa Saha
  • Publication number: 20150066102
    Abstract: The disclosure relates to systems and methods for cardiac rhythm management. In some cases, a system may include a pulse generator for generating pacing pulses for stimulating a heart of a patient; a memory; and a sensor configured to sense a response to a unwanted stimulation and to produce a corresponding sensor signal. A processing circuit may receive the sensor signal for a time after one or more pacing pulses, and may derive a time-frequency representation of the sensor signal based on the received sensor signal. The processing circuit may use the time-frequency representation of the sensor signal to help identify unwanted stimulation. Once unwanted stimulation is detected, the processing circuit may change the pacing pulses to help reduce or eliminate the unwanted stimulation.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Holly E. Rockweiler, David C. Olson, Sunipa Saha
  • Publication number: 20150066103
    Abstract: The disclosure relates to systems and methods for cardiac rhythm management. In some cases, a system may include a pulse generator for generating pacing pulses for stimulating a heart of a patient; a memory; and a sensor configured to sense a response to a unwanted stimulation and to produce a corresponding sensor signal. A processing circuit may receive the sensor signal for a time after one or more pacing pulses, and may derive a time-frequency representation of the sensor signal based on the received sensor signal. The processing circuit may use the time-frequency representation of the sensor signal to help identify unwanted stimulation. Once unwanted stimulation is detected, the processing circuit may change the pacing pulses to help reduce or eliminate the unwanted stimulation.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Holly E. Rockweiler, David C. Olson, Sunipa Saha
  • 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
  • Patent number: 8965507
    Abstract: Various techniques are disclosed for quickly and efficiently determining cardiac pacing vectors that minimize phrenic nerve stimulation.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: February 24, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Deepa Mahajan, Yanting Dong, Sunipa Saha, Holly Rockweiler, Kenneth N. Hayes, Krzysztof Z. Siejko, Clayton S. Foster
  • Patent number: 8958876
    Abstract: In an example of a method, the method includes testing for phrenic nerve stimulation (PS) threshold. If PS beats are detected at the pacing output level, analyzing the detected PS beats using criteria to determine if the pacing output level can be declared to be the PS threshold. If the pacing output level cannot be declared to be the PS threshold based on the analysis of the PS beat at the pacing output level, performing a PS beat confirmation procedure. The PS beat confirmation procedure may include delivering additional cardiac paces at the pacing output level to generate additional PS beats, and analyzing the detected PS beats using other criteria to determine if the pacing output level can be confirmed as the PS threshold.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: February 17, 2015
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Yanting Dong, Sunipa Saha, Holly Rockweiler
  • 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
  • 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