Patents by Inventor D. Curtis Deno

D. Curtis Deno 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: 9717478
    Abstract: A method of displaying the influence of an aspect of a model includes acquiring a two-dimensional echocardiogram having a variable intensity; relating the two-dimensional echocardiogram to a plurality of mapping points, the mapping points existing in a three-dimensional model space; determining a degree of influence value for a mapping point; and displaying the mapping point with a visual attribute that corresponds to the determined degree of influence value.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: August 1, 2017
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Anthony D. Hill, D. Curtis Deno, Robert D. Aiken, Hua Zhong
  • Patent number: 9675266
    Abstract: An efficient system for diagnosing arrhythmias and directing catheter therapies may allow for measuring, classifying, analyzing, and mapping spatial electrophysiological (EP) patterns within a body. The efficient system may further guide arrhythmia therapy and update maps as treatment is delivered. The efficient system may use a medical device having a high density of sensors with a known spatial configuration for collecting EP data and positioning data. Further, the efficient system may also use an electronic control system (ECU) for computing and providing the user with a variety of metrics, derivative metrics, high definition (HD) maps, HD composite maps, and general visual aids for association with a geometrical anatomical model shown on a display device.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: June 13, 2017
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Valtino X. Afonso, Jiazheng Shi, Steven J. Kim, D. Curtis Deno, Dennis J. Morgan
  • Publication number: 20170100075
    Abstract: An electrophysiology catheter is provided. In one embodiment, the catheter includes an elongate, deformable shaft having a proximal end and a distal end and a basket electrode assembly coupled to the distal end of the shaft. The basket electrode assembly has a proximal end and a distal end and is configured to assume a compressed state and an expanded state. The electrode assembly further includes one or more tubular splines having a plurality of electrodes disposed thereon and a plurality of conductors. Each of the plurality of conductors extends through the tubular spline from a corresponding one of the plurality of electrodes to the proximal end of the basket electrode assembly. The tubular splines are configured to assume a non-planar (e.g., a twisted or helical) shape in the expanded state.
    Type: Application
    Filed: October 25, 2016
    Publication date: April 13, 2017
    Inventors: Braden J. Eliason, D. Curtis Deno, Eric J. Voth, Dale E. Just
  • Publication number: 20170049348
    Abstract: A method for determining electrophysiology properties of tissue comprising acquiring electrical signal data from a plurality of electrodes (130) of one or more catheters, determining at least one electrode clique from the plurality of adjacent electrodes (136), computing local conduction velocity vectors for the at least one electrode clique (138), determining at least one catheter orientation independent indicator from which to classify an arrhythmia source based on one or more of an angular dependence parameter associated with a flow field of the local velocity conduction vectors, an eccentricity parameter reflecting the uniformity of local conduction velocity, and divergence and curl-like sums or closed path integral parameters associated with the local velocity vectors, and displaying a rhythm classification responsive to catheter movement thereby facilitating identification of types and causes of arrhythmia disorders.
    Type: Application
    Filed: February 25, 2015
    Publication date: February 23, 2017
    Inventors: D. Curtis Deno, Ram K. Balachandran
  • Publication number: 20170042449
    Abstract: A system for determining electrophysiological data comprising an electronic control unit configured to acquire electrophysiology signals from a plurality of electrodes (130) of one or more catheters, select at least one clique of electrodes from the plurality of electrodes (136) to determine a plurality of local E field data points, determine the location and orientation of the plurality of electrodes, process the electrophysiology signals from the at least one clique from a full set of bipole subcliques to derive the local E field data points associated with the at least one clique of electrodes, derive at least one orientation independent signal from the at least one clique of electrodes (138) from the information content corresponding to weighted parts of electrogram signals, and display or output catheter orientation independent electrophysiologic information to a user or process.
    Type: Application
    Filed: February 25, 2015
    Publication date: February 16, 2017
    Inventors: D. Curtis Deno, Ram K. Balachandran
  • Publication number: 20160331471
    Abstract: A system and method for obtaining an OIS coordinate frame comprising an electronic control unit configured to determine a local 3D electric field loop, create a zero mean version of E(t) over a depolarization interval, compute an ? value at each of a plurality of time intervals, compute an initial estimate of ? from a cross product of E and the ? value for each of the plurality of time intervals, average the initial estimate of ? from each of the plurality of time for a best estimate of ?, determine a plurality of â(?) values and using the corresponding {circumflex over (n)}(?) values, compute a composite match score, and choose at least one best value for â and a best value for {circumflex over (n)}.
    Type: Application
    Filed: May 11, 2016
    Publication date: November 17, 2016
    Inventors: D. Curtis Deno, Ram K. Balachandran, Stéphane Massé
  • Publication number: 20160192982
    Abstract: Electrode assemblies include segmented electrodes disposed on a catheter. The segmented electrodes can be constructed at the tip of the catheter or more proximally located. Tip electrodes can be constructed from an electrically-insulative substrate covered with a conductive material. The conductive material can be deposited on the electrically-insulative substrate to form a single tip electrode or multiple segmented electrodes. In some embodiments the tip electrode can include irrigation flow holes for irrigation. A method of manufacturing a tip electrode comprising a thin layer of conductive material deposited on an electrically-insulative substrate is disclosed. Segmented ring electrodes can be constructed from segmented ring electrodes that can be equally separated around a circumference of a catheter. The segmented ring electrodes can be formed into segmented electrode subassemblies that can then be joined to a catheter shaft.
    Type: Application
    Filed: October 28, 2014
    Publication date: July 7, 2016
    Applicant: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Dale E. Just, D. Curtis Deno, Ram K. Balachandran, Troy T. Tegg
  • Publication number: 20160100770
    Abstract: An efficient system for diagnosing arrhythmias and directing catheter therapies may allow for measuring, classifying, analyzing, and mapping spatial electrophysiological (EP) patterns within a body. The efficient system may further guide arrhythmia therapy and update maps as treatment is delivered. The efficient system may use a medical device having a high density of sensors with a known spatial configuration for collecting EP data and positioning data. Further, the efficient system may also use an electronic control system (ECU) for computing and providing the user with a variety of metrics, derivative metrics, high definition (HD) maps, HD composite maps, and general visual aids for association with a geometrical anatomical model shown on a display device.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 14, 2016
    Inventors: Valtino X. Afonso, Jiazheng Shi, Steven J. Kim, D. Curtis Deno, Dennis J. Morgan
  • Publication number: 20160095651
    Abstract: A system and method for assessing effective delivery of ablation therapy to a tissue in a body is provided. A three-dimensional anatomical map of the tissue is generated and displayed with the map defining a corresponding volume. An index is generated corresponding to a location within the volume with the index indicative of a state of ablation therapy at the location. The index may be derived from one or more factors such as the duration an ablation electrode is present at the location, the amount of energy provided, the degree of electrical coupling between an ablation electrode and the tissue at the location and temperature. A visual characteristic (e.g., color intensity) of a portion of the anatomical map corresponding to the location is then altered responsive to the index.
    Type: Application
    Filed: October 1, 2015
    Publication date: April 7, 2016
    Inventors: D. Curtis Deno, Stephan P. Miller
  • Publication number: 20160045133
    Abstract: A system and method are provided for determining electrophysiological data. The system comprises an electronic control unit that is configured to receive electrical signals from a set of electrodes, receive position and orientation data for the set of electrodes from a mapping system, compensate for position and orientation artifacts of the set of electrodes, compose cliques of a subset of neighboring electrodes in the set of electrodes, determine catheter orientation independent information of a target tissue, and output the orientation independent information to a display.
    Type: Application
    Filed: May 7, 2014
    Publication date: February 18, 2016
    Inventors: Ram K. Balachandran, D. Curtis Deno
  • Patent number: 9186081
    Abstract: An efficient system for diagnosing arrhythmias and directing catheter therapies may allow for measuring, classifying, analyzing, and mapping spatial electrophysiological (EP) patterns within a body. The efficient system may further guide arrhythmia therapy and update maps as treatment is delivered. The efficient system may use a medical device having a high density of sensors with a known spatial configuration for collecting EP data and positioning data. Further, the efficient system may also use an electronic control system (ECU) for computing and providing the user with a variety of metrics, derivative metrics, high definition (HD) maps, HD composite maps, and general visual aids for association with a geometrical anatomical model shown on a display device.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 17, 2015
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Valtino X. Afonso, Jiazheng Shi, Steven J. Kim, D. Curtis Deno, Dennis J. Morgan
  • Patent number: 9173611
    Abstract: A system and method for assessing effective delivery of ablation therapy to a tissue in a body is provided. A three-dimensional anatomical map of the tissue is generated and displayed with the map defining a corresponding volume. An index is generated corresponding to a location within the volume with the index indicative of a state of ablation therapy at the location. The index may be derived from one or more factors such as the duration an ablation electrode is present at the location, the amount of energy provided, the degree of electrical coupling between an ablation electrode and the tissue at the location and temperature. A visual characteristic (e.g., color intensity) of a portion of the anatomical map corresponding to the location is then altered responsive to the index.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: November 3, 2015
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: D. Curtis Deno, Stephan P. Miller
  • Patent number: 9125573
    Abstract: An introducer sheath for a medical device is provided. The sheath includes a deformable, elongate body disposed about a longitudinal axis. The body has proximal and distal ends and defines a lumen extending between the proximal and distal ends and configured to allow passage of the medical device therethrough. The body is configured to allow an electric current to pass radially between a space outside of the body and the lumen such that the position of the medical device within a patient can be monitored and electrogram readings from body tissues can be measured while the device is in the sheath. In some embodiments of the invention, the body may include a one or more apertures extending from the radially outer surface of the body to the lumen or a portion of the body may be made from a conductive and/or fluid permeable material.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: September 8, 2015
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Lev A. Koyrakh, Daniel J. Potter, Jeffrey A. Schweitzer, D. Curtis Deno, Anthony D. Hill, Dale Eric Just
  • Patent number: 9101772
    Abstract: A method of stimulation therapy and an apparatus for providing the therapy which addresses cardiac dysfunction including heart failure. The therapy employs atrial pacing pulses delivered to a heart after the atrial refractory period and timed so that they will not cause a ventricular contraction. These atrial pacing are timed to achieve beneficial effects on myocardial mechanics (efficacy) while maintaining an extremely low level of risk of arrhythmia induction. These methods may be employed individually or in combinations in an external or implantable ESS therapy delivery device.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: August 11, 2015
    Assignee: Medtronic, Inc.
    Inventors: Karen J. Kleckner, Kathleen A. Prieve, Jeffrey M. Gillberg, Ren Zhou, Kenneth M. Anderson, D. Curtis Deno, Glenn C. Zillmer, Ruth N. Klepfer, Vincent E. Splett, David E. Euler, Lawrence J. Mulligan, Edwin G. Duffin, David A. Igel, John E. Burnes
  • Publication number: 20150119690
    Abstract: An electrophysiological laboratory system comprises a subsystem configured to perform diagnostic and/or therapeutic functions, a medical device, and an interface module disposed therebetween. The medical device comprises a shaft having proximal and distal portions, high- and low-impedance electrical pathways disposed within the shaft, and an electrode disposed at the distal portion of the shaft and electrically coupled to one or both of the high- and low-impedance electrical pathways. The electrode is configured to perform diagnostic and/or therapy delivery functions. The interface module comprises a high-impedance channel configured to couple the high-impedance pathway of the medical device to the subsystem, and to attenuate magnetic resonance RF and gradient field pulses generated by the MRI system. The interface module further comprises a low-impedance channel configured to couple the low- impedance pathway of the medical device to the subsystem.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 30, 2015
    Inventors: D. Curtis Deno, Jeffrey A. Schweitzer
  • Publication number: 20150080715
    Abstract: A three dimensional physiological mapping system utilizing an intracardiac echo catheter capable of being located in six degrees of freedom by a visualization, navigation, or mapping system. An echocardiography image of the intracardiac echo catheter may be projected within a geometric model of the visualization, navigation, or mapping system where the location of the projected image is adjusted in response to user input identifying a structure present in the echocardiography image and the geometric model.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 19, 2015
    Inventors: D. Curtis Deno, Anthony D. Hill, Hua Zhong
  • Patent number: 8948476
    Abstract: A system and method for identifying a location of a physical structure in a body is provided. The system includes an electronic control unit configured to register a first image of a portion of the body in a three-dimensional coordinate system. The electronic control unit is further configured to identify the location of the physical structure in the three-dimensional coordinate system responsive to flow of a fluid shown in the image. The fluid may comprise blood. In one embodiment, the electronic control unit is further configured to generate a second image, such as a three dimensional model, incorporating a representation of the physical structure within a larger physical environment in the three-dimensional coordinate system.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: February 3, 2015
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: D. Curtis Deno, Anthony D. Hill
  • Patent number: 8900150
    Abstract: A three dimensional physiological mapping system utilizing an intracardiac echo catheter capable of being located in six degrees of freedom by a visualization, navigation, or mapping system. An echocardiography image of the intracardiac echo catheter may be projected within a geometric model of the visualization, navigation, or mapping system where the location of the projected image is adjusted in response to user input identifying a structure present in the echocardiography image and the geometric model.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: December 2, 2014
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: D. Curtis Deno, Anthony D. Hill, Hua Zhong
  • Publication number: 20140278129
    Abstract: An embodiment of a method for solving the inverse problem of electrophysiology and determining a voltage distribution on a surface of a tissue may comprise receiving a plurality of voltages collected by a plurality of electrodes adjacent to the surface, discretizing the problem using a Finite Element Method (FEM) or a Boundary Element Method (BEM), introducing one or more regularization terms to an error minimization formulation, and solving, by a processor, the voltage distribution according to the plurality of voltages and according to the regularization terms. The regularization terms may comprise one or more of a Laplacian smoothness operator, a Tikhonov regularization matrix, a confidence matrix, and a linear operator that interpolates the plurality of electrode voltages to the tissue voltage distribution.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Eric Jon Voth, D. Curtis Deno, Lev Abramovich Koyrakh, Braden Eliason
  • Patent number: 8755885
    Abstract: The invention relates to medical devices such as pacemakers, pulse generators, cardioverter-defibrillators and the like and more particularly relates to modular and reconfigurable medical system platforms and methods of designing, testing, controlling and implementing diverse therapies, diagnostics, physiologic sensors and related instrumentation using said medical system platforms. Methods, systems and devices provide a new design platform for implantable and external medical devices such as pacemakers, defibrillators, neurostimulators, heart monitors, etc. A real-time, highly flexible system of software and hardware modules enables both prototypes and products to respond to patient and customer needs with greater design and manufacturing efficiency. Certain embodiments integrate a general-purpose processor with interface circuitry to provide a standard platform for implementing new and conventional therapies with software models rather than custom circuitry.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: June 17, 2014
    Assignee: Medtronic, Inc.
    Inventors: D. Curtis Deno, Jeffrey D. Wilkinson, John C. Stroebel