Patents Assigned to St. Jude Medical, Atrial Fibrillation Division, Inc.
  • Patent number: 11559236
    Abstract: An elongate medical device may comprise an elongate tubular body, an electrode, and a trace. The elongate tubular body may comprise a distal end portion and a proximal end portion, the body defining a longitudinal axis. The electrode may comprise electrically-conductive ink extending circumferentially about a portion of the distal end portion. The trace may comprise electrically-conductive ink, electrically coupled with the electrode, extending proximally from the electrode.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: January 24, 2023
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Mark B. Kirschenman
  • Patent number: 11559658
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 24, 2023
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Patent number: 11517372
    Abstract: A method and system for assessing lesion formation in tissue is provided. The system includes an electronic control unit (ECU). The ECU is configured to acquire values for first and second components of a complex impedance between the electrode and the tissue, and to calculate an index responsive to the first and second values. The ECU is further configured to process the ECI to assess lesion formation in the tissue.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: December 6, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Stephan P. Miller, Don Curtis Deno, Saurav Paul, Liane R. Teplitsky
  • Patent number: 11511076
    Abstract: A method of manufacturing a catheter shaft includes the steps of forming an inner layer of a first polymeric material, forming a plait matrix layer including a second polymeric material about the inner layer, and forming an outer layer of a third polymeric material about the plait matrix layer. The plait matrix layer includes a braided wire mesh partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer and the third polymeric material forming the outer layer. The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The first polymeric material and the third polymeric material may be different or the same. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: November 29, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Xiaoping Guo, Richard E. Stehr
  • Patent number: 11478300
    Abstract: The present invention pertains to multiple piece irrigated ablation electrode assemblies wherein the irrigation channels are insulated or separated from at least one temperature sensing mechanism within the distal portion of the electrode assembly. The present invention further pertains to methods for improved assembly and accurate measurement and control of the electrode temperatures while effectively irrigating the device and target areas.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: October 25, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Huisun Wang, Jeremy D. Dando, Dale E. Just, Allen P. Moore
  • Patent number: 11457974
    Abstract: A catheter apparatus includes an elongated body having a distal portion including a distal end, a plurality of flexible segments, and at least one intermediate segment that is less flexible than the flexible segments. Adjacent flexible segments are spaced from each other longitudinally by the at least one intermediate segment. Each of the flexible segments include a sidewall having at least one elongated gap extending at least partially therethrough and forming interlocking members. The at least one intermediate segment is shorter than the flexible segments.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: October 4, 2022
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata
  • Patent number: 11419673
    Abstract: The present invention relates to steerable access sheath assembly including at least one electrode. Moreover, the present invention relates to a steerable sheath access device for use in cardiovascular procedures. Embodiments of the present invention including steerable access sheaths or introducers may provide cardiovascular access for various ablation tools and devices for the performance of various ablation procedures or procedures involving alternate energy sources.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 23, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: James V. Kauphusman, Allan M. Fuentes, Troy T. Tegg, Dale E. Just
  • Patent number: 11399889
    Abstract: Ablation electrode assemblies include an inner core member and an outer shell surrounding the inner core member. The inner core member and the outer shell define a space or separation region therebetween. The inner core member is constructed from a thermally insulative material having a reduced thermal conductivity. In an embodiment, the space is a sealed or evacuated region. In other embodiments, irrigation fluid flows within the space. The ablation electrode assembly further includes at least one thermal sensor in some embodiments. Methods for providing irrigation fluid during cardiac ablation of targeted tissue are disclosed that include calculating the energy delivered to irrigation fluid as it flows within the ablation electrode assembly through temperature measurement of the irrigation fluid. Pulsatile flow of irrigation fluid can be utilized in some embodiments of the disclosure.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 2, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Steven C. Christian, Reed R. Heimbecher
  • Patent number: 11395695
    Abstract: Embodiments of a guide and flexible sleeve for use with catheters for ablation or other medical procedures are disclosed. An exemplary catheter comprises a guide element having a proximal end and a distal end, the distal end configurable in a desired shape. A flexible sleeve is conformable to the guide element so that the flexible sleeve slides over the guide element, the flexible sleeve has a proximal end and a distal end. A controller couples to the flexible sleeve. The controller operates to move the flexible sleeve at least part way between the distal end of the guide element and the proximal end of the guide element. At least one ablation element disposed at the distal end of the flexible sleeve operates to form a substantially continuous ablative lesion when the flexible sleeve is in contact with a contiguous volume of target tissue.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 26, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Theodore A. Johnson
  • Patent number: 11376397
    Abstract: A method of manufacturing a catheter assembly generally includes providing a catheter shaft having an outer layer and an inner reinforcing layer; removing at least a portion of the outer layer from a length of the distal end of the catheter shaft in order to expose a distal segment thereof; providing an inner jacket segment; axially engaging the inner jacket segment with an interior surface of the distal segment of the catheter shaft; providing an outer jacket segment around at least the exposed exterior region of the distal segment of the catheter shaft; and bonding the distal segment of the catheter shaft to the inner jacket segment and the outer jacket segment.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: July 5, 2022
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Troy T. Tegg, Richard E. Stehr, Alan M. Fuentes, Linda Kay Nemec
  • Patent number: 11337750
    Abstract: A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: May 24, 2022
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Carlo Pappone, Alan de la Rama, Peter C. Chen, Cary Hata, Jared A. Shimizu
  • Patent number: 11331137
    Abstract: A medical device is provided comprising a shaft comprising a first segment and a second segment. The first segment is configured to buckle upon application of a first critical force. The second segment includes an outer surface and an inner surface and is configured to buckle upon application of a second critical force. The second critical force is lower than the first critical force. The medical device further comprises a coil disposed radially inwardly of the inner surface of the second segment.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 17, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Eric S. Olson, James V. Kauphusman, Linda K. Nemec, Troy T. Tegg
  • Patent number: 11331136
    Abstract: An electrode for use on a medical device is disclosed. The electrode may have a main body of electrically conductive material extending along an axis and may have a proximal end and a distal end. The electrode may also include a magnetic resonance imaging (MRI) tracking coil disposed in the body. The MRI tracking coil may comprise electrically insulated wire. A catheter including an electrode, as well as a method for determining the location of an electrode, are also disclosed.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: May 17, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Saurav Paul, Troy T. Tegg, Chou Thao, Harry A. Puryear
  • Patent number: 11324550
    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: November 19, 2018
    Date of Patent: May 10, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: D. Curtis Deno, Stephan P. Miller
  • Patent number: 11317967
    Abstract: Magnetic guided ablation catheters and methods of manufacture are disclosed. In an exemplary embodiment, a catheter includes a unitary flexible tubing having a proximal end and a distal end. A plurality of magnets are positioned along an axis of the unitary flexible tubing, the plurality of magnets provided within the unitary flexible tubing. During operation, the plurality of magnets are responsive to an external magnetic field to selectively position and guide the catheter within a body of a patient.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: May 3, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Kirk Kochin Wu, Yongxing Zhang
  • Patent number: 11298175
    Abstract: An electroporation therapy apparatus method, and system is provided. The apparatus, system, and method comprise an electroporation generator (26). The electroporation generator (26) is configured to output an asymmetric balanced waveform to a medical device, and the asymmetric balanced waveform comprises a first positive phase and a first negative phase. The first positive phase comprises a first current and a first time and the first negative phase comprises a second current and a second time. The first current is greater than the second current and the second time is greater than the first time. The asymmetric balanced waveform is configured to irreversibly electroporate a target tissue.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: April 12, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Maurits K. Konings
  • Patent number: 11246535
    Abstract: An electrode support structure assembly is provided comprising an electrode support structure including a plurality of splines. Each of the plurality of splines can have a proximal end portion and a distal end portion. The assembly further comprises a first element defining an axis and comprising an outer surface. The outer surface comprises a plurality of slots configured to receive the distal end portion of each of the plurality of splines. The first element is configured such that the distal end portion of each of the plurality of splines may move with respect to each slot. In accordance with some embodiments, the distal end portion of each of the plurality of splines comprises a section configured for engagement with the first element, wherein the section comprises a shoulder.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: February 15, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Dale E. Just, Troy T. Tegg, Theodore A. Johnson
  • Patent number: 11234612
    Abstract: A medical device can be localized by providing at least three non-colinear localization elements (e.g., electrodes) thereon. Once placed in a non-ionizing localization field, three adjacent localization elements, at least one of which will typically be a spot electrode, may be selected, and the non-ionizing localization field may be used to measure their locations. A cylinder is defined to fit the measured locations of the selected localization elements. The cylinder is rotationally oriented using the measured location of a spot electrode. Location and rotational attitude information may be used to construct a three-dimensional representation of the medical device within the localization field. The electrodes may be provided on the medical device or on a sheath into which the medical device is inserted. The invention also provides systems and methods for identifying and calibrating deflection planes where the medical device and/or sheath are deflectable.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: February 1, 2022
    Assignee: ST JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: John Anderson Hauck, Lubomir Velitchkov Dragnev, Don Curtis Deno, Eric John Wilkowske
  • Patent number: 11217000
    Abstract: Methods for processing two-dimensional ultrasound images from an intracardiac ultrasound imaging catheter provide improved image quality and enable generating three-dimensional composite images of the heart. Two-dimensional ultrasound images are obtained and stored in conjunction with correlating information, such as time or an electrocardiogram. Images related to particular conditions or configurations of the heart can be processed in combination to reduce image noise and increase resolution. Images may be processed to recognize structure edges, and the location of structure edges used to generate cartoon rendered images of the structure. Structure locations may be averaged over several images to remove noise, distortions and blurring from movement.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: January 4, 2022
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Praveen Dala-Krishna
  • Patent number: 11205300
    Abstract: A method of constructing a bounding box comprises: acquiring a set of sensed data points; adding, for each sensed data point, at least one calculated data point; and defining a bounding box containing the sensed and calculated data points. A method of identifying voxels in a voxel grid corresponding to a plurality of data points comprises: calculating, for each data point, a distance between it and each voxel; creating a subset of voxels comprising voxels having a distance from one data point that is less than a predetermined distance; creating another subset comprising those voxels that neighbor a voxel in the first subset; computing, for each voxel in the second subset, a distance between it and each voxel in the first subset; and identifying each voxel in the first subset that is a distance away from each voxel in the second subset that exceeds a predetermined distance.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: December 21, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Carlos Carbonera, Vasily Vylkov, Daniel R. Starks, Jiang Qian, Eric J. Voth