Patents Assigned to St. Jude Medical, Atrial Fibrillation Division, Inc.
  • 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
  • Patent number: 11179193
    Abstract: An elongate medical device may include an elongate body having a proximal end portion and a distal end portion and defining a longitudinal axis extending from the proximal end portion to the distal end portion. The elongate medical device may further include a basket assembly coupled to the distal end portion comprising a plurality of ablation elements, each of the ablation elements configured to ablate a respective target, the basket assembly disposed on a radial exterior of the elongate body. The elongate medical device may further include an imaging transmitter disposed radially-inward of the ablation elements and configured to project imaging energy towards at least one of the respective targets.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: November 23, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Fermin Armando Lupotti
  • Patent number: 11154691
    Abstract: The instant invention relates generally to introducer catheters used to help deliver catheters or other medical devices to locations within the human body. In particular, the instant invention relates to large diameter introducer catheters (introducer catheters with lumens greater than about 6 French) having increased strength, flexibility, and kink resistance. Introducer catheters according to the teachings herein may also include curved distal ends and flared (that is, funnel-like) transition sections within their lumens.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: October 26, 2021
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Chad A. Thorstenson, James D. Savage
  • Patent number: 11154355
    Abstract: In various embodiments, a catheter comprising an expandable electrode assembly or basket is provided. In specific embodiments, the basket is particularly useful for mapping electrical activity at one or more locations within the heart. The basket can comprise a plurality of bendable or deflectable arms. At least one of the arms may have varied flexibility over its length in the form of one or more discontinuities of stiffness or flexibility at an elbow region or other variances in flexibility over the arm's length. Such variance in flexibility may allow the arm to assume a different bent configuration or respond to external factors more positively than possible with an arm having a static or near static flexibility or stiffness over its length.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 26, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Sacha C. Hall, Dale E. Just, Alan de la Rama, Cary Hata
  • Patent number: 11154350
    Abstract: The present disclosure relates generally to catheter devices, including irrigated and non-irrigated ablation catheters. More specifically, this disclosure relates to irrigated ablation catheters including an irrigation lumen having at least one electronic device at least partially disposed therein. In many embodiments, the irrigation lumen further includes at least one sideport. In some embodiments, the electronic device has a distal end extending out of the irrigation lumen and into an electrode tip assembly. In some embodiments, a proximal end of the electronic device extends through the sideport in the irrigation lumen.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: October 26, 2021
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Ron Phan Nguyen, Terry Sterrett, Kevin Herrera
  • Patent number: 11116941
    Abstract: Catheter curve shape struts for steerable medical devices such as catheters are disclosed. These struts may not only help shape a steerable portion of a medical device (e.g., a distal portion of a catheter), but also may help to return a steered or deflected portion of the medical device to an uncurved configuration when it is no longer desirable or necessary to steer or deflect the medical device. These struts may include first and second pluralities of complementary, staggered cutout regions. When used in a catheter that is deployed via an introducer, at least some configurations of the catheter curve shape strut can enable the catheter to be rotated about its longitudinal axis, even when the distal deflectable section is in a curved configuration and inside of the introducer.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: September 14, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Sameer Pai
  • Patent number: 11096742
    Abstract: The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are chamfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002? to about 0.008?.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: August 24, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Huisun Wang, Sacha C. Hall
  • Patent number: 11065052
    Abstract: A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: July 20, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Dale E. Just, Troy T. Tegg, Theodore A. Johnson, Sacha C. Hall
  • Patent number: 11052227
    Abstract: A deflectable catheter shaft section is disclosed comprising an elongated body extending along a longitudinal axis and comprising a distal end and a proximal end; and a plurality of lumens extending along the longitudinal axis of the elongated body, wherein at least one of the lumens is abutting at least another one of the lumens. A catheter comprising the deflectable catheter shaft section and a method of manufacturing the deflectable catheter shaft section are also disclosed. A catheter incorporating a deflectable catheter shaft section can further comprise first and second compression coils disposed over pull wires located within the catheter, wherein the compression coils are unattached to the catheter or components thereof, but can be constrained by a shaft coupler at a distal end of each of the compression coils and by at least a portion of a handle assembly at a proximal end of each of the compression coils.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: July 6, 2021
    Assignee: St Jude Medical, Atrial Fibrillation Division, Inc
    Inventor: Troy T Tegg
  • Patent number: 11000684
    Abstract: Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: May 11, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Saurav Paul, Troy T. Tegg, Israel A. Byrd, Riki Thao, Harry A. Puryear, Linda Nemec
  • Patent number: 10987162
    Abstract: An irrigated ablation electrode assembly comprises a distal member, a first manifold, and a second manifold. The distal member includes an outer surface; an inner surface; and at least one radially extending passageway that extends from the inner surface of the distal member to the outer surface of the distal member. The first manifold includes an outer surface, an inner cavity, and at least one radially extending passageway that extends from the inner cavity to the outer surface of the first manifold. The second manifold includes an outer surface, an inner surface, and at least one radially extending passageway that extends from the inner surface of the second manifold to the outer surface of the second manifold. Other irrigated ablation electrode assemblies are also presented.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: April 27, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Steven C. Christian
  • Patent number: 10980977
    Abstract: A handle assembly is provided for use in navigating a deformable shaft within a body. The assembly includes a first guide member defining first and second linear channels and a second guide member configured for rotation relative to the first guide member. First and second connectors are disposed within, and movable within, the first and second linear channels along first and second parallel axes, respectively, and are configured for coupling to first and second steering wires, respectively. The assembly includes means, such as a flexible coupling connected to the second guide member and the connectors, for translating rotation of the second guide member into linear movement of the first connector in a first axial direction and linear movement of the second connector in a second axial direction, opposite the first axial direction such that the first and second steering wires move in opposite directions.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: April 20, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Troy T. Tegg
  • Patent number: 10973571
    Abstract: A system for providing irrigation fluid during ablation of tissue includes a catheter, an electrode assembly, at least one thermal sensor adapted to be connected to the catheter, and a control system. The electrode assembly is adapted to be connected to an ablation generator. The thermal sensor is adapted to be operatively connected to an electronic control unit (ECU). The ECU receives as an input temperature measurement data from the thermal sensor; determines a power delivery rate value for the ablation generator responsive to the temperature measurement data; and outputs the power delivery rate value. The control system also delivers irrigation fluid to the irrigated catheter at a first flow rate in a first time period and at a second flow rate in a second time period that is temporally after the first time period. The second flow rate is at least half of the first flow rate.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: April 13, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Steven C. Christian, Theodore A. Johnson
  • Patent number: 10960180
    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: April 26, 2018
    Date of Patent: March 30, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Xiaoping Guo, Richard E. Stehr
  • Patent number: 10960181
    Abstract: An apparatus for imparting a tensile force to deflect a distal portion of a catheter while maintaining its exterior dimensions may include a handle grip including a cross-section of generally predetermined exterior dimensions, and a longitudinal axis. A flexible elongate member may include proximal and distal end portions, with the proximal end portion being coupled to the handle grip. An adjustment knob may include a cross-section of generally predetermined exterior dimensions, and is rotatably coupled to the handle grip around the longitudinal axis. An elongate deflection member may be operably coupled to the adjustment knob and to the distal end portion of the elongate member. Rotation of the adjustment knob may impart a tensile force to the deflection member thereby causing the distal end portion of the elongate member to deflect from a prior configuration while maintaining the generally predetermined exterior dimensions of the handle grip and the adjustment knob.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: March 30, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Michael C. Bednarek, Eric J. Wilkowske, Richard E. Stehr, William E. Butler
  • Patent number: 10946166
    Abstract: A deflectable, flexible device includes an elongate body, a convoluted tip portion at a distal end of the elongate body, and a lumen to receive one or more wires. The convoluted tip portion includes an electroformed pleated region which is formed by electrodepositing a metal on a mandrel having a pleated region. The convoluted tip portion may be hermetically sealed to permit repeated sterilization. The electroformed pleated region may include one or more fluid emission orifices. The convoluted tip portion extends or bends in response to fluid pressure manipulation, contact with tissue, manipulation with an internal spring or wire, or by a user pushing, pulling, or twisting the catheter directly or via an introducer sheath or the like. The convoluted tip portion may further include an RF ablation element or other energy-driven technique to create continuous linear lesions or a sensing element.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: March 16, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: John W. Sliwa, Stephen A. Morse
  • Patent number: 10945632
    Abstract: A method of detecting dislodgement of a navigational reference for a localization system includes securing a reference catheter, including at least one reference localization element, at an initial reference location within a localization field. The positions of one or more of the reference localization elements are monitored for a perceived displacement that suggests that the reference catheter has become dislodged from the initial reference location (e.g., a displacement above a certain threshold, such as about 4 mm). The direction of this perceived displacement may then be further analyzed (e.g., compared to a predicted or most likely direction of displacement) to determine whether there has been an actual dislodgement of the reference catheter, and, if so, an appropriate signal (e.g., an audible or visual warning) may be generated. Upon dislodgement, guidance may be provided to aid the practitioner in restoring the reference catheter to its initial location.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 16, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Lev A. Koyrakh, Jeffrey A. Schweitzer, Daniel R. Starks, Carlos Carbonera
  • Patent number: 10945633
    Abstract: A method for providing a localization system with detailed information regarding a catheter's construction, while at the same time preventing operator input errors, for use in a three-dimensional localization field, including providing a catheter having at least one feature, providing a catheter catalog for use by the localization system, wherein the catheter catalog comprises reference data relating to features of the catheter, placing the catheter into the localization field, creating a map with the localization field, locating the catheter on the map, and correlating features of the catheter within the localization field with measurements made by the localization system when the feature is at various locations.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 16, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Luke Y. Chen, Eric S. Olson
  • Patent number: 10939964
    Abstract: Systems for detecting when catheter electrodes enter into and exit from an introducer are disclosed. In one form, a system detects a relative position of a catheter (comprising a marker band and an electrode) and an introducer (comprising a proximity sensor adapted to sense the marker band), while the catheter and introducer are in a human body. The system may comprise an electronic control unit to analyze signals from the catheter and/or the introducer, to determine whether the catheter electrode is within the introducer; and to disregard data collected from the electrode when that electrode is in the introducer. The sensor may be on the catheter and the sensed element may be on the introducer. The sensed element may comprise one or several marker bands. A marker band may be applied during the manufacture of a medical device or during its use and is any element capable of electromagnetic detection.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: March 9, 2021
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Daniel J. Potter, Lev A. Koyrakh