Electrode Placed In Or On Heart Patents (Class 600/374)
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Publication number: 20130303872Abstract: An injectable leadless heart stimulation and/or monitoring system is provided that includes an device having a sealed housing, one or more electrodes configured to electrically contact heart tissue when in use and electric components arranged within the housing. The electric components are at least in part operationally connected to the at least one electrode. The electric components include a power supply for providing power to the electric components. The power supply includes a rechargeable battery and further includes an implant-based coil that is configured to receive electric power via a tuned magnetic or electromagnetic field.Type: ApplicationFiled: May 8, 2013Publication date: November 14, 2013Applicant: BIOTRONIK SE & CO.KGInventors: Brian Taff, Jeffrey A. von Arx, Hannes Kraetschmer
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Patent number: 8583260Abstract: The present invention is an electrophysiology, RF ablation, or similar catheter (i.e., catheter or sheath) that includes an actuator that significantly increases the length of travel (i.e., steering travel) of the actuation wires, as compared to the length of travel provided by prior art actuators. The catheter includes a hollow flexible tubular body, a pair of actuation wires disposed in a side-by-side relationship in the body, a handle attached to a proximal end of the body, an actuator pivotally mounted to the handle, an arcuate internal gear rack disposed on the actuator, one or more pulleys pivotally mounted on the handle and coaxially coupled to a pinion gear engaged with the gear rack, and a guide block mounted within the handle. The one or more pulleys include a first channel in which the first actuation wire resides and a second channel in which the second actuation wire resides. The actuation wires pass through holes in the guide block, which aligns the wires into their respective channels.Type: GrantFiled: December 28, 2004Date of Patent: November 12, 2013Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventor: John C. Knudson
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Publication number: 20130296679Abstract: Systems and methods for assessing electrode position, including positioning a plurality of electrodes within a heart and proximate a pulmonary vein; obtaining an impedance measurement from each of the plurality of electrodes; determining whether any of the plurality of electrodes is located within the pulmonary vein based at least in part on the obtained impedance measurements; and generating an indication if at least one of the plurality of electrodes is determined to be located within the pulmonary vein.Type: ApplicationFiled: May 1, 2012Publication date: November 7, 2013Applicant: MEDTRONIC ABLATION FRONTIERS LLCInventors: Catherine R. CONDIE, Marshall L. SHERMAN, Mark T. STEWART
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Patent number: 8577455Abstract: A method and device for detecting arrhythmias in a patient that includes electrodes positioned subcutaneously within the patient, a microprocessor, coupled to the electrodes, determining one of a sequence of the sensing of cardiac signals by the electrodes and a duration between the sensing of cardiac signals by the electrodes, and control circuitry delivering a therapy in response to one of the determined sequence and the determined duration.Type: GrantFiled: January 18, 2005Date of Patent: November 5, 2013Assignee: Medtronic, Inc.Inventors: Raul D. Mitrani, Peter P. Tarjan, Jeffrey M. Gillberg
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Patent number: 8577439Abstract: A system for positioning electrodes on a patient body includes an image capturing system, a memory device, a processing system and an indicator system. The image capturing system generates an actual image of the patient body. The memory device stores a reference image, the reference image including a reference body and a reference position on the reference body. The processing system compares the actual image and the reference image and for determining an electrode position on the patient body by matching the reference position on the reference body. The indicator system indicates the electrode position on the patient body.Type: GrantFiled: September 3, 2007Date of Patent: November 5, 2013Assignee: Koninklijke Philips N.V.Inventors: Robert Pinter, Jens Muehlsteff, Guido Josef Muesch
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Publication number: 20130289379Abstract: An implantable medical device that includes an elongated lead body having an outer surface and a first opening along the outer surface, a first sensor positioned along the lead body and configured to receive first acoustic signals through the first opening of the lead body and generate an electrical signal representative of sounds produced at a first targeted location along a patient's cardiovascular system, and a processor configured to determine an intensity of the first acoustic signals, and determine changes in blood pressure in response to the determined intensity.Type: ApplicationFiled: March 12, 2013Publication date: October 31, 2013Inventors: Zhendong Song, Xiaohong Zhou
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Publication number: 20130289377Abstract: An implantable medical device system includes an elongated lead body carrying a hydrophone. In some embodiments, the elongated lead body has outer surface and an opening along the outer surface. The hydrophone is configured to receive acoustical signals through the opening of the lead body and generate an electrical signal representative of sounds produced at a targeted location along a patient's cardiovascular system. In some examples, the lead body outer surface has a shaped contour for directing the opening for receiving the sounds from a direction of the targeted location. A processor is enabled to receive signals from the hydrophone and detect a cardiac condition in response to the signals.Type: ApplicationFiled: March 12, 2013Publication date: October 31, 2013Applicant: MEDTRONIC, INC.Inventors: Zhendong Song, Xiaohong Zhou
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Publication number: 20130289378Abstract: An implantable medical device that includes an elongated lead body having an outer surface and an opening along the outer surface, a first sensor positioned along the lead body and configured to receive acoustic signals through the opening of the first lead body and generate an electrical signal representative of sounds produced at a targeted location along a patient's cardiovascular system, and a processor configured to detect change in an S-T segment of sensed cardiac signals, and receive the acoustic signal and determine whether the sensed cardiac signals correspond to one of acute myocardial infarct and myocardial ischemia in response to the detected change.Type: ApplicationFiled: March 12, 2013Publication date: October 31, 2013Inventors: Zhendong Song, Xiaohong Zhou
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Patent number: 8571626Abstract: Catheters and methods for obtaining monophasic action potential (“MAP”) electrograms include a flexible catheter body defining a longitudinal axis, and a distal assembly affixed to the catheter body distal end defining a distal tip. The distal assembly has at least three MAP recording electrodes, and at least one reference electrode for determining reference potential. The recording electrodes are each positioned a radial distance from the longitudinal axis in at least three different radial directions, defining a recording geometry substantially having radial symmetry. The reference electrode is a longitudinal distance from the recording geometry. Optional features include a steerable catheter shaft, one or more radio-frequency ablation electrodes, and a dedicated pacing electrode. Different possible embodiments include a dome housing having the recording electrodes in a fixed spatial arrangement, and a distal loop assembly having an array of electrodes on at least three flexible loop elements.Type: GrantFiled: September 5, 2012Date of Patent: October 29, 2013Assignee: Medtronic Ablation Frontiers LLCInventors: Michael Lau, Randell L. Werneth, Timothy J. Corvi, Sumita Bhola, Mark T. Stewart, Michel Haissaguerre, Meleze Hocini
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Patent number: 8565857Abstract: The present invention relates to a catheter (6) comprising: a connector (65, 66) at a proximal side of the catheter for connecting the catheter to an external signal transmission/receiving unit (10) for transmitting and/or receiving signals, an electrode (63, 64) at a distal side of the catheter, and an electrical connection including an electrical wire (61, 62) for electrically connecting the electrode and the connector for the transmission of signals between the electrode and the connector, wherein the electrical connection has a high electrical resistance of at least 1 k?, in particular of at least 5 k?. Thus, the present invention provides a solution to prevent excessive heating during EP interventions under MR guidance by using highly resistive wires and or lumped resistors as connections within catheters.Type: GrantFiled: September 7, 2007Date of Patent: October 22, 2013Assignee: Koninklijke Philips N.V.Inventors: Oliver Lips, Bernd David, Bernhard Gleich, Sascha Krueger, Steffen Weiss, Daniel Wirtz
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Patent number: 8565851Abstract: Catheters and methods for obtaining monophasic action potential (“MAP”) electrograms include a flexible catheter body defining a longitudinal axis, and a distal assembly affixed to the catheter body distal end defining a distal tip. The distal assembly has at least three MAP recording electrodes, and at least one reference electrode for determining reference potential. The recording electrodes are each positioned a radial distance from the longitudinal axis in at least three different radial directions, defining a recording geometry substantially having radial symmetry. The reference electrode is a longitudinal distance from the recording geometry. Optional features include a steerable catheter shaft, one or more radio-frequency ablation electrodes, and a dedicated pacing electrode. Different possible embodiments include a dome housing having the recording electrodes in a fixed spatial arrangement, and a distal loop assembly having an array of electrodes on at least three flexible loop elements.Type: GrantFiled: July 31, 2009Date of Patent: October 22, 2013Assignee: Medtronic Ablation Frontiers LLCInventors: Michael Lau, Randell Werneth, Timothy J. Corvi, Sumita Bhola, Mark T. Stewart, Michel Haïssaguerre, Meleze Hocini
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Publication number: 20130274582Abstract: 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: ApplicationFiled: December 20, 2011Publication date: October 17, 2013Inventors: Valtino X. Afonso, Jiazheng Shi, Steven J. Kim, D. Curtis Deno, Dennis J. Morgan
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Patent number: 8560086Abstract: 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: GrantFiled: December 2, 2010Date of Patent: October 15, 2013Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Dale E. Just, Troy T. Tegg, Theodore A. Johnson, Sasha C. Hall
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Patent number: 8560042Abstract: A system to determine and illustrate a location of position element within a volume is disclosed. The position element can be used to determine the position of a portion of an instrument. The instrument can include one or both of a cannulated member and a lead member passed through the cannula.Type: GrantFiled: March 20, 2012Date of Patent: October 15, 2013Assignee: Medtronic, Inc.Inventors: H. Toby Markowitz, Pooja Mehta, Eduardo N. Warman, Phillip Falkner, Ioana Fleming
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Patent number: 8548603Abstract: A medical device for placing a medical lead in the human body using minimally invasive techniques is described. One lead includes a lead body connected to a lead head having an aperture for providing fiber optic access to the interior of a helical electrode. The fiber optic shaft may be disposed within or along-side a drive shaft releasably coupled to the head to rotate the head. The drive shaft and lead body may be delivered using a delivery catheter. The delivery catheter can be advanced though a small incision to the target tissue site, and the site remotely visualized through the fiber optic scope extending through the lead head aperture. Some catheters include a distal mapping electrode readable from the catheter proximal portion or handle. The lead head can be rotated, rotating the helical electrode into the tissue, and the catheter, drive shaft, and fiber optic probe removed.Type: GrantFiled: November 29, 2010Date of Patent: October 1, 2013Assignee: Greatbatch Ltd.Inventors: John M. Swoyer, Allison M. Kidder, Jeffrey Zweber, Scott Brainard, Valerie Glazier
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Patent number: 8545414Abstract: Methods and devices for modulating heart valve function are provided. In the subject methods, a heart valve is first in structurally modified. Blood flow through the structurally modified heart valve is then monitored, and the heart is paced in response to the monitored blood flow. Also provided are devices, systems and kits that find use in practicing the subject methods. The subject methods find use in a variety of applications.Type: GrantFiled: April 29, 2005Date of Patent: October 1, 2013Assignee: St. Jude Medical, Cardiology Division, Inc.Inventors: Peter J. Fitzgerald, Ali Hassan, Brian K. Courtney, Nicolas A. F. Chronos, Richard G. Cartledge, Leonard Y. Lee
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Publication number: 20130253298Abstract: A multi electrode catheter for non contact mapping of the heart having independent articulation and deployment features.Type: ApplicationFiled: April 23, 2013Publication date: September 26, 2013Applicant: Rhythmia, Medical, Inc.Inventors: Doron Harlev, Justin Callaway
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Patent number: 8540662Abstract: A kit for the diagnosis or treatment of tissue in a body cavity includes an introducer and a catheter insertable through the lumen of the introducer having a proximal segment, a working segment and a flexible distal tip segment. The flexible distal tip segment is located adjacent the distal end of the working segment and includes a proximal end, a distal end and a pre-formed bend or curve that permits the catheter to exit the introducer in a lateral direction relative to the introducer body to prevent inadvertent damage to the tissue during a medical procedure. All or part of the working segment and the flexible distal tip segment may be adhesive-filled. The catheter may also include a plurality of sensing and/or energy delivery elements on the working segment and a shape-memory wire terminating at the distal end of the working segment. Methods of use and methods of manufacturing are also described.Type: GrantFiled: March 24, 2009Date of Patent: September 24, 2013Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Richard E. Stehr, Martin M. Grasse, Allan M. Fuentes
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Patent number: 8538501Abstract: A mapping and ablation catheter system including a radio frequency ablation source having an output, a mapping device, a catheter, and two or more capacitive components. The catheter may include two or more catheter electrodes, wherein two of the two or more catheter electrodes may be electrically coupled to the mapping device. Each of the two or more catheter electrodes may be electrically coupled to a capacitive component, wherein each capacitive component may be electrically coupled to the output of the radio frequency ablation source such that energy delivered to each catheter electrode of the two or more catheter electrodes passes through the capacitive component.Type: GrantFiled: January 9, 2009Date of Patent: September 17, 2013Assignee: Mayo Foundation for Medical Education and ResearchInventors: Kalpathi Venkatachalam, Samuel J. Asirvatham
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Publication number: 20130237791Abstract: The disclosure relates to a variety of systems and methods for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region. Wherein the system includes a first catheter that has an expandable member, an ablation element, and a lumen configured to allow a second catheter therethrough. The second catheter includes a distal section in a ring shape and a plurality of electrodes coupled around the ring. Optionally a second lumen can be included through the first catheter that allows for contrast media to be delivered to the distal end of the system.Type: ApplicationFiled: February 27, 2013Publication date: September 12, 2013Applicant: ST. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Peter C. Chen, Alan de la Rama, Cary K. Hata, Vivian Tran
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Publication number: 20130237792Abstract: A method and apparatus for detection of changes in impedance a patient that includes generating measured impedances, generating an adaptive baseline trend of the measured impedances corresponding to a first time period, generating a short term trend of the measured impedances corresponding to a second time period less than the first time period, determining changes in relative position of the short term trend and the baseline trend, the determined changes in relative position corresponding to determining intersecting of the baseline trend by the short term trend, determining differences between the baseline trend and calculated period average impedances, and accumulating, in response to determining no intersecting of the baseline trend by the short term trend, the determined differences between the baseline trend and the calculated period average impedances.Type: ApplicationFiled: April 22, 2013Publication date: September 12, 2013Applicant: Medtronic, Inc.Inventors: Robert W. Stadler, Li Wang
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Patent number: 8532733Abstract: The medical lead delivery device more easily and quickly delivers a lead to or through the coronary vein of a patient's heart. The medical lead delivery device includes an elongated body, a controller, a first and second spring, and a sleeve. The elongated body includes a proximal end and a distal end. The controller is disposed at the proximal end and provides enhanced control of the distal tip of the elongated body.Type: GrantFiled: August 23, 2007Date of Patent: September 10, 2013Assignee: Medtronic, Inc.Inventors: Ryan Thomas Bauer, Pedro A. Meregotte, John L. Sommer, John B. Horrigan, Patrick P. Senarith, H. Allan Steingisser
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Patent number: 8532734Abstract: An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data.Type: GrantFiled: April 9, 2009Date of Patent: September 10, 2013Assignees: Regents of the University of Minnesota, Medtronic, Inc.Inventors: H. Toby Markowitz, Sean Campbell-Massa, Phillip Falkner, Ioana Fleming, Chad Giese, Mustafa Karamanoglu, Michael Kryger, Karl Evan Nowak, Pooja Mehta, James Steeves, Lane A. Phillips, Shangqian Peter Zhang, Steven L. Waldhauser, David Scanlon, Brian Houston Craig, Eduardo N. Warman, Koen Michels, Marie P. Smith, Noelle Christine Hurtig, Olaf Eick, Rogier Receveur, Vincent Larik, Brent Chelgren, Victoria Interrante
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Patent number: 8527027Abstract: An apparatus for mapping and/or ablating tissue includes a braided conductive member that that may be inverted to provide a ring-shaped surface. When a distal tip of the braided conductive member is retracted within the braided conductive member, the lack of a protrusion allows the ring-shaped surface to contact a tissue wall such as a cardiac wall. In an undeployed configuration, the braided conductive member is longitudinally extended, and in a deployed configuration, the distal end of the braided conductive member is retracted to invert the braided conductive member.Type: GrantFiled: April 26, 2012Date of Patent: September 3, 2013Assignee: C.R. Bard, Inc.Inventors: Gary S. Falwell, Erik Brown
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Patent number: 8521306Abstract: A pacing lead for a left cavity of the heart, implanted in the coronary system. One lead includes a telescopic microcable including multiple distinct bare areas that form a network of stimulation electrodes. The microcable includes a diameter providing for insertion of the microcable within smaller portions of the coronary vein system. The diameter may be selected from between 0.5 and 2 French. The microcable includes multiple strands twisted together. At least some strands incorporate either a core of radiopaque material wrapped by a sheath of mechanically durable material, or vice-versa. The bare areas that form the network of stimulation electrodes are provided on outward-facing portions of at least some of the strands.Type: GrantFiled: November 18, 2011Date of Patent: August 27, 2013Assignee: Sorin CRM S.A.S.Inventor: Jean-Francois Ollivier
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Publication number: 20130217992Abstract: An electrode device, in particular for cardiovascular applications, includes an elongated electrode body made from an insulating material, a plurality of electrodes for detecting electrocardiological signals and/or for outputting electrocardiological stimulus signals, and supply line, in particular non-elastic cables or strands, which serve for electrically connecting the electrodes, which supply lines are guided in each case in the electrode body, preferably in associated lumina. Furthermore, a compensating hose section is provided which is inserted in a parting point in the electrode and has a maximum outer diameter that corresponds to the electrode body, wherein helically shaped receptacles, for each supply line, are incorporated in the compensating hose section, and the compensating hose section, at its joining sides facing toward the electrode body, is connected in a hermetically sealed manner to the electrode body.Type: ApplicationFiled: January 23, 2013Publication date: August 22, 2013Applicant: BIOTRONIK SE & CO. KGInventor: BIOTRONIK SE & CO. KG
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Patent number: 8509872Abstract: A picafina device that is an electrode for measurement of neuron electrical activity where the number of measurement points is very large, and methods of selecting a subset of available measuring electrodes on the surface of the device. The device can keep the selection for a predetermined length of time, or for an indefinite length of time, both under control of the researcher or the neurosurgeon. Selecting a different measuring pad, or a combination of pads, is equivalent to making measurement at a different location or on a nearby neuron. Several parallel measurements can be made, in which case correlations can be made between the firing of different neurons.Type: GrantFiled: November 14, 2012Date of Patent: August 13, 2013Inventors: Chong Il Lee, Sergio Lara Pereira Monteiro
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Patent number: 8504132Abstract: Embodiments of the invention relate to methods for assessing and/or improving contact between an electrophysiology catheter and tissue, and catheters for performing the methods. One embodiment relates to a catheter comprising a braided conductive member coupled to the distal end of a shaft, wherein the braided conductive member comprises a plurality of pressure sensitive wires. Another embodiment relates to a catheter comprising a braided conductive member having a plurality of sectors and coupled to the distal end of a shaft, and a balloon assembly constructed and arranged to selectively apply distal pressure to one or more sectors of the braided conductive member.Type: GrantFiled: June 28, 2007Date of Patent: August 6, 2013Inventors: Paul Friedman, Charles J. Bruce, Ryan Amara, Jeremiah Johnson, Peter D. Kozel
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Patent number: 8504133Abstract: A system for sensing multiple local electric voltages from endocardial surface of a heart, includes: an elongate tubular member; a plurality of flexible splines having proximal portions, distal portions and medial portions therein between; an anchor for securably affixing the proximal portions of the splines; an atraumatic tip for securably affixing the distal portions of the splines; and a polymeric member including opposed a first open end and a second open end defining an open lumen therein between and an inner member surface and an outer member surface, wherein at least one of the plurality of flexible splines is at least partially disposed within the lumen of the polymeric member; a flexible electrode assembly strip with one or more exposed electrodes disposed on at least a portion of the outer surface of the polymeric member.Type: GrantFiled: November 28, 2012Date of Patent: August 6, 2013Assignee: Topera, Inc.Inventors: Thomas F. Kordis, Eric T. Johnson, Philip C. Burke, Darrin J. Kent, Kevin M. Magrini, Jeff A. Burke, Robert Ryan Ragland
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Patent number: 8504172Abstract: An operating room connector is used in conjunction with a multiple electrode SCS system which can easily detach and connect to an external trial stimulator (ETS). By connecting the electrode SCS system to a stylet handle, and then locking the stylet handle within a slot of the connector platform, a user is able to minimize the required steps in connecting the ETS to the implanted SCS lead system. The ETS can then be used to readjust the position of the electrode array(s) previously implanted to deliver an optimal stimulation therapy.Type: GrantFiled: July 6, 2012Date of Patent: August 6, 2013Assignee: Boston Scientific Neuromodulation CorporationInventors: Kenny Kinyen Chinn, Carla Mann Woods, Stephen L. Goldman
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Publication number: 20130197337Abstract: An electrophysiology catheter introduced through the groin and inferior vena cava into the right side of the heart comprises an elongate flexible shaft having a steerable distal section and a prolapsing section located proximally of the distal section. The distal section is inserted into the coronary sinus and a back-steering force is applied to the catheter to anchor the distal section therein, after which the catheter is further advanced to prolapse the prolapsing section against the high right atrium. Electrical pathways in both the coronary sinus and the high right atrium are mapped using respective electrode pairs carried on the distal and prolapsing sections of the catheter.Type: ApplicationFiled: April 16, 2013Publication date: August 1, 2013Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventor: BOSTON SCIENTIFIC SCIMED, INC.
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Patent number: 8498686Abstract: A mapping catheter adapted for use in a heart chamber, has a distal mapping assembly with a spiral ribbon that is radially expandable and contractable by means of an expander so that electrodes on the ribbon can contact heart wall at a plurality of locations simultaneously. The expander extends the length of the catheter between a control handle and a distal end of the spiral ribbon. The expander can be controlled directly at its proximal end by a user or the expander can be responsive to a puller wire controlled by a user interface on the control handle.Type: GrantFiled: October 4, 2011Date of Patent: July 30, 2013Assignee: Biosense Webster (Israel), Ltd.Inventor: Debby Grunewald
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Publication number: 20130190587Abstract: A medical device system is disclosed including a high-density arrangement of transducers, which may be configured to ablate, stimulate, or sense characteristics of tissue inside a bodily cavity, such as an intra-cardiac cavity. High-density arrangements of transducers may be achieved, at least in part, by overlapping elongate members on which the transducers are located, and varying sizes, shapes, or both of the transducers, especially in view of the overlapping of the elongate members. Also, the high-density arrangements of transducers may be achieved, at least in part, by including one or more recessed portions in an elongate member in order to expose one or more transducers on an underlying elongate member in a region adjacent an elongate-member-overlap region.Type: ApplicationFiled: March 11, 2013Publication date: July 25, 2013Applicant: KARDIUM INC.Inventor: KARDIUM INC.
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Patent number: 8494608Abstract: An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data.Type: GrantFiled: April 9, 2009Date of Patent: July 23, 2013Assignee: Medtronic, Inc.Inventors: H. Toby Markowitz, Mustafa Karamanoglu, Pooja Mehta, Ioana Fleming, David Scanlon, Michael Kryger, Sean Campbell-Massa, Chad Giese, Steven L. Waldhauser, Shangqian Peter Zhang, Jeff Jannicke, Phillip Falkner, Don Hefner, Eduardo N. Warman, James Steeves, Rogier Receveur, Koen Michels, Olaf Eick, Vincent Larik
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Publication number: 20130184550Abstract: An implantable medical lead (1) comprises multiple electrodes (22, 24, 26, 28) arranged at a distal end (2), multiple electrode terminals (32, 34, 36, 38) at a proximal end (3) and a lead body (4) with an insulating tubing (40). A conductor coil (10) comprises a coiled tubular insulator (19) having multiple separate lumens (12, 14, 16, 18). Each lumen (12, 14, 16, 18) houses a respective conductor (11, 13, 15, 7), which is movable in the lumen (12, 14, 16, 18) relative the coiled tubular insulator (19). The conductor coil (10) is arranged in a bore (42) of the insulating tubing (40) and each conductor (11, 13, 15, 7) is electrically connected to one of the electrodes (22, 24, 26, 28) and one of the electrode terminals (32, 34, 36, 38).Type: ApplicationFiled: September 19, 2011Publication date: July 18, 2013Applicant: ST. JUDE MEDICAL ABInventors: Mikael Forslund, Andreas Ornberg
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Patent number: 8489171Abstract: A cardiac navigation system including a mapping catheter, a control system coupled to the mapping catheter, an electrode array, and means for driving an electrical current across the electrode array. The mapping catheter includes means for sensing an electrical field. The control system includes means for receiving sensed signals from the mapping catheter. The cardiac navigation system includes at least one electrode array including means for providing an electrical field across three axes. The three axes are approximately orthogonal with respect to one another. The means for driving an electrical current across the three axes includes means for providing a plurality of individual current sources to the electrode array.Type: GrantFiled: April 29, 2011Date of Patent: July 16, 2013Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: John A. Hauck, James C. Baker
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Publication number: 20130172715Abstract: 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: ApplicationFiled: December 30, 2011Publication date: July 4, 2013Inventors: Dale E. Just, Troy T. Tegg, Theodore A. Johnson
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Patent number: 8475450Abstract: Cardiac catheters, including a lasso catheter, are provided for use in a system for electrical mapping of the heart has an array of raised, perforated electrodes, which are in fluid communication with an irrigating lumen. There are position sensors on a distal loop section and on a proximal base section of the catheter. The electrodes are sensing electrodes that may be adapted for pacing or ablation. The raised electrodes securely contact cardiac tissue, forming electrical connections having little resistance.Type: GrantFiled: December 30, 2008Date of Patent: July 2, 2013Assignee: Biosense Webster, Inc.Inventors: Assaf Govari, Athanassios Papaioannou, Christopher Beeckler
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Patent number: 8475445Abstract: A method and system for choosing suitable sites for catheter delivery ablative energy is provided that includes a catheter/ablation structure that is positioned on a potential ablation site on a heart. The catheter/ablation structure produces one or more electrograms recorded at the potential ablation site. A signal processing unit receives from the catheter/ablation structure the recorded one or more intercardiac electrograms from the potential ablation site and performing Fast Fourier Transform (FFT) on the recorded one or more intercardiac electrograms as so to produce one or more spectral power distributions of the potential ablation site. A display unit displays the one or more spectral power distributions so as to determine whether the potential RF ablation site exhibit necessary spectral properties for the delivery of the ablative energy. A ablative energy generator unit provides the ablative energy to the potential ablation site using the catheter/ablation structure.Type: GrantFiled: December 1, 2009Date of Patent: July 2, 2013Inventors: Daniel Soroff, David Kaczka
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Publication number: 20130165755Abstract: A processor circuit can be configured to obtain a first multidimensional vector. The first multidimensional vector can include dimensions corresponding to respective first conductivity characteristics obtained from different implantable electrode configurations associated with a subject. The processor circuit can also be configured to obtain a second multidimensional vector or vector space. The second multidimensional vector or vector space can include dimensions corresponding to respective second conductivity characteristics obtained from such different electrode configurations associated with the same or a different subject. The processor circuit can also provide a physiological status indicator that can be obtained at least in part by performing a vector comparison of the first multidimensional vector to the second multidimensional vector space or vector.Type: ApplicationFiled: December 21, 2012Publication date: June 27, 2013Inventors: Pramodsingh Hirasingh Thakur, John D. Hatlestad, Ramesh Wariar, Viktoria A. Averina, Lynne E. Swanson
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Patent number: 8473023Abstract: A catheter for mapping and/or ablating continuous linear or circumferential lesions at the intersection of a generally flat structure, such as the left atrium, and the ostium of generally cavernous regions of the heart, including pulmonary vein and the pulmonary venous antrum, comprises a catheter body with an intermediate section that is connected to a tip assembly by a highly flexible section. The intermediate section has at its distal end a preformed section, e.g., a curve, the intermediate section being deflectable in a direction opposite to the curve. The highly flexible section presets the tip assembly at an off-axis and/or off-plane angles from the preformed section. Accordingly, the preformed section is adapted to sit in the region and the preset angles of the ablation assembly enable contact with surrounding tissue.Type: GrantFiled: November 24, 2009Date of Patent: June 25, 2013Assignee: Biosense Webster, Inc.Inventors: Seth J. Worley, Shiva Sharareh
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Publication number: 20130150695Abstract: A medical implant comprising a transducer element which induces mechanical vibrations of the implant when electrically and/or magnetically controlled.Type: ApplicationFiled: December 3, 2012Publication date: June 13, 2013Applicant: BIOTRONIK SE & CO. KGInventor: Biotronik SE & Co. KG
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Patent number: 8463398Abstract: An implantable medical lead having a modified electrode surface for imparting current density directionality within an electrode is disclosed. An implantable medical lead includes a lead body having a proximal section and a distal section having a pre-biased shape configured to secure the lead to an inner wall of a blood vessel. An electrode coupled to the distal section of the lead body includes a number of surface features on an inactive portion of the electrode that impart a current density directionality towards an active portion of the electrode that contacts the inner wall of the vessel. Methods for imparting current density directionality within an implantable lead electrode are also disclosed.Type: GrantFiled: November 15, 2010Date of Patent: June 11, 2013Assignee: Cardiac Pacemakers, Inc.Inventors: Timothy R. Jackson, Joseph Schroeder
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Patent number: 8447377Abstract: A multi electrode catheter for non contact mapping of the heart having independent articulation and deployment features.Type: GrantFiled: November 4, 2011Date of Patent: May 21, 2013Assignee: Rhythmia Medical, Inc.Inventors: Doron Harlev, Justin Callaway
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Publication number: 20130123597Abstract: Methods of locating a tip of a central venous catheter (“CVC”) relative to the superior vena cava, sino-atrial node, right atrium, and/or right ventricle using electrocardiogram data. The CVC includes at least one electrode. In particular embodiments, the CVC includes two or three pairs of electrodes. Further, depending upon the embodiment implemented, one or more electrodes may be attached to the patient's skin. The voltage across the electrodes is used to generate a P wave. A reference deflection value is determined for the P wave detected when the tip is within the proximal superior vena cava. Then, the tip is advanced and a new deflection value determined. A ratio of the new and reference deflection values is used to determine a tip location. The ratio may be used to instruct a user to advance or withdraw the tip.Type: ApplicationFiled: January 9, 2013Publication date: May 16, 2013Applicant: Bard Access Systems, Inc.Inventor: Bard Access Systems, Inc.
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Publication number: 20130123598Abstract: An MRI-compatible catheter includes an elongated flexible shaft having opposite distal and proximal end portions. A handle is attached to the proximal end portion and includes an actuator in communication with the shaft distal end portion that is configured to articulate the shaft distal end portion. The distal end portion of the shaft may include an ablation tip and includes at least one RF tracking coil positioned adjacent the ablation tip that is electrically connected to an MRI scanner. The at least one RF tracking coil is electrically connected to a circuit that reduces coupling when the at least one RF tracking coil is exposed to an MRI environment. Each RF tracking coil is a 1-10 turn solenoid coil, and has a length along the longitudinal direction of the catheter of between about 0.25 mm and about 4 mm.Type: ApplicationFiled: January 10, 2013Publication date: May 16, 2013Applicant: MRI Interventions, Inc.Inventor: MRI Interventions, Inc.
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Patent number: 8442612Abstract: The invention is an electrophysiology lead body comprising two or more longitudinal elements, each having an outer surface, the longitudinal elements comprising electrical insulation material, the electrical insulation material consisting essentially of fluoropolymer; at least one conductor disposed within at least one of the longitudinal elements; and a cover consisting essentially of fluoropolymer, wherein the cover surrounds the longitudinal elements.Type: GrantFiled: October 22, 2009Date of Patent: May 14, 2013Assignee: W. L. Gore & Associates, Inc.Inventor: John Squeri
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Patent number: 8442613Abstract: An embodiment of a mapping probe assembly includes a body frame with a lumen therein. The body frame includes a catheter shaft region, a loop section and a transition region between the catheter shaft region and a loop section. A plurality of mapping electrodes are attached around the loop section. Electrical conductors extend through the lumen of the body frame to the mapping electrodes. In some embodiments, the loop section is skived, where a portion of the body frame is removed toward the interior of the loop section. The loop section has a generally planar loop, and further has a loop center. In some embodiments, the catheter shaft has an alignment generally perpendicular to the loop section where the alignment of the catheter shaft is along a line that intersects the planar loop proximate to the loop center.Type: GrantFiled: July 21, 2010Date of Patent: May 14, 2013Assignee: Boston Scientific Scimed, IncInventors: Isaac Kim, Josef Koblish
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Patent number: 8437830Abstract: The invention is an electrophysiology lead body comprising two or more longitudinal elements, each having an outer surface, the longitudinal elements comprising electrical insulation material, the electrical insulation material consisting essentially of fluoropolymer; at least one conductor disposed within at least one of the longitudinal elements; and a cover consisting essentially of fluoropolymer, wherein the cover surrounds the longitudinal elements.Type: GrantFiled: October 22, 2009Date of Patent: May 7, 2013Assignee: W. L. Gore & Associates, Inc.Inventor: John Squeri
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Publication number: 20130109945Abstract: This invention relates to the determination and/or representation of physiological information relating to a heart surface.Type: ApplicationFiled: December 18, 2012Publication date: May 2, 2013Applicant: Rhythmia Medical, Inc.Inventors: Doron Harlev, Brian Stewart