公开(公告)号：US20240342469A1

公开(公告)日：2024-10-17

申请号：US18754711

申请日：2024-06-26

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： Saurav Paul ,  Troy T. Tegg ,  Israel A. Byrd ,  Riki Thao ,  Harry A. Puryear ,  Linda Nemec

IPC: A61N1/32 ,  A61B18/00 ,  A61B18/14

CPC classification number: A61N1/327 ,  A61B18/14 ,  A61B2018/0016

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. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.

公开(公告)号：US12089890B2

公开(公告)日：2024-09-17

申请号：US17193859

申请日：2021-03-05

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： Steven C. Christian ,  Theodore A. Johnson

IPC: A61B18/12 ,  A61B18/14 ,  A61B18/00 ,  A61B18/02 ,  A61B18/06 ,  A61B18/08 ,  A61B18/18 ,  A61B18/24 ,  A61B34/20

CPC classification number: A61B18/1492 ,  A61B2018/00029 ,  A61B2018/00357 ,  A61B2018/00648 ,  A61B2018/00702 ,  A61B2018/00744 ,  A61B2018/00761 ,  A61B2018/00791 ,  A61B2018/00863 ,  A61B2018/0212 ,  A61B18/06 ,  A61B18/082 ,  A61B2018/1861 ,  A61B18/24 ,  A61B2034/2053 ,  A61B2218/002 ,  F04C2270/041

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.

公开(公告)号：US12082874B2

公开(公告)日：2024-09-10

申请号：US16848599

申请日：2020-04-14

Applicant: St Jude Medical, Atrial Fibrillation Division, Inc

Inventor： Huisun Wang ,  Christopher J. Geurkink

IPC: A61B18/14 ,  A61M25/00 ,  A61B17/00 ,  A61B18/00

CPC classification number: A61B18/1492 ,  A61M25/0069 ,  A61M25/007 ,  A61B2017/00084 ,  A61B2017/00088 ,  A61B2017/00092 ,  A61B2018/00011 ,  A61B2018/00029 ,  A61B2018/00577 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00809 ,  A61B2018/00815 ,  A61B2018/00821 ,  A61B2218/002 ,  Y10T29/49826

Abstract: An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis.

公开(公告)号：US20240173073A1

公开(公告)日：2024-05-30

申请号：US18534123

申请日：2023-12-08

Applicant: St. Jude Medical, Atrial Fibrillation Division Inc.

Inventor： Huisun Wang ,  Sacha C. Hall

IPC: A61B18/14 ,  A61B18/00

CPC classification number: A61B18/1492 ,  A61B2018/00035 ,  A61B2018/00101 ,  A61B2018/00791 ,  A61B2018/1472

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″.

公开(公告)号：US11839424B2

公开(公告)日：2023-12-12

申请号：US15911908

申请日：2018-03-05

Applicant: St. Jude Medical, Atrial Fibrillation Division Inc

Inventor： Reed R. Heimbecher ,  Saurav Paul ,  John M. Berns ,  Jeffrey A. Schweitzer

IPC: A61B18/14 ,  A61B90/00 ,  A61B34/30 ,  A61B18/18 ,  A61B18/00

CPC classification number: A61B18/1492 ,  A61B34/30 ,  A61B90/04 ,  A61B18/18 ,  A61B2018/0022 ,  A61B2018/00285 ,  A61B2018/00642 ,  A61B2018/00696 ,  A61B2018/00714 ,  A61B2018/00779 ,  A61B2018/00869 ,  A61B2018/00875 ,  A61B2018/00898 ,  A61B2018/00904 ,  A61B2034/301

Abstract: A monitoring, managing and protecting system is provided that includes a monitoring probe working in conjunction with an ablating device. The probe is configured to be positioned in close proximity to a region of non-targeted tissue proximate an ablation site of targeted tissue and to be operatively connected to an electrical response assessment system or component. The probe includes an elongate shaft having proximal and distal ends, with a handle disposed at the proximal end thereof and a tissue monitoring and protecting apparatus disposed at the distal end thereof. The ablating device includes an elongate shaft having proximal and distal ends, with a handle mounted at the proximal end thereof and an ablation element mounted at the distal end thereof. The monitoring probe measures electrical characteristics of the non-targeted tissue and/or of the tissue between the monitoring electrode and the ablation electrode. The electrical response assessment system determines whether the tissue is being damaged based on the electrical measurements. The monitoring, managing and protecting system can notify a practitioner based on the determination, or modify or stop the ablation procedure.

公开(公告)号：US20230240577A1

公开(公告)日：2023-08-03

申请号：US18189323

申请日：2023-03-24

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： John A. Hauck

IPC: A61B5/24 ,  A61B5/06 ,  A61B5/00 ,  A61B18/14 ,  A61B5/0538 ,  A61B90/00

CPC classification number: A61B5/24 ,  A61B5/063 ,  A61B5/0538 ,  A61B5/6843 ,  A61B5/6857 ,  A61B5/6885 ,  A61B18/1492 ,  A61B90/06 ,  A61B2018/00875

Abstract: A system and method for assessing contact between a medical device and tissue may comprise an electronic control unit (ECU) configured to be coupled to a medical device, the medical device comprising a first electrode and a second electrode. The ECU may be further configured to select the first electrode as an electrical source and the second electrode as an electrical sink, to cause an electrical signal to be driven between the source and sink, to detect respective electric potentials on the first electrode and the second electrode while the electrical signal is driven, and to determine an impedance respective of one of the first electrode and the second electrode according to both of the respective electric potentials.

公开(公告)号：US11696716B2

公开(公告)日：2023-07-11

申请号：US15155277

申请日：2016-05-16

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： Troy T. Tegg ,  Richard E. Stehr

IPC: A61B18/14 ,  A61B5/00 ,  A61B5/283 ,  A61B18/00 ,  A61B90/00 ,  A61B17/00

CPC classification number: A61B5/283 ,  A61B5/6858 ,  A61B18/1492 ,  A61B2017/00867 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00642 ,  A61B2018/00839 ,  A61B2090/065 ,  A61B2218/002 ,  C08L2201/12

Abstract: Catheter systems and methods are disclosed. An exemplary catheter includes an outer tubing housing and an inner fluid delivery tubing, the inner fluid delivery tubing having at least one fluid delivery port. The catheter also includes a deployment member movable axially within the inner fluid delivery tubing. A plurality of splines are each connected at a proximal end to the outer tubing and at a distal end to deployment member. A seal is provided between the outer tubing and the inner fluid delivery tubing. A gasket is provided between the deployment member and the inner fluid delivery tubing. Both the seal and the gasket are configured to prevent blood or other fluid from ingressing into the outer tubing.

公开(公告)号：US11596470B2

公开(公告)日：2023-03-07

申请号：US16543277

申请日：2019-08-16

Applicant: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.

Inventor： Carlo Pappone ,  Alan de la Rama ,  Peter Chen ,  Cary Hata

IPC: A61B18/14 ,  A61M25/00 ,  A61M25/10 ,  A61B18/00

Abstract: A fluid delivery catheter configured to allow optimal fluid distribution through each electrode by varying the diameter of a catheter lumen is disclosed. Uniform or different fluid flow rates through longitudinally spaced apart elution holes may be achieved. Exemplary fluids for use with the catheter include a cooling fluid, a therapeutic fluid, and a medication.

公开(公告)号：US20220338922A1

公开(公告)日：2022-10-27

申请号：US17721349

申请日：2022-04-14

Applicant: St. Jude Medical, Atrial Fibrillation Division Inc

Inventor： D. Curtis Deno ,  Stephan P. Miller

IPC: A61B18/14 ,  A61B5/00 ,  A61B5/06 ,  A61B90/00

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.

公开(公告)号：US11419673B2

公开(公告)日：2022-08-23

申请号：US15003535

申请日：2016-01-21

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： James V. Kauphusman ,  Allan M. Fuentes ,  Troy T. Tegg ,  Dale E. Just

IPC: A61B18/14 ,  A61B5/00 ,  A61B5/283 ,  A61B5/287 ,  A61M25/01 ,  A61B18/18 ,  A61B18/00 ,  A61N7/02 ,  A61B17/00

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.