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    IRRIGATED ABLATION CATHETER HAVING A FLEXIBLE MANIFOLD
    24.
    发明申请
    IRRIGATED ABLATION CATHETER HAVING A FLEXIBLE MANIFOLD 审中-公开

    公开(公告)号：US20190175269A1

    公开(公告)日：2019-06-13

    申请号：US16216671

    申请日：2018-12-11

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

    Inventor： Huisun Wang

    IPC: A61B18/14

    CPC classification number: A61B18/1492 ,  A61B2018/00029 ,  A61B2018/00577 ,  A61B2218/002

    Abstract: An irrigated ablation catheter includes a shaft having a proximal end, a distal end, and an irrigation lumen therein. The catheter further includes an electrode assembly coupled to the distal end of the shaft. The electrode assembly includes an ablation electrode and a manifold. The manifold is coupled to each of the distal end of the shaft and the proximal end of the electrode. At least a portion of the manifold is constructed of a flexible material to allow the electrode assembly to deflect. The manifold includes a body, an inner cavity within the body configured for fluid communication with the irrigation lumen, and an irrigation port also within the body and configured for fluid communication with the inner cavity. The irrigation port extends from the inner cavity to the outer surface of the body, and is configured to allow for an irrigating fluid to be distributed from the manifold.

    SYSTEM AND METHOD FOR ASSESSING EFFECTIVE DELIVERY OF ABLATION THERAPY
    25.
    发明申请
    SYSTEM AND METHOD FOR ASSESSING EFFECTIVE DELIVERY OF ABLATION THERAPY 审中-公开

    公开(公告)号：US20190151014A1

    公开(公告)日：2019-05-23

    申请号：US16195249

    申请日：2018-11-19

    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.

    Bendable catheter arms having varied flexibility
    27.
    发明授权
    Bendable catheter arms having varied flexibility 有权

    公开(公告)号：US10285756B2

    公开(公告)日：2019-05-14

    申请号：US15232583

    申请日：2016-08-09

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

    Inventor： Sacha C. Hall ,  Dale E. Just ,  Alan de la Rama ,  Cary Hata

    IPC: A61B5/04 ,  A61B18/14 ,  A61B5/042 ,  A61B5/00 ,  A61B18/00

    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.

    Catheter with a mechanism for omni-directional deflection of a catheter shaft
    28.
    发明授权
    Catheter with a mechanism for omni-directional deflection of a catheter shaft 有权

    公开(公告)号：US10265505B2

    公开(公告)日：2019-04-23

    申请号：US15377784

    申请日：2016-12-13

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

    Inventor： Troy T. Tegg

    IPC: A61M5/00 ,  A61M25/01 ,  A61M25/00 ,  A61B5/042 ,  A61B5/00 ,  A61B18/14 ,  A61N1/05 ,  A61B18/00

    Abstract: A catheter with a mechanism for omni-directional deflection of a catheter shaft includes a shaft assembly and a controller. The shaft assembly includes a first tubular component that has a preformed curvilinear distal section, a second, substantially straight tubular component with a main axis and an outer shaft. The first and second components are configured for slidable movement therebetween while preserving common rotation so that when the second component is axially moved in a distal direction, the second component deflects the preformed curvilinear section towards the main axis while orientation of the outer shaft is preserved. The controller is configured to effect relative axial movement between the first and second components as well as to effect rotation of the first and second components (and thus also of the preformed curvilinear distal section) without any rotation of the shaft relative to the handle. Varying the deflection of the preformed curvilinear section in combination with variable rotational movement achieves omni-directional distal tip bending.

    Design of Ablation Electrode with Tactile Sensor
    30.
    发明申请
    Design of Ablation Electrode with Tactile Sensor 审中-公开

    公开(公告)号：US20190053848A1

    公开(公告)日：2019-02-21

    申请号：US16117706

    申请日：2018-08-30

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

    Inventor： Hong Cao ,  Riki Thao ,  Saurav Paul

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

    Abstract: A catheter assembly for assessing contact between the catheter assembly and tissue is disclosed. The assembly includes a catheter shaft and a pressure sensitive conductive composite member whose electrical resistance varies with pressure applied to the catheter assembly. The assembly also includes at least one measurement terminal to permit the measurement of changes in the electrical characteristics of the pressure sensitive conductive composite member. The assembly may optionally include a measurement device to measure resistance, impedance and/or other electrical characteristics. The assembly may utilize a reference electrode secured to the patient's tissue, which permits the measurement device to measure changes between the reference electrode and the at least one measurement terminal. Optionally, the assembly may include a conductive outer layer. Also disclosed are sensor assemblies, contact sensor, methods of contact sensing, and methods of manufacturing relating to the use of pressure sensitive conductive composites.

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