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    ACUTE ASSESSMENT OF CARDIAC ABLATOIN LESIONS
    1.
    发明申请
    ACUTE ASSESSMENT OF CARDIAC ABLATOIN LESIONS 有权

    公开(公告)号：US20240407836A1

    公开(公告)日：2024-12-12

    申请号：US18712122

    申请日：2022-11-21

    Applicant: CARDIOFOCUS, INC.

    Inventor： Steven D. Girouard ,  Krista N. Hagfors ,  Robert E. Neal, II ,  Quim Castellvi

    IPC: A61B18/14 ,  A61B18/00

    Abstract: Devices, systems and methods are provided for treating conditions of the heart, particularly the occurrence of arrhythmias, more particularly atrial fibrillation. Therapeutic pulsed electric field energy is delivered to portions the heart to provide tissue modification, particularly to the entrances to the pulmonary veins in the treatment of atrial fibrillation. Such tissue modification creates a lesion or series of lesions which act as a conduction block within the tissue to prevent the transmission of aberrant electrical signals. Cardiovascular lesion analysis systems and methods provide information related to the effectiveness of the treatment during the procedure so as to create an electrical blockade within the heart that will remain durable and effective long-term.

    Endoscopically Guided Ablation Catheters with Thermally Resistant Balloons
    4.
    发明申请
    Endoscopically Guided Ablation Catheters with Thermally Resistant Balloons 有权

    公开(公告)号：US20220249164A1

    公开(公告)日：2022-08-11

    申请号：US17590950

    申请日：2022-02-02

    Applicant: CardioFocus, Inc.

    Inventor： Gerald Melsky ,  Lincoln Baxter ,  Omar Colon

    IPC: A61B18/24 ,  A61L29/08 ,  A61L29/06

    Abstract: An ablation catheter that includes a shaft having a distal end and a balloon coupled to the shaft. The balloon has an inner surface and an opposite outer surface. The inner surface has a proximal region including a proximal balloon end, a main center region, and a distal region including a distal balloon end. The ablation catheter also includes an energy emitter disposed inside the balloon and being configured to move both axially and rotationally within the inside of the balloon. The ablation catheter includes a thermally resistant coating disposed along the inner surface of the balloon within at least the main center region of the inner surface of the balloon. The thermally resistant coating is formed of a material selected from a group consisting of: silicone rubber, polyisoprene, polyurethane.

    GUIDED CARDIAC ABLATION CATHETERS
    5.
    发明申请
    GUIDED CARDIAC ABLATION CATHETERS 有权

    公开(公告)号：US20170156793A1

    公开(公告)日：2017-06-08

    申请号：US15380637

    申请日：2016-12-15

    Applicant: CardioFocus, Inc.

    Inventor： Gerald Melsky ,  Jeffrey M. Arnold ,  Edward L. Sinofsky ,  Norman E. Farr

    IPC: A61B18/14 ,  A61B1/313 ,  A61B1/05 ,  A61B18/18 ,  A61B1/00

    CPC classification number: A61B18/1492 ,  A61B1/00045 ,  A61B1/00135 ,  A61B1/00165 ,  A61B1/00195 ,  A61B1/05 ,  A61B1/3137 ,  A61B18/1482 ,  A61B18/1815 ,  A61B18/22 ,  A61B18/24 ,  A61B2018/0022 ,  A61B2018/00351 ,  A61B2018/00375 ,  A61B2018/00577 ,  A61B2018/00982 ,  A61B2018/0212 ,  A61B2018/0262 ,  A61B2018/2261 ,  A61B2090/065 ,  A61B2090/3966 ,  A61N7/022 ,  A61N2005/1003

    Abstract: Guided ablation instruments are disclosed for creating lesions in tissue, especially cardiac tissue for treatment of arrhythmias, including atrial fibrillation. In one aspect of the invention, a percutaneous catheter is disclosed with an endoscope positionable in the instrument's distal end region to obtain an image. The image allows the clinician to determine whether contact has been achieved (or blood has been cleared from an ablative energy transmission path) before ablation begins or while ablation is occurring. In one embodiment, percutaneous ablation catheters are disclosed having at least one central lumen and one or more balloon structures at the distal end region of the instrument. Also disposed in the distal end region are an illuminating light source and an endoscope capable of collecting sufficient light to relay an image to the user. The instruments can further include an ablation element. The ablation element can be a contact ablation element, or a radiant energy emitter, which is preferably independently positionable within the lumen of the instrument and adapted to project ablative energy through a transmissive region of the instrument body (and/or balloon) to a target tissue site proximate to the pulmonary veins. The energy can delivered without the need for contact between the energy emitter and the target tissue so long as a clear transmission pathway is established. The endoscope element of the instrument allows the clinician to determine the position of the instrument and, if radiant energy is to be employed, see if such a pathway is clear. Moreover, because the position of the radiant energy emitter can be varied, endoscopic guidance permits the clinician to select a desired location and dose for the lesion.

    Balloon catheter and fluid management system thereof
    8.
    发明授权
    Balloon catheter and fluid management system thereof 有权

    公开(公告)号：US11484692B2

    公开(公告)日：2022-11-01

    申请号：US17024269

    申请日：2020-09-17

    Applicant: CardioFocus, Inc.

    Inventor： Sergei Babko-Malyi ,  Brian Estabrook ,  Gerald Melsky ,  Richard Thompson

    IPC: A61M25/10

    Abstract: A method for maintaining a balloon of a balloon catheter at a prescribed pressure of between about 0.2 psi and 1 psi comprises the step of: generating a vacuum within a reservoir defined in a burette that is part of a fluid management system that is configured to controllably inflating and deflating the balloon by circulating balloon fill media along a fluid circuit, wherein generating the vacuum results in formation of a pressure differential along the fluid circuit, thereby allowing the balloon to be maintained at the prescribed pressure between about 0.2 psi and about 1 psi.

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