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公开(公告)号：US20200345415A1
公开(公告)日：2020-11-05
申请号：US16864704
申请日：2020-05-01
发明人： Reecha SHARMA , Robert B. STAGG , Zhong WANG , Betzi ZAFRA , Lee Ming BOO , Assaf GOVARI , Thomas V. SELKEE , Christopher Thomas BEECKLER , Andres Claudio ALTMANN , Joseph Thomas KEYES , Athanassios PAPAIOANNOU , Kristine B. FUIMAONO
IPC分类号： A61B18/14
摘要： A method that includes selectively positioning an ablation catheter system at a treatment site; and ablating tissue at the treatment site with the ablation catheter system using a power setting of approximately 90W applied to tissue for approximately four (4) second increments with a break period of approximately 4 seconds between applications.
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公开(公告)号：US20240350192A1
公开(公告)日：2024-10-24
申请号：US18597410
申请日：2024-03-06
CPC分类号： A61B18/1492 , A61B90/06 , A61B2018/00357 , A61B2018/00577 , A61B2018/00613 , A61B2018/00642 , A61B2018/00708 , A61B2018/00714 , A61B2018/00791 , A61B2018/1253 , A61B2018/126 , A61B2018/1266 , A61B2090/065 , A61B2218/002
摘要： The disclosed technology includes a method of treating atrial fibrillation in a predetermined group of patients meeting predetermined inclusion and exclusion criteria, including delivering a catheter into a pulmonary vein of each patient of the predetermined group of patients, ablating one or more locations of targeted tissues of the pulmonary vein using the catheter, determining an ablation index as a function of the measured contact force and number of pulsed electric field applications for each location of the one or more locations from the pulsed electric field ablation, and achieving a predetermined effectiveness rate of pulmonary vein isolation in the group of patients within an effectiveness evaluation period. The catheter can include a tip electrode configured to emit either a pulsed electric field or a radiofrequency signal to cardiac tissue and measure a contact force experienced by the tip electrode against cardiac tissue during pulsed electric field ablation.
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公开(公告)号：US20230355305A1
公开(公告)日：2023-11-09
申请号：US18352877
申请日：2023-07-14
CPC分类号： A61B18/1492 , A61B5/061 , A61B2018/00577
摘要： An electrical apparatus includes a spiral electrode and an interface circuit. The spiral electrode is disposed on a distal end of a probe for insertion into a body of a patient. The interface circuit is configured to (a) transfer a radiofrequency (RF) ablation signal to the electrode for ablating tissue in the body, (b) output a voltage that develops across the electrode in response to an external magnetic field, for measuring a position of the distal end in the body, and (c) transfer electrical current through the electrode for measuring a resistivity that is indicative of tissue temperature in a vicinity of the electrode.
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公开(公告)号：US20240260849A1
公开(公告)日：2024-08-08
申请号：US18637725
申请日：2024-04-17
CPC分类号： A61B5/066 , A61B5/287 , A61B5/343 , A61B5/349 , A61B5/367 , A61B5/6853 , A61B5/6858
摘要： A medical system is configured to receive electrical signals responsive to electrical activity in myocardial tissue at respective locations on from each electrode of a first portion of a plurality of electrodes at a distal end of a catheter, determine a geometric center of the first portion of the plurality of electrodes, determine a focus of an arrhythmia, and output an indication of a spatial relationship between the geometric center and the focus. The first portion of the plurality of electrodes includes at least three electrodes, and the plurality of electrodes includes a second portion of electrodes distinct from the first portion and not in contact with myocardial tissue. The focus is determined based at least in part on the electrical signals from the electrodes of the first portion of the plurality of electrodes. An associated method is also described.
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公开(公告)号：US20240225726A1
公开(公告)日：2024-07-11
申请号：US18616638
申请日：2024-03-26
发明人： Assaf GOVARI , Christopher Thomas BEECKLER , Andres Claudio ALTMANN , Joseph Thomas KEYES , Kevin Justin HERRERA
CPC分类号： A61B18/1492 , A61B34/20 , A61B2017/00526 , A61B2017/00867 , A61B2018/00077 , A61B2018/00083 , A61B2018/00267 , A61B2018/00351 , A61B2018/00577 , A61B2018/00613 , A61B2018/1467 , A61B2034/2051
摘要： A catheter configured to be used in a medical procedure includes a shaft and electrically conductive splines. The splines can include an insulated portion and a non-insulated portion configured to electrically ablate tissue. The catheter can include one or more electrodes coupled to insulated portion(s) of the splines and configured to sense electrical signals in the tissue. The splines can be coupled to an apex, forming an expandable distal-end assembly. The catheter can include a bump stop coupled to the apex and configured to maintain a minimal distance between the apex and the distal tip of the shaft. An ablation system can include the catheter, a generator, and a processor configured to control ablation energy from the generator to the splines such that ablation energy is applied to a first spline without applying ablation energy to a second spline.
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公开(公告)号：US20220151693A1
公开(公告)日：2022-05-19
申请号：US17526299
申请日：2021-11-15
发明人： Reecha SHARMA , Robert B. STAGG , Zhong WANG , Betzi ZAFRA , Lee Ming BOO , Assaf GOVARI , Thomas V. SELKEE , Christopher Thomas BEECKLER , Andres Claudio ALTMANN , Joseph Thomas KEYES , Athanassios PAPAIOANNOU , Kristine B. FUIMAONO
IPC分类号： A61B18/14
摘要： A method that includes selectively positioning an ablation catheter system at a treatment site; and ablating tissue at the treatment site with the ablation catheter system using a power setting of approximately 90W applied to tissue for approximately four (4) second increments with a break period of approximately 4 seconds between applications.
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公开(公告)号：US20240324939A1
公开(公告)日：2024-10-03
申请号：US18743766
申请日：2024-06-14
CPC分类号： A61B5/367 , A61B5/256 , A61B5/283 , A61B5/339 , A61B5/7221 , A61B5/7225
摘要： A system includes an interface and a processor. The interface is configured to receive an electrogram acquired in a heart of a patient. The processor is configured to (i) estimate a level of injury current present in the electrogram, and (ii) based on the estimated level of injury current, decide whether to use the electrogram in a subsequent analysis.
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公开(公告)号：US20240173071A1
公开(公告)日：2024-05-30
申请号：US18434355
申请日：2024-02-06
CPC分类号： A61B18/1492 , A61B2017/00526 , A61B2017/00867 , A61B2018/00023 , A61B2018/00029 , A61B2018/0016 , A61B2018/00214 , A61B2018/00267 , A61B2018/00351 , A61B2018/00577 , A61B2018/00613 , A61B2018/1467 , A61B2218/002 , A61B2562/046 , A61B2562/164
摘要： A medical probe includes a shaft and an expandable flexible distal-end assembly. The shaft is configured for insertion into a cavity of organ of a patient. The expandable flexible distal-end assembly, which is fitted at a distal-end of the shaft, includes a flat flexible backing sheet, including irrigation channels, and two flexible substrates having respective arrays of electrodes disposed thereon, the substrates attached one on either side of the backing sheet.
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公开(公告)号：US20160183838A1
公开(公告)日：2016-06-30
申请号：US15061247
申请日：2016-03-04
CPC分类号： A61B5/055 , A61B5/0044 , A61B5/6852 , G01R33/3415 , G01R33/3621
摘要： A medical probe, including a flexible insertion tube having a distal end for insertion into a body cavity. An array of spatially separated coils is positioned within the distal end. A processor is configured to process respective signals generated by the coils in response to magnetic resonance of tissue in the body cavity, and to process the signals while applying a phase delay responsive to a separation between the coils so as to image the tissue.
摘要翻译： 一种医疗探针，包括具有用于插入体腔的远端的柔性插入管。 空间分离线圈的阵列位于远端内。 处理器被配置为响应于体腔中的组织的磁共振来处理由线圈产生的相应信号，并且响应于线圈之间的间隔而施加相位延迟来处理信号，以便对组织进行成像。
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公开(公告)号：US20240341840A1
公开(公告)日：2024-10-17
申请号：US18317698
申请日：2023-05-15
CPC分类号： A61B18/1492 , A61B34/10 , A61B2017/00172 , A61B2018/00351 , A61B2018/00577 , A61B2018/00666 , A61B2018/00708 , A61B2018/00732 , A61B2018/00761 , A61B2018/00767 , A61B2018/00904 , A61B2018/1266 , A61B2018/1273 , A61B2090/065
摘要： The disclosed technology includes a system for applying pulsed field ablation to treat atrial fibrillation. The system includes a catheter and a processor. The catheter can include a tip electrode controlled to emit either a pulsed electric field or a radiofrequency signal to biological tissue and ablate one or more locations of biological tissue of the pulmonary vein. The processor is configured to measure a contact force experienced by the tip electrode against biological tissue during pulsed electric field ablation and determine a pulsed field ablation index as a function of the measured contact force and number of pulsed electric field applications for each location of the one or more locations so that it can be determined whether a lesion is sufficiently durable.
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