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公开(公告)号：US10130419B2
公开(公告)日：2018-11-20
申请号：US14872208
申请日：2015-10-01
Inventor： D. Curtis Deno , Stephan P. Miller
IPC: A61B18/12 , A61B18/14 , A61B5/00 , A61B5/06 , A61B90/00 , A61B5/01 , A61B18/02 , A61B18/00 , A61N7/02 , A61B5/053 , A61B17/00
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.
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公开(公告)号：US20180325455A1
公开(公告)日：2018-11-15
申请号：US15974339
申请日：2018-05-08
Inventor： Braden J. Eliason , D. Curtis Deno , Eric J. Voth , Dale E. Just
CPC classification number: A61B5/6858 , A61B5/04 , A61B5/0422 , A61B18/1492 , A61B2018/00267 , A61B2018/00279 , A61B2018/00577 , A61B2018/1435
Abstract: An electrophysiology catheter is provided. In one embodiment, the catheter includes an elongate, deformable shaft having a proximal end and a distal end and a basket electrode assembly coupled to the distal end of the shaft. The basket electrode assembly has a proximal end and a distal end and is configured to assume a compressed state and an expanded state. The electrode assembly further includes one or more tubular splines having a plurality of electrodes disposed thereon and a plurality of conductors. Each of the plurality of conductors extends through the tubular spline from a corresponding one of the plurality of electrodes to the proximal end of the basket electrode assembly. The tubular splines are configured to assume a non-planar (e.g., a twisted or helical) shape in the expanded state.
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公开(公告)号：US10076639B2
公开(公告)日：2018-09-18
申请号：US14818633
申请日：2015-08-05
Inventor： Xiaoping Guo , Richard E. Stehr
CPC classification number: A61M25/0668 , A61M25/0009 , A61M25/0023 , A61M25/005 , A61M25/0108
Abstract: A body (2) for a catheter or sheath is disclosed. The body (2) includes strips (8, 10) formed longitudinally from the proximal (6) portion of the body (2) to the distal (4) portion of the body (2). The strips are formed of different materials. The strips can have different radiopacities, or can be splittable/peelable. The splittable/peelable body comprises a peel mechanism longitudinally extending along its respective length. The peel mechanism can be formed by longitudinally extending regions of interfacial bonding between first and second longitudinally extending strips of polymer material. A region of stress concentration extends along the region of interfacial bonding. The stress concentration facilitates the splitting of the body (2) along its peel mechanism. The polymer material of the first strip (8) can have a greater amount of radiopaque filler than the polymer material of the second strip (10). Each strip forms at least a portion of an outer circumferential surface of the body (2).
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公开(公告)号：US10070919B2
公开(公告)日：2018-09-11
申请号：US14719616
申请日：2015-05-22
Inventor： Steven C. Christian
CPC classification number: A61B18/1492 , A61B18/12 , A61B2018/00029 , A61B2018/00077 , A61B2018/00083 , A61B2018/00101 , A61B2018/00107 , A61B2018/00577 , A61B2218/002
Abstract: An ablation electrode assembly is provided with improved irrigation cooling of the assembly and ablation site. The assembly includes a proximal end configured to be coupled to a catheter shaft and a distal end configured to deliver ablation energy to tissue. The assembly further includes a fluid manifold extending from the proximal end to the distal end and configured to fluidly communicate with a fluid lumen in the catheter shaft. The fluid manifold defines an axial passageway centered about a longitudinal axis extending in the longitudinal direction of the assembly. The axial passageway has a distal end terminating prior to the distal end of the electrode assembly. The assembly further includes means for creating turbulence in fluid exiting the first axial passageway.
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公开(公告)号：US20180206913A1
公开(公告)日：2018-07-26
申请号：US15874493
申请日：2018-01-18
Inventor： Theodore A. Johnson
CPC classification number: A61B18/1492 , A61B5/042 , A61B2017/00084 , A61B2017/00243 , A61B2017/22038 , A61B2018/00351 , A61B2018/00577 , A61B2018/00815 , A61B2018/00821 , A61B2018/1407 , A61B2090/065 , A61B2218/002
Abstract: Embodiments of a guide and flexible sleeve for use with catheters for ablation or other medical procedures are disclosed. An exemplary catheter comprises a guide element having a proximal end and a distal end, the distal end configurable in a desired shape. A flexible sleeve is conformable to the guide element so that the flexible sleeve slides over the guide element, the flexible sleeve has a proximal end and a distal end. A controller couples to the flexible sleeve. The controller operates to move the flexible sleeve at least part way between the distal end of the guide element and the proximal end of the guide element. At least one ablation element disposed at the distal end of the flexible sleeve operates to form a substantially continuous ablative lesion when the flexible sleeve is in contact with a contiguous volume of target tissue.
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Patent Agency Ranking
326.发明申请公开(公告)号：US20180206911A1
公开(公告)日：2018-07-26
申请号：US15860503
申请日：2018-01-02
Inventor： Steven C. Christian , Theodore A. Johnson
IPC: A61B18/14
CPC classification number: A61B18/1492 , A61B18/06 , A61B18/082 , A61B18/24 , A61B2018/00029 , A61B2018/00357 , A61B2018/00648 , A61B2018/00702 , A61B2018/00744 , A61B2018/00761 , A61B2018/00791 , A61B2018/00863 , A61B2018/0212 , A61B2018/1861 , 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.
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公开(公告)号：US20180154129A1
公开(公告)日：2018-06-07
申请号：US15821740
申请日：2017-11-22
Inventor： Saurav Paul , Troy T. Tegg , Reed R. Heimbecher , Richard E. Stehr , Riki Chou Thao
CPC classification number: A61M39/10 , A61B5/0084 , A61B5/042 , A61B5/061 , A61B5/065 , A61B5/1076 , A61B5/6852 , A61B5/6885 , A61B18/1492 , A61B18/24 , A61B2017/00057 , A61B2017/00084 , A61B2090/065 , A61M25/0043 , A61M25/0068 , A61M25/0069 , A61M25/007 , A61M25/0071 , A61M25/0074 , A61M25/01 , A61M25/0138 , A61M25/0141 , A61M2025/0002 , A61M2025/0166
Abstract: A contact sensing assembly including a catheter and an electrode including a tip portion and a base portion, and a generally central axis, with the electrode being connected to a distal end of the catheter. Optical sensor(s) may be provided for emitting and/or receiving an optical signal, with a part of the optical signal being transverse to the central axis. Optical interference member(s) may be provided for interfering with the optical signal. A method for sensing contact force exerted by an electrode on a tissue includes directing an optical signal along a portion of a catheter, emitting and/or receiving an optical signal, with a part of the optical signal being at a predetermined angle relative to the central axis, and sensing changes in intensity of the optical signal based on displacement associated with the electrode tip portion based on the contact force exerted by the electrode on the tissue.
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328.发明申请公开(公告)号：US20180153428A1
公开(公告)日：2018-06-07
申请号：US15725128
申请日：2017-10-04
Inventor： Ram K. Balachandran , D. Curtis Deno
CPC classification number: A61B5/0422 , A61B5/0452 , A61B5/061 , A61B5/062 , A61B5/7203 , A61B5/7239 , A61B18/1492 , A61B34/20 , A61B2017/00039 , A61B2017/00044 , A61B2017/00053 , A61B2018/00577 , A61B2018/00839 , A61B2034/2051 , A61B2034/2053 , A61B2218/002
Abstract: A system and method are provided for determining electrophysiological data. The system comprises an electronic control unit that is configured to receive electrical signals from a set of electrodes, receive position and orientation data for the set of electrodes from a mapping system, compensate for position and orientation artifacts of the set of electrodes, compose cliques of a subset of neighboring electrodes in the set of electrodes, determine catheter orientation independent information of a target tissue, and output the orientation independent information to a display. The method comprising receiving electrogram data for a set of electrodes (80), compensating for artifacts in sensor positions in the mapping system (81), resolving the bipolar signals into a 3D vector electrogram in the mapping system coordinates (82), manipulating observed unipolar voltage signals and the tangent component of the e-field to estimate the conduction velocity vector (83), and outputting the catheter orientation independent information (84).
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公开(公告)号：US20180116736A1
公开(公告)日：2018-05-03
申请号：US15801985
申请日：2017-11-02
Inventor： Eric S Olson , Mark B. Kirschenman
CPC classification number: A61B34/30 , A61B2017/00477 , A61B2034/301 , A61M25/0043 , A61M39/10 , A61M2025/0175
Abstract: A medical device positioner for use with a remote catheter guidance system (RCGS) is provided, which can address angular, lateral and/or translational misalignment of an elongate medical device between the RCGS and an access point on a patient's body. Such a medical device positioner can include first and second tube sections connected by a joint septum, with at least a portion of the second tube section being adapted to be inserted into a vascular system of a patient at an access point.
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公开(公告)号：US20180078173A1
公开(公告)日：2018-03-22
申请号：US15724704
申请日：2017-10-04
CPC classification number: A61B5/068 , A61B5/06 , A61B5/062 , A61B5/6869 , A61B8/12 , A61B34/20 , A61B2017/003 , A61B2017/00336 , A61B2034/2051 , A61B2034/2053 , A61B2562/043 , A61B2562/046 , A61M25/00 , A61M25/0105 , A61M25/0133
Abstract: A medical device can be localized by providing at least three non-colinear localization elements (e.g., electrodes) thereon. Once placed in a non-ionizing localization field, three adjacent localization elements, at least one of which will typically be a spot electrode, may be selected, and the non-ionizing localization field may be used to measure their locations. A cylinder is defined to fit the measured locations of the selected localization elements. The cylinder is rotationally oriented using the measured location of a spot electrode. Location and rotational attitude information may be used to construct a three-dimensional representation of the medical device within the localization field. The electrodes may be provided on the medical device or on a sheath into which the medical device is inserted. The invention also provides systems and methods for identifying and calibrating deflection planes where the medical device and/or sheath are deflectable.
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