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公开(公告)号：US10799176B2
公开(公告)日：2020-10-13
申请号：US14151273
申请日：2014-01-09
Inventor： Riki Thao , Saurav Paul
Abstract: Systems and methods are disclosed for assessing tissue contact, e.g., for mapping, tissue ablation, or other procedures. An exemplary tissue contact sensing system comprises a flexible tip device. At least one piezoelectric sensor is housed within the flexible tip device. The at least one piezoelectric sensor is responsive to contact stress of the flexible tip device by generating electrical signals corresponding to the amount of contact stress. An output device is electrically connected to the at least one piezoelectric sensor. The output device receives the electrical signals for assessing tissue contact by the flexible tip device. Methods for assembling and using the flexible tip device are also disclosed.
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公开(公告)号：US20200305971A1
公开(公告)日：2020-10-01
申请号：US16848599
申请日：2020-04-14
Inventor： Huisun Wang , Christopher J. Geurkink
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.
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203.发明授权公开(公告)号：US10758238B2
公开(公告)日：2020-09-01
申请号：US15634904
申请日：2017-06-27
Inventor： James V. Kauphusman , Andre d'Avila , Vivek Reddy
Abstract: A method is provided for ablating a portion of the myocardium. The method includes inserting an occlusion catheter into a vessel on a heart, occluding the vessel using the occlusion catheter, inserting an ablation catheter into a chamber of the heart, positioning the ablation catheter against the myocardium, and ablating a portion of the myocardium while the vessel is occluded. The system includes an occlusion catheter having a catheter body including a tubular member having a distal portion and a bend located in the distal portion, a balloon located proximal of the bend and configured to contact an inner surface of the CS when positioned therewithin, a plurality of marker bands positioned on the catheter body, and a plurality of electrodes positioned on the catheter body. One or more electrodes or coils can be used as a reference for an electroanatomical system and can be disposed on the occlusion catheter.
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公开(公告)号：US20200206456A1
公开(公告)日：2020-07-02
申请号：US16742428
申请日：2020-01-14
Inventor： Alan de la Rama , Cary Hata , William Du , Yongxing Zhang
Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
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公开(公告)号：US20200205881A1
公开(公告)日：2020-07-02
申请号：US16814655
申请日：2020-03-10
Inventor： Saurav Paul , Riki Thao , Hong Cao , Kedar Ravindra Belhe
Abstract: An electrode head is disclosed that utilizes electrically conductive or dissipative fabric to exchange electrical energy with tissue. This electrode head may be used for any appropriate application, such as a catheter electrode, a return electrode, or the like. Any appropriate function may be provided by this electrode head, such as tissue ablation, tissue mapping, or providing an electrical ground.
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Patent Agency Ranking
206.发明申请公开(公告)号：US20200085528A1
公开(公告)日：2020-03-19
申请号：US16579030
申请日：2019-09-23
Inventor： Eric Steven Olson , Eric Jon Voth , Jeffrey Alan Schweitzer
Abstract: A method for registering a catheter navigation system to a three-dimensional image generally includes obtaining a three-dimensional image including position information for a plurality of surface points on a part of a patient's body, using a catheter navigation system to place a tool at a location on the surface of the patient's body, measuring position information for the surface location, identifying a corresponding location on the image, associating position information for the surface location and the location identified on the image as a fiducial pair, and using at least one fiducial pair to generate a mapping function. The mapping function transforms points within the coordinate system of the catheter navigation to the coordinate system of the three-dimensional image such that, for each fiducial pair, the mapping error is about zero. Suitable warping algorithms include thin plate splines, mean value coordinates, and radial basis function networks.
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公开(公告)号：US10576244B2
公开(公告)日：2020-03-03
申请号：US15639981
申请日：2017-06-30
Inventor： Alan de la Rama , Cary Hata , William Du , Yongxing Zhang
Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
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公开(公告)号：US10524731B2
公开(公告)日：2020-01-07
申请号：US15283430
申请日：2016-10-02
Inventor： Jeffrey A. Schweitzer , Steven C. Christian , Anthony D. Hill
IPC: A61B5/1459 , A61B5/00 , A61B5/0408 , A61B5/042 , A61B18/14 , A61B90/00 , A61B18/00
Abstract: A sensing assembly for sensing contact with an object is disclosed. The contact sensing assembly may comprise an elongate tubular body. An electrode may be connected to the elongate tubular body. A vibration element is operatively connected with the electrode and configured to deliver a vibration-inducing signal to induce vibration of the electrode. A sensor is configured to monitor the electrode for a perturbation in the induced vibration. The perturbation results from contact between the electrode and the object.
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公开(公告)号：US10426557B2
公开(公告)日：2019-10-01
申请号：US15089791
申请日：2016-04-04
Inventor： Atila Amiri , Kulbir S. Sandhu , Betty Mark , Mark B. Kirschenman
IPC: A61B34/30 , A61B34/00 , A61B34/37 , A61B90/00 , A61M25/01 , A61B17/00 , A61B34/20 , A61B18/14 , A61B18/00
Abstract: An obstruction detection system for a robotic catheter system including a robotic catheter manipulator assembly including one or more catheter manipulation bases and one or more sheath manipulation bases. Each manipulation base may be generally linearly movable on one or more tracks relative to the robotic catheter manipulator assembly. The obstruction detection system may include one or more obstruction detection sensors disposed on the track or on the manipulation bases to detect an obstruction along a path of motion of one or more manipulation bases. A software system may be provided for monitoring movement of the catheter and sheath manipulation bases, and/or a status of the obstruction detection sensors.
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公开(公告)号：US20190275291A2
公开(公告)日：2019-09-12
申请号：US16148873
申请日：2018-10-01
Inventor： Alan de la Rama , Cary Hata
Abstract: A catheter apparatus includes an elongated body having a distal portion including a distal end, a plurality of flexible segments, and at least one intermediate segment that is less flexible than the flexible segments. Adjacent flexible segments are spaced from each other longitudinally by the at least one intermediate segment. Each of the flexible segments include a sidewall having at least one elongated gap extending at least partially therethrough and forming interlocking members. The at least one intermediate segment is shorter than the flexible segments.
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