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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：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：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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公开(公告)号：US10188459B2
公开(公告)日：2019-01-29
申请号：US15348823
申请日：2016-11-10
Inventor： Carlo Pappone , Alan de la Rama , Peter C. Chen , Cary Hata , Jared A. Shimizu
Abstract: A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.
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公开(公告)号：US20170105796A1
公开(公告)日：2017-04-20
申请号：US15390048
申请日：2016-12-23
Inventor： Carlo Pappone , Alan de la Rama , Peter Chen , Cary Hata
CPC classification number: A61B18/1492 , A61B5/04 , A61B18/18 , A61B2018/00011 , A61B2018/00101 , A61B2018/00214 , A61B2018/00577 , A61B2018/00898 , A61B2218/002 , A61M25/003 , A61M25/0068 , A61M25/0069 , A61M25/007 , A61M25/0071 , A61M25/0082 , A61M25/10 , A61M25/1011 , A61M2025/0034 , A61M2025/0073 , A61M2025/1047
Abstract: An irrigated catheter with uniform cooling and/or uniform fluid distribution in longitudinally spaced apart elution holes by varying the diameter of a fluid delivery lumen. A number of elution holes are provided in a tip region of a catheter body, and these elution holes are in fluid communication with the lumen through ducts. The fluid delivery lumen may be provided with a flow constrictor to restrict flow of fluid towards the distal region.
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Patent Agency Ranking
公开(公告)号：US20140343546A1
公开(公告)日：2014-11-20
申请号：US14268366
申请日：2014-05-02
Inventor： Alan de la Rama , Kirk Kochin Wu , Yongxing Zhang
IPC: A61B18/14
CPC classification number: A61B18/1492 , A61B34/73 , A61B2018/00577 , A61B2218/002 , A61M25/0127
Abstract: A catheter includes a flexible tubing having a proximal end and a distal end. The catheter also includes an electrode assembly attached to the distal end of the flexible tubing and having a first magnet therein. The electrode assembly further includes an electrically conductive tip electrode and an electrically nonconductive coupler which is connected between the tip electrode and the distal end of the flexible tubing. The coupler and the tip electrode are coupled by an interlocking connection. The catheter also includes a second magnet spaced from the electrode assembly along a longitudinal axis of the tubing. The first magnet and the second magnet are responsive to an external magnetic field to selectively position and guide the electrode assembly within a body of a patient.
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公开(公告)号：US11154355B2
公开(公告)日：2021-10-26
申请号：US16369825
申请日：2019-03-29
Inventor： Sacha C. Hall , Dale E. Just , Alan de la Rama , Cary Hata
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.
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公开(公告)号：US20200038103A1
公开(公告)日：2020-02-06
申请号：US16543277
申请日：2019-08-16
Inventor： Carlo Pappone , Alan de la Rama , Peter Chen , Cary Hata
Abstract: A fluid delivery balloon ablation catheter configured to allow uniform fluid distribution through each electrode by varying the diameter of the main lumen. The catheter comprises an elongated tubular catheter body having a distal end, a proximal end, and a lumen extending longitudinally within the catheter body. A number of elution holes are provided in the catheter tip region, and these holes are in fluid communication with the lumen through ducts. As such, cooling fluid is delivered from the pump, through the lumen through the ducts, and out of the holes to the environment outside of the catheter. The main lumen has at least one tapered flow constrictors to restrict flow of fluid towards the distal region of the lumen. The catheter has multiple half-dome balloons, with the distal balloon being the smallest, and the proximal balloon being the largest balloon. The multiple-balloon catheter helps when using the ablation catheter in a funnel-shaped vessel.
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公开(公告)号：US10433903B2
公开(公告)日：2019-10-08
申请号：US14288017
申请日：2014-05-27
Inventor： Carlo Pappone , Alan de la Rama , Peter Chen , Cary Hata
Abstract: A fluid delivery catheter configured to allow optimal fluid distribution through each electrode by varying the diameter of a catheter lumen is disclosed. Uniform or different fluid flow rates through longitudinally spaced apart elution holes may be achieved. Exemplary fluids for use with the catheter include a cooling fluid, a therapeutic fluid, and a medication.
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公开(公告)号：US10039598B2
公开(公告)日：2018-08-07
申请号：US14268366
申请日：2014-05-02
Inventor： Alan de la Rama , Kirk Kochin Wu , Yongxing Zhang
Abstract: A catheter includes a flexible tubing having a proximal end and a distal end. The catheter also includes an electrode assembly attached to the distal end of the flexible tubing and having a first magnet therein. The electrode assembly further includes an electrically conductive tip electrode and an electrically nonconductive coupler which is connected between the tip electrode and the distal end of the flexible tubing. The coupler and the tip electrode are coupled by an interlocking connection. The catheter also includes a second magnet spaced from the electrode assembly along a longitudinal axis of the tubing. The first magnet and the second magnet are responsive to an external magnetic field to selectively position and guide the electrode assembly within a body of a patient.
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