Patents by Inventor Alan de la Rama

Alan de la Rama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11559658
    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.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 24, 2023
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Publication number: 20220370792
    Abstract: Flexible high-density mapping catheter tips and flexible ablation catheter tips with onboard high-density mapping electrodes are disclosed. These tips can be used for diagnosing and treating cardiac arrhythmias. The flexible, distal tips are adapted to conform to tissue and comprise a plurality of microelectrodes mounted to permit relative movement among at least some of the microelectrodes. The flexible tip portions may comprise a flexible framework forming a flexible array of microelectrodes (for example, a planar or cylindrical array) adapted to conform to tissue and constructed at least in part from nonconductive material in some embodiments. The flexible array of microelectrodes may be formed from a plurality of rows of longitudinally-aligned microelectrodes. The flexible array may further comprise, for example, a plurality of electrode-carrying arms or electrode-carrier bands. Multiple flexible frameworks may be present on a single device.
    Type: Application
    Filed: June 8, 2022
    Publication date: November 24, 2022
    Applicant: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Alan de la Rama, Cary Hata, Don Curtis Deno, Carlo Pappone
  • Publication number: 20220354568
    Abstract: A catheter is disclosed comprising a catheter shaft including a proximal end and a distal end. A flexible framework can be connected to the distal end of the catheter shaft, wherein the flexible framework includes a plurality of heating electrodes and a temperature sensor. The plurality of heating electrodes can be configured to be heated to a first temperature, the first temperature being lower than which radio frequency ablation is performed. The plurality of heating electrodes can be configured to be heated to a second temperature, the second temperature being a temperature at which radio frequency ablation is performed.
    Type: Application
    Filed: May 6, 2022
    Publication date: November 10, 2022
    Inventors: Carlo Pappone, Alan de la Rama, Gabriele Giuseppe Vicedomini, Cary Hata, Tho Hoang Nguyen, Peter Chen
  • Publication number: 20220354570
    Abstract: A catheter apparatus comprises an elongated catheter body having a distal end, a proximal end, and at least one fluid lumen extending longitudinally therein; and a plurality of flexible electrode segments on a distal portion of the catheter body adjacent the distal end, each pair of neighboring flexible electrode segments being spaced from each other longitudinally by a corresponding electrically nonconductive segment. Each flexible electrode segment comprises a sidewall provided with one or more elongated stiffness reductions extending through the sidewall, the one or more elongated stiffness reductions providing flexibility in the sidewall for bending movement relative to a longitudinal axis of the catheter body. The electrically nonconductive segment is substantially smaller in length than each of the corresponding pair of neighboring flexible electrode segments.
    Type: Application
    Filed: July 12, 2022
    Publication date: November 10, 2022
    Inventors: Alan de la Rama, Cary HATA
  • Publication number: 20220323147
    Abstract: In one embodiment, an irrigated catheter ablation apparatus comprises an elongated body having a distal end, a proximal end, and at least one fluid lumen extending longitudinally therein; and a plurality of segmented ablation electrodes on a distal portion of the elongated body. The electrodes are spaced from the proximal end and from the distal end of the elongated body by electrically nonconductive segments. The electrodes are spaced from each other longitudinally by electrically nonconductive segments. For each electrode that is longitudinally disposed next to one of the nonconductive segments, an edge is formed between an electrode end of the electrode and a nonconductive segment end of the nonconductive segment. A plurality of elution holes are disposed adjacent to the edges. A plurality of ducts establish fluid communication between the elution holes and the fluid lumen.
    Type: Application
    Filed: June 22, 2022
    Publication date: October 13, 2022
    Inventors: Cary HATA, Thu Xuan TRAN, Alan de la RAMA, Tho Hoang NGUYEN, Irvin John NARCISO, Peter C. CHEN, Hanh Ngoc DO
  • Patent number: 11457974
    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.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: October 4, 2022
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata
  • Patent number: 11419675
    Abstract: A catheter apparatus comprises an elongated catheter body having a distal end, a proximal end, and at least one fluid lumen extending longitudinally therein; and a plurality of flexible electrode segments on a distal portion of the catheter body adjacent the distal end, each pair of neighboring flexible electrode segments being spaced from each other longitudinally by a corresponding electrically nonconductive segment. Each flexible electrode segment comprises a sidewall provided with one or more elongated stiffness reductions extending through the sidewall, the one or more elongated stiffness reductions providing flexibility in the sidewall for bending movement relative to a longitudinal axis of the catheter body. The electrically nonconductive segment is substantially smaller in length than each of the corresponding pair of neighboring flexible electrode segments.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: August 23, 2022
    Assignee: ST. JUDE MEDICAL, LLC
    Inventors: Alan De La Rama, Cary Hata
  • Publication number: 20220233234
    Abstract: The invention relates to an ablation catheter for treatment of a patient's tissue, for example for a PVI procedure on a patient's heart, comprising an elongated catheter shaft and an ablation portion being arranged at a distal end of the catheter shaft with a plurality of electrodes accommodated along the ablation portion, wherein the ablation portion comprises at least two loop sections forming a three-dimensional spiral. In order to increase safety of ablation treatment, spare adjacent tissue (e.g. nerves, vessels, esophagus) and shorten ablation time, a pitch, or clearance of two neighboring loop sections is greater than an ionization threshold of the medium around the distal section, for example blood or gases resulted from electrolysis. The invention further relates to an operation method of such ablation catheter.
    Type: Application
    Filed: December 28, 2021
    Publication date: July 28, 2022
    Applicant: CRC EP, Inc.
    Inventors: Dorin Panescu, Cary Hata, Alan de la Rama, Henning Ebert, Steffen Holzinger
  • Publication number: 20220233236
    Abstract: The invention relates to an ablation catheter for treatment of a patient's tissue by delivery of high-voltage pulses comprising a catheter shaft and an ablation portion being arranged at a distal end of the catheter shaft with a plurality of electrodes accommodated along the ablation portion, wherein the ablation portion forms a spiral and comprises a first loop section and a neighboring second loop section, wherein an inner diameter of the first loop section increases towards an inner diameter of the second loop section starting from a first end of the first loop section located opposite the second loop section, wherein the first loop section has a greater stiffness than the second loop section.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 28, 2022
    Applicant: CRC EP, Inc.
    Inventors: Cary Hata, Alan de la Rama, Dorin Panescu
  • Patent number: 11395694
    Abstract: In one embodiment, an irrigated catheter ablation apparatus comprises an elongated body having a distal end, a proximal end, and at least one fluid lumen extending longitudinally therein; and a plurality of segmented ablation electrodes on a distal portion of the elongated body. The electrodes are spaced from the proximal end and from the distal end of the elongated body by electrically nonconductive segments. The electrodes are spaced from each other longitudinally by electrically nonconductive segments. For each electrode that is longitudinally disposed next to one of the nonconductive segments, an edge is formed between an electrode end of the electrode and a nonconductive segment end of the nonconductive segment. A plurality of elution holes are disposed adjacent to the edges. A plurality of ducts establish fluid communication between the elution holes and the fluid lumen.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: July 26, 2022
    Assignee: ST. JUDE MEDICAL, LLC
    Inventors: Cary Hata, Thu Xuan Tran, Alan de la Rama, Tho Hoang Nguyen, Irvin John Narciso, Peter C. Chen, Hanh Ngoc Do
  • Publication number: 20220218412
    Abstract: A mapping and ablation catheter is presented. The mapping and ablation catheter comprising an elongated catheter shaft and an ablation portion being arranged at a distal end of the catheter shaft, wherein: the ablation portion comprises a plurality of loop segments; at least one first loop segment of the plurality of loop segments exhibits one or more ablation electrodes, the one or more ablation electrodes being configured for delivering energy to vascular tissue; the loop segments together form a three-dimensional spiral; and respective diameters of the loop segments are such that each loop segment rests on a neighboring loop segment when the three-dimensional spiral is compressed. The plurality of loop segments comprises a stabilizer loop segment, which does not does not exhibit any electrodes, wherein the stabilizer loop segment is the most proximal loop segment of the plurality of loop segments.
    Type: Application
    Filed: April 23, 2020
    Publication date: July 14, 2022
    Applicant: CRC EP, Inc.
    Inventors: Alan de la Rama, Cary Hata
  • Patent number: 11383078
    Abstract: Flexible high-density mapping catheter tips and flexible ablation catheter tips with onboard high-density mapping electrodes are disclosed. These tips can be used for diagnosing and treating cardiac arrhythmias. The flexible, distal tips are adapted to conform to tissue and comprise a plurality of microelectrodes mounted to permit relative movement among at least some of the microelectrodes. The flexible tip portions may comprise a flexible framework forming a flexible array of microelectrodes (for example, a planar or cylindrical array) adapted to conform to tissue and constructed at least in part from nonconductive material in some embodiments. The flexible array of microelectrodes may be formed from a plurality of rows of longitudinally-aligned microelectrodes. The flexible array may further comprise, for example, a plurality of electrode-carrying arms or electrode-carrier bands. Multiple flexible frameworks may be present on a single device.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: July 12, 2022
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Alan de la Rama, Cary K. Hata, Don Curtis Deno, Carlo Pappone
  • Patent number: 11350987
    Abstract: A catheter is disclosed comprising a catheter shaft including a proximal end and a distal end. A flexible framework can be connected to the distal end of the catheter shaft, wherein the flexible framework includes a plurality of heating electrodes and a temperature sensor. The plurality of heating electrodes can be configured to be heated to a first temperature, the first temperature being lower than which radio frequency ablation is performed. The plurality of heating electrodes can be configured to be heated to a second temperature, the second temperature being a temperature at which radio frequency ablation is performed.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: June 7, 2022
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Carlo Pappone, Alan de la Rama, Gabriele Giuseppe Vicedomini, Cary Hata, Tho Hoang Nguyen, Peter Chen
  • Patent number: 11337750
    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.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: May 24, 2022
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Carlo Pappone, Alan de la Rama, Peter C. Chen, Cary Hata, Jared A. Shimizu
  • Publication number: 20220079668
    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.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 17, 2022
    Inventors: Sacha C. Hall, Dale E. Just, Alan de la Rama, Cary Hata
  • Patent number: D951438
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: May 10, 2022
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata, Carlo Pappone
  • Patent number: D952140
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: May 17, 2022
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata, Carlo Pappone
  • Patent number: D952843
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: May 24, 2022
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata, Don Curtis Deno, Carlo Pappone
  • Patent number: D966506
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: October 11, 2022
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata, Don Curtis Deno, Carlo Pappone
  • Patent number: D966507
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: October 11, 2022
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata, Carlo Pappone