WO2023205817A3 - Electrode arrangement in a cardiac ablation catheter and methods for use - Google Patents

Electrode arrangement in a cardiac ablation catheter and methods for use Download PDF

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Publication number
WO2023205817A3
WO2023205817A3 PCT/US2023/067101 US2023067101W WO2023205817A3 WO 2023205817 A3 WO2023205817 A3 WO 2023205817A3 US 2023067101 W US2023067101 W US 2023067101W WO 2023205817 A3 WO2023205817 A3 WO 2023205817A3
Authority
WO
WIPO (PCT)
Prior art keywords
methods
tissue
ablation catheter
cardiac ablation
electrode arrangement
Prior art date
Application number
PCT/US2023/067101
Other languages
French (fr)
Other versions
WO2023205817A2 (en
Inventor
Yonathan F. Melman
Paul Melman
Meir M. Brosh
Original Assignee
Focused Therapeutics, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/722,533 external-priority patent/US20220354567A1/en
Application filed by Focused Therapeutics, Inc. filed Critical Focused Therapeutics, Inc.
Publication of WO2023205817A2 publication Critical patent/WO2023205817A2/en
Publication of WO2023205817A3 publication Critical patent/WO2023205817A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A61B2018/00029—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids open
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—Ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
    • A61B2218/002—Irrigation

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Medical Informatics (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Cardiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

A novel cardiac ablation catheter is based on the principle that the field gradient near the electrode surface is reduced by a truncated dome shape which reduces the ratio of the current magnitude near the electrode-tissue interface to that in the tissue. Thus, for a given power, a deeper lesion can be created at a lower applied power reducing the risk of steam pop and overheating of the surrounding blood pool. The result is a reduction in spurious current which does not contribute to tissue ablation but undesirably increases heating of the blood pool near the ablation site. Methods of use are also described.
PCT/US2023/067101 2022-04-18 2023-05-17 Electrode arrangement in a cardiac ablation catheter and methods for use WO2023205817A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17/722,533 2022-04-18
US17/722,533 US20220354567A1 (en) 2021-05-03 2022-04-18 Electrode arrangement in a cardiac ablation catheter and methods for use

Publications (2)

Publication Number Publication Date
WO2023205817A2 WO2023205817A2 (en) 2023-10-26
WO2023205817A3 true WO2023205817A3 (en) 2024-01-04

Family

ID=88420733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2023/067101 WO2023205817A2 (en) 2022-04-18 2023-05-17 Electrode arrangement in a cardiac ablation catheter and methods for use

Country Status (1)

Country Link
WO (1) WO2023205817A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190076190A1 (en) * 2016-05-02 2019-03-14 Affera, Inc. Catheter sensing and irrigating
US20190247115A1 (en) * 2010-04-26 2019-08-15 Biosense Webster, Inc. Irrigated catheter with internal position sensor
US20200205890A1 (en) * 2017-07-25 2020-07-02 Affera, Inc. Ablation catheters and related systems and methods
US20210267671A1 (en) * 2015-11-20 2021-09-02 St. Jude Medical, Cardiology Division, Inc. Multi-electrode ablator tip having dual-mode, omni-directional feedback capabilities

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190247115A1 (en) * 2010-04-26 2019-08-15 Biosense Webster, Inc. Irrigated catheter with internal position sensor
US20210267671A1 (en) * 2015-11-20 2021-09-02 St. Jude Medical, Cardiology Division, Inc. Multi-electrode ablator tip having dual-mode, omni-directional feedback capabilities
US20190076190A1 (en) * 2016-05-02 2019-03-14 Affera, Inc. Catheter sensing and irrigating
US20200205890A1 (en) * 2017-07-25 2020-07-02 Affera, Inc. Ablation catheters and related systems and methods

Also Published As

Publication number Publication date
WO2023205817A2 (en) 2023-10-26

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