WO2007002004A3 - Ablation catheter with fluid distribution structures - Google Patents

Ablation catheter with fluid distribution structures Download PDF

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Publication number
WO2007002004A3
WO2007002004A3 PCT/US2006/023854 US2006023854W WO2007002004A3 WO 2007002004 A3 WO2007002004 A3 WO 2007002004A3 US 2006023854 W US2006023854 W US 2006023854W WO 2007002004 A3 WO2007002004 A3 WO 2007002004A3
Authority
WO
WIPO (PCT)
Prior art keywords
uniform
catheter
tissue
lesion
fluid distribution
Prior art date
Application number
PCT/US2006/023854
Other languages
French (fr)
Other versions
WO2007002004A2 (en
Inventor
Hong Cao
Chou Thao
Kedar Ravindra Belhe
Saurav Paul
Todd Stangenes
Original Assignee
St Jude Medical Atrial Fibrill
Hong Cao
Chou Thao
Kedar Ravindra Belhe
Saurav Paul
Todd Stangenes
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
Application filed by St Jude Medical Atrial Fibrill, Hong Cao, Chou Thao, Kedar Ravindra Belhe, Saurav Paul, Todd Stangenes filed Critical St Jude Medical Atrial Fibrill
Publication of WO2007002004A2 publication Critical patent/WO2007002004A2/en
Publication of WO2007002004A3 publication Critical patent/WO2007002004A3/en

Links

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
    • A61B2018/00315—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
    • A61B2018/00375—Ostium, e.g. ostium of pulmonary vein or artery
    • 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
    • A61B2018/1472—Probes or electrodes therefor for use with liquid electrolyte, e.g. virtual electrodes

Abstract

An ablation catheter (22) has improved fluid distribution structures. An ablation section at a distal end (12) of the catheter (22) is designed to provide a more uniform fluid flow emanating from the catheter (22). By creating a uniform fluid flow, a more uniform tissue lesion results and the possibility of charring the tissue is reduced. A combination of mesh material (142) layers, porous materials (354), and dispersion channels or openings (346) are used to achieve the uniform flow. The amount of fluid used as a virtual electrode to ablate the tissue is greatly reduced with the present invention. Further, the catheter (22) may be used to create a single, uniform linear lesion by successive application of energy to adjacent portions of the ablation section, thus reducing the power required to create the desired lesion.
PCT/US2006/023854 2005-06-21 2006-06-19 Ablation catheter with fluid distribution structures WO2007002004A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/158,944 2005-06-21
US11/158,944 US7819868B2 (en) 2005-06-21 2005-06-21 Ablation catheter with fluid distribution structures

Publications (2)

Publication Number Publication Date
WO2007002004A2 WO2007002004A2 (en) 2007-01-04
WO2007002004A3 true WO2007002004A3 (en) 2008-02-14

Family

ID=37574394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/023854 WO2007002004A2 (en) 2005-06-21 2006-06-19 Ablation catheter with fluid distribution structures

Country Status (2)

Country Link
US (1) US7819868B2 (en)
WO (1) WO2007002004A2 (en)

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