WO2005009218A3 - Ablation device with spiral array ultrasound transducer - Google Patents

Ablation device with spiral array ultrasound transducer Download PDF

Info

Publication number
WO2005009218A3
WO2005009218A3 PCT/US2004/023213 US2004023213W WO2005009218A3 WO 2005009218 A3 WO2005009218 A3 WO 2005009218A3 US 2004023213 W US2004023213 W US 2004023213W WO 2005009218 A3 WO2005009218 A3 WO 2005009218A3
Authority
WO
WIPO (PCT)
Prior art keywords
helical
transducer
cylindrical
ultrasound transducer
ablation device
Prior art date
Application number
PCT/US2004/023213
Other languages
French (fr)
Other versions
WO2005009218A2 (en
Inventor
Yaron Keidar
Original Assignee
Biosense Webster Inc
Yaron Keidar
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 Biosense Webster Inc, Yaron Keidar filed Critical Biosense Webster Inc
Priority to EP04778623.1A priority Critical patent/EP1646326B1/en
Priority to AU2004258943A priority patent/AU2004258943B2/en
Priority to CA2533537A priority patent/CA2533537C/en
Priority to JP2006521172A priority patent/JP4588703B2/en
Publication of WO2005009218A2 publication Critical patent/WO2005009218A2/en
Publication of WO2005009218A3 publication Critical patent/WO2005009218A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • B06B1/0633—Cylindrical array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
    • A61B17/2202—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being inside patient's body at the distal end of the catheter
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/87—Electrodes or interconnections, e.g. leads or terminals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00238—Type of minimally invasive operation
    • A61B2017/00243—Type of minimally invasive operation cardiac
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22027—Features of transducers
    • A61B2017/22028—Features of transducers arrays, e.g. phased arrays

Abstract

The present invention relates to a device assembly and tissue ablation transducer (400) having a plurality of helical elements that can be operated out of phase to orient the acoustical energy beam forward or backward in the longitudinal direction. The transducers includes a cylindrical inner electrode (402), a cylindrical piezoelectric (403) material disposed over the inner electrode, and a cylindrical outer electrode (404) disposed over the cylindrical piezoelectric material. Spiral grooves (figure 4a) are cut through at least the outer electrode separating the transducer into a plurality of functionally discrete helical transducer segments. The helical transducer segments can be operated independent from one another. An array of intertwined helical transducers arranged linearly along a helical axis are also contemplated.
PCT/US2004/023213 2003-07-21 2004-07-20 Ablation device with spiral array ultrasound transducer WO2005009218A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04778623.1A EP1646326B1 (en) 2003-07-21 2004-07-20 Ablation device with spiral array ultrasound transducer
AU2004258943A AU2004258943B2 (en) 2003-07-21 2004-07-20 Ablation device with spiral array ultrasound transducer
CA2533537A CA2533537C (en) 2003-07-21 2004-07-20 Ablation device with spiral array ultrasound transducer
JP2006521172A JP4588703B2 (en) 2003-07-21 2004-07-20 Ablation device with helical array ultrasonic transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/624,151 US7670335B2 (en) 2003-07-21 2003-07-21 Ablation device with spiral array ultrasound transducer
US10/624,151 2003-07-21

Publications (2)

Publication Number Publication Date
WO2005009218A2 WO2005009218A2 (en) 2005-02-03
WO2005009218A3 true WO2005009218A3 (en) 2005-06-09

Family

ID=34079933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/023213 WO2005009218A2 (en) 2003-07-21 2004-07-20 Ablation device with spiral array ultrasound transducer

Country Status (6)

Country Link
US (1) US7670335B2 (en)
EP (1) EP1646326B1 (en)
JP (1) JP4588703B2 (en)
AU (1) AU2004258943B2 (en)
CA (1) CA2533537C (en)
WO (1) WO2005009218A2 (en)

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Publication number Priority date Publication date Assignee Title
US8974445B2 (en) 2009-01-09 2015-03-10 Recor Medical, Inc. Methods and apparatus for treatment of cardiac valve insufficiency

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US7670335B2 (en) 2010-03-02
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