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1. (WO1999000060) ELECTROSURGICAL CATHETER FOR RESOLVING OBSTRUCTIONS BY RADIO FREQUENCY ABLATION
PCT Biblio. Data
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Pub. No.:
WO/1999/000060
International Application No.:
PCT/US1998/013382
Publication Date:
07.01.1999
International Filing Date:
26.06.1998
IPC:
A61B 18/14
(2006.01)
A
HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04
by heating
12
by passing a current through the tissue to be heated, e.g. high-frequency current
14
Probes or electrodes therefor
Applicants:
ADVANCED CORONARY INTERVENTION
[US/US]; Suite 101 2 Inverness Drive Esat Englewood, CO 80112, US
Inventors:
JANSSEN, W., Michael
; US
McGARRY, Michael, C.
; US
STOCKMOE, Scott
; US
Agent:
WEINBERG, Peter, F.
; Davis, Graham & Stubbs LLP Suite 4700 370 17th Street P.O. Box 185 Denver, CO 80201-0185, US
Priority Data:
08/882,953
26.06.1997
US
Title
(EN)
ELECTROSURGICAL CATHETER FOR RESOLVING OBSTRUCTIONS BY RADIO FREQUENCY ABLATION
(FR)
CATHETER ELECTROCHIRURGICAL SERVANT A TRAITER DES OBSTRUCTIONS PAR ABLATION HAUTE FREQUENCE
Abstract:
(EN)
A method and device (10) resolve occlusive deposits in a tubular passage of a subject by radio frequency ablation. The device (10) has a distal end (20) which is inserted within, along the lumen of a tubular body member, and may be manipulated therethrough to a desired position where the device will be operated. The device (10) includes an elongated flexible hollow tube (12) having a distal end, a proximal end, and a diameter smaller than the diameter of the tubular body member into which the device is being inserted. A number of electrodes (14) adjacent the distal end of the device, capability for selectively supplying radio frequency electrical current to at least one of said electrodes (14), and capability such as an inflatable balloon (30) for radially positioning the electrodes (14) with respect to the tube. Another embodiment includes electrodes (14) at varying radial positions so that at least one of such electrodes (14) will be capable of ablating material at varying positions within the lumen.
(FR)
L'invention concerne un procédé et un dispositif (10) permettant de décomposer des dépôts occlusifs situés dans un passage tubulaire d'un sujet par ablation haute fréquence. Le dispositif (10) présente une extrémité (20) distale qui est insérée à l'intérieur et le long d'une lumière d'un élément de corps tubulaire, et qui peut être manipulée à travers celle-ci pour atteindre une position voulue, dans laquelle le dispositif est actionné. Le dispositif (10) comporte une tube (12) creux flexible allongé présentant une extrémité distale, une extrémité proximale, et un diamètre inférieur à celui de l'élément de corps tubulaire dans lequel le dispositif est inséré; un certain nombre d'électrodes (14) adjacentes à l'extrémité distale du dispositif; un moyen permettant d'alimenter de manière sélective en courant électrique haute fréquence au moins une desdites électrodes (14); et un moyen, tel un ballonnet (30) gonflable, servant à positionner radialement les électrodes (14) par rapport au tube. Un autre mode de réalisation comporte des électrodes (14) placées à diverses positions radiales, de sorte qu'au moins une de ces électrodes (14) est capable d'effectuer une ablation de matière à diverses positions à l'intérieur de la lumière.
Designated States:
CA, JP
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)