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1. (WO1997037607) LINEAR ABLATION DEVICE AND ASSEMBLY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/037607 International Application No.: PCT/US1997/005714
Publication Date: 16.10.1997 International Filing Date: 08.04.1997
Chapter 2 Demand Filed: 10.11.1997
IPC:
A61B 18/14 (2006.01) ,A61M 25/01 (2006.01) ,A61N 1/40 (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
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
25
Catheters; Hollow probes
01
Introducing, guiding, advancing, emplacing or holding catheters
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
N
ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1
Electrotherapy; Circuits therefor
40
Applying electric fields by inductive or capacitive coupling
Applicants:
CARDIMA, INC. [US/US]; 47266 Benicia Street Fremont, CA 94538, US
Inventors:
SCHAER, Alan, K.; US
Agent:
LYNCH, Edward, J.; Heller Ehrman White & McAuliffe 525 University Avenue Palo Alto, CA 94301-1900 , US
Priority Data:
08/629,05708.04.1996US
08/659,76906.06.1996US
Title (EN) LINEAR ABLATION DEVICE AND ASSEMBLY
(FR) DISPOSITIF ET ENSEMBLE D'ABLATION LINEAIRE
Abstract:
(EN) An intravascular device for the formation of linear lesions which has particular utility in the treatment of atrial fibrillation and flutter. The intravascular device has an outer delivery sheath (11) with a distal section (25) which has an elongated opening (28) and a support member (26) coextending with the opening (28). An EP device (12) having a plurality of electrodes (32) on its distal portion (31) is slidably disposed within the inner lumen (13) of the delivery sheath (11) but it is secured by its distal end within the distal extremity of the delivery sheath (11) at least while in operation. In this manner an axial force in the distal direction on the proximal extremity of the EP device (12), which extends out of the patient during the procedure, will cause the distal portion of the EP device (12) to arch outwardly out of and away from the distal section (25) of the delivery sheath (11) and engage the surface of the patient's heart chamber. High frequency, e.g. RF, electrical energy delivered to the electrodes (32) on the distal shaft section (31) of the EP device (12) will form a linear lesion which terminates the fibrillation or flutter.
(FR) Dispositif intravasculaire pour la formation de lésions linéaires, particulièrement utile au traitement de la fibrillation et du flutter auriculaires. Le dispositif intravasculaire comporte une gaine d'application extérieure (11) présentant une section distale (25) à ouverture allongée (28) et un élément support (26) s'étendant dans la même direction que l'ouverture (28). Un dispositif électrophysiologique (12) comportant une pluralité d'électrodes (32) sur sa partie distale (31) est disposé de façon coulissante dans la lumière intérieure (13) de la gaine d'application (11) mais est fixé par son extrémité distale à l'intérieur de l'extrémité distale de la gaine d'application (11), au moins pendant le fonctionnement. De la sorte, une force axiale appliquée dans la direction distale sur l'extrémité proximale du dispositif électrophysiologique (12), qui s'étend à l'extérieur du patient pendant l'opération, amènera la partie distale du dispositif électrophysiologique (12) à s'arquer vers l'extérieur, s'éloignant de la section distale (25) de la gaine d'application (11), et à entrer en contact avec la surface de la cavité cardiaque du patient. L'application d'une énergie électrique haute fréquence, par exemple radiofréquence, aux électrodes (32) sur la section d'axe distale (31) du dispositif électrophysiologique (12) entraînera une lésion linéaire qui fera cesser la fibrillation ou le flutter.
Designated States: AU, CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0902656EP1371339JP2000516110 CA2251041AU1997026087