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1. (WO1997017905) MULTIPLE ELECTRODE SUPPORT STRUCTURES HAVING OPTIMAL BIO-MECHANICAL CHARACTERISTICS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017905 International Application No.: PCT/US1996/018332
Publication Date: 22.05.1997 International Filing Date: 12.11.1996
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:
EP TECHNOLOGIES, INC. [US/US]; 350 Potrero Avenue Sunnyvale, CA 94086, US
Inventors:
KORDIS, Thomas, F.; US
PANESCU, Dorin; US
WHAYNE, James, G.; US
Agent:
RYAN, Daniel, D. ; 633 West Wisconsin Avenue Milwaukee, WI 53203, US
Priority Data:
08/557,79013.11.1995US
Title (EN) MULTIPLE ELECTRODE SUPPORT STRUCTURES HAVING OPTIMAL BIO-MECHANICAL CHARACTERISTICS
(FR) STRUCTURES DE SUPPORT D'ELECTRODES MULTIPLES PRESENTANT DES CARACTERISTIQUES BIOMECANIQUES OPTIMALES
Abstract:
(EN) An electrode support structure comprises a distal hub (48) and a proximal base (12) aligned along a major axis with the distal hub (48). An array of generally flexible spline elements (180) extends between the hub (48) and the base (12). The spline elements (180) each have an elongated axis that, at the base (12), extends generally parallel to the major axis and, at the hub (48), extends at an angle measured relative to the major axis of between 45 degrees and 110 degrees. The spline elements (180) collectively define a distal surface (66) lying within an envelope that approximates the curvature of endocardial tissue and within which envelope the distal hub (48) lies. According to this aspect of the invention, the distal surface (66), when contacting endocardial tissue, increases in surface area in response to force applied generally along the major axis to mediate tissue pressure.
(FR) L'invention concerne une structure de support d'électrodes comprenant un moyeu distal (48) et une base proximale (12) alignée sur ce dernier le long d'un axe principal. Un ensemble de baguettes (180) généralement flexibles s'étend entre le moyeu (48) et la base (12). Ces baguettes (180) présentent chacune un axe longitudinal qui, au niveau de la base (12), est généralement parallèle à l'axe principal et, au niveau du moyeu (48), forme un angle compris entre 45°et 110° par rapport à l'axe principal. Les baguettes (180) définissent collectivement une surface distale (66) située à l'intérieur d'une enveloppe proche de la courbure du tissu endocardiaque, le moyeu distal (48) étant situé à l'intérieur de ladite enveloppe. Selon cet aspect de l'invention, lorsque l'extrémité distale est en contact avec le tissu endocardiaque, l'aire de la surface distale (66) augmente en réaction à la force appliquée généralement le long de l'axe principal pour exercer une pression sur le tissu.
Designated States: 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:
EP0801541JPH11501554 CA2210296