Endocardial catheter system for wavelength measurement,...

A - Human Necessities – 61 – B

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A61B 18/14 (2006.01)

Patent

CA 2348558

The present invention relates to a catheter system comprising: an elongated tubular member (111) with a plurality of lumens and electrical conductors threaded therethrough from proximal to distal extremity. The lumens are either inflation lumens or great lumens allowing other catheters moving slidably thereon; a head portion which has one or a plurality of arms (112, 113) having proximal and distal extremities. The proximal extremity of the arms are connected to the distal extremity of the elongated member. There are a plurality of longitudinally spaced-apart electrodes (115, 117) provided on each arm and connected to conductors of the elongated member. The head portion undergoes an expanded and a contracted position by an expanding system (114); a stabilising system (116) bonded to the head portion having a contracted and expanded position. In expanded position, this system applies firmly the working head to the cardiac wall under investigation.

L'invention concerne un système de cathéter comprenant un élément tubulaire allongé (111) pourvu de plusieurs lumières et, de l'extrémité proximale à l'extrémité distale, des conducteurs électriques filetés. Les lumières sont soit des lumières de dilatation ou de grandes lumières sur lesquelles d'autres cathéters peuvent coulisser. Le système comprend également une partie tête pourvue d'au moins un bras (112, 113) ayant des extrémités proximales et distales. L'extrémité proximale des bras est reliée à l'extrémité distale de l'élément allongé. Plusieurs électrodes (115, 117) espacées longitudinalement et disposées sur chaque bras, sont reliées à des conducteurs de l'élément allongé. La partie tête passe d'une position dilatée en une position contractée à l'aide d'un système d'expansion (114). Le système de cathéter comprend enfin un système de stabilisation (116) lié à la partie tête en position contractée et dilatée. En position dilatée, ledit système applique fermement la tête de travail à la paroi cardiaque examinée.

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