Catheter having mapping assembly

Details Catheter having mapping assembly Catheter having mapping assembly

A - Human Necessities

61

M

A61M 25/01 (2006.01) A61B 5/042 (2006.01) A61B 5/05 (2006.01)

Patent

CA 2399919

A catheter that is particularly useful for mapping tubular regions of the heart, such as the pulmonary vein, is provided. The catheter comprises an elongated tubular catheter body having an outer wall, proximal and distal ends, and at least one lumen extending therethrough. The catheter further includes a mapping assembly, which comprises a tubular structure comprising a generally circular main region generally transverse and distal to the catheter body and having an outer circumference and a generally straight distal region distal to the main region, wherein the tubular structure comprises a non-conductive cover over at least the main region of the mapping assembly. A support member having shape-memory is disposed within at least the main region of the mapping assembly. A plurality of electrode pairs, each comprising two ring electrodes, are carried by the generally circular main region of the mapping assembly.

L'invention décrit un cathéter particulièrement utile pour la cartographie des vaisseaux coronaires tels que la veine pulmonaire. Ce dispositif comprend un corps de cathéter en forme de tube allongé muni d'une paroi extérieure, d'extrémités proximale et distale et d'au moins une lumière s'étendant à l'intérieur. Ledit cathéter est en outre équipé d'un dispositif de cartographie formé d'une structure tubulaire comprenant une zone principale généralement circulaire disposée transversalement et distale par rapport au corps du cathéter, laquelle a une circonférence extérieure et une zone sensiblement rectiligne éloignée de la zone principale. La structure tubulaire en question est munie d'un couvercle non conducteur qui recouvre au moins la zone principale du dispositif cartographique. Un élément de support à mémoire de forme est disposé au moins à l'intérieur de la zone principale du dispositif de cartographie. La zone principale généralement circulaire du dispositif de cartographie est munie d'une pluralité de paires d'électrodes dont chacune comprend au moins deux électrodes annulaires.

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