A dilation catheter

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/10 (2006.01)

Patent

CA 2717821

A catheter (10) for treating stenotic sites in the human body (e.g. in the azygos vein) includes an expandable portion (12) having, when expanded, an arched shape. The arched shape may extends over an angle (.alpha.) of at least 90° degrees, and preferably of between 90° and 120° degrees, with a radius (R) of less than 3 centimetres, and preferably between 2 and 3 centimetres. The expandable portion (12) may include a flexible support member, and expandable members coupled to the support member to impart, when expanded, the desired arched shape to the flexible support member. Alternatively, the expandable portion (12) may includes an actuator member acting longitudinally of and sidewise to the expandable portion to impart thereto the desired arched shape.

L'invention concerne un cathéter (10) destiné au traitement des sites sténosés dans le corps humain (par ex. dans la veine azygos) qui inclut une partie dilatable (12) ayant, lorsqu'elle est dilatée, une forme arquée. La forme arquée peut s'étendre sur un angle (a) d'au moins 90 degrés, et compris de préférence entre 90° et 120°, avec un rayon ® de moins de 3 centimètres, et de préférence compris entre 2 et 3 centimètres. La partie dilatable (12) peut inclure un élément support flexible et des éléments dilatables couplés à l'élément support pour conférer, lorsqu'ils sont dilatés, la forme arquée souhaitée à l'élément support flexible. Sinon, la partie dilatable (12) peut inclure un élément d'actionnement agissant longitudinalement de et latéralement par rapport à la partie dilatable pour lui conférer la forme arquée souhaitée.

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