Sizing catheter for measuring septal defects

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/02 (2006.01) A61B 5/107 (2006.01) A61M 25/10 (2006.01)

Patent

CA 2341228

This invention is a sizing catheter (10), and method of measuring a preselected internal opening within a patient to provide a rapid, precise determination of a stretched diameter of the preselected internal opening. The sizing catheter (10) includes a dilation balloon (26) constructed of a thin expandable plastic which is inflatable, and is utilized to determine a size of the preselected opening. The dilation balloon (26) is inflated to an inflation threshold, wherein the dilation balloon (26) deforms about the preselected opening, and the size of the dilation balloon (26) adjacent the preselected opening approximates a stretched diameter of the preselected opening. The sizing catheter (10), and method may be utilized to determine an appropriate sized occluding device to thereby occlude the preselected opening.

L'invention porte sur un cathéter (10) destiné à déterminer le diamètre d'un passage et sur un procédé de mesure, sur un patient, d'une ouverture interne présélectionnée, ce procédé visant à déterminer rapidement et avec précision le diamètre allongé de cette ouverture. Le cathéter (10) comprend un ballonnet (26) de dilatation conçu dans un plastique fin, extensible, gonflable et utilisé pour déterminer la taille de l'ouverture présélectionnée. Le ballonnet (26) est gonflé jusqu'à un seuil de gonflage et épouse le pourtour de l'ouverture présélectionnée, la taille du ballonnet (26) adjacent à l'ouverture présélectionnée avoisinant le diamètre allongé de l'ouverture. Le cathéter (10) et ce procédé peuvent être utilisés pour déterminer un dispositif d'occlusion aux dimensions appropriées permettant de fermer l'ouverture présélectionnée.

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