Method and apparatus for percutaneously accessing an...

A - Human Necessities – 61 – M

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A61M 39/02 (2006.01) A61M 5/158 (2006.01)

Patent

CA 2295831

Methods and apparatus for percutaneously accessing an implanted port uses an access cannula which is periodically introduced to an aperture on the implanted port so that the cannula passes through the same tissue tract. It has been found that repeated passage of the cannula through the same tissue tract creates an artificial passage lined with scar tissue that permits subsequent non-surgical access, reduces patient trauma, minimizes bleeding, and reduces sensitivity. The tract may be initially formed by percutaneously placing a penetrating element through intact skin to the port and leaving the element in place for a time sufficient to create the tract.

On décrit des procédés et un appareil permettant d'accéder par voie percutanée à l'orifice d'un dispositif implanté dans lesquels on utilise une canule d'accès qui est périodiquement introduite dans une ouverture située sur l'orifice implanté de manière à ce que la canule traverse les tissus au même endroit. On a découvert que le passage répété de la canule par le même passage crée un passage artificiel recouvert d'un tissu cicatriciel qui autorise ensuite l'accès par voie non chirurgicale, réduit le traumatisme du patient, réduit les saignements et la sensibilité. Pour former initialement le passage on peut placer par voie percutanée un élément de pénétration dans la peau intacte jusqu'à l'orifice et laisser l'élément en place pendant une durée suffisante pour créer ledit passage.

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