Devices for delivering agents to tissue region while...

A - Human Necessities – 61 – B

Patent

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Details

A61B 18/14 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2576147

An apparatus (10) for delivering an agent to a target site within a body includes an outer tubular body (12), an inner tubular body (20) slidably disposed within the outer tubular body, a substance delivery port (60, 25) located on the inner tubular body, and an electrode (50) secured to the outer tubular body. The delivery port can be used to deliver a substance to the target site, and the electrode can be used to seal an access channel leading to the treatment site, thereby substantially preventing migration of material from the delivery site. In order to minimize the profile of the apparatus, a braided conductor (352) can extend through the wall of the outer tubular body, thereby providing a means for delivering electrical energy to the electrode (50, 330), while strengthening the wall of the outer tubular body to minimize the risk of rupture during delivery of the substance.

L'invention concerne un appareil permettant d'administrer un agent au niveau d'un site cible à l'intérieur d'un corps. Cet appareil comprend un corps tubulaire externe, un corps tubulaire interne disposé coulissant au sein du corps tubulaire externe, un orifice d'administration de substance situé sur le corps tubulaire interne, et une électrode fixée sur le corps tubulaire externe. Cet orifice d'administration peut être utilisé pour administrer une substance au niveau d'un site cible, et l'électrode peut être utilisée pour fermer hermétiquement un canal d'accès menant au site de traitement, ce qui permet de prévenir sensiblement la migration de matière à partir du site d'administration. En vue de minimiser le profil de l'appareil, un conducteur tressé peut s'étendre à travers la paroi du corps tubulaire externe, ce qui engendre un dispositif de distribution d'énergie électrique à l'électrode, tandis que la paroi du corps tubulaire externe est renforcée afin de minimiser le risque de rupture, pendant l'administration de la substance.

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