Invasive ablation probe with non-coring distal tip

A - Human Necessities – 61 – B

Patent

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Details

A61B 18/14 (2006.01) A61N 1/06 (2006.01)

Patent

CA 2562052

An invasive medical device for delivery radio frequency energy to a target tissue region includes an elongate delivery cannula having a lumen in communication with a distal opening. A deployment member is positioned and longitudinally movable in the lumen. An array of electrode elements are secured to a distal end of the deployment member, the deployment member being movable from a delivery position, in which the electrode elements are positioned within the lumen, to a deployed position, in which the electrode elements extend distally out of the cannula distal opening. A sealing member formed from a bio-compatible material sufficiently rigid to penetrate solid body tissue partially extends from, and substantially seals, the distal cannula opening when the deployment member is in the delivery position.

Un dispositif médical effractif pour administrer une énergie de radiofréquence à une région de tissu cible comprenant une canule d'administration allongée présentant une lumière en communication avec une ouverture distale. Un élément de déploiement est placé et se déplace sur la longueur dans la lumière. Un réseau d'éléments électrodes sont fixés à une extrémité distale de l'élément de déploiement, ce dernier pouvant se déplacer d'une position d'administration, dans laquelle les éléments électrodes sont placés dans la lumière, à une position déployée, dans laquelle les éléments électrodes s'étendent distalement hors de l'ouverture distale de la canule. Un élément joint formé à partir d'une matière biocompatible suffisamment rigide pour pénétrer dans un tissu corporel solide s'étend partiellement depuis, et étanchéifie sensiblement, l'ouverture de la canule distale lorsque l'élément de déploiement est en position d'administration.

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