Percutaneous dilation apparatus

Details Percutaneous dilation apparatus Percutaneous dilation apparatus

A - Human Necessities

61

M

A61M 29/00 (2006.01) A61B 17/34 (2006.01)

Patent

CA 2640566

A percutaneous dilation apparatus (10) is shown. The apparatus (10) is useful for forming and enlarging percutaneous penetrations to a variety of target locations within a patient's body for multiple purposes. The apparatus includes an elongate dilation tube (12), a plurality of elongate expansion members (14) disposed in a nested concentric arrangement around the elongate expansion tube, and an outer sheath (16) for capturing the plurality of elongate expansion members and maintaining the apparatus in an assembled configuration. Each expansion member (14) is independently movable from a first to a second position along the central axis of the tube as well as each concentrically smaller member. A trocar may be provided for slidably engaging the lumen through the elongate dilatation tube.

L'invention a trait à un appareil de dilatation percutanée (10). L'appareil selon l'invention est utile pour former et agrandir, à des fins multiples, des ouvertures percutanées donnant accès à divers emplacements cibles dans le corps d'un patient. L'appareil selon l'invention comprend un tube de dilatation allongé (12), une pluralité d'éléments d'expansion allongés (14) disposés selon un agencement concentrique imbriqué autour du tube de dilatation allongé, et une gaine externe (16) destinée à capturer la pluralité d'éléments d'expansion allongés et à maintenir l'appareil dans une configuration assemblée. Chaque élément d'expansion (14) peut se déplacer indépendamment d'une première position à une seconde position, le long de l'axe central du tube et de chaque élément concentrique de taille inférieure. Un trocart peut être conçu pour venir en prise coulissante avec la lumière à travers le tue de dilatation allongé.

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