Low profile introducer apparatus

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/09 (2006.01) A61M 25/06 (2006.01)

Patent

CA 2605897

An introducer apparatus includes an outer sleeve (12) and an inner cannula (20) received within the lumen (15) of the outer sleeve. The outer sleeve has a profile such that at least a portion of the distal end of the outer sleeve tapers in the distal direction at an angle not exceeding about 2.5~ relative to a longitudinal axis of the apparatus. The distal open end of the outer sleeve has a wall thickness not exceeding about 0.003 inch, and is sized such that a first wire guide is receivable therethrough. The inner cannula includes a tapered distal end portion. The inner cannula distal open end is sized such that a second wire guide is receivable therethrough, and the first wire guide is not receivable therethrough. The tapered distal portion of the inner cannula extends distal to the distal open end of the outer sleeve, such that a generally smooth diametrical transition is provided between the outer sleeve tapered portion and the open distal end of the inner cannula.

Un appareil introducteur comprend une gaine extérieure (12) et une canule intérieure (20) logée dans la lumière (15) de la gaine extérieure. La gaine extérieure possède une forme selon laquelle au moins une partie de son extrémité distale extérieure est conique dans la direction distale selon un angle ne dépassant pas 2,5° par rapport à un axe longitudinal de l'appareil. L'extrémité ouverte distale de la gaine extérieure possède une épaisseur de paroi d'au plus environ 0,003 pouce et présente une taille lui permettant de loger un premier guide-fil. La canule intérieure comprend une partie d'extrémité distale conique et possède une taille lui permettant de loger un second guide-fil, le premier guide-fil ne pouvant s'y loger. La partie distale conique de la canule intérieure s'étend de manière distale par rapport à l'extrémité ouverte distale de la gaine extérieure, si bien qu'une transition diamétrale généralement douce est assurée entre la partie conique de la gaine extérieure et l'extrémité distale ouverte de la canule intérieure.

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