Releasably locking dilator and sheath assembly

Details Releasably locking dilator and sheath assembly Releasably locking dilator and sheath assembly

A - Human Necessities

61

M

A61M 29/00 (2006.01) A61M 25/01 (2006.01)

Patent

CA 2496169

A releasably locking dilator and sheath assembly and methods for releasing the dilator from the sheath and longitudinally splitting the sheath are provided. The assembly includes a dilator having a dilator hub and a sheath having a sheath hub. The sheath hub has two opposing winged tabs, each tab having a perpendicular portion and an angled portion as well as a female threaded portion. The dilator hub has a male threaded portion designed to engage the female threaded portion of the sheath hub. The dilator is released from the sheath by rotating the dilator 90~ in relation to the sheath and pulling the dilator out of the sheath. The sheath is longitudinally split by creating a couple on each of the winged tabs thereby forcing the sheath and the sheath hub to split longitudinally. With the sheath and sheath hub split longitudinally, the sheath is removed from around a catheter while leaving the catheter in place.

L'invention concerne un ensemble dilatateur se verrouillant de manière libérable et gaine ainsi que les procédés de libération du dilatateur de la gaine et de dissociation longitudinale de la gaine. L'ensemble comporte un dilatateur ayant un moyeu de dilatateur et une gaine ayant un moyeu de gaine. Le moyeu de gaine présente deux onglets ailés opposés, chacun présentant une partie perpendiculaire et une partie à angle ainsi qu'une partie filetée femelle. Le moyeu de dilatateur présente une partie filetée mâle conçue pour être insérée dans la partie filetée femelle du moyeu de gaine. Le dilatateur est libéré de la gaine par rotation de 90· par rapport à la gaine et par sa traction hors de la gaine. La gaine est dissociée de manière longitudinale par la création d'un couple sur chaque onglet ailé, ce qui entraîne la dissociation longitudinale de la gaine et de son moyeu. Après ladite dissociation, la gaine est retirée du cathéter sans que celui-ci ne soit déplacé.

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