Stent delivery device

Details Stent delivery device Stent delivery device

A - Human Necessities

61

F

A61F 2/06 (2006.01)

Patent

CA 2412638

A unidirectional handle device for an endoluminal device includes an outer tubular member and an elongate inner member slidably received in the outer tubular member. The unidirectional handle includes a handle member, a needle bearing clutch disposed in the handle member, a control member guide, and shaft rotatable in a single direction disposed within the handle member. The shaft is rotatable in a single direction by its engagement with the needle bearing clutch. The shaft is in rotational engagement with the outer tubular member of the endoluminal device. The outer tubular member is slidable from a distal position to a proximal position when the shaft is rotated in the single direction. The unidirectional handle device provides substantially no backlash of the outer tubular member. In addition, the unidirectional handle device advantageously produces a tension-retaining effect during use.

L'invention concerne un dispositif à manche unidirectionnel destiné à équiper un dispositif endoluminal, qui comprend un élément tubulaire extérieur et un élément intérieur allongé disposé coulissant sur l'élément tubulaire extérieur. Le manche unidirectionnel comprend un élément de manche, un embrayage à roulement à aiguilles disposé à l'intérieur du manche unidirectionnel, un guide d'élément de commande, et une tige pivotant dans un seul sens disposé à l'intérieur du manche unidirectionnel. La tige pivote dans un seul sens du fait de son accrochage avec l'embrayage à roulement à aiguilles. La tige est en prise rotative avec l'élément tubulaire extérieur du dispositif endoluminal. L'élément tubulaire extérieur peut être glissé d'une position distale à une position proximale lorsque la tige est pivotée dans un seul sens. Le manche unidirectionnel ne provoque sensiblement aucun jeu d'engrènement de l'élément tubulaire extérieur; il présente en outre l'avantage de produire un effet de maintien de tension pendant l'utilisation.

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