Self-retaining surgical access instrument

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/34 (2006.01)

Patent

CA 2371884

A surgical access device for permitting introduction of instrumentation within tissue, includes an elongate member defining a longitudinal axis and proximal and distal ends, a first peripheral projection disposed on an outer wall of the elongate member and defining a proximal ledge dimensioned to resist movement of the elongate member in a first longitudinal direction corresponding to a withdrawal direction of the elongate member with respect to the tissue, a second peripheral projection disposed on the outer wall of the elongate member proximal of the first peripheral projection and defining a distal ledge dimensioned to resist movement of the elongate member in a second longitudinal direction corresponding to an insertion direction of the elongate member with respect to the tissue whereby the first and second peripheral projections cooperate to retain the elongate member within the tissue.

L'invention porte sur un dispositif d'accès chirurgical qui permet d'introduire un instrument dans un tissu et qui comprend un élément allongé formant un axe longitudinal et des extrémités proximale et distale ; une première partie saillante périphérique située sur une paroi extérieure de l'élément allongé et formant un rebord proximal dimensionné de façon à résister au déplacement de l'élément allongé dans une première direction longitudinale correspondant au sens de retrait de l'élément allongé par rapport au tissu ; une seconde partie saillante périphérique située sur la paroi extérieure de l'élément allongé proche de la première partie saillante périphérique et formant un rebord distal dimensionné de façon à résister au déplacement de l'élément allongé dans une seconde direction longitudinale correspondant à un sens d'introduction de l'élément allongé par rapport au tissu, les première et seconde parties saillantes périphériques coopérant de façon à maintenir l'élément allongé dans le tissu.

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