Pleated trocar shield

A - Human Necessities – 61 – B

Patent

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Details

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

Patent

CA 2747759

A surgical access device or trocar (1000) defines an access channel for instruments extending from a proximal end to the distal end thereof. The trocar comprises a cannula (1100) and a seal assembly (1200) disposed at the proximal end of the cannula. The seal assembly comprises a first or zero seal (1240), a second or instrument seal (1250), and a trocar shield (1260) disposed proximally of the first seal and the second seal. The first seal seals the access channel in the absence of an instrument extending therethrough. The second seal seals the access channel in the presence of an instrument extending therethrough. The trocar shield protects the first seal and second seal from damage as an instrument is advanced through the access channel The trocar shield comprises an open proximal end (1262) and a tapered distal end (1264) comprising a plurality of longitudinal pleats (1268), converging in an opening (1270).

La présente invention concerne un dispositif d'accès chirurgical ou trocart (1000) qui définit un canal d'accès pour des instruments s'étendant depuis une extrémité proximale jusqu'à une extrémité distale de ceux-ci. Ledit trocart comprend une canule (1100) et un ensemble joint (1200) disposé à l'extrémité proximale de la canule. Ledit ensemble joint comprend un premier joint ou joint zéro (1240), un second joint ou joint instrument (1250), et une protection de trocart (1260) disposée de manière proximale au premier joint et au second joint. Le premier joint ferme hermétiquement le canal d'accès en l'absence d'un instrument s'étendant à travers. Le second joint ferme hermétiquement le canal d'accès en présence d'un instrument s'étendant à travers. La protection de trocart protège le premier joint et le second joint des dommages lorsqu'un instrument s'avance à travers le canal d'accès. Ladite protection de trocart comprend une extrémité proximale ouverte (1262) et une extrémité distale effilée (1264) comprenant une pluralité de plis longitudinaux (1268), convergeant en une ouverture (1270).

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