Cannula with instrument seal

Details Cannula with instrument seal Cannula with instrument seal

A - Human Necessities

61

B

A61B 17/34 (2006.01) A61B 17/02 (2006.01)

Patent

CA 2533798

A cannula comprises a proximal instrument insertion portion (951) having a seal (952) for sealingly engaging with an instrument shaft (955), and a distal tubular portion (950) defining an access channel for extension of the instrument (955) therethrough. The proximal portion (951) is movably coupled to the distal portion (950) to facilitate relative movement between the proximal portion (951) and the distal portion (950) to accommodate lateral movement of the instrument (955) passing therethrough whilst maintaining sealing engagement between the seal (952) and the instrument shaft (955).

Cette invention concerne une canule comprenant une partie distale d'insertion d'instrument (951) dotée d'un joint (952) avec une tige d'instrument (955), et une partie tubulaire distale (950) définissant un canal d'accès que traverse l'instrument (955). La partie proximale (951) est reliée mobile à la partie distale (950), ce qui facilite le mouvement relatif entre ladite partie proximale (951) et la partie distale (950) et absorbe le mouvement latéral de l'instrument (955) qui les traverse sans compromettre l'efficacité de l'étanchéité entre le joint (952) et la tige d'instrument (955).

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