Low profile tool for applying spring action ligation clips

Details Low profile tool for applying spring action ligation clips Low profile tool for applying spring action ligation clips

A - Human Necessities

61

B

A61B 17/128 (2006.01) A61B 17/122 (2006.01) A61B 17/28 (2006.01)

Patent

CA 2199741

The clip applier (10) of the current invention solves the problems of prior art tools by incorporating a pre-clamp mechanism, the function of which is to pre-clamp the vessel to be ligated to a dimension such that the center leg of the spring of the ligation clip (16) need be lifted only slightly. In this manner the spring clip (16) can be slid over the smaller pre-clamped dimensions. This ensures that the clip spring material will remain within its elastic limit while allowing the tool to maintain a low profile for use in endoscopic surgery, even on large diameter vessels.

Le dispositif d'application de pinces (10) objet de l'invention permet de résoudre le problème posé par les outils de l'état actuel de la technique, étant donné qu'il incorpore un mécanisme de serrage préalable, dont la fonction est de serrer au préalable le vaisseau à ligaturer à une dimension telle que le montant central du ressort de la pince de ligature (16) ne sera soulevé que légèrement. Ceci permettra de glisser la pince à ressort (16) au-dessus des dimensions réduites et serrées au préalable. De ce fait, le matériau de ressort de la pince restera à l'intérieur de sa limite d'élasticité et l'outil pourra conserver une caractéristique de faible dimension, de façon à l'utiliser en chirurgie endoscopique, même sur des vaisseaux présentant un diamètre important.

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