Patent ID: 6673043
Filing Date: 2004-01-06
Classification: A61B,A61M

Abstract:
A cannulation device comprising:a handle; a plurality of pins in a circular array projecting from an end of said handle; an actuator on said handle operatively connected with said pins for spreading said array from a narrow configuration in which said pins are insertable through an incision in tissue in which cannulation is to be effected into a wide position in which said tissue is radially and elastically spread at said incision; and a cannula in said handle insertable through said array in said wide position for anchoring in said tissue by contraction of said tissue around said incision, said pins being formed as generally linear shanks on respective wire springs, each of said wire springs having a pivot portion parallel to the respective shank but offset laterally therefrom and a connecting portion between the respective shank and the respective pivot portion, said actuator including a sleeve provided with formations engaging said wire springs and rotating said connecting portions about axes of said pivot portions to radially displace said shanks between said positions.