Patent ID: 6146400
Filing Date: 2000-11-14
Classification: A61B

Abstract:
A method for minimally invasive cannulation of body tissue, comprising the steps of:inserting an elongate member into the lumen of a cannula, the cannula having a proximal end, a distal end, a lumen therebetween, and at least one venous drainage port, the elongate member having proximal and distal ends, an actuating mechanism mounted at the proximal end of the elongate member, and a surgical blade mounted on the distal end of the elongate member and operable by manipulating the actuating mechanism at the proximal end;making an incision on the right atrium by activating the surgical blade on the elongate member;inserting the cannula through the incision;advancing the distal end of the cannula into the right atrium;withdrawing the elongate member from the lumen of the cannula; andwithdrawing blood through the venous drainage port.