Endoscopic Cardiac Surgery

摘要

Apparatus and surgical methods establish temporary suction attachment to a target site on the surface of a bodily organ for enhancing accurate placement of a surgical instrument maintained in alignment with the suction attachment. A suction port on the distal end of a supporting cannula provides suction attachment to facilitate accurate positioning of a needle for injection penetration of tissue at the target site on the moving surface of a beating heart. Force applied via the suction attachment to the surface of the heart promotes perpendicular orientation of the surface of the myocardium for enhanced accuracy of placement of a surgical instrument thereon. A hollow needle and a supporting channel therefor, each include a slot along an outer wall between ends thereof, are selectably rotatable to align the slots for releasing a cardiac lead from within the needle through the aligned slots.