| 摘要 |
<p>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 (41) maintained in alignment with the suction attachment. A suction port (19) on the distal end of a supporting cannula (10) provides suction attachment to facilitate accurate positioning of a needle (21) for injection penetration of tissue at the target site or for anchoring a cardiac electrode (97) on the moving surface of a beating heart. Force applied via the suction attachment to the surface of the heart selectively distorts the myocardium for angularly orienting and accurately positioning a surgical instrument (41) or cardiac electrode (97) thereon.</p> |
