| 摘要 |
<p>An irrigation/aspiration cannula (1) for use in cataract extraction having at its working tip (2) an unsheathed rotary cutting bit (3) which is disposed for irrigation fluid flowing from the irrigation port (4) to the aspiration port (5) to pass over and around the cutting bit (3) and is coupled to a rotary drive shaft (9) located outside the aspiration tube (7).</p> |
