| 摘要 |
<p>There's provided a flip-top cannula assembly (10) including a cannula (12) having a cannula seal (42) for receiving a range of surgical instruments having a first predetermined diameter and a reducer cap (14) movably mounted on the cannula (12). The reducer cap (14) includes a reducer seal (18) having an opening (20) which is substantially smaller than that of a cannula seal (42) associated with the cannula for receiving a range of surgical instruments having a diameter smaller than that of the first predetermined diameter. In the disclosed embodiments, the reducer seal (18) is movable from a closed position wherein the reducer seal (18) overlies the cannula seal (42) to effectively reduce the seal opening of the cannula (12) to a closed position wherein the reducer seal (18) is spaced apart from the cannula seal (42).</p> |
