摘要 |
A port sealing device (4), comprising: (a) a sealing material (16) that can be placed in a port (3); (b) a first stop (10) that can limit movement of the sealing material (16) along the port (3); (c) a second stop fixed with respect to the port (3); and (d) a biaising member (15) that can bias the sealing material (16) towards the first stop (10) by reaction against the second stop. |