| 摘要 |
An expandable device including: a first member; a second member; at least one tension member attached to the first and second members and extending between the first and second members, the first and second members movable between an open position, in which at least a part of the first member is spaced from the second member, and a closed position, in which said at least a part of the first member is adjacent the second member; and at least one spacer sized to be located between the first and second members when in the open position, and to maintain the first and second members in the open position, wherein, in the open position, the at least one tension member is held taut between the first and second members. |
