| 摘要 |
The present invention provides a speculum comprising a body (100), an opening (20), a first blade (2) pivotably secured to the body and a second blade (3) that is integral with the body. The blades are located at opposed sides of the opening. The first blade is pivotally secured with respect to the body by means of pivot pins. The first blade is movable between a first retracted position in which it lies adjacent to the second blade and a second extended position in which it is spaced apart from the second blade. A mechanism (5, 41) is also provided that is configured to move the first blade (2) from the first position to the second position. When the first blade is in the extended position, there is an inspection channel (20) formed that extends through the opening and between the blades. The mechanism for moving the first blade is preferably located substantially outside the periphery of the opening when the first blade is in the extended position. For example, it could be a ring (5) having a cam surface (41) that is movable along a path that lies around or outside the opening. |
