| 摘要 |
The speculum includes a main body (12) with two dilator fingers (14A) and (14B) that are connected at their respective proximal ends (16A and 16B) to the main body (12). A further dilator finger (28) extends between the fingers (14A) and (14B) and is fixed to the main body (12). An actuator (20) is pivotally coupled to the main body (12). The actuator (20) is provided with a dilator finger (70) that is located between the fingers (14A) and (14B) and opposite the fixed finger (28). When the actuator (20) is pivoted, the finger (70) pivots away from the remaining fingers (14A), (14B) and (28). After a predetermined degree of pivot, the actuator (20) comes into contact with the inside of fingers (14A) and (14B) near their proximal ends (16) to cause the distal ends of those fingers to move away from each other. Fingers (14A) and (14B) are hinged about respective canted hinge axes so that when they are abuted by the actuator (20) they move in a combined upward and sideways motion.
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