Extractor for free body in articular cavity

The utility model relates to an extractor for a free body in an articular cavity, and discloses the extractor for the free body, which is characterized in that a spring pull rope drives a free body extraction spring to extend to enlarge a gap, after the free body enters the free body extraction spring, a pull rope holding column is loosened to return to the original position, and the free body is locked in a free body accommodating and communicating pipe. The dissociated body is prevented from slipping and being difficult to take out. The device is characterized in that the device is composed of a pull rope holding column, a free body containing and communicating pipe, a free body taking-out spring, a spring supporting plate, connecting supporting rods and a spring pull rope, a set of connecting supporting rods are arranged on the spring supporting plate, one end of each connecting supporting rod is connected with the spring supporting plate, and the other end of each connecting supporting rod is connected wi