| 摘要 |
In accordance with the present invention an improved spring-loaded expandable acetabular reamer is described, which comprises a number of convex reaming segments symmetrically located by pair around a central core of the Reamer tool. It is also an object of the present invention to provide and improved spring-loaded reaming segment, which expand faster and requires less manipulation by the operating surgeon and staff minimizing therefore the risk of infection and damage to tissue. Furthermore, introducing large size conventional acetabular reamers with rough and sharp edges through small surgical incisions will undoubtedly cause damage to the incision edge and the surrounding soft tissues, which may ultimately result in delayed wound healing. It is therefore highly desirable to provide an improved acetabular cup, which has the capacity of expanding in diameter to replace several acetabular cups thereby reducing the number of instruments used as well as shortening the time of the procedure and reducing healing time and lessen the risk of infection.
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