| 摘要 |
A surgical screw featuring a spontaneous loosening preventive blocking system comprises a threaded stem (1) provided with a head (2); at least one inclined hole (3) going through said head (2) coming out on one side of said threaded stem (1); and a stainless metal thread or nail (9) for surgical use inserted in said inclined hole (3) and getting into insertion and engagement relationship with a fractured bone (8) to be compounded. |
