| 摘要 |
A template and a blade plate for determining an optimum angle (15) formed by a blade portion and a plate portion prior to insertion, and enabling insertion into a predetermined, precise position without causing deviation in the direction of entry and revolving. A template (17) is provided centrally thereof with a bent portion (18), and on both ends of an upper plate portion (19) with a guide pipe (20), and a blade plate (24) is provided on both ends of a blade portion (25) with a guide pipe (26). The template (17) of the invention can determine an optimum angle (15) formed by the blade portion and the plate portion, which results in significant buttress effects. The blade plate (24) of the invention can provide precise insertion since the guide pipe (26) has a certain length and the advancing direction of the blade plate does not deviate from guide wires. Further, the use of two guide wires (21) prevents the blade plate from revolving.
|
