| CPC A61C 8/0089 (2013.01) [A61B 17/1615 (2013.01)] | 9 Claims |
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1. An implantation kit enabling implant hole preparation on bone in only one drilling with one single osteotome, comprising:
a rotational osteotome including a shank section, a stopper section, and a drill section sequentially arranged in a drilling direction of the rotational osteotome,
the shank section being configured to connect to a rotary tool,
the drill section including a plurality of axially spaced steps of different diametrical sizes, a tip, and at least one flute,
the steps being arranged between the stopper section and the tip and giving the drill section a stepped profile that is downward tapered in the drilling direction, and the steps respectively including an annular bottom bevel extended downward to a top of an adjacent lower one of the steps, such that the annular bottom bevels respectively have a cutting edge and a recessed section, and the cutting edge has a height different from the recessed section, and
the tip having an apex point formed at one side of the tip opposite to the stopper section, and
the flute being extended from the steps to the tip in the drilling direction; and
an implant including a body, an external thread, and a plurality of spiral flutes,
the body including a cylindrical head section and a conical section downward extended from the cylindrical head section,
the cylindrical head section including a socket formed on a top of the cylindrical head section and having a straight cylindrical profile that matches one of the steps having the largest diameter,
the conical section having a bottom formed into a spherical surface and a downward tapered profile correspondingly aligned with all the recessed sections of the steps,
the external thread being formed around a round conical outer surface of the conical section and a round outer surface of the cylindrical head section and including a plurality of blade edge sections and a plurality of blade body sections, such that, when the implant is superimposed on the rotational osteotome, the blade edge sections are located outside the stepped profile of the steps, and the blade body sections are partially located in the stepped profile while remaining parts of the blade body sections being located outside the stepped profile of the steps, and
the spiral flutes being formed on the external thread to downward extend to the spherical surface and having a depth starting from a pitch circle of the external thread down into a partial thickness of the conical section gradually.
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