`
`PCT/KR2018/016796
`
`ABSTRACT
`
`The present invention relates to an implant surgery drill capable of preventing accidents
`
`in advancebyactively reinforcing coupling force between a cutting part for cutting the alveolar
`
`boneand a connecting part for connecting the cutting part to a handpiece and, morespecifically,
`
`including: a cutting part (10) having a plurality of cutting blades that comprise saw teeth and
`
`are aligned in a circular shape so as to perforate the alveolar bone; and a connecting part (20)
`
`interposed between the handpiece and the cutting part, wherein, specifically, the cutting part
`
`(10) including: the saw teeth (11) aligned in a circular shape at the upper endthereof; a cutting
`
`upper part (12) extending downward from the saw teeth; a cutting lower part (13) protruding
`
`10
`
`downward from the cutting upper part with an expanded diameter; and a coupling hole (14)
`
`recessed from the bottom surface of the cutting lower part so as to guide the insertion of the
`
`connecting part, the connecting part (20) including: a coupling protrusion (21) inserted and
`
`interposed in the coupling hole of the cutting part; a stepped part (22) protruding downward
`
`from the bottom of the coupling protrusion with an expanded diameter, and constraining the
`
`15
`
`insertion length of the coupling hole; and an extended part (23) extendedly protruding from
`
`the bottom surface of the stepped part so as to be connected to the handpiece, and the coupling
`
`protrusion (21) further has threads on the outer periphery thereof, and the coupling hole (14)
`
`further has threaded grooves corresponding to the threads of the coupling protrusion, so that
`
`the coupling protrusion and the coupling hole are fastened to each other by a bolt fastening
`
`20
`
`method.
`
`17
`
`

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