Patent ID: 8282640
Filing Date: 2012-10-09
Classification: A61B

Abstract:
1. A sinolift ridge expansion osteotome for dental ridge expansion, comprising: an osteotome shaft having a first end and a second end; a trepanelevation tip member extending from said first end of said osteotome shaft, said trepanelevation tip member having a taper shape that gradually reduces a diameter to a tip end such that the diameter of said tip end is smaller than said first end of said osteotome shaft for enabling said tip end locating within an oral cavity, said trepanelevation tip member having a concave tip formed at said tip end thereof, said concave tip having a concave bottom and a concave wall extended to a periphery edge of said trepanelevation tip member to form a sharpen tip edge of said concave tip and define a cavity at said tip end of said trepanelevation tip member, said trepanelevation tip member further providing at least a prominence which is protruded from a central portion of said concave bottom and has a height at least equal to or less than a depth of said concave tip, wherein said concave bottom is extended between said prominence and said concave wall, wherein said concave bottom and said concave wall integrally form said cavity around said prominence; and a head providing at said second end of the osteotome shaft for being located out of the oral cavity, wherein said head receives an impact force and longitudinally transmits the impact force to said osteotome shaft toward said sharpen tip edge of said trepanelevation tip member, wherein said sharpen tip edge is higher than said prominence and forms a highest tip of said tip end, such that when said trepanelevation tip member is positioned on a surface of a bone within the oral cavity, said sharpen tip edge is able to be stick into the bone so as to secure the position of said trepanelevation tip member, wherein said concave bottom and said concave wall radially and outwardly extended to said periphery edge of said trepanelevation tip member to form said sharpen tip edge of said concave tip, said concave wall is extended from the concave bottom to form a smooth curvature.