Patent ID: 7927100

Claim:
A disposable assembly for a dental instrument in which the dental instrument has a handpiece formed by a body enclosing a motor unit, the disposable assembly comprising: an insert having a tool-holder head bearing a tool at an end thereof, said tool-holder head having a protective sleeve compacted upon itself and suitable for extending over the handpiece, said protective sleeve having a closed base residing directly against said end of said tool-holder head and through which said tool passes; and a sealed packaging having an envelope of a generally tubular shape, said envelope having an opening at one end, said insert being received into said envelope through said one end, said envelope being bordered by a collar at said one end, said collar having a cover welded thereto so as to extend over the opening at said one end, said tool-holder head having an annular depression formed adjacent an end thereof, said tool-holder head having an annular bulge at said end thereof, said protective sleeve being rolled up or compacted so as to have a shape of a bead, said bead received over said annular depression and against said annular bulge.