Medical or dental laser instrument, in particular

专利名称：Medical or dental laser instrument, in

particular for treating dental root canals

发明人：HACK, ALEXANDER,SCHMITT, URSULA申请号：EP97114874.7申请日：19970827公开号：EP0827719B1公开日：20020605

摘要：The instrument has a rod-shaped handpiece (2) with a connecting unit (3) for asupply line (4). A first light guide (5) extends lengthwise along the supply line and theconnecting unit up to the handpiece. A second light guide (7) is arranged in the front endof the laser instrument. Its rear end is coaxial to the front end of the first light guide. Anin-coupling device (8) couples the laser light bundle of the first light guide into thesecond light guide. The second light guide has a larger numerical aperture, than the firstlight guide. The cross-sectional area of the second light guide is smaller than the cross-sectional area size of the first light guide. The numerical aperture of the second lightguide (7) is larger than 0.2, is preferably about 0.26 to 0.35. The numerical aperture of thefirst light guide is smaller than 0.2, preferably about 0.13 to 0.18. The second light guideis ductile and is arranged in a supporting tube (26), protruding from the laser instrument.The supporting tube is metal, of plastic ductile property. The second light guide isrotatably mounted with a retaining shank (23).

申请人：KALTENBACH & VOIGT GMBH & CO.,KALTENBACH & VOIGT,KALTENBACH &VOIGT GMBH & CO.

地址：DE

国籍：DE

代理机构：Schmidt-Evers, Jürgen, Dipl.-Ing.

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