Laryngoscope Patent #: 4273112
ApplicationNo. 06/611404 filed on 05/17/1984
US Classes:600/193, Detachable or foldable600/199Illuminating
ExaminersPrimary: Grieb, William H.
Attorney, Agent or Firm
International ClassA61B 1/267 (20060101)
Foreign Application Priority Data1983-05-17 DE
AbstractA medical instrument, specifically a laryngoscope, has a hollow handle containing a primary or secondary electric battery and a lamp, the latter having a light bulb disposed at the upper end of a detachable head of the handle toward which it is urged by a spring bearing upon the battery from below. The lamp is held in a metallic sleeve surrounded by a dielectric sheath which is snap-fitted into the detachable head; the sheath and the sleeve are axially repressible against the spring force. A speculum is pivoted to that head and is swingable between an idle position alongside the handle and a working position perpendicular thereto. In its working position, a camming projection on the speculum represses the assembly of battery, sheath, sleeve and lamp and closes an energizing circuit for the light bulb through the handle head. The speculum has a channel which terminates short of its tip and accommodates a fiber-optical light guide whose rear end is illuminated by the light bulb in the working position. The channel is bounded by two sheet-metal profiles joined together by arc welding and/or soldering.