Surgery – Truss – Pad
Patent
1984-09-13
1986-11-18
Hirsch, Paul J.
Surgery
Truss
Pad
128 9, A61B 1736
Patent
active
046229671
ABSTRACT:
An auricular instrument (10) for the therapy of otitis media has a Q-switched laser (26) whose "giant pulse" output is especially suitable for forming a clean, round hole in a patient's tympanic membrane for draining the afflicted middle ear. The Q-switched laser (26) uses a neodymium YAG (yttrium-aluminum-garnet) lasing medium and its output is non-visible to the human eye. A gas laser (32) using a helium-neon lasing medium provides a low power, continuous beam of visible light upon which the output of the Q-switched laser (26) is made to ride by suitable optics. Both radiations emerge from the ear probe of a conically-tapering ear probe/cylindrical eyepiece (12) combination similar to that comonly found in otoscopes. With the probe being inserted in the patient's outer ear and with the eyepiece being looked through by a physician controlling the Q-switched laser (26), the physician will see a localized membrane area illuminated by the gas laser (32) and, as he controls the shots fired by the Q-switched laser (26), he will observe the progressive formation of the hole centrally of the localized area.
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Hirsch Paul J.
Howison Gregory M.
Mills Jerry W.
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