Drainage tube for sinus maxillaris, a means for its insertion and a means for making a hole for its positioning
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United States of America Patent
Stats
-
Aug 18, 1992
Grant Date -
N/A
app pub date -
Feb 16, 1990
filing date -
Aug 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drainage tube (1) for drainage of sinus maxillaris consists of a middle portion (1b) having an exterior dimension adapted to a hole made in the bone wall between nasal cavity and sinus maxillaris, an extendible end portion preferably outwardly foldable legs (6) and an opposite end portion (2) widened compared with the middle portion (1b), preferably a collar. For making the hole in the bone wall is developed a tube-formed drill, which in its free end edge is formed with a toothed cutter, and for the insertion of the drainage tube in position between nasal cavity and sinus maxillaris is developed a particular insertion instrument.
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