Extended dwell voice prosthesis
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United States of America Patent
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-
Jan 2, 1996
Grant Date -
N/A
app pub date -
Jul 27, 1994
filing date -
Jul 27, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The position of the rear esophageal flange of a voice prosthesis disposed in a tracheoesophageal fistula is determined by forming a distinctive radiopaque pattern on the flange, preferably by insert molding a radiopaque ring along the perimeter of the flange and radiographically imaging the flange to determine the pattern of the ring. Pattern recognition of the ring is improved by forming the concentric flapper valve of radiopaque material.
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