Trocar assembly
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United States of America Patent
Stats
-
Oct 15, 1991
Grant Date -
N/A
app pub date -
Nov 4, 1988
filing date -
Nov 4, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An obturator is disclosed as being of a throwaway, single use, structure, preferably fully formed of thermoplastic, polymeric material and with a piercing and cutting end defined by non-planar faces having depressions formed therein to present cutting edges. The depressions are shaped by compound curves including a partial spherical surface, and angularly related, generally flat surfaces which define the cutting edges. The surfaces are of a shape and orientation as to provide spatial relief to the edges of the walls of a body to which the obturator is applied, thereby preventing stretching and tearing of the wall.
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Cited Art Landscape
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