Trocar and seal arrangement
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United States of America Patent
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-
Oct 11, 1994
Grant Date -
N/A
app pub date -
Feb 19, 1993
filing date -
Feb 19, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trocar (2) includes a hollow body (4) defining a path between its proximal and distal ends with an obturator assembly (6) positioned along the path. The tip (34, 36) of the obturator assembly has a cutting element (38). A novel gas sealing assembly (114) seals the path along the trocar body and includes a pair of elastomeric, disc-like slit barriers (122, 124) having opposed, convex surfaces (128) and a flexible, elastic, conical element (136) with a hole (158) at its tip. The conical element and the proximal barrier (122) have raised ridges or rings (144, 164) along their inner surfaces (142, 154).
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