Automatic retractable safety penetrating instrument for portal sleeve introduction
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United States of America Patent
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-
Sep 22, 1998
Issued Date -
N/A
app pub date -
Mar 8, 1996
filing date -
Nov 27, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic retractable safety penetrating instrument for introducing a portal sleeve into a cavity in the body includes a portal sleeve and a penetrating member disposed within the portal sleeve and supported in a manner to automatically move proximally from an extended position wherein a sharp distal end of the penetrating member protrudes from the portal sleeve to a retracted position wherein the sharp distal end of the penetrating member is protected in response to distal movement of the retractable safety penetrating instrument upon penetration into a cavity in the body. A retracting mechanism moves the penetrating member proximally and is normally locked in a position preventing proximal movement of the penetrating member and is released by distal movement of an operating member to trigger retraction of the penetrating member.
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