Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-02-28
1996-11-12
Manahan, Todd E.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604169, A61M 500
Patent
active
055735118
ABSTRACT:
A safety penetrating instrument for establishing a portal in the wall of an anatomical cavity includes a housing, a portal sleeve, a penetrating member disposed within the portal sleeve and movable relative thereto between an extended position where a distal end of the penetrating member protrudes from a distal end of the portal sleeve and a retracted position proximally spaced from the extended position, a distally-biased safety probe disposed within the penetrating member and movable relative thereto between an extended safety probe rest position protecting the penetrating member distal end when the penetrating member is retracted and a safety probe retracted position exposing the penetrating member distal end when the penetrating member is extended, a retracting mechanism for moving the penetrating member from its extended position to its retracted position, a handle or knob for manually moving the penetrating member from the its retracted position to its extended position, a locking mechanism for locking the penetrating member in its extended position, and a releasing mechanism responsive to penetration of the safety penetrating instrument into the anatomical cavity for triggering release of the locking mechanism to permit the retracting mechanism to move the penetrating member proximally to its retracted position.
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