Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-05-10
1997-03-04
Rimell, Sam
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604157, 604158, A61M 5178
Patent
active
056073968
ABSTRACT:
A 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 reaction of the penetrating member.
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