Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1989-08-09
1991-04-23
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604167, 606185, A61M 5178
Patent
active
050096435
ABSTRACT:
A trocar sleeve characterized by an annular flange adjacent a proximal end, a disc-shaped annular stop spaced from the annular flange in a distal direction and helically extending thread extending from said annular disc-shaped stop toward the distal end to prevent the removal of the sleeve from a puncture. The sleeve is used in conjunction with the trocar, which is provided with a disc-shaped annular stop between its ends, which engages the proximal end of the sleeve as the trocar is inserted therethrough and with cutting edges of the trocar being exposed to the distal end of the sleeve. The sleeve and trocar form a device which is used to form a puncture in the wall of a patient and then, after the distal end of the sleeve has been inserted in the puncture, the sleeve is rotated to thread the sleeve into the puncture to a position to prevent its removal. The sleeve is particular useful for the insertion of various instruments, such as endoscopes, to perform internal surgery and is, preferably, provided with an insulating inner sleeve layer.
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"Trocar for Double Puncture", Karl Storz Sales Brochure, Page GYN 25, date unknown.
"Keene Self-Sealing Sleeve and Obturator", R. Wolf, p. AR20 Date unknown.
Koch Peter
Reich Harry
Cermak Adam J.
Richard Wolf Medical Instruments Corp.
Yasko John D.
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