Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1992-12-22
1994-05-24
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604274, 606167, 606170, A61M 518
Patent
active
053144171
ABSTRACT:
A safety trocar is provided which includes a spring-loaded shield that shields the cutting tip of the obturator after the obturator penetrates tissue. The distal end of the shield is conical in profile and contains a slot which conforms to the geometry of the cutting tip. The obturator tip contains a knife edge blade which extends the length of the cannula inner diameter. Ideally, the knife is made of an amorphous metal, and may be serrated at its edge.
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Bishop Gregory D.
Collins John M.
Selecman George
Smith Richard
Stephens Randy R.
Coletti Paul A.
Dawson Glenn
Ethicon Inc.
Pellegrino Stephen C.
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