Tubular shaft instrument

Details Tubular shaft instrument Tubular shaft instrument

1998-11-25

2000-06-20

McDermott, Corrine

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604256, 137522, 251 83, 2511492, A61M 5178

Patent

active

060772492

ABSTRACT:
A tubular shaft instrument, in particular a trocar, has an instrument channel which can be closed off by a flap valve. An actuation element serves to open the flap valve against the force of a closing spring. It is proposed that the actuation element be configured as an element which at least partly surrounds the instrument channel and can rotate about the instrument channel axis, and which is equipped with a circumferential cam bevel, rising in the direction of the instrument channel axis, on which a control section of the flap valve rests, so that a rotation of the rotatable element effects opening or closing of the flap valve.

REFERENCES:
patent: 5397314 (1995-03-01), Farley et al.
patent: 5399167 (1995-03-01), Deniega
patent: 5591192 (1997-01-01), Privitera et al.

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