Disposable value assembly for reusable surgical trocar

Details Disposable value assembly for reusable surgical trocar Disposable value assembly for reusable surgical trocar

1995-06-02

1999-02-16

McDermott, Corrine M.

Surgery

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

Treating material introduced into or removed from body...

604169, 604256, 137849, A61M 5178

Patent

active

058714715

ABSTRACT:
A surgical trocar assembly includes a disposable valve assembly, a cannula assembly, and a trocar with a handle. The cannula assembly includes a cannula base having a valve assembly coupling device at its proximal end, and a cannula extending from its distal end. The disposable valve assembly has a coupling device for removably coupling it with the cannula base. The valve assembly also includes a valve body with a fluid passage communicating with the hollow cannula when it is coupled to the cannula base. A slit or flapper valve and a universal washer are mounted within the valve body and allow the insertion of the trocar or other endoscopic instruments therethrough while providing a fluid sealing of the fluid passage. The valve assembly may be provided with a side port which optionally contains an automatic valve actuated by a luer coupling. Several different valve assembly-cannula base couplings are disclosed as well as several different types of trocars.

REFERENCES:
patent: 4430081 (1984-02-01), Timmermans
patent: 4946133 (1990-08-01), Johnson et al.
patent: 5423761 (1995-06-01), Hein et al.

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