Trocar with universal seal protector

Details Trocar with universal seal protector Trocar with universal seal protector

1994-06-29

1995-12-19

Graysay, Tamara L.

Surgery

Instruments

Cutting, puncturing or piercing

604167, 604264, 2511491, A61B 1700, A61M 500, F16K 5100

Patent

active

054764750

ABSTRACT:
A trocar is adapted to provide a working channel across a body wall to accommodate a surgical instrument having a sharp or puncture prone configuration. The trocar includes a cannula and a housing which encloses at least one septum seal. A valve adjuster is movable by the instrument from a first position and a relaxed state, to a second position and an expanded state wherein the valve protector is disposed at least partially between the instrument and the valve. In this second position axial friction is reduced and the valve is protected from the sharp or puncture prone configuration of the instrument. A method includes the steps of engaging the valve adjuster with the instrument and moving the adjuster from the first position to the second position.

REFERENCES:
patent: 1800045 (1931-04-01), Bates
patent: 3620500 (1971-11-01), Santomieri
patent: 4387879 (1983-06-01), Tauschinski
patent: 5176652 (1993-01-01), Littrell
patent: 5180373 (1993-01-01), Green et al.

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