Suction irrigator endoscope

Details Suction irrigator endoscope Suction irrigator endoscope

1992-01-28

1993-09-14

Yasko, John D.

Surgery

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

Material introduced into and removed from body through...

604249, A61M 500

Patent

active

052444597

ABSTRACT:
A surgical endoscope includes an elongated cannula having a distal end for insertion into the body of a patient, and a proximal end having a valve assembly mounted thereon to selectively and alternatively connect the cannula to a source of irrigation fluid, or to an aspirator. The valve assembly includes a pair of valve members adapted for manual operation one at a time to permit irrigation or suction fluid flow to a central flow chamber disposed at the proximal end of the cannula. The valve members are symmetrically mounted at opposite sides of the central flow chamber for movement between opened and closed positions without occluding the proximal end of the cannula. An instrument access port on the valve assembly at a position in-line with the cannula permits introduction of a surgical instrument through the central flow chamber and cannula, independently of the valve members and manipulation thereof.

REFERENCES:
patent: 1740174 (1929-12-01), Hevern
patent: 3081770 (1963-03-01), Hunter
patent: 3678959 (1972-07-01), Liposky
patent: 3791379 (1974-02-01), Storz
patent: 4680026 (1987-07-01), Weightman et al.
patent: 4769018 (1988-09-01), Wilson
patent: 4881523 (1989-11-01), Heckele
patent: 5125910 (1992-06-01), Freitas
patent: 5186714 (1993-02-01), Boudreault et al.
patent: 5188591 (1993-02-01), Dorsey, III

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