Speculum with smoke evacuation channel

Details Speculum with smoke evacuation channel Speculum with smoke evacuation channel

1994-09-16

1996-03-19

Apley, Richard J.

Surgery

Specula

Retractor

600223, 600205, A61B 106, A61B 1303, A61B 132

Patent

active

054999642

ABSTRACT:
An improved vaginal speculum includes a lower blade member having a straight segment, a curved portion, and a hollow leg portion. The speculum also includes a slide member, an upper blade member rotatably and slidably movable relative to lower blade member, and a light pipe extending from the hollow leg toward the straight segment of the lower blade. The light pipe is adapted to direct light from a light source positionable within the leg, into a region under examination. The upper blade is provided with a smoke evacuation passage formed by a U-shaped channel member positioned adjacent a contoured interior surface of the upper blade member. The U-shaped channel member is provided with a forward end, a rearward end, a bottom surface, and a pair of opposed side walls each having a top edge shaped to fit snugly against the contours of the interior surface or retaining walls formed thereon. The U-shaped channel member quickly snap fits into the upper blade which has a conventional configuration that is easily formed by injection molding.

REFERENCES:
patent: 2672859 (1954-03-01), Jones
patent: 3716047 (1973-02-01), Moore et al.
patent: 3889661 (1975-06-01), Fiore
patent: 4884559 (1989-12-01), Collins
patent: 4971036 (1990-11-01), Collins
patent: 5026368 (1991-06-01), Adair
patent: 5063908 (1991-11-01), Collins
patent: 5143054 (1992-09-01), Adair
patent: 5154166 (1992-10-01), Chikama
patent: 5329935 (1994-07-01), Takahashi

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