Endoscopic instrument

Details Endoscopic instrument Endoscopic instrument

1994-05-31

1996-04-23

Apley, Richard J.

Surgery

Endoscope

Having auxiliary channel

600153, 600157, 600135, 600129, A61B 100

Patent

active

055098924

ABSTRACT:
An endoscopic instrument, particularly a continuous flushing cysto-urethroscope, has an oval cross-sectioned outer shaft and an inner shaft having a contour formed by two semi-circular arcs with different diameters, the arcs having their openings facing each other and connected by two approximately straight sides. The inner shaft is so dimensioned that it contacts the inside of the outer shaft at three points in a linear manner along essentially the entire shaft length, thus forming three free spaces between the inner shaft and the outer shaft for conveying rinsing or flushing fluids. The free spaces may be closed off at their distal ends with flanges projecting from the outer surface of the inner shaft. Passageways formed within the inner shaft between its walls and examination optics and a treatment instrument, which may be inserted in the inner shaft, serve as additional channels for conveying the fluids, while circumferentially and axially spaced groups of apertures near the distal end region of the outer shaft allow passage of fluids between the treatment site and the free spaces which convey the fluids.

REFERENCES:
patent: 3835842 (1974-09-01), Iglesias
patent: 3850162 (1974-11-01), Iglesias
patent: 3850175 (1974-11-01), Iglesias
patent: 4630598 (1986-12-01), Bonnet
patent: 4920961 (1990-05-01), Grossi et al.
Richard Wolf GmbH, Continuous Irrigation Resectoscopes With 25.degree. or 5.degree. Telescopes, Nov. 1989, p. D28.
Richard Wolf GmbH, Continuous Irrigation Resectoscope With Telescope 25.degree., Active, Nov. 1989, p. D31.
Richard Wolf GmbH, Instruments For Urology, Autumn 1979.

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