Surgery – Truss – Perineal
Patent
1978-07-21
1980-12-30
Michell, Robert W.
Surgery
Truss
Perineal
356241, A61B 100
Patent
active
042417295
ABSTRACT:
The present invention discloses herewith an endoscope by which pressurized air is led into an inner portion of the endoscope. A plug of a light-transmitting optic bundle tube which communicates with the inner portion is covered, partially or totally, by a gas-tight cap which has a pressure inlet. The pressurized air is led from the pressure inlet into the inner portion of the endoscope through a terminal part or a gap of the plug.
By these provisions, an internal pressure of the endoscope is raised to an extent not smaller than the external pressure of a cleanser in order to prevent the cleanser from flowing into the inner portion of the endoscope when washing and/or sterilizing a non-waterproof endoscope. In addition, a pinhole on a flexible sheath can easily be detected by testing a leakage of the pressurized air as for a waterproof endoscope.
REFERENCES:
patent: 1335073 (1920-03-01), Osborn
patent: 2761311 (1956-09-01), Baker
patent: 3023607 (1962-03-01), Bolch et al.
patent: 3425419 (1969-02-01), Dato
patent: 3690769 (1972-09-01), Mori
patent: 3866599 (1975-02-01), Johnson
patent: 3956011 (1976-05-01), Carleton
patent: 3963438 (1976-06-01), Banez
patent: 3995934 (1976-12-01), Nath
patent: 4066070 (1978-01-01), Utsugi
Berger Peter L.
Machida Endoscope Co., Ltd.
Michell Robert W.
Tayon Jeffrey W.
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