Endoscope provided with curved portion protecting mechanism

Details Endoscope provided with curved portion protecting mechanism Endoscope provided with curved portion protecting mechanism

1996-12-10

1998-03-31

Flanagan, Beverly M.

Surgery

Endoscope

Having flexible tube structure

600139, 600146, A61B 100

Patent

active

057332452

ABSTRACT:
An endoscope provided with a curved portion protecting mechanism which is capable of straightening the curved portion securely and protecting the insertion portion itself from damage. The endoscope is provided with an portion including a curved portion which is freely bent, the insertion portion being inserted into a body cavity through a mantle tube. A flexible tube is laid from the end portion to a predetermined position through the curved portion, and a hard straightening rod for straightening the curved portion is withdrawably disposed in the flexible tube. A rack-and-pinion mechanism is connected to the straightening rod, which is advanced and withdrawn by a rotary operating means of an endoscope operating portion. In this manner, when the straightening rod is inserted into the flexible tube by the rotary operating means, the curved portion is straightened securely.

REFERENCES:
patent: 3854473 (1974-12-01), Matsuo
patent: 4374525 (1983-02-01), Baba
patent: 4807593 (1989-02-01), Ito
patent: 4928669 (1990-05-01), Sullivan
patent: 4971033 (1990-11-01), Ehlers
patent: 5025778 (1991-06-01), Silverstein et al.
patent: 5168864 (1992-12-01), Shockey
patent: 5179935 (1993-01-01), Miyagi
patent: 5197457 (1993-03-01), Adair
patent: 5251611 (1993-10-01), Zehel et al.
patent: 5531687 (1996-07-01), Snoke et al.

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