Endoscope

Details Endoscope Endoscope

1975-01-30

1977-05-24

Michell, Robert W.

Surgery

Truss

Perineal

A61B 126

Patent

active

040248585

ABSTRACT:
A flat tubular structure, which comprises two tubes arranged side by side and enclosed within an outer tube, with each of the inner tubes having a structure capable of bending but incapable of transmitting a twisting effort through the whole length when a torque is applied at one end, behaves such that when it is twisted at its one end, while holding its intermediate portion, its other end is twisted by the same amount, with its intermediate portion remaining flat without being twisted.
Such a flat tubular structure is used as a flexible tube portion of an endoscope. When the intermediate portion of such a flexible tube portion is located within the gullet, by turning a grip portion outside the body the tip portion within the body is turned by the same amount, as the grip portion and the intermediate portion is prevented from turning since it bears against the gullet. With this construction, it is possible to observe the inside of the body at various angles without squeezing the windpipe, that is, with less pain to the patient. Also, an endoscope having a flexible tube portion of an increased sectional area can be produced.

REFERENCES:
patent: 2243992 (1941-06-01), Wappler
patent: 3739770 (1973-06-01), Mori
patent: 3788304 (1974-01-01), Takahashi

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