Flexible tube of endoscope

Details Flexible tube of endoscope Flexible tube of endoscope

1989-03-24

1990-07-31

Grieb, William H.

Surgery

Truss

Perineal

420401, 420494, A61B 100

Patent

active

049442872

ABSTRACT:
An elongated flexible tube that constitutes an insert part of an endoscope. The flexible tube comprises: a spiral tube made of a precipitation hardening metal and having a groove which is recessed inwardly from the outer surface of the tube, the groove extending in a straight line along the axis of the tube, the spiral tube being subjected to age hardening process after a solid solution treatment; a braided-wire tube formed by weaving fine metal wires into a braid, the braided-wire tube being closely fitted over the outer surface of the spiral tube; and a flexible skin closely and watertightly fitted over the outer surface of the braided-wire tube.

REFERENCES:
patent: 4646722 (1987-03-01), Silverstein et al.
patent: 4869238 (1989-09-01), Opie

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