Flexible sheathing tube construction

Details Flexible sheathing tube construction Flexible sheathing tube construction

1996-04-24

1998-05-05

Flanagan, Beverly M.

Surgery

Endoscope

Having flexible tube structure

600140, 600144, A61B 100

Patent

active

057466963

ABSTRACT:
A flexible sheathing tube particularly suitable for use on an endoscopic insertion rod or flexible light guide cable, the sheathing tube having a laminated wall basically including a helical coil as a flexible base structure and a tubular metal wire netting placed around the helical coil member. The helical coil member has a certain number of helices thereof tightly closed and fixed to each other into the form of a rigid ring at least at one end of the sheathing tube to be trimmed in a subsequent stage. The end ring provides a rigid support uniformly on and around the inner periphery of the tubular netting, permitting a cutter blade to cut the end of the sheathing tube to a predetermined length by a straight clear cut through the laminated wall and the backing end ring. Accordingly, flexible component parts which are received in the sheathing tube are free from damages as caused by metal wires of the tubular netting which would otherwise be unraveled and deformed to protrude inward of the sheathing tube at the time of an end trimming operation.

REFERENCES:
patent: 3131726 (1964-05-01), Van Sciver, II et al.
patent: 3739770 (1973-06-01), Mori
patent: 4327711 (1982-05-01), Takagi
patent: 5137013 (1992-08-01), Chiba et al.

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