Flexible tubular channel with external supporting ridges

Details Flexible tubular channel with external supporting ridges Flexible tubular channel with external supporting ridges

1990-04-11

1992-06-30

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604282, 138121, 138122, A61M 2500

Patent

active

051259095

ABSTRACT:
A tubular channel usable in endoscopy for flexible auxiliary instruments such as forceps, electrodes and the like to be passed through, in which structuring of the outer wall face by means of a plurality of radial grooves is employed to obtain high flexibility on the one hand and on the other hand a cross-sectional strength which improves its resistance to collapse when suction is applied and also to internal pressure.

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patent: 4877354 (1989-10-01), Williamson
patent: 4900314 (1990-02-01), Quackenbush
patent: 4950232 (1990-08-01), Ruzicka et al.
patent: 4964440 (1990-10-01), Andre et al.
patent: 4982765 (1991-01-01), Usui

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