Everting tube device with relative advance control

Details Everting tube device with relative advance control Everting tube device with relative advance control

1980-12-16

1982-03-30

Yasko, John D.

Surgery

Truss

Perineal

128658, 128349R, A61B 100

Patent

active

043219152

ABSTRACT:
An everting tube device for introducing an elongated tool into a body cavity through a body opening for diagnostic or other purposes comprises an elongated housing containing a folded evertable flexible tube through which an elongated tool, such as a fiber optic bundle, sealingly extends. The flexible tube can be everted from the housing by applying fluid pressure to the housing interior, and the eversion of the tube carries the tool along with it at twice the rate. The tool can be retracted by applying vacuum to the housing interior which draws the tube away from the tool. The alternate use of pressure and vacuum, along with the intermediate steps of manually retracting the tool, result in projecting the tool and tube into the appropriate cavity at substantially the same rate. When the tool used is a fiber optic bundle, it provides a means of continuously viewing the path of travel immediately ahead of the advancing tube.

REFERENCES:
patent: 3168092 (1965-02-01), Silverman
patent: 3332424 (1967-07-01), Minteer
patent: 3433214 (1969-03-01), Silverman
patent: 3525329 (1970-08-01), Zeimer et al.
patent: 3866601 (1975-02-01), Russell
patent: 3908635 (1975-09-01), Viek
patent: 3908663 (1975-09-01), Viek
patent: 3911927 (1975-10-01), Rich et al.
patent: 4040413 (1977-08-01), Oshiro
patent: 4077610 (1978-03-01), Masuda
patent: 4148307 (1979-04-01), Utsugi
Zeimer et al., "Toposcopy-Frictionless Method of Entering Body Cavities", N.Y. State, J. of Med. (Jul. 15, 1965).

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