Endoscope with tapered shaft

Details Endoscope with tapered shaft Endoscope with tapered shaft

1989-02-06

1990-10-09

Grieb, William H.

Surgery

Truss

Perineal

A61B 130

Patent

active

049614142

ABSTRACT:
A fiber optic endoscope has a shaft with a varying outer diameter. The distal end of the shaft is sufficiently small in outer diameter for maneuvering it through various body canals, while the overall length of the shaft is rigid enough to allow axial and rotational translation of the shaft when controlled manually from a handle at the proximal end. The endoscope shaft may be n stages of different outer diameter or it may be uniformly tapered along its entire length. Either a step-tapered or a uniformly tapered version may include a flexible tip portion at the distal end of the shaft which is controllable from the endoscope handle.

REFERENCES:
patent: 1995196 (1935-03-01), Wolf
patent: 3788304 (1974-01-01), Takahashi
patent: 4146019 (1979-03-01), Bass et al.
patent: 4483326 (1984-11-01), Yamaka et al.
patent: 4589404 (1984-01-01), Barath
patent: 4589404 (1986-05-01), Barath et al.
patent: 4685449 (1987-08-01), Bonnet
patent: 4690175 (1987-09-01), Ouchi et al.
patent: 4802461 (1989-02-01), Cho
Richard Wolf Medical Instruments Catalog, III 87, pp. D31, D33, 1987.
W. B. Allan, "Fiber Optics Theory and Pratice", Optical Physics and Engineering, Series Editor William L. Wolfe, Plenus Press, 1973, pp. 148-176.
Denise Grady, "The Artery Zapper", Discover, Dec. 1982, pp. 36-40.
Yoshikatsu Tanahashi, M.D., "Transurethral Disintegration of Urinary Calculi by the Use of Laser Beam", Urology, vol. 10 pp. 30-33. 1981.

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