Fluoroscopic apparatus

Details Fluoroscopic apparatus Fluoroscopic apparatus

1995-06-22

1997-12-30

Lateef, Marvin M.

Surgery

Truss

Pad

600109, 600160, 348 49, 348 68, 128664, A61B 100

Patent

active

057019037

ABSTRACT:
A fluoroscopic apparatus in which an object image formed by an objective optical system provided at a front end of an insertion portion of an endoscope is transmitted to an ocular optical system through a first bundle of image guiding optical fibers to view the object image includes an excitation light filter which permits light having a wavelength band for exciting fluorescence from an object to be viewed to pass therethrough. The excitation light filter is retractably inserted in an optical path of illuminating light with which the object is illuminated. A beam splitter is provided in the ocular optical system to split the object image transmitted to the ocular optical system into an image for normal observation and for an image for fluorescence observation. A second bundle of image guiding optical fibers is provided in an optical path of the image for fluorescence observation to transmit the image to an image intensifier. Another filter for fluorescence observation is provided in the optical path of the image to permit light having a wavelength band other than the wavelength band which can pass through the excitation light filter to pass therethrough.

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Japanese Unexamined Patent Publication No. 1-221137.
Japanese Unexamined Patent Publication No. 2-299634.
Japanese Unexamined Patent Publication No. 4-150845 (This is the English equivalent of U.S. Ser. No. 07/770,332-- now abandoned).

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