Device for the photodynamic endoscopic diagnosis of tumor tissue

Details Device for the photodynamic endoscopic diagnosis of tumor tissue Device for the photodynamic endoscopic diagnosis of tumor tissue

1997-08-14

1999-10-26

Leubecker, John P.

Surgery

Endoscope

Having imaging and illumination means

600181, 600476, A61B 106

Patent

active

059719184

ABSTRACT:
The invention relates to a device for the photodynamic endoscopic diagnosis of human or animal tumor tissue with the help of a marker substance capable of fluorescence and with an endoscope and a light source. With this, means are provided in order to guide light from the light source via an endoscope to the diagnosis location in each case in one of at least two selectable spectral regions, that is in a white light region and in a region with blue-violet light, in order thus in each case to be able to carry out a visual examination with white light and stimulate a marker substance deposited in any tumor tissue to fluoresce. The means for selecting the light comprises an anti-fading filter which can be pivoted into the beam path of the white stimulation light on examination with white light and which filters out light, lying in spectral region stimulating fluorescence, from the white light. This anti-fading filter, together with other color filters may be mounted on a pivoting wing which can be selectively pivoted by the examining surgeon into the light path between the light source and the light guide cable, the pivoting wing being movable by way of a pivoting device.

REFERENCES:
patent: 4807026 (1989-02-01), Nishioka et al.
patent: 5255087 (1993-10-01), Nakamura et al.
patent: 5684908 (1997-11-01), Kross et al.

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