The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2001
Filed:
Sep. 18, 1998
Klaus Irion, Emmingen-Liptingen, DE;
Reinhold Baumgartner, Freising, DE;
Herbert Stepp, Planegg, DE;
André Ehrhardt, Tuttlingen, DE;
Karlheinz Strobl, Fiskdale, MA (US);
Karl Storz GmbH & Co., KG, , DE;
Abstract
A device for “in vivo” diagnosis by means of a photosensibilisator light-induced reaction or a reaction caused by intrinsic fluorescence in biological tissue, having an illumination system, which is provided with at least one light source having a lamp system which generates incoherent light in a wavelength range of at least 380 to 680 nm, a light delivering unit which directs the light of said illumination system at the therapy and/or to-be-diagnosed tissue area, and an imaging, image-recording and image-transmitting unit which images the light coming from said tissue area in a proximal image plane. The device is distinguished in that the net spectral transmittance in the light delivering unit and in the image-generating unit of the device are selected in such a manner that, on the one hand, practically no light with a wavelength of &lgr; from the range utilized for excitation, which by nature has relatively high intensity, “reaches” via the image-generating unit of the device into the proximal image plane, whereas light with a wavelength of &lgr; from the range in which fluorescence occurs can reach the proximal image plane only if it comes from the illuminated tissue are and not from the illumination system.