Light sensor for photo-dynamic therapy having a transparent hous

Details Light sensor for photo-dynamic therapy having a transparent hous Light sensor for photo-dynamic therapy having a transparent hous

1993-02-24

1994-03-29

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Housings

2502141, 257433, H01J 502

Patent

active

052987426

ABSTRACT:
A light sensor constructed from a commercial photodiode packaged in a transparent housing of sufficient thickness to set the photodetector away from the underlying surface, thereby reducing the shadowing effects of the photodetector and allowing incident light to pass through the housing to the tissue below. Electrical connections are made directly on the photodiode which is sealed within the transparent housing, thus avoiding electrical shock or short circuit hazards. The transparent package is equipped with four hooks which are well suited for attachment to tissue structure, either directly or with the aid of sutures. In a second embodiment, the light sensor includes a second photodiode mounted within the sealed housing to measure light reflected from the underlying tissue. The light sensor is well suited for use with photodynamic therapy.

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