Optics: measuring and testing – Photometers – Photoelectric
Reexamination Certificate
2006-05-31
2008-10-07
Pham, Hoa Q (Department: 2886)
Optics: measuring and testing
Photometers
Photoelectric
C356S246000, C422S022000
Reexamination Certificate
active
07433030
ABSTRACT:
Apparatus (10), systems and methods are disclosed for treating a biological fluid with light. A container (206) of biological fluid is introduced into a fluid treatment chamber (40) where it is contacted with light provided by one or more light sources (60, 70) in proximity to the fluid treatment chamber (40). A light sensing system (650) senses the intensity of illumination of the light. A radiometer (460) may be inserted into fluid treatment chamber (40) to calibrate the light sensing system (650). An electronic control system (600) utilizes an interface circuit board (606) to interface a computer circuit board (602) to a display panel (37), a user interface panel (39, 39a), a relay circuit board (640), light sensors404and various other sensors (649). A detector (385) senses agitating movement of a tray (90) that contains biological fluids. Methods include calibrating (781-785), sensing (770-773) and correcting (774-775) light intensity measurements, and determining the length of treatment (776) to reach a desired illumination dose. A radiometer (460) is equipped with a plurality of light sensors (469) disposed on both sides to measure light intensity in chamber (40) and to provide a reference for calibrating light sensing system (650).
REFERENCES:
patent: 6190609 (2001-02-01), Chapman et al.
Supplementary European Search Report, Sep. 20, 2007.
Partial Supplementary European Search Report, Oct. 7, 2007.
Cimino George D.
Hatch Walter Page
Stark Peter
Waldo Jeffrey M.
Cerus Corporation
Cook Alex Ltd.
Fenwal, Inc.
Pham Hoa Q
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