Switch-mode oximeter LED drive with a single inductor

Details Switch-mode oximeter LED drive with a single inductor Switch-mode oximeter LED drive with a single inductor

2006-10-10

2006-10-10

Winakur, Eric F. (Department: 3735)

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

C600S310000, C315S186000

Reexamination Certificate

active

07120479

ABSTRACT:
A light emitter drive circuit for an oximeter which utilizes a single inductor for driving multiple light emitters. The inductor is connected to a switching circuit to multiple energy storage circuits, such as capacitors. These are alternately charged up, using the same inductor. Subsequently, the capacitors are alternately discharged for their corresponding light emitters through the same inductor. Also, the magnetic susceptibility of the LED drive circuit is reduced by using magnetic flux canceling in the inductor. In one embodiment, a toroidal inductor is used with geometric symmetry and its magnetic flux. In another embodiment, a dual core closed bobbin shielded inductor is used.

REFERENCES:
patent: 4742294 (1988-05-01), Gallios
patent: 4802486 (1989-02-01), Goodman et al.
patent: 4911167 (1990-03-01), Corenman et al.
patent: 4928692 (1990-05-01), Goodman et al.
patent: 4934372 (1990-06-01), Corenman et al.
patent: 5165162 (1992-11-01), Charles
patent: 5227676 (1993-07-01), Bahr et al.
patent: 5351685 (1994-10-01), Potratz
patent: 5368026 (1994-11-01), Swedlow et al.
patent: 5662106 (1997-09-01), Swedlow et al.
patent: 5713355 (1998-02-01), Richardson et al.
patent: 5746697 (1998-05-01), Swedlow et al.
patent: 5803910 (1998-09-01), Potratz
patent: 5921921 (1999-07-01), Potratz et al.
patent: 5924979 (1999-07-01), Swedlow et al.
patent: 6198405 (2001-03-01), Andersson et al.
patent: 6226539 (2001-05-01), Potratz
patent: 6411045 (2002-06-01), Nerone
patent: 6665551 (2003-12-01), Suzuki
patent: 6897754 (2005-05-01), Jeong et al.
patent: 2044550 (1980-10-01), None

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