Permanent magnet keeper-shield assembly

Details Permanent magnet keeper-shield assembly Permanent magnet keeper-shield assembly

2006-08-15

2006-08-15

Lacyk, John P. (Department: 3736)

Surgery

Magnetic field applied to body for therapy

Reexamination Certificate

active

07090636

ABSTRACT:
A magnet keeper-shield assembly adapted to hold and store a permanent magnet used to generate a high gradient magnetic field that, in one embodiment, may penetrate into deep targeted tumor sites in order to attract magnetically responsive micro-carriers. The magnet keeper-shield assembly includes a magnetically permeable keeper-shield with a bore dimensioned to hold the magnet. A lever mechanism is used to push the magnet partially out of the keeper-shield. The actuator is assisted by several springs extending through the base of the keeper-shield.

REFERENCES:
patent: 5705195 (1998-01-01), Volkonsky et al.
patent: 6200547 (2001-03-01), Volkonsky et al.
patent: 6488615 (2002-12-01), Mitchiner et al.
patent: 6663555 (2003-12-01), Mitchiner et al.

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