Permanent magnet keeper-shield assembly

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

A - Human Necessities

61

N

A61N 2/08 (2006.01) A61K 9/14 (2006.01) A61K 49/00 (2006.01) H01F 7/02 (2006.01)

Patent

CA 2403995

A magnet keeper-shield assembly (10) adapted to hold and store a permanent magnet (16) used to generate a high gradient magnetic field. Such a field may penetrate into deep targeted tumor sites in order to attract magnetically responsive micro-carriers. The magnet keeper-shield assembly (10) includes a magnetically permeable keeper-shield with a bore (14) dimensioned to hold the magnet (16). A screw driven actuator (34) is used to push the magnet (16) partially out of the keeper-shield (10). The actuator (34) is assisted by several springs (36) extending through the base (28) of the keeper-shield (10).

L'invention concerne un ensemble blindage d'armature d'aimant permanent conçu pour contenir et stocker un aimant permanent servant à produire un champ magnétique à gradient élevé. Ce champ peut pénétrer dans des sites tumoraux profonds ciblés afin d'attirer magnétiquement des microsupports sensibles. L'ensemble blindage d'armature d'aimant comprend un blindage d'armature magnétiquement perméable présentant un orifice conçu pour contenir l'aimant. Un actionneur entraîné par vis est utilisé pour pousser l'aimant partiellement hors du blindage d'armature. L'actionneur est assisté par plusieurs ressorts s'étendant à travers la base du blindage d'armature.

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