摘要：

An implantable capsule for delivering drugs when subjected to a magnetic force outside the body and controlled by the patient. The capsule has a means movable under a magnetic force to effect contact of the medicament in the capsule with a drug-permeable wall. When contacted, the drug diffuses through the wall into the body. When it is desired to cease drug administration, the capsule is subjected to an opposite magnetic force to seal the permeable wall from contact with the drug.

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