| 摘要 |
An apparatus for the administration of a medicine, the apparatus including a hydraulic passage and a porous element, in some embodiments, a membrane, in the hydraulic passage, wherein the rate of administration is controlled, adjusted or selected by determining the rate of flow or delivering a component of an impulse pressure of a hydraulic fluid flowing through the passage and porous element. In some embodiments, different porous elements, a porous element having portions of varied permeability or a cover for covering all or a portion of the porous element may be used for selectively controlling or varying the rate of flow and, thereby, the rate of administration of the medicine.
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