| 摘要 |
<p>A method and apparatus for maintening the concentration of glucose in a person, animal or tissue within a predetermined range, is disclosed. An implanted sensor of living cells (2) produces a detectable electrical signal which varies with the concentration of glucose. A controller (4) detects the electrical signal produced by the sensor (2) and determine, if the concentration of glucose is within the predermined range. If the glucose is too low or too high, the controller activates a pump causing either glucose or glucagon, or insulin to be delivered to the person until the glucose level is within the predetermined range. A separate pump for delivering each of the glucose and insulin may be used, or a single pump which is switching between them may be used. The system may be adapted to maintain other constituents or conditions within a predetermined range by changing the sensor in use, and by using agents and counter-agents appropriate to the condition or constituent level being monitored.</p> |
