| 摘要 |
Apparatus for monitoring body functions comprises oscillator means (1) for generating a very high frequency oscillation, an oscillator driven constant current generating source (2), at least one pair of current driven electrodes (4) for attachment to the body of a patient, at least two pairs of voltage sensing electrodes (5) for attachment to the body of the patient, tuner/voltage amplifier means (6) tuned to the frequency of the generator means (1), converter means (7) for measuring impedance changes between pairs of voltage sensing electrodes (5), impedance indicator means (8), isolating circuit means (9) for receiving signals from the impedance converter (7), filter means (10) for excluding electronic or biological fluctuations from the equipment or the subject and a impedance offset control, and recorder means (11 or 12) for recording process and analysing the subject signals, the subject signals being received by the recorder means (11 or 12) as separate signals. Methods of producing a record of the function and volume of a hollow visceral organ are also described. |
