| 摘要 |
<p>The present invention provides a ventilator suitable for assisting ventilation of a mammalian subject, and particularly a human patient: this ventilator employs an exhalation valve, and a simple, passive PEEP valve. During the ventilator's exhalation phase the respiratory gas exits through this passive PEEP valve, which operates independently of ventilator functions and maintains a pre-determined minimum gas pressure within the ventilation system: i.e. within the ventilator's inhalation path and exhalation path and at an external interface. The external interface provides respiratory gas from the ventilator to the mammalian subject by known means: for example a Y-piece connecting the inhalation and exhalation paths to a breathing mask. Moreover, the invention provides components for monitoring the pressure and flow of respiratory gas so that the ventilator detects and supports the mammalian subject's spontaneous inhalation and/or exhalation.</p> |
