PRESSURE SENSING DEVICE WITH TEST CIRCUIT

摘要

A pressure sensing device for coupling to a cannula and receiving respirator y breathing information from a patient to be monitored. The pressure sensing device comprising an exterior housing accommodating a snore detection circui t which processes information and outputs a signal indicative; an airflow detection circuit which processes information and outputs a signal indicativ e thereof; and an internal test circuit for testing an integrity of the airflo w and snore detection circuits prior to use of the pressure sensing device to ensure that both circuits are operational. An input port for pressure sensin g device extends from the housing of the pressure sensing device so as to spac e a connector, for the cannula, a sufficient distance away from the bottom surface whereby the bottom surface will always remain flush with and in constant and continuous intimate contact with a support surface for the pressure sensing device.