Patent ID: 7691070

Claim:
An apparatus for monitoring the presence of secretions in the respiratory system of a patient provided with a respiratory prothesis, having at least one tubular duct consisting of a first portion at least partly insertable in the patient's orotracheal cavity and of a second portion to be positioned externally of the tracheal cavity, further comprising: at least one sensing element associated with the tubular duct for detecting waves generated by said secretions and outputting a main signal, representative of at least one main parameter characteristic of said waves, said main signal being defined by one or more spectral components, each having a respective amplitude; a processing block, connected downstream of said sensing elements for receiving said main signal as an input and generating a corresponding main output alarm signal, when said main parameter has a value greater than a predetermined threshold value, wherein the sensing element is positioned in a housing located in a sound-proofing wall of the tubular duct.