Apparatus for monitoring the presence of secretions in the respiratory system of a patient
First Claim
1. 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.
1 Assignment
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Accused Products
Abstract
An apparatus for monitoring the presence of secretions in an artificial respiratory system comprises at least one sensing element (20) to detect waves generated by said secretions and output a main signal (50), representative of at least one main parameter characteristic of the waves; a first processing block (30) connected downstream of said first sensing element (20), is set to input the main signal (50) and to generate a corresponding main output alarm signal (51), in the case in which the main parameter has a greater value than a predetermined threshold value.
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Citations
38 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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:
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a first 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 first processing block, connected downstream of said first sensing element, 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; a second sensing element associated with said tubular duct for detecting the waves generated by said secretions and outputting an auxiliary signal that is representative of at least one auxiliary parameter characteristic of said waves, said auxiliary signal being defined by one or more spectral components, each having a respective amplitude; a second processing block, connected downstream of said second sensing element for receiving said auxiliary signal as an input and generating an auxiliary output alarm signal, when the auxiliary parameter has a value greater than a predetermined threshold value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. 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:
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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 element 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 said processing block comprises a filtering element capable of amplitude-filtering said main signal and generating the main output alarm signal when at least one of the spectral components of the main signal has a greater amplitude than said threshold value, wherein said filtering element comprises a diode. - View Dependent Claims (31, 32, 33)
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34. 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:
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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 element, 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 comprises an electromechanical transducer capable of detecting said waves, which waves comprise mechanical vibrations generated by said secretions and propagating through at least one side wall of the tubular duct, wherein said electromechanical transducer is a piezoceramic bimorph sensor positioned at least partly in contact with said side wall. - View Dependent Claims (35, 36, 37)
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38. 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:
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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 element 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 said tubular duct further comprises a union element interposed between said first and second portions, wherein said sensing element is positioned on said union element.
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Specification