Methods and systems for compensation of tubing related loss effects
First Claim
1. A ventilator system comprising:
- a pressure generating system adapted to generate a volume of breathing gas;
a ventilation tubing system including a patient interface for connecting the pressure generating system to a patient;
at least one sensor operatively coupled to at least one of the pressure generating system and the ventilation tubing system;
a ventilator self-test, the ventilator self-test configured to;
consecutively deliver a plurality of substantially equal volume amounts into a closed ventilator circuit; and
consecutively release a plurality of substantially equal volume amounts from the closed ventilator circuit;
a loss effect compensation module, the loss effect compensation module configured to;
receive a pressure measurement for each volume delivery and each volume release from the ventilator self-test;
calculate a change in pressure for each volume delivery and each volume release;
fit the calculated change in pressure data for each volume delivery and each volume release to an inhalation non-linear tubing compliance model equation and an exhalation non-linear tubing compliance model equation, respectively;
derive one or more inhalation tubing compliance compensation coefficients from the inhalation non-linear tubing compliance model equation; and
derive one or more exhalation tubing compliance compensation coefficients from the exhalation non-linear tubing compliance model equation; and
a processor in communication with and controlling the pressure generating system, the at least one sensor, the ventilator self-test, and the loss effect compensation module.
2 Assignments
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Accused Products
Abstract
A method for ventilating a patient with a ventilator includes consecutively delivering a plurality of substantially equal volume amounts into a closed ventilator circuit during a ventilator self-test, receiving a pressure measurement for each volume delivery, calculating a change in pressure for each volume delivery, consecutively releasing a plurality of substantially equal volume amounts from the closed ventilator circuit during the ventilator self-test, calculating a change in pressure for each volume release, fitting the calculated change in pressure data for volume delivery and volume release to an inhalation non-linear model equation and an exhalation non-linear model equation, respectively, deriving one or more inhalation tubing compliance compensation coefficients from the inhalation non-linear model equation, and deriving one or more exhalation tubing compliance compensation coefficients from the exhalation non-linear model equation.
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Citations
8 Claims
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1. A ventilator system comprising:
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a pressure generating system adapted to generate a volume of breathing gas; a ventilation tubing system including a patient interface for connecting the pressure generating system to a patient; at least one sensor operatively coupled to at least one of the pressure generating system and the ventilation tubing system; a ventilator self-test, the ventilator self-test configured to; consecutively deliver a plurality of substantially equal volume amounts into a closed ventilator circuit; and consecutively release a plurality of substantially equal volume amounts from the closed ventilator circuit; a loss effect compensation module, the loss effect compensation module configured to; receive a pressure measurement for each volume delivery and each volume release from the ventilator self-test; calculate a change in pressure for each volume delivery and each volume release; fit the calculated change in pressure data for each volume delivery and each volume release to an inhalation non-linear tubing compliance model equation and an exhalation non-linear tubing compliance model equation, respectively; derive one or more inhalation tubing compliance compensation coefficients from the inhalation non-linear tubing compliance model equation; and derive one or more exhalation tubing compliance compensation coefficients from the exhalation non-linear tubing compliance model equation; and a processor in communication with and controlling the pressure generating system, the at least one sensor, the ventilator self-test, and the loss effect compensation module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification