Delta Flow Pressure Regulation
First Claim
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1. A mechanical ventilator apparatus (4) for supplying breathing gas to humans (1), the ventilator comprising:
- a ventilator arrangement (4);
a processing unit (201); and
input means for obtaining signals (5, 6, 7, 8, 9, 10) indicative of at least breathing gas flow and pressure;
wherein said processing unit (201) is arranged to analyze said flow signals determining flow change values, using said flow change values as pressure values in a pressure regulating procedure, and regulating said pressure against a set pressure demand value.
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Abstract
A method, system, apparatus, and computer program for detecting breathing pattern changes and controlling a mechanical ventilator in accordance to changes of breathing air flow thus reducing the work of breathing for the patient.
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Citations
14 Claims
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1. A mechanical ventilator apparatus (4) for supplying breathing gas to humans (1), the ventilator comprising:
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a ventilator arrangement (4); a processing unit (201); and input means for obtaining signals (5, 6, 7, 8, 9, 10) indicative of at least breathing gas flow and pressure; wherein said processing unit (201) is arranged to analyze said flow signals determining flow change values, using said flow change values as pressure values in a pressure regulating procedure, and regulating said pressure against a set pressure demand value. - View Dependent Claims (2, 3, 4)
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5. A method for facilitating breathing in connection with a mechanical ventilator arrangement (4), comprising the steps of:
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measuring signals indicative of a breathing gas flow and pressure; processing said breathing gas flow for flow changes; using said flow change values as pressure values in a pressure regulating procedure; and responding to changes of pressure signal obtained from said flow change values in a breathing gas tubing (3) by changing control signals for said mechanical ventilator (4), changing said pressure in said tubing (3) to a set demand pressure using said measured pressure and flow changes as input parameters in a regulating procedure. - View Dependent Claims (6, 7)
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8. A system for facilitating breathing when using a mechanical ventilator arrangement, comprising:
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at least two sensing means (5, 6, 7, 8, 9, 10) for measuring signals indicative of flow and pressure of breathing gas to a patient (1); a breathing gas tubing (3) and breathing gas distribution means (2); a mechanical ventilator apparatus (4); and a processing unit (11, 201); wherein said processing unit is arranged to process data obtained from said sensing means (5, 6, 7, 8, 9, 10) for measuring flow of breathing, using flow change values as input parameters in a pressure regulating procedure, and change controls signals for controlling the supply of breathing gas in order to keep a set pressure. - View Dependent Claims (9, 10)
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- 11. A computer program for controlling a mechanical ventilator apparatus, wherein said program operate on signals obtained from at least two sensing means for measuring flow and pressure of breathing gas to a patient (1), said program using data indicative of flow changes of breathing obtained from said flow measurement in a pressure regulating procedure, and said program transmitting control signals to a mechanical ventilator in response to changes of the pressure of breathing gas using said flow change data as a pressure value compared against a set demand pressure value together with said measured pressure.
Specification