The new hybrid pneumo-electrical piston model of lungs mechanics - preliminary tests

• Autorzy: Kozarski M. , Zieliński K. , Pałko K. J. , Stankiewicz B. , Bożewicz D. , Darowski M.
• Języki publikacji: EN

Abstrakty

EN

A design principle, construction and results of preliminary tests of a new hybrid physical-electrical model of lungs mechanics has been presented, The methods leading to development of lungs models of different complexity have been also included. The basic component of the model is a voltage controlled Bow source build up with a piston ~ cylinder system driven by a servomotor. This is used to develop a functional module playing a role of an impedance converter transforming an input electrical impedance Z0 of any electrical network connected to its electrical terminals into a pneumatic impedance Zin. Static and dynamic characteristics of the model connected to different pneumatic signal sources have been presented i.e. for the model connected with the respirator (expiration by the respiratory valve) and for the model with free unobstructed expiration. The very good dynamic features (time constant of the piston Bow source less than 1 ms) and a small resultant error of impedance conversion (less than 1%) enable the model to be applied in many application especially when new methods of lung ventilation are developed.

Słowa kluczowe

EN

lungs mechanics; hybrid modeling; lungs model; respiratory system tests

PL

płuco; respirator; model płuca

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2009
• Tom: Vol. 29, no. 3
• Strony: 3--18
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Kozarski M.

autor

Zieliński K.

autor

Pałko K. J.

autor

Stankiewicz B.

autor

Bożewicz D.

autor

Darowski M.

• Instytut Biocybernetyki, Polska Akademia Nauk

Bibliografia

• 1 . Darowski M., Kozarski M., Gólczewski T.: Model studies on respiratory parameters for different lung structures. Biocybernetics and Biomedical Engineering 2000, 20, 67-77.
• 2. Polak A.G.: A unified mathematical model of airflow during maximum expiration. Modelling Measurement and Control, C, 1997, 56, 55-64.
• 3. Gólczewski T., Kozarski M., Darowski M.: The respirator as a user of virtual lungs, Biocybernetics and Biomedical Engineering. 2003, 23, 2, 57-66.
• 4. DuBoisA.B., Brody A.W., Lewis D.H., Burgess B.F.: Oscillation Mechanics of Lungs and Chest in Man. J. Appl. Physiol. 1956, 8, 587-594.
• 5. Verbraak A.F.M., Rijnbeek P.R., Beneken J.E.W., Bogaard J.M., Versprille A.: A new approach to mechanical simulation of lung behaviour: pressure-controlled and time-related piston movement. Medical and Biological Engineering and Computing 2001, 39, 82-89.
• 6. Kozarski M., Darowski M., Glapiński J: Piston simulator of lungs mechanics. RP Patent No 183237, 28.06.2002.
• 7. Active Servo Lung 5000 - made by "IngMar Medical", USA.
• 8. Kozarski M., Zieliński K., Pałko K.J., Kosińska A., Darowski M.: Hybrid model of respiratory system for mechanical support optimization. 5th European Symposium on BioMedical Engineering (ESBME2006), July 7-9 2006, Patras, Greece.
• 9. Barbini R, Brighenti C., Gnudi G.: A simulation study of expiratory flow limitation in obstructive patients during mechanical ventilation. Ann. Biomed. Eng., 2006, 34, 1879-1889.
• 10. Polak A.G., Mroczka J.: A simplified model for airflow In the bronchial tree. Proceedings of the 7th International IMEKO TC-I3 Conference on Measurement in Clinical Medicine "Model Based Biomeasurements", 6-9 September 1995, Stara Lesna, Slovakia, 3-6.
• 11. Bates J.H.T., Lauzon A.M.: Anon statistical approach to estimate confidence intervals about model parameters: applicalion to respiratory mechanics. IEEE Trans. Biomed. Eng, 1992, 39, 94-100.
• 12. Kaczka D.W., Barnas G.M., Suki B., Lutochen K.R.: Assessment of time-domain analyses for estimation of low-frequency respiratory mechanical properties and impedance spectra. Ann. Biomed, Eng. 1995, 23, 135-151.
• 13. Lutchen K.R., Costa K.D.: Physiological Interpretations Based on Lumped Element Models Fit to Respiratory Impedance Data: Use of Forward-Inverse Modeling. IEEE Interactions on Biomedical Engineering 1990, 37, 11, 1076-1086.