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

Kozarski M., Zieliński K., Pałko K. J., Stankiewicz B., Bożewicz D., Darowski M.

Biocybernetics and Biomedical Engineering

2009

Vol. 29, no. 3

3-18

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.

Telemetryczny nadzór przebiegu ciąży z adaptacyjnym doborem zakresu interpretacji przenośnego monitora

Bożewicz D., Wróbel J., Jeżewski J., Matonia A., Pałko T., Gacek A., Kupka T., Horoba K.

Prace Naukowe Politechniki Warszawskiej. Elektronika

2006

z. 157

117-122

The system was designed for medical investigation beyond hospital unit. It can be applied in all places which are within the range of mobile phone network area. It shows the signal acquired from the cardiotocograph on the patient device screen and send all received data to the Clinical Surveillance Center (CSC). The data in CSC are analysed and presented on the medical doctor PC display. This system give possibility of permanent woman monitoring without hospitalisation. If medical doctor notes something suspicious, he can remotely take decision about medical intervention. Presented system of data acquisition and teletransmission fulfils the last standards of medicine, which expect more quickly exploration, better patient comfort and make communication with a medical doctor much easier.