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1
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Preliminary Research of an Optical Sensor for Measurements of the Blood Chamber Volume in the POLVAD Prosthesis

100%
Konieczny G., Pustelny T.
Acta Physica Polonica A
|
2012
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vol. 122
|
issue 5
962-965
EN
The article presents preliminary research of an optical system for using in the temporary blood volume measurements in the Polish Ventricular Assist Device (POLVAD). The basis for the proposed solution is the measurement of the light reflected from the membrane in different configurations of light emitters and light detectors. The paper is describing a proposed measurement technique, measurement circuit and preliminary static measurements results of the developed measurement system. Future development plans are stated.
2
Content available remote

Preliminary Research Concerning Measurements οf the POLVAD Blood Chamber Volume Based οn Helmholtz's Acoustic Resonator Principle

81%
Konieczny G., Opilski Z., Pustelny T.
Acta Physica Polonica A
|
2011
|
vol. 120
|
issue 4
688-692
EN
The article presents researches concerning a system for a possible blood volume measurements applied in POLVAD prosthesis. The proposed solution is based on the Helmholtz resonance principle. The article shows the state of art in blood volume sensors for using in the POLVAD prosthesis and introduces a newly proposed solution. The construction of the sensor and the results of static tests are presented. The work is summarized with future development plans.
3
Content available remote

Research on Pattern Recognition Applied for Volume Estimation of Blood Chamber with Matrix of Optical Sensors

81%
Marczyński P., Konieczny G., Pustelny T.
Acta Physica Polonica A
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2013
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vol. 124
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issue 3
498-501
EN
The following article describes research on possibility of using pattern recognition algorithms in the optical measurement system for estimation of the blood chamber volume in the Polish Ventricular Assist Device (POLVAD). The optical system is being developed at the Department of Optoelectronics, Silesian University of Technology, Poland. Data analysis methods include a feature subset selection algorithm involving principal components analysis and objective function as quality criterion. The analysis takes into account 17 patterns reflecting particular volumes. The k-nearest neighbours method is used as pattern classifier. The pattern recognition system was initially designed for an array of gas sensors and this paper describes its further development.
4
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Quasi-Dynamic Testing of an Optical Sensor for Measurements of the Blood Chamber Volume in the POLVAD Prosthesis

81%
Konieczny G., Pustelny T., Marczyński P.
Acta Physica Polonica A
|
2013
|
vol. 124
|
issue 3
483-485
EN
The article presents further developments of an optical system to be used in temporary blood volume measurements in the Polish ventricular assist device. The research focuses on quasi-dynamic measurements (flow rate of 5 ml/s). Characteristics of signals from selected configurations of optical transmitters and receivers are shown. A volume approximation using a PCA algorithm supported by a LRS function is introduced. Plans of further development are stated.
5
Content available remote

Optical Sensor for Measurements of the Blood Chamber Volume in the POLVAD Prosthesis - Static Measurements

81%
Konieczny G., Pustelny T., Marczyński P.
Acta Physica Polonica A
|
2013
|
vol. 124
|
issue 3
479-482
EN
The paper presents results of extended static measurements of a newly developed optical system for temporary blood chamber volume measurements in the Polish Ventricular Assist Device. The paper additionally introduces a modified measurement stand and improvements of the measurements. Exemplary results acquired with principal components analysis are shown and future development plans of an optical measurement system are stated.
6
Content available remote

State of the Work Diagram of the Artificial Heart

81%
Konieczny G., Opilski Z., Pustelny T., Maciak E.
Acta Physica Polonica A
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2009
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vol. 116
|
issue 3
344-347
EN
This paper presents the results of investigations on novel pressure measurement methods to be for used in the project "Polish Artificial Heart". The investigations concerned possible pressure sensors for noninvasive blood pressure measurements in selected points around the pneumatic ventricular assist device (POLVAD). The fiber pressure sensor and the possibility of pressure measurements with piezofoils were tested. The paper includes preliminary results and development plans.
7
Content available remote

Results of Experiments with Fiber Pressure Sensor Applied in the Polish Artificial Heart Prosthesis

61%
Konieczny G., Opilski Z., Pustelny T., Gacek A., Gibinski P., Kustosz R.
|
|
issue 6
1183-1185
EN
The following paper introduces the problem of noninvasive pressure measurements in Polish artificial heart prosthesis. The pressure sensor is proposed and introduced, and preliminary tests are shown. The paper deals with the proposed sensing elements, requirement noninvasive solution and preliminary tests of polyurethane membrane transmission. The paper includes also experimental results of a fiber pressure sensor introducing noninvasive pressure measurements with pressure transmission through a polyurethane tube wall.
8
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Content available

Noninvasive acoustic blood volume measurement system for the POLVAD prosthesis

61%
Pustelny T., Kustosz R., Opilski Z., Konieczny G., Gacek A., Gawlikowski M.
|
2011
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issue 4
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