scispace - formally typeset
Open AccessJournal ArticleDOI

Quasi-Dynamic Testing of an Optical Sensor for Measurements of the Blood Chamber Volume in the POLVAD Prosthesis

TLDR
Further developments of an optical system to be used in temporary blood volume measurements in the Polish ventricular assist device using a volume approximation using a PCA algorithm supported by a LRS function are presented.
Abstract
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 ( ow rate of 5 ml/s). Characteristics of signals from selected con gurations 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.

read more

Citations
More filters
Journal ArticleDOI

Method of Measuring the Distance to an Object Based on One Shot Obtained from a Motionless Camera with a Fixed-Focus Lens

TL;DR: In this article, the distance measurement to the object is performed by a motionless camera with established and unchanged parameters during measurement, and the measured distance is determined on the basis of one view of an object presented on one image.
Journal ArticleDOI

New Vision Sensor to Measure and Monitor Gas Pressure

TL;DR: In this paper, the authors presented the construction and the use of a video sensor developed to measure air pressure, which is a characteristic feature of the device is pressure measurement based on digital image processing and self-diagnostics performed on the basis of an image.
Proceedings ArticleDOI

Studying the influence of object size on the range of distance measurement in the new Depth From Defocus method

TL;DR: The goal of this paper is to present the influence of the object (marker) size on the distance range measured between the camera and diaphragm used in the external pneumatic prosthetic heart.
Journal ArticleDOI

Optoelectronic system for the determination of blood volume in pneumatic heart assist devices.

TL;DR: Preliminary dynamic measurements conducted on the physical model of the human cardiovascular system show that the proposed optical measurement system may be used to measure the transient blood chamber volumes of pulsatile VAD’s with the uncertainties lower than 10 %.
References
More filters
Journal ArticleDOI

The physical parameters estimation of physiologically worked heart prosthesis

TL;DR: A set of physical parameters is created which characterized pump's operating and its cooperation with circulatory system to create a set of therapeutic effect comparison obtained by different pumps' treatment.
Journal ArticleDOI

Polarization maintaining fibers for application in magnetic field measurements

TL;DR: In this article, side-hole optical fibers with a decreased birefringence reducing the susceptibility to deformations are applied in magneto-optic sensors, where the optical fibers consist of a multicomponent glass with a higher value of the refractive index, thanks to which the sensitivity to the effect of the external magnetic field is increased.
Book ChapterDOI

Preliminary Investigations Regarding the Blood Volume Estimation in Pneumatically Controlled Ventricular Assist Device by Pattern Recognition

TL;DR: A novel approach to the problem of reliable VAD’s output estimation by the use of membrane's shape pattern recognition and related blood's chamber volume determination is presented, leading to the promising results and making possible implementation of the automatic control algorithm in the future.
Journal ArticleDOI

Acoustic system for the estimation of the temporary blood chamber volume of the POLVAD heart supporting prosthesis.

TL;DR: The results show that noninvasive, online temporary blood volume measurements in the POLVAD-EXT prosthesis, making use of the newly developed acoustic system, provides accurate static and dynamic measurements results.