No abstract
This paper was trying to find out a suitable hydraulic model for studying the frequency characteristics between blood pressure waveforms and systemic blood distribution. I n the hydraulic model, the elastic tubes simulated the aorta and its major branches. The small balloons nith different stiffness were used as organs. We used two kinds of tubes to test the hydraulic model and tried to find out suitable material to simulate the aorta and its major branches. We also used different volume of balloons to simulate the organs The selCdesigned pump that could generate arbitrary pressure waves and pure sinusoidal waves was used to simulate the heart. For each different output waveforms of the pump, we measured the flow into each balloon by ultrasonic transducer and the pressure at the same sites by strain gauge transducer. Summary of the experiments showed that the latex tube was suitable material than silicon tube. In this way, this paper provides a framework for future efforts in hydraulic model andanimal model experiments for the systemic circulation. Kqwavds-Circulatory system, hydraulic model, pressure pump I. NTRODUCTIONThis study was trying to find out a suitable hydraulic model to understand the relationship between arterial blood pressure and blood flow. We also wanted to emphasizeon the relation between blood distribution and frequency characteristics of blood pressure waveform.We built an arterial model [I-21 and designed a pressure punp [3]. The arterial model was built with the elastic tubes to simulate the vessel and the balloons to simulate the organs. We used two kinds of tubes to simulate the vessels. The small balloons with different volume were to simulate the different organs. The pressure pump basing on a linear motor could accurately synchronize with an animal's heartbeats by using a phaselock loop (PLL) technique. It has great flexibility and the ability to generate both arbitrary pressure waves and pure sinusoidal waves. We used the pressure pump to generate waves with different frequency components, and fed the waves into the arterial model. The experiment then observed the entrance flow of different sites in model. METHODSThe whole study had two partial works. One was to build a hydraulic model of arterial system and the other was to design the pump. The arterial model was to simulate the vessel and the organs. We used two kinds of tubes to simulate the vessel and different volumes of balloons to simulate the different organs. In the hydraulic model, \\e used a network of elastic tubes to simulate the vessels and balloons attached to tubes end to simulate the organs. We divided the arterial model into eight segments and six balloons (Figure I). Segment 1 and 2 were the aorta thoracalis. Segment 3 and 4 were the aolta abdominalis. Segment 5 was aorta coelica. Segment 6 was the aorta gastrica. Segment 7 was the aorta lienalis. Segment 8 was the aorta hepatica. Balloon 1 wasthe ga'stric. Balloon 2 wasthe splenic. Balloon 3 was the hepatic. Balloon 4 was the right renal. Balloon 5 was the left ren...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.