Figure 4: ECG Of The Heart
2.3. Pulsatile Flow
Pulsatile flow is such a flow that varies with time. Another property of pulsatile flow is that it is usually periodic in nature that is, a specific flow pattern is repeated over time. This type of flow can be found in the cardiovascular system of chordate animals, where the heart produces the pulsatile flow [9]. The phenomenon of de-polarization and re-polarization of atria and ventricles is an example to produce pulsatile flow in human hearts. An electrocardiogram (ECG) plot of pulsatile flow for a human heart is shown by the figure below. Figure 4: ECG of the Heart (amperordirect.com)
The results of two pumping effects in the Cardiovascular flow is the pulsating characteristics kind of flow. The heart acts as the primary pump which that makes the blood to flow as well as changes in velocity. The blood velocity then oscilates from zero velocity to to very high velocities as the entrance and exit valves intermittently close and open with each beat. The second pumping effect results from the respiratory and skeletal systems. These acts on the venous flow [10]. The resulting pulsation as the blood is released from the left ventricle shows that the flow …show more content…
In this invention, the peristaltic pump incorporates at least one pumping roller and one occluding roller. The occluding roller is located diametrically across the pumping roller and is designed to provide occlusion only and not progressive squeezing of the pump tubing while rotating in the same direction as the pumping roller in which such occlusion prevents back-flow through the tubing. More than two rollers spaced evenly along the periphery of the rotor allow for various useful combinations of pumping and occluding rollers. Two occluding and one pumping roller combination create a pulsatile flow close to that of a human heart with systole being about twice shorter than diastole
Pulsatile flow is such a flow that varies with time. Another property of pulsatile flow is that it is usually periodic in nature that is, a specific flow pattern is repeated over time. This type of flow can be found in the cardiovascular system of chordate animals, where the heart produces the pulsatile flow [9]. The phenomenon of de-polarization and re-polarization of atria and ventricles is an example to produce pulsatile flow in human hearts. An electrocardiogram (ECG) plot of pulsatile flow for a human heart is shown by the figure below. Figure 4: ECG of the Heart (amperordirect.com)
The results of two pumping effects in the Cardiovascular flow is the pulsating characteristics kind of flow. The heart acts as the primary pump which that makes the blood to flow as well as changes in velocity. The blood velocity then oscilates from zero velocity to to very high velocities as the entrance and exit valves intermittently close and open with each beat. The second pumping effect results from the respiratory and skeletal systems. These acts on the venous flow [10]. The resulting pulsation as the blood is released from the left ventricle shows that the flow …show more content…
In this invention, the peristaltic pump incorporates at least one pumping roller and one occluding roller. The occluding roller is located diametrically across the pumping roller and is designed to provide occlusion only and not progressive squeezing of the pump tubing while rotating in the same direction as the pumping roller in which such occlusion prevents back-flow through the tubing. More than two rollers spaced evenly along the periphery of the rotor allow for various useful combinations of pumping and occluding rollers. Two occluding and one pumping roller combination create a pulsatile flow close to that of a human heart with systole being about twice shorter than diastole