Pumps for Human Blood Pressure Simulation - Microsurgery: Advances, Simulations, and Applications - page 213

maxima of low circulation with a guide wire applying stress to
model wall. In N 5 the guide wire deforms the model wall. System
integration is shown in Fig. 6.7.
Human blood pressure was simulated with an average error of
5.6% at a frequency of 1.01 Hz, as shown in Fig. 6.8. When the pump
was tested with the urethane elastomer model, the reciprocation
stroke was increased for testing the shielding endurance, achieving
a pressure range between 98 and 182 mmHg for registration of N 3 ,
N 4 , N 5 and F . Figure 6.9 shows that pressure produced by the luid
was within the same range whether the guide wire was inside or
outside the model, so stress calculation differences are caused by the
catheter and model deformation.

160

120

80

Reference Signal
Reconstructed Signal

40

0 1.05 3.14 5.25 7.35

Time (s)

Figure 6.8 Human blood pressure simulation using a hybrid pump.

250

200

150

100

Without Catheter (F n )
With Catheter (N 4 , N 5 )

50

0

0.12 0.27 0.36 0.48 0.63 0.75

Time (s)

Figure 6.9 Estimated pressure ranges during registration of F , N 4 and N 5 .