1 1-1 (1) 150[ml] 500[ml/] Cerebral Ventricle Brain 1-1
2 ( ) 1-1 1-2 0.20.5[mm] 13 14[mm] 1-2
3 ( ) (2)
4 2-1 (cerebral ventricle) (peritoneum) R O p O Cerebral Ventricle Valve Brain R o R i P i Peritoneum P o d P l h 2-1
5 V(t) Q( ) d v(t) dv dt 2 πd = Q v (1) 4 V R i 4 3 V = πr i (2) 3 (2) (1) dr dt i 2 1 πd = Q v R (3) 2 4π i 4 v p i p o g h p l p i + ρgh = p o l + λ d ρ v 2 2 + p ( p p + ρgh p) d i o v = 2 (4) λlρ 64 16πd µ λ = = (5) Re Q ρ (4) p i r β δ = αr + (6) 2 r
6 (r=r o ) =0 β 0 = α Ro + R o 3 β = αr o (7) (7) (6) αro r δ = αr = α 2 r 3 3 R r 3 o (8) (3) p i 1 + ν β = 2G α 2 3 1 2ν Ri 1 + ν R = 2G α + 2α 1 2ν R 1 + ν R = 2Gα + 2 1 2ν R o i 3 o 3 i 3 (9) t R i R old i 8 δ = α old 3 ( Ri ) old ( R ) i 2 R 3 o dr = dt i t Ri α = 3 R R o 2 3 i dr dt i t (10) p i 3 o 2 i R = 2G R R 3 i dr dt i 1 + ν R t + 2 1 2ν R o i 3 (11) (4) (3) dr dt i 2 1 2dπd = Q p p + gh p i o ρ (12) 2 4πR i 4 λlρ (11) p i t
7 ARES 1000[rpm]10 ARES 2-1 2-2 ( 0.04100 [g cm])
8 2-2ARES 2-3
9 L R B M τ 98000 τ = M 2 πl ( ) 3 R B γ& τ µ = & γ 36.4 2-3 L=32 R B =33.3 2-4
10 20[mm] 2-4 2-5
11 500[ml] 21[ml/h] 300[ml/h] h h h p p 1 p 2 =998 [kg/m 3] g 1.2[mm] valve d=1.2[mm] Tube h l=0.67[m] p 2-6 p 1 =p 2 p 1 + ρ gh = p 2 l + λ d ρ v 2 2 + p l p = ρgh λ d ρ 2 2 v =110-3 [Pa s] Q [ml/h] 16πdµ λ = Qρ
12 2-6 p 2-7
13 G=4.14 [kpa] (4) G h=0.7[m]l=1 [m]d=1.2 [mm]r o =7.5 [cm] =1 10-3 [Pa s] =110 3 [kg/m 3 ]Q=500 [ml/day] =0.42 R i =2.5 [cm] 639.946413 [Pa]1973.17600 [Pa] 773.268387 [Pa]2053.16587 [Pa] (5) p i =639.946 [Pa] p o =2053.16 [Pa]( ) p i t G 3-1
14 i R G t 3-2 R i G 3-3 R i G
15 3-1 G 3-2 G G 30 3-3 G=3000[Pa] G=3000[Pa] G=4000[Pa] =0.42 0.49 h=0.7 [m]l=1 [m]d=1.2 [mm] p o =2053.16 [Pa]( )R o =7.5 [cm]=1 10-3 [Pa s] =110 3 [kg/m 3 ] Q=500 [ml/day]g=4.14 [kpa] p i =639.946 [Pa]R i =2.5 [cm] 3-43-5
16 p i t 3-4 R i t 3-5
17 h p i 3-6 l=1 [m] d=1.2 [mm] p o =773.268 [Pa]R o =15 [cm] =110-3 [Pa s] =110 3 [kg/m 3 ]Q=500 [ml/day] =0.42G=4.14 [kpa] p=1000 [Pa] p i =639.946 [Pa]R i =5 [cm] h h 0.1 [m] 1[kPa] h p i t 3-6 h
18 p i R i v p h=0.7 [m]l=1 [m]d=1.2 [mm]p i =639.946 [Pa]R o =7.5 [cm] =110-3 [Pa s] =110 3 [kg/m 3 ]Q=500 [ml/day] =0.42G=4.14 [kpa] p o =2053.16 [Pa]R i =2.5 [cm] t=0 23 p p i p=300 [Pa]pi=4350 [Pa] 4500 [Pa] (5) p 15 p i p t 3-7
19 R i p t 3-8 v t p 3-9
20 p i R i v p h=0 [m]l=1 [m]d=1.2 [mm] p o =773.268 [Pa]R o =7.5 [cm] =110-3 [Pa s] =110 3 [kg/m 3 ]Q=500 [ml/day]=0.42g=4.14 [kpa] p i =639.946 [Pa] R i =2.5 [cm] 3-83-9 t=010 p p i p t 3-10
21 R i t 3-11 v t 3-12
22 p p
23 4-1 Rigolac 4[mm] AD Converter DA Converter Stepping motor Computer Valve Pressure Sensor 4-1
24 200 4-2 4-2
25 Rigolac 4-3 Tube for Pressure Sensor Tube for Discharge 4-3 4-44-5 E=10[kPa]=4.9 E=1.25[kPa]=4.9
26 4-4 4-5
27 4-6 Brass Pipe Needle Valve Silicon Tube Gear Needle Stepping motor 4-6 KH42Hm2-801 1.8 deg./step 3.96 V 0.82 A/PHASE 4.8 /PHASE 2.4 mh/phase 1.3 kgf[cm] 120 gf[cm] 42 g[cm] 2 200 g E 500VDC 100
28 2-5 h=70[cm] d=1.0[mm] l=1.02m 4-7 80 0 P P 4-7 P
29 Honeywell 40PC001B 4-8 Port Port Port PIN1 V Port PIN Port PIN1 Port PIN PIN 4-8 Pressure Range Null (VDC) S[Pa]n (VDC) Sensitivity 50[mm]Hg 2.500.050 4.00 Typ. 40.0mV/[mm]Hg Linearity (%S[Pa]n) max. Null Shift (%S[Pa]n) max. S[Pa]n Shift (%S[Pa]n) max. 0.80 1.50 1.50
30 Port 4-9 Port Port Linearity 0.8% V P 4-9
31 5-15-6 P=0[Pa] l=1.02m d=1.0[mm] R o =7.5[cm] P o =0[Pa]=10-3 [Pa s] =1000[kg/m 3 P i =0[Pa] R i =3.14[cm] h 450[mmAq] 50[cm] P i t h=20[cm]
32 P i t h=30[cm] P i t h=40[cm]
33 P i t h=50[cm] P i t h=60[cm]
34 t P i h=70[cm] 300[mmAq] 5-7 5-10 70[cm] 80 50sec
35 P i t 5-7 ( ) P i t 5-8 ( 10)
36 P i t 5-9 ( 0) P i t 5-10 ( 0)
37 1.5 20 5-115-14 P i t 5-11 ( )
38 P i t 5-12 ( 0) P i t 5-13 ( 0)
39 P i t 5-14 ( 0)
40 23 15 p p p=300[pa] 10 p=1000[pa] 30 p=2000[pa] 70 p
41 (1) 58-551 A(1992)114 (2) shunt system Progra[mm]able shunt valve 9 56 (3)( 1966109-111 (4) 55-512A(1989)957 (5) 9 118
42