UGO BASILE - I
TALY
Page 2
Series 58000 Instruction Manual (Rev.1)
2
INSTRUMENT DESCRIPTION
Figure 1 “Pressure Generator”
2.1
Pressure Generator System
A geared motor (
1
), via a crank-link-gudgeon (
2
,
3
,
4
) causes the forward and reverse
motion of a piston (
5
) into a stationary cylinder (
6
), see Figure 1 “Pressure Generator”.
This pressure generating mechanism is fastened to a sturdy aluminium plate (
8
).
The pressure is transmitted via an appropriate piping (
13
) to an expansion vessel (
7
), a
blow-out valve (
9
), a pressure gauge (
10
) and the tail cuff (
12
) through the pneumatic
connection (
11
), see Figure 2 “Pneumatic Circuit”.
The cuff pressure increases until it exceeds the diastolic pressure and starts to constrict
the tail artery (
arteria caudalis
). The amplitude of the recorded pulse wave decreases un-
til the artery is completely constricted (
ischemic
) and the graph becomes a straight line.
When the operator selects the “compression measurement” only, a point indicates on the
paper grid the maximum internal pressure of the artery (
systolic pressure
).
