<s>
Harvey	O
was	O
one	O
of	O
the	O
earliest	O
medical	B-Application
simulators	I-Application
available	O
for	O
training	O
of	O
health	O
care	O
professionals	O
.	O
</s>
<s>
Considered	O
one	O
of	O
the	O
groundbreaking	O
products	O
in	O
medical	B-Application
simulation	I-Application
,	O
the	O
cardiopulmonary	O
patient	O
simulator	O
Harvey	O
provides	O
a	O
method	O
of	O
standardized	O
testing	O
for	O
real-time	O
procedures	O
,	O
and	O
skills	O
of	O
the	O
trainee	O
,	O
usually	O
a	O
medical	O
student	O
or	O
resident	O
.	O
</s>
<s>
The	O
Harvey	B-Application
mannequin	I-Application
was	O
named	O
after	O
W	O
.	O
Proctor	O
Harvey	O
,	O
a	O
physician	O
at	O
Georgetown	O
University	O
and	O
mentor	O
of	O
the	O
Mannequin	O
's	O
creator	O
,	O
Dr.	O
Michael	O
Gordon	O
.	O
</s>
<s>
The	O
first	O
commercial	O
model	O
used	O
a	O
series	O
of	O
cams	B-Data_Structure
and	O
levers	O
instead	O
of	O
telephone	O
relays	O
,	O
but	O
kept	O
the	O
4-track	O
tape	O
recordings	O
for	O
sound	O
.	O
</s>
<s>
When	O
the	O
manufacturer	O
of	O
the	O
tape	O
recorder	O
(	O
Ampro	O
Corp	O
)	O
went	O
out	O
of	O
business	O
,	O
a	O
sound	B-Device
card	I-Device
was	O
integrated	O
to	O
mimic	O
heart	O
sounds	O
.	O
</s>
<s>
The	O
third	O
and	O
current	O
version	O
of	O
this	O
simulator	O
uses	O
a	O
servo	B-Algorithm
motor	I-Algorithm
and	O
a	O
sound	B-Device
card	I-Device
to	O
mimic	O
the	O
cardiovascular	O
functions	O
of	O
the	O
human	O
body	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
Harvey	O
cost	O
around	O
$100	O
,	O
000	O
,	O
but	O
the	O
upgrades	O
of	O
a	O
sound	B-Device
card	I-Device
and	O
a	O
servo	B-Algorithm
motor	I-Algorithm
cut	O
the	O
cost	O
to	O
around	O
$	O
50,000	O
.	O
</s>
