<s>
Culdoscope	B-Algorithm
is	O
an	O
instrument	O
,	O
a	O
kind	O
of	O
endoscope	O
,	O
used	O
to	O
visualize	O
female	O
pelvic	O
organs	O
,	O
introduced	O
through	O
the	O
vagina	O
into	O
the	O
cul-de-sac	O
(	O
which	O
is	O
also	O
called	O
the	O
rectouterine	O
pouch	O
or	O
the	O
pouch	O
of	O
Douglas	O
)	O
.	O
</s>
<s>
The	O
procedure	O
of	O
inserting	O
the	O
culdoscope	B-Algorithm
into	O
the	O
rectouterine	O
pouch	O
is	O
termed	O
culdoscopy	O
.	O
</s>
<s>
The	O
word	O
culdoscope	B-Algorithm
(	O
and	O
culdoscopy	O
)	O
is	O
derived	O
from	O
the	O
phrase	O
cul-de-sac	O
,	O
which	O
in	O
French	O
literally	O
means	O
"	O
bottom	O
of	O
a	O
sac	O
"	O
,	O
here	O
referring	O
to	O
a	O
blind	O
pouch	O
or	O
cavity	O
in	O
the	O
female	O
body	O
that	O
is	O
closed	O
at	O
one	O
end	O
,	O
that	O
is	O
the	O
rectouterine	O
pouch	O
.	O
</s>
