ABSORBABLE
SUTURE
Catgut
(Plain)
The origin is from the intestine of
animals and after processing 98% of the extracted material is collagen. Each of
the strands is then graded and separated into six metric size: from the
thinnest to the thickest, 2(4/0), 3(3/0), 3.5(2/0), 4(0), 5(1), and 6(2)
(The sizes refer to metric gauge, the sizes in brackets are the USP equivalents). The metric size approximates the diameter of the strand in millimeters × 10.
(The sizes refer to metric gauge, the sizes in brackets are the USP equivalents). The metric size approximates the diameter of the strand in millimeters × 10.
Uses (Fig. above)
The finished catgut is cut into
lengths of about 70 cm (30 in) or 1.52 m (5 ft) to form ligatures or ‘needled’
sutures.
The
attachment of nontraumatic suture needles is a machine procedure.
There
are two basic methods of needle attachment. A hole may be drilled into the
blunt end of the needle shaft, or the needle can be flanged at this end to form
a groove. Machines are used to close the prepared needle and tightly around the
suture material, which is the “pull tested” to ensure that it is firmly
attached to the needle. This material is then sterilized and package in a fluid
in small easy to handle packages.
Catgut passes through tissues smoothly
and easily.
• It
swells and loses its strength at the end of one week, there is loss of 70% of
its strength
• It
disintigrates by proteolysis and is rapidly absorbed.
• There
is an inflammatory response to its presence in the tissues.
It
is used as ligature for small vessels and also as a suture for a subcutaneous
stitch under the skin.
Catgut
(Chromic)
The origin of this suture material is
the same as catgut (plain). The material obtained from animal intestine is
treated by immersion in a dichromate bath. It is sterilized and package in a
similar manner as plain catgut. Its treatment in a chromic bath delays its
disintegration and this suture loses 70% of its strength by the end of
second week.
Uses
It is used as a ligature from blood
vessels and also for suturing the mucosa of the GI tract, urinary tract,
respiratory tract, peritoneum and muscle.
Surgical
catgut is wet packaged in alcohol in hermetical sealed pack and presterilized.
Any questions be sent to drmmkapur@gmail.com
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