SUTURES APPLICATION OF MEDICAL TEXTILE.pptx
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Transcript of SUTURES APPLICATION OF MEDICAL TEXTILE.pptx
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SUTURES APPLICATION OF MEDICAL TEXTILE
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Suture means, “to sew” or “seam”.
Sutures are the integral part of the surgical process used to close cuts and incision to ligate blood vessel and to draw tissue together and thereby preventing further infection
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The suture is used to bring
The edges of wound in close approximation, to retain the medicated plug for dressing in deep wound or cavity,
To close any accidental opening To keep the lips of a deep extensive open wound
in contact temporarily To check recurrent hemorrhage
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• Impact on the wound healing process
• Minimum reaction with tissue and maximum healing
• Good elasticity and good plasticity to accommodate wound swelling
• Physical and mechanical properties
• Handling properties
• Knotting properties &Easy to sterilize
• Non electrolytic
• Non allergic
• Cheap
Selection of the suture
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Suture characteristics
Suture choice should be based on the patience, the wound, the tissue characteristic and the anatomic location
In different situations and with differences in tissue composition throughout the body, the requirement for adequate wound closure require different suture characteristic.
Suture possesses the characteristics that determine the utility
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terms describe various characteristics related to suture material
Breaking strength
Capillarity
Elasticity
Fluid absorption
Knot-pull tensile strength
Knot strength
Memory
Plasticity
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SUTURE MATERIAL
ABSORABLE
NATURALCollagen, Surgical
gut
SYNTHETICPolyglactinPolysorb
NON ABSORABL
E
NATURALSilk,
cottonsteel
SYNTHETIC
Nylon, polyester
CLASSIFICATION OF THE SUTURE
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ABSORABLE SUTURE
• Calgut ,polydioxa one, polyglycolic acid• Used for deep tissue ,membranes & subcuticular
skin closure
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may be used to hold wound edges in approximation temporarily, until they have healed sufficiently to withstand normal Stress
Natural absorbable sutures are digested by body enzymes which attack and break down the suture strand.
Synthetic absorbable sutures are hydrolyzed—a process by which water gradually penetrates the suture filaments, causing the breakdown of the suture's polymer chain
Some are absorbed rapidly, while others are treated or chemically structured to lengthen absorption time.
ABSORABLE - SUTURE
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Absorbable - sutures inherent limitations
If a patient has a fever, infection, or protein deficiency, the suture absorption process may accelerate, causing too rapid a decline in tensile strength.
if the sutures become wet or moist during handling, prior to being implanted in tissue, the absorption process may begin prematurely.
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Non-absorbable
Polyester ,nylon ,stainless steel Silk*(*not a truly permanent material; known to be broken down over a prolonged period of time—years)
Used for skin (removed) and some deep structure
(tendon,vessels nerve repair-not removed)
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Non-absorbable
not digested by body enzymes or hydrolyzed in body tissue.
They are made from a variety of non biodegradable materials and only used when long term support is required
Exterior skin closure, to be removed after sufficient healing has occurred and tissue reaction is slow
Within the body cavity, where they will remain permanently encapsulated in tissue.
Patient history of reaction to absorbable sutures, keloidal tendency, or possible tissue hypertrophy.
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Suture Classification
Mono filament Multi filament (braided)
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Grossly appears as single strand of suture material; all fibers run parallel
Minimal tissue trauma
Resists harboring microorganisms
Ties smoothly
Requires more knots than multifilament suture
Possesses memory Examples:
Monocryl, PDS, Prolene, Nylon
Monofilament Suture
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Multifilament Suture
Fibers are twisted or braided together
Greater resistance in tissue
Provides good handling and ease of tying
Fewer knots required
Examples:
Vicryl (braided)
Chromic (twisted)
Silk (braided
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1. Has capillary action2. Increased infection risk3. Less smooth passage4. Less tensile strength5. Better handling6. Better knot security
1. No capillary action2. Less infection risk3. Smooth tissue
passage4. Higher tensile
strength5. Has memory6. More throws
required
Braided v Monofilament
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NaturalSilk, linen, catgut
Synthetic polymerPolypropylene, polyester, polyamide
Silk Catgut
Polypropylene Polyester
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Suture Degradation
Suture Material Method of Degradation
Time to Degradation
“Catgut” Proteolytic enzymes Days
Vicryl, Monocryl Hydrolysis Weeks to months
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Suture Size
• Sized according to diameter with “0” as reference size
• Numbers alone indicate progressively larger sutures (“1”, “2”, etc)
• Numbers followed by a “0” indicate progressively smaller sutures (“2-0”, “4-0”, etc)
Smaller --------------------------- Larger .....”3-0”...”2-0”...”1-0”.....”1”...”2”...”3”.....
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Latest development in suture
Radioactive sutures and other fibrous surgical products
Smart sutures
Suture of polylactic acid