sutures material dr.nahed khalaf consultant obgyn al-hada military hospital taif-saudi arabia
TRANSCRIPT
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SUTURES MATERIAL
Dr.Nahed KhalafConsultant OBGYN
AL-Hada Military HospitalTaif-Saudi Arabia
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A thread that either approximates and maintains
tissues until the natural healing process has provided
a sufficient level of wound strength or compresses
blood vessels in order to stop bleeding.
Suture
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History
2000 B.C: using strings & animal for suturing
Hippocrates: concept of suturing200 A.D: Gut of sheep intestine
was1st mentioned as suture material
900 A.D: 1st surgical gut (catgut) for suturing abdominal wounds by an Arabian surgeon
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1500: French army surgeon developed ligation technique for traumatic war injuries
1901: catgut & Kangaroo gut were available in sterile glam tubes
Many materials used: Gold, Silver, metallic wire, silk wire, gut, silk, cotton, tendon, horsehair, linen
History
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Ideal Suture Material
• Achieve its purpose
• Disappear as soon as its work was accomplished
• Easy to handle • Stretched, accommodate wound
edema & recoils to original length with wound contraction
• Minimal tissue reaction & not predisposed to bacterial overgrowth
• Be non-irritant• Capable of secure Knot without
fraying or cutting
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Characteristics of suture material
Physical characteristicPhysical configuration: mono or multifilamentCapillarity: ability to soak up fluid along the
strandFluid absorption abilityDiameter: in millimeters, expressed in USP
sizes with zeroes(no. of 0s’, if increased diameter decreased
tensile strength decreased )Tensile strength: amount of weight (Breaking
load) necessary to break a suture (Breaking Strength)
Elasticity: Inherent ability to regain original form & length after being stretched
Memory: capacity to return to its former shape after being reformed, such as when tied ; high memory yield less Knot security
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Handling characteristicsPliability: the material ability to bend
Coefficient of friction : the material ability to slip through tissues & ties
Knot Strength: force necessary to cause a given type of Knot to slip, partially or completely
Characteristics of suture material
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Tissue reaction characteristics:Inflammatory and fibrous tissue reaction
AbsorptionPotentiation of infectionAllergic reaction
Characteristics of suture material
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Classification of sutures
According to Absorption properties:
AbsorbableNon- absorbable
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AbsorbableSutures which are broken down &
eventually absorbed by either hydrolysis (Synthetic) or digested by lysosomal enzyme elicited by WBC’s (natural)
Mechanism Natural Attack &
break Down strands
Synthetic water gradually penetrate suture filaments & break down suture polymer chain
Lysosomal enzyme
Hydrolyzed
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Non- absorbable
material which tissue enzymes can’t dissolve, remains encapsulated when buried in tissues or removable post-op when used as skin suture
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According to number of stands
Poly-filament Mono-filament
Classification of sutures
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Mono-filament single strand of materialsingle strand of material HighHigh handling characteristics handling characteristics
(passes more smoothly through (passes more smoothly through tissues + tie down easily)tissues + tie down easily)
LessLess tissue reaction tissue reaction characteristics (resist harboring characteristics (resist harboring organisms which may cause organisms which may cause suture line infectionsuture line infection
HigherHigher chance of suture chance of suture breakagebreakage
LowerLower physical characteristics physical characteristics (lesser tensile strength, (lesser tensile strength, pliability &pliability & flexibility)flexibility)
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Poly-filament
several filaments or strands several filaments or strands twisted or braided together twisted or braided together
LowerLower handling handling characteristics characteristics
MoreMore tissue reaction tissue reaction characteristics characteristics
LowerLower chance of suture chance of suture breakagebreakage
HigherHigher physical physical characteristicscharacteristics
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Absorbable
RawMaterial
TensileStrength
Absorbtion Rate
TissReactivity
Hand-ling
Knot Security
Me-mory
Color& C/I
CollagenBeefFlexorTendon
0 % 7-10 days1-2
weeksMod.FairPoorLow-
Allergy to collagen or chromium
CatgutSheepIntestine
0%at 7- 10 days
5-7Weeks
Mod.HighFairPoorLow
Yellowish brown blue dyed
Allergy to collagen or chromium
Vicryl(polyglactin910)
Copolymer lactide & glycolide coated with polyglactin370 + calcium stearate
50% at 2-3 weeks
60-90daysLowGoo
dFairLow
UndyedViolet
Where extended approximate of tissues is needed
Monocryl (poliglecapone25)
Copolymer of glycolide & epslim-caprolactone
50% at 1wk. 20-30% at 2wk. lost at 3wk.
90-120daysLow
Good
FairLowUndyed
Where extended approximate of tissues is needed
Dexon(polyglycolic acid)
Polyglycolic acid 1st synthetic(1970)
50% at 2-3 weeks
90-120daysLowFairGoodLow
Dyed green
Where extended approximate of tissues is needed
PDS II(polydioxanone)
Polydioxanone
70% at 2wks50% at 4wks25% at 6wks
180-210 days
LowFairPoorHighClearviolet
Heart valve prosthesis
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Non-Absorbable
Raw Material
TensileStrength
Absorbtion Rate
Tissue Reactivity
Handling
Knot Security
Memory
Color & Material
C/I
SilkOrganic proteinCalled Fibroin (silk)
GoodGradual encapsulation by Fibrous C.T
HighGood
GoodPoorBlack
White
Allergy to Silk
Dermalon EthilonMonosof (nylon)
Long chain aliphatic polymers nylon 6
GoodGradual encapsulation by Fibrous C.T
LowPoorPoorHighClear
Black
Permanent tensile strength retention needed
Prolene-Surgilene surgipro
Isotactic crystalline stereoisomer of polypropylene
HighNonabs-orbableLowPoorPoorHigh
Clear
Blue
Not Known
Novafilpolybutester
HighGradual encapsulation by Fibrous C.T
LowFairPoorLowClear
Blue
Not Known
Ethibond Mersilene Dacron Ti-cron
Polyester polyethylene terephthalate
HighGradual encapsulation by Fibrous C.T
Mod.Good
GoodFairClear
Dyed
Not Known
Stainless steel suture
316 LStainless steel
HighNonabs-orbableLowPoorGoodPoor
SilverMetallic
Allergy to 316 LSteel
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PRINCIPLES OF SUTURE SELECTION
When a wound has reached maximal strength, sutures are no longer needed
Foreign bodies in potentially contaminated tissues may convert contamination to infection
Where cosmetic results are important, close and prolonged apposition of wounds and avoidance of irritants will produce the best results
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PRINCIPLES OF SUTURE SELECTION
Foreign bodies in the presence of fluids containing high
concentrations of crystalloids may act as a nidus for precipitation and
stone formation
Use the finest suture size that match with the natural strength of the
tissue
The composition and properties of a suture are the crucial elements in
the decision of what type to use
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SELECTING THE SUTURE MATERIAL
Ligatures Coated VICRYL, MERSILK, NUROLON, Catgut:3/0-0
Skin VCRL* rapide, ETHILON, Undyed MONOCRYL,PROLENE: 6/0-2/0
Subcuticular Undyed MONOCRYL, Coated VICRYL, clear PDSII, PROLENE with beads & collars: 4/0-2/0
Fascia under Tension PROLENE, ETHILON, PDSII: 2/0-1Muscle Coated VICRYL, Dyed Monocryl, PDSII, Catgut:: 3/0-
2
Stomach/Bowel Coated VICRYL, Dyed MONOCRYL, PDSII: 3/0-1Tendons PROLENE, ETHIBOND /EXCEL, Stainless
Steel Wire, PDSII: 3/0-1
Blood Vessels PROLENE, ETHIBOND EXCEL: 8/0-2/0Oculoplastic VICRYL* rapide, MONOCRYL, ETHILON, Plain Catgut: 5/0-6/0
Cornea/Sclereal ETHILON, Monofilament VICRYL, MonofilamentMERSILENE: 11/0-9/0
Nerves ETHILON: 10/0-5/0
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Surgical NeedleSurgical Needle
variation in needle geometries are variation in needle geometries are just as important as variation in just as important as variation in suture sizes & that needle suture sizes & that needle dimensions must be compatible dimensions must be compatible with suture sizes, allowing the two with suture sizes, allowing the two to work in tandem “to work in tandem “
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Needle AnatomyNeedle Anatomy
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Needle AnatomyNeedle Anatomy
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Type of needleType of needle
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NeedleNeedle AttachmentAttachment EndEnd
Eyed needle Eyed needle Needle threaded Needle threaded
with the suture with the suture strand strand
2 strands should 2 strands should be passed to be passed to tissues tissues
more penetrationmore penetrationmore tissue more tissue
disruptiondisruption
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Needle Attachment EndNeedle Attachment End
Swaged (atraumatic)Swaged (atraumatic)Handling & preparation are Handling & preparation are
minimized, this maintains the minimized, this maintains the integrity of suture strandintegrity of suture strand
Minimal tissue trauma Minimal tissue trauma Do not unthread prematurelyDo not unthread prematurelyIf a needle is accidentally If a needle is accidentally
dropped into cavity, the dropped into cavity, the attached suture strand make it attached suture strand make it easier to findeasier to find
Inventory & time spent cleaning, Inventory & time spent cleaning, sharpening & sterilizing sharpening & sterilizing reusable eyed needles is reusable eyed needles is eliminated eliminated
It eliminates suture fraying or It eliminates suture fraying or damage due to sharp corners damage due to sharp corners in the eye of eyed needlein the eye of eyed needle
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NeedleNeedle PointPoint
Cutting NeedlesCutting NeedlesConventional cutting Conventional cutting
needle:needle:Narrow point, fine wire Narrow point, fine wire
diameter, fine taper diameter, fine taper ratio ratio superior superior penetration of soft penetration of soft tissuestissues
Inside/outside curvatures Inside/outside curvatures of body flattens in the of body flattens in the grasping area grasping area great great stability in the needle stability in the needle holderholder
reduces Flattened sides reduces Flattened sides bending bending
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• Reverse cutting needle:Reverse cutting needle:– A skin, tendons, A skin, tendons,
ligaments, oral, ligaments, oral, nasal, pharynx nasal, pharynx needleneedle
– more strength than more strength than similar sized similar sized conventional cutting conventional cutting
– the danger of tissue the danger of tissue cut out is greatly cut out is greatly reduced reduced
– The hole left by the The hole left by the needle leaves a wide needle leaves a wide wall of tissue against wall of tissue against which the suture is which the suture is to be tiedto be tied
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Side cutting (spatulaSide cutting (spatula):):For ophthalmic For ophthalmic
procedures procedures It separated or splits It separated or splits
through the thin through the thin layers of scleral or layers of scleral or corneal tissue & corneal tissue & travel within the travel within the plane below themplane below them
Maximum ease of Maximum ease of penetration + penetration + greater control of greater control of needle needle
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Blunt Point NeedleBlunt Point NeedleTaper body in Taper body in
rounded blunt point rounded blunt point that will not cut that will not cut through tissuethrough tissue
It dissect friable It dissect friable tissue rather than tissue rather than cutting itcutting it
Used for blunt Used for blunt dissection, kidney, dissection, kidney, intestine, liver, intestine, liver, fascia, spleen, fascia, spleen, cervix (ligating cervix (ligating incompetent Cx)incompetent Cx)
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Suture classification
Natural Synthetic
Absorbable Non-Absorbable
Collagen (plain, chromic)
Catgut(plain, chromic)
Silk
cotton
Absorbable Non-Absorbable
Monofilament Monofilament
•Maxon•(polyglyconate)
PDS II(polydioxanone)
Monocryl
(poliglecaprone)
Multifilament
Dexon(polyglycolic acid)
Vicryl rapide(polyglactin910)
Dermalon-Ethilon-Monosof
(Nylonpolyamide)
*prolene-Surgilene-Surgipro(Polypropylene)
*Novafil(Polybutester)
Multifilament
*Ethibond-Dacron-Mersilene-tocron(Polyester)
Stainless steel
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ThankThank youyou