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Related Flashcards
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Cards In This Set
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Suture
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Material used to ligate blood vessels or approximate tissue; holds tissue in place during healing
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Ligature
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Strand of suture material that is used to tie off blood vessels
prevent bleeding isolate tissue while it is being excised |
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Suture characteristics
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Physical configuration
capillarity diameter elasticity tensil strength memory |
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Physical configuration of sutures
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Monofilament - single strand
multifilament - many strands |
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Capillarity
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Ability to soak up fluid along a strand
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Diameter
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Distance across, given in mm
expressed in USP sizes with zeroes smaller size has less zeroes (i.e. 2-0) |
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Knot tensile strength
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The force measured in pounds that a suture strand can withstand before it breaks while knotted
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Elasticity
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The ability to regain original form and length after being stretched
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Memory
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The tendency of a suture to recoil to it's original shape during packaging
higher memory results in less knot security |
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Pliability
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Easily bends
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Coefficient of Friction
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The ability to glide through tissue and retain a knot
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2 main classifications of sutures
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absorbable
non absorbable |
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Absorbable suture
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Derived from the collagen of healthy animals or synthetic polymer; can be digested, hydrolized and/or assimilated by tissue during healing
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Non-absorbable suture
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Derived from natural or synthetic material
no change to the suture during healing becomes encapsulated or must be removed |
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2 types of natural absorbale sutures
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Surgical gut
collagen |
