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Monofilament synthetic absorbable suture, prepared from the polyester, poly (p-dioxanone). Composition: Natural purified collagen: Natural purified collagen: Polyglycolic acid: Polyester and poly (p-dioxanone) Adsorption rate and tensile strength: Strength retention for at least 7 days. Maintains strength for 10–14 days [2] 84% at 2 weeks, 23 ...
Tensile strength: the ability of the suture to hold tissues in place without breaking. Elasticity: the ability of the suture material to adapt to changing tissues such as in cases of edema. Tissue reactivity: inflammatory response of the surrounding tissue that can cause materials to break down quicker and lose tensile strength.
Elderly, anemic and malnourished patients may absorb the suture more quickly. Its color is either violet or undyed and it is sold in sizes USP 6-0 (1 metric) to USP 2 (5 metric). It has the advantages of high initial tensile strength, smooth passage through tissue, easy handling, excellent knotting ability, and secure knot tying.
In practice, Vicryl comes braided, dyed or undyed with the following decay schedule: 75% at two weeks, 50% at three weeks, and 25% at four weeks (i.e., the sutures retain that proportion of tensile strength at those dates). [citation needed]
Catgut suture in a vintage glass dispenser. Catgut suture is a type of surgical suture made of twisted strands of purified collagen taken from the small intestine of domesticated ruminants or beef tendon. It is naturally degraded by the body's own proteolytic enzymes. Full tensile strength remains for at least 7 days, and absorption is complete ...
The ultimate tensile strength of a material is an intensive property; therefore its value does not depend on the size of the test specimen.However, depending on the material, it may be dependent on other factors, such as the preparation of the specimen, the presence or otherwise of surface defects, and the temperature of the test environment and material.
At 1 week, its in vivo tensile strength is at 50–60% undyed (60–70% dyed), 20–30% undyed (30–40% dyed) at two weeks, and essentially completely hydrolyzed by 91–119 days. [3] When removed from the package, it has a high degree of "memory", or coil. It is slippery, making it easier to pass than a braided suture.
The end-result is a fiber with a high degree of molecular orientation, and therefore exceptional tensile strength. Gel spinning depends on isolating individual chain molecules in the solvent so that intermolecular entanglements are minimal. Entanglements make chain orientation more difficult, and lower the strength of the final product. [11]