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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 ...
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.
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.
Tensile testing, also known as tension testing, [1] is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure. Properties that are directly measured via a tensile test are ultimate tensile strength , breaking strength , maximum elongation and reduction in area. [ 2 ]
It is also known as the strength-to-weight ratio or strength/weight ratio or strength-to-mass ratio. In fiber or textile applications, tenacity is the usual measure of specific strength. The SI unit for specific strength is Pa ⋅ m 3 / kg , or N ⋅m/kg, which is dimensionally equivalent to m 2 /s 2 , though the latter form is rarely used.
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.
Monocryl has a low tissue reactivity, maintains high tensile strength, and has a half-life of 7 to 14 days. 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 ]
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]