Covidien 88862854-33 4-0 Ti-Cron 1X18" White P-21 BX/12 • Model: 88862854-33 • Brand: Ti-Cron • Suture Size: 4-0 • Length: 1X18" • Color: White • Material/Composition: Coated Briaded Polyester • Non-Absorbable  • Needle Name: P-21 • Needle Color: Silver • Needle Length: 9mm • Needle Point Type: Taper Point Cutting • Specialty: Edgellant This Ti‑Cron™ 4‑0 suture (with P‑21 reverse cutting needle) is engineered for surgeons needing a durable, non‑absorbable suture that maintains strength and holds up under the stresses of soft tissue repair. Being braided polyester, it offers good knot security and flexibility, while the silicone coating smooths passage through tissue and helps reduce friction and “drag” during suturing. The premium reverse cutting needle (P‑21) has sharper edges—beneficial when working with tougher tissues or in instances where clean, precise incisions are important. The ½‑circle curvature and 9 mm length make it useful in confined or deeper surgical spaces where control and angle are critical. One of its defining features is permanence. Because it is nonabsorbable, once placed, it remains in tissue indefinitely unless removed. That makes this suture well‑suited for cases where long‑term mechanical support is required: such as in cardiac valve procedures, tendon repairs, and other high‑stress sites. The braided polyester construction resists stretch (i.e., has low creep) and offers high knot security, meaning the knots maintain their tightness over time. The silicone coating helps with handling — knots can be tied more securely and glide more smoothly, improving surgeon ease and reducing time comparing to uncoated braided sutures. On the other hand, because of its permanence, there are trade‑offs. Nonabsorbable material means that if infection or tissue reaction occurs, the suture remains unless surgically removed. Also, while the braided form is strong and handles well, braided polyester tends to have more tissue “drag” than monofilament sutures, which might influence healing or irritation in sensitive tissues. The sharp reverse cutting needle is great for penetrating tissue, but it can also increase the risk of cutting too aggressively if not used carefully. In practice, the choice of suture involves matching tissue type, required duration of support, patient factors (e.g. risk of sensitivity or infection), and surgeon preference. This product is prized when those priorities favor long‑term strength, durability, and reliable handling in more demanding surgical situations. This medical supply or implant item is securely packaged within its original manufacturer's packaging, which remains undamaged. The inner and outer packaging is intact, ensuring the product's integrity and suitability for medical use.