Crystalline THROBIO PLLA Polymer Medical Grade Poly-L-Lactic Acid Biodegradable

• Product Description: Medical-grade PLLA (Poly-L-Lactic Acid) is a premium biodegradable crystalline polymer specifically developed for regenerative medical aesthetic filling and anti-aging treatment. As a classic long-acting regenerative filler, it focuses on endogenous skin rejuvenation rather than simple physical filling. The product consists of high-purity PLLA microspheres with uniform particle size, which can stably exist in subcutaneous tissue, continuously induce collagen regeneration, and gradually improve facial sagging, hollowing and aging problems. It delivers natural, progressive and long-lasting anti-aging effects, with no rigid foreign body sensation after molding, widely applicable to clinical facial contouring and whole skin rejuvenation.
• Product Features: PLLA has a highly ordered crystalline molecular structure, featuring high structural rigidity, strong supporting force and excellent shape retention, which is far superior to amorphous polymer fillers. It adopts pure natural lactic acid raw materials, with ultra-high purity and zero heterologous impurities, owning ultra-low sensitization and excellent human tissue compatibility. It has a unique dual-effect characteristic of "immediate filling support + delayed collagen regeneration", realizing layered anti-aging and contour optimization. With slow, uniform and controllable in-vivo degradation, it will not cause sudden volume shrinkage or local collapse. The whole metabolic process is safe and stable, with long effective duration and extremely low granuloma incidence, suitable for long-term clinical aesthetic maintenance.
• Technical Principle: PLLA is synthesized from single L-lactic acid monomers through ring-opening polymerization, forming a regular and ordered crystalline molecular chain structure. After subcutaneous injection, the high-stability PLLA microspheres can provide continuous three-dimensional mechanical support for soft tissue. Relying on mild and uniform ester bond hydrolysis in the human physiological environment, PLLA microspheres degrade slowly and stably. During the degradation process, it continuously stimulates the activity of dermal fibroblasts, activates skin self-repair and regeneration mechanisms, and promotes massive proliferation of autologous collagen. Finally, the polymer is completely metabolized into lactic acid, carbon dioxide and water, realizing residue-free metabolism, and forming stable and natural facial contour supported by autologous collagen.
• Production Process: Medical-grade PLLA adopts strict full-process sterile medical production standards, completed in Class 100 dust-free constant-temperature sterile workshop. High-purity natural L-lactic acid monomers are selected and subjected to multi-stage refining, dehumidification and impurity removal to eliminate trace moisture and invalid impurities. Precise constant-temperature and constant-pressure catalytic ring-opening polymerization is carried out to synthesize high-molecular-weight crystalline PLLA raw materials with uniform molecular chain distribution. After multiple devolatilization, deep purification and catalyst removal processes, residual harmful substances are completely removed. Finally, precise microsphere screening, sterile proportioning and vacuum sealing packaging are performed to ensure stable particle size, consistent molecular weight and ultra-high safety of finished products.

Core Technical Parameters