Абстракт

Objectives: With over 3.5 million dermal filler procedures worldwide each year, every needle still represents a risk to be mitigated. Since typical injection areas for fillers are highly vascularized, puncturing and injecting into a blood vessel remains a concern for even experienced injectors. To mitigate that risk, we’ve developed a new “smart” Syrengy that can be fitted to a variety of needles or cannulas, this new injection targeting system promises to be a significant advance for many different practitioners — and a competitive advantage for many injectable products. Introduction: Based on an innovative mathematical fluid mechanics model, we have developed a smart syringe that allows safe and reliable blood aspiration in order to: - Avoid injection of products into vessels - Automatically control and optimize pressure/force combinations - Remove product residues from the needle with a neutral liquid - Combine 2 varied materials simultaneously or sequentially Materials / method: We performed in vitro aspiration experiment using syringes and commonly used needle sizes (27G, 29G). We measured the time to observe a blood being aspirated through the needle with HA filler. Intervals longer than 10 seconds were considered as false results. We added an innovative approach of flashing a saline solution through the needle with a filler prior to aspiration. Saline solution pressurized by a syringe plunger opens a fluid path in the needle and enables the successful and efficient aspiration in 1-2 seconds through smallest needle size for 6 commercials HA filler. Results: Aspiration was possible only in few trials with HA fillers for the 27G and all false for 29G needle, respectively. The aspiration with the novel saline flashing procedure is successful for 100% of cases with the two commonly used HA fillers and all needle sizes. The time to aspiration is also significantly shorter with the saline flashing. Conclusion: The saline flashing of the dermatological needles with HA fillers appeared to be a feasible and efficient solution for the 100% safe aspiration safety test. In vitro evaluation of aspiration of viscous hyaluronic acid (HA) fillers through dermatologic needles, with and without a new solution for safe aspiration with a saline flashing procedure. The final objective is to be able to offer an easy-to-use device for a practitioner who injects fillers under and into the skin blindly. This device aims to protect him from an immediate and reproducible intravascular venous or arterial injection whate