Injectors Report Favorable Ergonomics With HA Filler Syringe Add-on
Key Takeaways
- In a simulated-use study of 30 aesthetic healthcare professionals in China and Korea, an investigational add-on backstop and reinforced plunger rod for hyaluronic acid (HA) filler syringes received high user-reported injection experience, comfort, and ergonomics scores.
- Mean injection experience scores ranged from 8.6 to 8.9 of 10, while mean comfort scores ranged from 5.3 to 5.4 of 6 with needle and cannula use.
- The study evaluated subjective, immediate user experience rather than clinical outcomes or objective biomechanical measures, limiting conclusions about performance in clinical practice.
A simulated-use study found that aesthetic healthcare professionals reported high levels of comfort, satisfaction, and perceived ergonomics when using an investigational add-on device designed for prefilled hyaluronic acid (HA) filler syringes.
Study researchers evaluated a redesigned backstop and reinforced plunger rod intended to address some of the physical demands associated with HA filler injections. The study included 30 aesthetic healthcare professionals in China and Korea who had a mean 8.6 years of aesthetic practice. Participants performed simulated facial HA filler injections on training models using the investigational add-on with both needles and cannulas.
Investigators assessed injection and aspiration experience using visual analogue scales and evaluated comfort, ergonomics, overall satisfaction, and qualitative feedback. Participants also completed a separate exploratory comparison between the investigational device and a standard backstop/plunger-rod configuration using a needle.
Aesthetic Injectors Rate HA Filler Syringe Ergonomics
With the investigational device, mean injection experience scores ranged from 8.6 to 8.9 of 10; mean comfort scores ranged from 5.3 to 5.4 of 6 across needle and cannula use. Mean perceived ergonomics was 5.5 of 6. Qualitative feedback frequently cited grip stability and reduced perceived needle-tip movement during aspiration.
The study did not assess objective biomechanical outcomes or use under actual patient-care conditions.
“In this simulated-use late formative study, experienced aesthetic healthcare professionals reported high perceived user experience, comfort, and perceived ergonomics with the investigational add-on device,” the authors wrote in the abstract. “These findings should be interpreted as immediate subjective user feedback and require confirmation in studies using objective biomechanical measures and clinical-use conditions.”
Source
Combedazou A, et al. Clinical, Cosmetic and Investigative Dermatology. 2026. Doi:10.2147/CCID.S641470.