Syringes - Ritract Syringe
Significant innovation resulted in a patented product that after a single use, the inner barrel and needle retract inside the main barrel of the syringe and are securely locked in place, thus preventing needle stick injury and re-use of the syringe.
Key technical challenges that were overcome in the prototyping stage included:
- Unique limit catch design preventing premature retraction of the needle during the pre-fill stroke;
- The engagement of moulded flexible fingers on the barrel that upon the injection stroke, reverses the one-way lock mechanism to allow needle retraction at the same time preventing forward needle movement.
The technology developed by Wickham has been successfully applied across all sizes (ml) of syringes.