The needle is automatically retracted directly from the patient into the barrel of the syringe when the plunger handle is fully depressed. The pre-removal, automated retraction greatly reduces exposure to the contaminated needle, effectively reducing the risk of needlestick injury.
According to a leading COVID-19 vaccine maker, using a syringe with a dead space of 35 microliters or less allows access to an additional dose from a 5-dose vial. Our VanishPoint 1mL Low Dead Space safety syringe meets that criterion, allowing for an extra dose that otherwise would be wasted. We received multiple reports from clinicians stating that they were able to draw additional doses from multi-dose vials.