With 510k and ophthalmic approval across all major markets, STERiJECT ensures you can always demand the correct balance of penetration depth, gauge selection and flow to effectively deliver vision-saving therapies.
Explore by Focus
From the lab to the clinic, we've got you covered
STERiJECT's engineered consistency gives drug development a reliable constant from bench through clinic.
Learn more EngineeringSTERiJECT connects formulation to delivery-system engineering with a stable, scalable supply.
Learn more CareExplore our clinically proven solutions, engineered for low volume & viscous product delivery.
Learn moreEngineering
We engineer every part of the needle against your payload.



A standard hub can leave a meaningful share of a small dose behind. Our low-dead-space geometry reduces medication left in the hub, minimizing waste and supporting more accurate dose delivery.
Learn moreHard-polymer, externally threaded hubs and streamlined internal transitions resist pop-off and turbulence, keeping the connection secure as injection pressure rises.
Learn moreThin-wall design provides a larger internal diameter, helping reduce the force needed to inject viscous formulations without increasing the needle’s outer diameter.
Learn moreA precision bevel cuts penetration force, and a proprietary low-friction coating reduces drag through tissue for a more controlled, comfortable injection.
Learn moreUltra-fine gauges down to 34G, paired with tightly controlled short lengths, give the most delicate procedures a repeatable penetration depth.
Learn moreHub and contact materials are selected against your excipients, pH and sterilization route, so extractables, leachables and adsorption are engineered out early.
Learn moreOur products
VLDS, VHPC and VPRC all share a 27G to 34G gauge range, 2 to 13 mm lengths and FDA 510(k) clearance for intravitreal injections. What differs is the hub.
Availability, labeling, and regulatory status vary by product code and region.
Innovation
Some delivery challenges can't be addressed with an existing product.
TSK International brings clinical insight, engineering, quality and manufacturing experience together to help evaluate the delivery path. If the needle your formulation needs does not exist, we will build it.

Next step
Choose a clinical pathway, review the product and evidence information, or contact TSK International to discuss a specific ophthalmic delivery need.