Syringe Systems

Special Thin-Wall (sTW) Needle: Addressing the Rise of High-Viscosity Drugs for an Enhanced Injection Experience

As injectable drugs evolve, the challenge of delivering high-viscosity or high-volume formulations grows, requiring careful consideration of patient comfort. Our Special Thin-Wall (sTW) needles feature an enlarged internal diameter to optimize the delivery of highly viscous drug formulations without the need for larger needle gauge, meeting auto-injector device requirements and enhancing the overall patient experience.

Special Thin-Wall (sTW) Needle: A Larger Internal Diameter with Standard External Dimensions

Available in 25, 27 and 29 gauge, the needle with five-bevel tip is manufactured in stainless steel and has been designed to meet the requirements of Nexa® and Alba® syringes. sTW Needles are currently applicable to 1mL long and 2.25mL syringe formats. Our sTW needles are available in both the traditional 12.7mm length and the innovative 8mm length. This design further reduces the frictional potential of the needle, thereby decreasing the required injection force.

Needle configuration
Needle Length	12,7mm	12,7mm	8mm
Gauge	Special-TW	TW	Special-TW
25G	> 30 cP
27G	10 – 30 cP	≤ 15 cP	> 15 cP
29G	≤ 10 cP		-

Available

Under Development

Needles: 25G, 27G and 29G, ½’’ and 8mm
Larger internal diameter, but standard external dimensions
Syringe formats: 1ml long and 2.25ml
Available Closures: RNS FM30, 4900GS
Platforms: Nexa® and Alba®
Excellent gliding performance for both manual and auto-injector applications

sTW Needles Guarantee an Excellent Gliding Performance for Both Manual and Auto-injector Applications

To analyze the comparative performance of the special Thin-Wall (sTW) needles against standard Thin-Wall (TW), a series of tests were undertaken in-house, in our Technology Excellence Center.