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Syringe Systems

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

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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 autoinjector device requirements and enhancing the overall patient experience.

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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 12.7 mm length and the innovative 8 mm length. This design further reduces the frictional potential of the needle, thereby decreasing the required injection force. 

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Needle configuration

CONFIGURATION IN DIFFERENT VISCOSITIES (cP)
Needle lenght 12.7 mm 12.7 mm 8 mm
Gauge Special-TW TW Special-TW
25G > 30 cP
27G 10 – 30 cP ≤ 15 cP > 15 cP
29G ≤ 10 cP -
Available
Under Development

Features

  • 37A_Needle Sizes

    Needles: 25G, 27G and 29G, ½’’​ and 8mm

  • 37C_Special Thin Wall Needle

    Larger internal diameter, but standard external dimensions

  • 94_Syringe with Needle

    Syringe formats: 1ml long and 2.25ml

  • 36B_Syringe Closure_RNS

    Available Closures: RNS FM30, 4900GS

  • 429_Nexa+Alba Syringes

    Platforms: Nexa® and Alba®

  • 27_Superior Gliding Performance

    Excellent gliding performance for both manual and auto-injector applications

Gliding_force_test

sTW Needles guarantee an excellent gliding performance for both manual and autoinjector 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. 

As shown in the graphs, the sTW needle registers an improved gliding force compared to the standard thin-wall needle as the viscosity of the solution increases, thus confirming that the sTW optimizes the delivery of highly viscous drug formulations avoiding the use of bigger gauges.

Gliding force test on 27G TW and 27G special TW needles_250mm
Gliding force test on 27G TW and Special TW_100mm

Discover all the details of sTW Needle in the brochure

Find more on the product range and advantages of sTW needle

Download now

Other syringe systems

Alba<sup>®</sup> Syringes

Alba® Syringes

Nexa<sup>®</sup> Syringes

Nexa® Syringes

Fina<sup>®</sup> Syringes

Fina® Syringes

Dual-Chamber Syringes

Dual-Chamber Syringes

Integrated Tip Cap (ITC)

Integrated Tip Cap (ITC)

GAQ_stw_needle

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