Easier, comfortable diabetic treatment

Needle-free injections made possible with polycarbonate

Easier, comfortable diabetic treatment

Diabetic treatment often requires painful injections, yet for more than 114 million Chinese patients, needle-free injection can be a viable therapy for diabetes and effective blood glucose control.¹

Needle-free injection technology developed by QS Medical Technology Co., Ltd.


To meet the needs of a growing number of diabetes patients, QS Medical Technology Co., Ltd. (QS) developed a new needle-free injection technology. These high-quality injectors make life easier and more comfortable for millions of patients in China and around the world.


The needle-free injector’s plastic drug-delivery components and ampoule bottle require a material that can achieve strength, toughness, precision molding stability and radiation sterilization resistance.


Featuring durability, processability and design flexibility, Makrolon® Rx1805 polycarbonate from Covestro met QS’ needs for producing the insulin-delivery interface and molding the medication ampoules. This medical-grade polycarbonate ensures that the drug-delivery component can consistently puncture through the plug of an insulin ampoule. It also allows for the drug-sampling needle and the protective cover of the drug suction apparatus to be injection molded in one shot.

Case Profile






Needle-free injectors

Makrolon® polycarbonate – the versatile, state-of-the-art plastic with phenomenal material properties

  • Makrolon® Rx1805 polycarbonate is biocompatible according to ISO 10993-1 test requirements, meaning it is tested for human contact.
  • This grade of polycarbonate offers excellent impact resistance.
  • Featuring a high lipid resistance, Makrolon® Rx1805 polycarbonate is not easily damaged by lipids.
  • This medical-grade polycarbonate is acceptable for sterilization, or disinfection, with high-energy radiation.
  • Makrolon® Rx1805 polycarbonate offers accuracy in molding size and remains stable under different application environments.
Find out more about Makrolon®

¹: 2017 IDF Diabetes Atlas - 8th Edition

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