Cierta - Tandem T:slim Cartridge Filling Tool by Ayuda Life

Shop more from  


Cierta is designed specifically to assist with the insulin filling process for the Tandem t:slim X2 cartridge.

If you or someone you love has experienced challenges with dexterity or vision changes and uses the Tandem t:slim X2, this product will help:

  • Provide accuracy to align the needle with the cartridge fillport.
  • Provide stability during the cartridge filling process.
  • Improve safety by reducing the chance of a needle poke.
  • Save time by taking the guesswork out of finding your fillport. 

Store Policies