The only disposable multi-injection autoinjector for 3ml cartridges. The Haselmeier Penlet is a fully automated, multi-dose, fixed dose injection device designed for use with a standard 3ml cartridge.

The Penlet features Haselmeier’s hidden needle design which hides the needle from the patient before and during injection. Pressing the clip on the pen causes the needle to automatically enter the subcutaneous tissue, followed by delivery of the fixed volume of the solution.


  • Multiple fixed dose injections
  • Hidden needle to overcome the fear of injection
  • Automatic needle insertion and injection for people with reduced dexterity
  • Easy to use
  • No dose adjustment required
  • Economical product with a cost per dose – less than a prefilled syringe

The applications of the Penlet include:

  • Penlet is suitable for injecting Enoxaparin (low-molecular-weight heparins) or deep vein thrombosis treatment.