Patient Experiences With Injection Needles

"Various types of needles with different designs and mechanical properties.~Five marketed needles are included: NovoFine 28G x 12 mm (Novo Nordisk A/S, Denmark), NovoFine 30G x 6 mm (Novo Nordisk A/S, Denmark), NovoFine 32G tip x 6 mm (Novo Nordisk A/S, Denmark), BD Ultra-Fine 32G x 4 mm Pentapoint (Beckton, Dickinson \& Company, USA), and Terumo Nanopass 34G x 5 mm (Terumo, Japan).~Ten needles have been exclusively manufactured for this clinical trial by Hart Needles, USA. These needles vary in diameter, number of needle tip grinding, and angles of grindings.~Three needles have been modified from the original (NovoFine 32G x 6 mm) with lack of lubrication or damaged needle tip for simulations of repeated use.~No drugs are injected. Only the needle insertion is evaluated."