Every manufacturer uses different terminology to describe their needles. The Braun system uses two letters to describe the needle shape followed by a number indicating the length of the needle.
Reverse Cutting Needle. The triangular, reverse cutting needle is intended for suturing tough tissue. The three edges run over the entire length of the needle, and give the needle holder a firm grip.
Needle-Suture Combinations by B. Braun.
3/8-Circle Reverse Cutting Needle.