With inspiration from the original Sun Lee´s practice disc for microsurgery training for beginners (see Lee_et_al-1983-Microsurgery) and the Practi-rings (see Anastomosis device_MD) from Ren Remie Surgical Skill Center (https://www.rrssc.eu/) we designed a new version of this training tool.

The major difference is that the rubber membrane is fastened without creating any tension in the membrane and this allows complex patterns to be cut without distorsions

The microRING consists of two 3D-printe parts an O-ring and a thin stainless steel ring. The top and bottom parts are screwed together clamping the rubber membrane between the O-ring and the stainless stell ring.

The image above show a screen shot from Spaceclaim that was used for designing the suturing ring that was then 3D printed using a Formlab 2 printer. The green parts are the bottom and top 3D printed parts, the black ring is the O-ring and the blue ring is the thin stainless steel ring.