Instrument for placing spheres of biomaterial in bone cavity comprises hollow cylindrical body with guide rod and piston

摘要

Instrument comprises a hollow cylindrical body (10) with a filling end (24), a guide rod (50) with an end plug (56) and a piston (30) with an axial bore. The end plug is shaped to be retained inside the hollow body until pressure is applied to biomaterial spheres (72) inside the body by the piston sliding over the guide rod and inside the body. Instrument comprises a hollow cylindrical body (10) with a filling end (24), a guide rod (50) with an end plug (56) and a piston (30) with an axial bore. The end plug is shaped to be retained inside the hollow body until pressure is applied to biomaterial spheres (72) inside the body by the piston sliding over the guide rod and inside the body. The pressure forces the plug from the end of the body, dispersing the spheres inside the bone cavity.