Patent Issued for Cannulated trephine (USPTO 12023047).

A patent has been issued for a cannulated trephine, a tool used for forming bone and cartilage tunnels and harvesting tissue. The inventors identified a need for a tool that can effectively cut both bone and cartilage without causing significant localized heating. The trephine described in the patent has a tubular shape with a drive shaft for torque transmission and a cutting tooth. It also includes a guide bushing and a pushrod for guidance and tissue collection. The patent provides detailed descriptions and claims for different embodiments of the trephine. [Extracted from the article]