ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,493, issued on Jan. 13, was assigned to SHL Medical AG (Zug, Switzerland).

"Drive assembly for a medicament delivery device" was invented by Gary Calderwood (Stockholm), Bjorn Krohn (Arsta, Sweden) and Joakim Lindholm (Saltsjo-Boo, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drive assembly for a medicament delivery device having a driver rotationally driven, an actuator sleeve, and a resilient blocking member that surrounds the driver and is arranged radially inside of the actuator sleeve, wherein the blocking member engages with the driver to prevent rotation of the driver relative to the blocking member, the actuator sleeve being confi...