ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,485,219, issued on Dec. 2, was assigned to Amgen Inc. (Thousand Oaks, Calif.).

"Drug delivery devices with partial drug delivery member retraction" was invented by Ali Nekouzadeh (Simi Valley, Calif.), Carl Conrath (Thousand Oaks, Calif.), Scott Robert Gibson (Simi Valley, Calif.) and Basel Hasan Taha (Simi Valley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, devices, and components are provided to reduce tissue resistive pressure during a subcutaneous drug delivery operation by increasing the size of the injection cavity by partially retracting the drug delivery member after inserting the drug delivery member to a subcutaneous position...