ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,396,750, issued on Aug. 26, was assigned to The Regents of the University of California (Oakland, Calif.).
"Adjustable stepped cannula" was invented by Krystof S. Bankiewicz (Oakland, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The use of stepped cannulas, wherein a step structure creates a backstop to reduce backflow along the cannula body, is known for convection enhanced delivery of agents to the brain and other structures within an animal. Described herein are novel and improved stepped cannula designs wherein the length of the cannula segment between the step and the dispensing outlet is variable and can be controllably adjusted inside th...