ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,034, issued on May 26, was assigned to TERUMO K.K. (Tokyo).

"Medical device" was invented by Kosuke Nishio (Irvine, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A medical device that reduces stress concentration on a part of a drive shaft and has stable rotation and durability. The medical device that removes an object in a body lumen includes: a rotatable drive shaft; a driving portion configured to apply torque to a proximal portion of the drive shaft and having a specified rated rotation direction; a cutting portion fixed to a distal portion of the drive shaft and configured to cut the object; an outer tubular shaft rotatably accommodatin...