ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,230, issued on Feb. 17, was assigned to TERUMO K.K. (Tokyo).

"Medical device" was invented by Yuichi Tada (Santa Clara, Calif.), Yoichiro Kuwano (Tokyo) and John Barritt (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A medical device that removes an object in a body lumen, includes a rotatable drive shaft, an outer tube that accommodates the drive shaft and is rotatable independent of the drive shaft, a cutter attached to a distal portion of the drive shaft for cutting the object, a first housing that accommodates a proximal portion of the drive shaft and has an outer surface including a first groove that extends around a rotation ...