ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,156, issued on Jan. 27, was assigned to TERUMO K.K. (Tokyo).
"Medical device" was invented by Takashi Kitaoka (San Jose, Calif.) and Yuki Masubuchi (Cupertino, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A medical device includes an expansion portion that rotates to break-up an object and that is prevented from receiving excessive force. The expansion portion is at a distal part of a shaft portion, a connection portion is fixed to a proximal part of the expansion portion, and an outer tube accommodates the shaft portion. The outer tube includes distal and proximal contact portions. The connection portion includes a first restricting portio...