ALEXANDRIA, Va., May 12 -- United States Patent no. 12,622,838, issued on May 12.

"Massage device" was invented by Qian Liu (Changde, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The massage device includes a housing, a massage portion, at least one swing arm and a driving device, where the massage portion is slidably arranged on the housing, and the massage portion includes a first pinching portion and a second pinching portion that are oppositely arranged and made of flexible materials, such that a massage cavity is provided between the first pinching portion and the second pinching portion. A first end of the at least one swing arm is arranged in at least one of the first pinching portion and the ...