ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,019, issued on May 20, was assigned to Shenzhen Ya Bei Kang Technology Co. Ltd (Shenzhen, China).
"Replacement brush head and oral hygiene device" was invented by Xiaoli Ruan (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a replacement brush head, comprising: a bristle head, a housing, a transmission shaft and a tail cover, the transmission shaft is arranged inside the housing, and the bristle head is arranged in a transmission manner at a top end of the housing through the transmission shaft, and the tail cover is arranged at a tail end of the housing. The replacement brush head and oral hygiene devic...