US Patent Issued to INSULET on June 16 for "Low-friction rolling plunger for a wearable drug delivery device" (Massachusetts Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,187, issued on June 16, was assigned to INSULET Corp. (Acton, Mass.).

"Low-friction rolling plunger for a wearable drug delivery device" was invented by Soroush Kamrava (Everett, Mass.) and Daniel Allis (Boxford, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein are various embodiments of a pump mechanism comprising a rigid structure having an open end and a closed end, a plunger disposed in the open end of the rigid structure, and a flexible, fluid-proof sheet of material attached to an inner wall of the rigid structure and bonded to the head of the plunger such as to form a fluid barrier between the interior of the rigid struct...