MEMS MICROPUMP WITH PIEZOELECTRIC VALVE IN UNACTUATED STATE THAT REMAINS CLOSED FOLLOWING MICROPUMP POWER LOSS

Abstract: a mems device for a device for delivering medicament to a user, the mems device comprising: a first port and a second port to enable medicament to flow through the mems device; first and second wafers that define a cavity therebetween that communicates with the first and second ports, thereby creating a fluid path for a flow of the medicament from the first port to the second port, the first wafer configured as a membrane adapted to deform, the cavity including a first chamber that communicates with the second port; a first valve section including a first valve seat around the first port; and a first piezoelectric actuator layered on the first wafer and configured to cause the membrane to deform and close off the first valve seat, thereby preventing fluid flow through the first port.

Inventor(s): Laurence Heads, Jacob Menture

CPC Classification: A61M5/14224 (DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals ; means for inserting tampons ; devices for administering food or medicines orally ; containers for collecting, storing or administering blood or medical fluids ); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery ; chemical aspects of surgical articles ); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents )})

Search for rejections for patent application number 20250161559