Backflow Prevention Mechanism for Drug Delivery Device
Summary
USPTO granted Amgen Inc. Patent No. US12594379B2 for a backflow prevention mechanism in drug delivery devices. The patent covers a valve system that restricts fluid flow during needle insertion and permits flow at a later stage during medicament delivery. The invention includes five claims covering the valve mechanism, fluid flow connections, and needle insertion components.
What changed
USPTO granted Amgen Inc. Patent No. US12594379B2 for a backflow prevention mechanism in drug delivery devices. The patent covers a valve system with a fluid flow connection and needle insertion mechanism that restricts fluid flow during needle insertion and permits flow during medicament delivery. The five claims protect the valve's dual-position functionality, fluid flow connection, and integrated needle insertion components.
Affected parties should monitor for potential licensing opportunities or challenges. Competitors developing similar drug delivery devices with backflow prevention mechanisms may need to evaluate freedom-to-operate considerations. Medical device manufacturers and pharmaceutical companies utilizing drug delivery systems should assess whether this patent affects their product development roadmaps.
What to do next
- Monitor for potential licensing opportunities
- Review for freedom-to-operate implications
Archived snapshot
Apr 8, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Backflow prevention mechanism for drug delivery device
Grant US12594379B2 Kind: B2 Apr 07, 2026
Assignee
AMGEN INC.
Inventors
Tohid Pirbodaghi, Paul Daniel Faucher, Joshua Tamsky, Scott Robert Gibson, Sheldon B. Moberg, Jeff Lind
Abstract
A drug delivery device includes a housing, a container disposed in the housing, an activation mechanism, a needle insertion mechanism, a fluid flow connection, and a valve in fluid communication with the fluid flow connection and the needle insertion mechanism. The container has an inner volume to contain a medicament which is urged out of the container by the activation mechanism. The needle insertion mechanism is adapted to insert a needle and/or a cannula to deliver the medicament from the container via the fluid flow connection. The valve is in fluid communication with the fluid flow connection and needle insertion mechanism, and is movable between first and second positions. Upon insertion of the needle and/or the cannula, the valve remains in the first position whereby fluid flow is restricted. At a later time, the valve is urged to the second position whereby fluid may flow through the needle or cannula.
CPC Classifications
A61M 5/16813 A61M 5/158 A61M 5/3287 A61M 2005/1585 A61M 2005/3128 A61M 2005/1406 A61M 5/1582 A61M 39/26 A61M 5/16881 A61M 2005/14252 A61M 5/14248
Filing Date
2020-09-09
Application No.
17637507
Claims
5
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