Injection device with passive RF modulation for data transmission
Summary
The USPTO granted Patent US12597499B2 to Sanofi on April 7, 2026, covering an injection device with a passive RF modulation system. The patent claims an RF antenna attached to the device's reservoir that receives interrogation signals from external devices and a resonating assembly that generates modulated RF signals reflecting plunger rod position for usage tracking.
What changed
Sanofi received a patent grant for an injection device system incorporating passive RF technology to transmit usage data. The invention comprises a drug reservoir with a tubular side, a movable plunger rod, an RF antenna for receiving interrogation signals from external devices, and a resonating assembly configured to generate modulated RF signals based on plunger rod position. The system enables tracking of injection device usage without active power sources.
Manufacturers of electronic injection devices or drug delivery systems incorporating connectivity features should review this patent to assess potential licensing requirements or design considerations. The passive RF approach may offer competitive advantages in smart drug delivery systems by eliminating the need for onboard power sources for data transmission.
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Archived snapshot
Apr 7, 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.
Transmission of data associated with an injection device usage using passive RF modulation
Grant US12597499B2 Kind: B2 Apr 07, 2026
Assignee
Sanofi
Inventors
Matthias Felber, Nathanael Wettstein, Felix Kramer
Abstract
Implementations of the present disclosure are directed to an injection device including: a reservoir including a wall defining a proximal end, a distal end and a tubular side, a plunger rod configured to be movable within the reservoir in a direction from the distal end to the proximal end, a radio frequency (RF) antenna attached to the tubular side and configured to receive an interrogation signal from an external device, and a resonating assembly configured to receive the interrogation signal from the RF antenna and to generate a modulated RF signal having a frequency associated with a position of the plunger rod.
CPC Classifications
A61M 5/31511 A61M 5/31566 A61M 2005/3125 A61M 2205/3389 A61M 2205/3592 A61M 2205/3561
Filing Date
2023-08-14
Application No.
18449028
Claims
23
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Source
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