Cartridge for dosage sensing

US11331429B2 · kind B2 · utility

Assignee

• Sanofi · FR

Inventors

• Michael Schabbach · Weinheim, DE
• Alexander Allerdings · Frankfurt am Main, DE
• Christoph Dette · Frankfurt am Main, DE
• Martin Otten · Frankfurt am Main, DE
• Christian Pommereau · Frankfurt am Main, DE
• Dietmar Hammen · Frankfurt am Main, DE
• Paul Jansen · Mannheim, DE
• Ulrich Brueggemann · Bound Brook Junction, US

Key dates

• Filing date: May 2, 2018
• Grant date: May 17, 2022
• Expiry date: Jan 6, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/3389
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An injection device is provided, comprising a cartridge configured to hold a volume of fluid, the cartridge having a proximal end and a distal end through which the fluid is dispensed; a first stopper disposed in the cartridge and configured to move from the proximal end toward the distal end to cause the fluid to be dispensed through the distal end of the cartridge; a second stopper disposed at the distal end of the cartridge, the second stopper including an aperture through which the fluid is dispensed; a reflector disposed at the distal end of the cartridge; and a transmitter and a receiver disposed in the first stopper, the transmitter configured to transmit one or more waves toward the reflector and the receiver configured to receive reflections of the one or more waves from at least the reflector.