Owen Mumford Limited

Andreas Artelsmair

Andrew Hung

Abiodun Falodi

Daniel Garson

Robert Dutton

Marco Caglio

Matthew John Dobson

An apparatus for a firing mechanismfor use in an injection deviceand comprising: a rear caphaving an elongate memberextending axially forwards when installed within the injection device; a plungerreleasably connected, directly or indirectly, to the elongate member and, upon release of the connection to the elongate member, axially displaceable in a forward direction; and a plunger driverto drive the plunger axially forwards upon release of the connection to the elongate member, wherein the plunger and the rear cap define an axial length of the assembly, which in turn determines a start position of a forward end of the plunger before release of the connection to the elongate member, and wherein, during construction of the assembly, the plunger is releasably connectable, directly or indirectly, to the elongate member at one of a plurality of positions for controlling the axial length of the assembly.

Injection device fill volume management

An injection device including: a body including a syringe locator for receiving a syringe; and a firing mechanism including a rear cap, a plunger configured to be axially displaced in a forward direction relative to the rear cap and a driver system for driving the plunger forwards upon activation of the injection device, the firing mechanism configured to be directly or indirectly connected to the body such that an axial spacing of the rear cap and a barrel of the syringe is fixed during operation of the injection device, wherein, the firing mechanism and/or the body include first and second connection features allowing adjustment of a relative axial position of the firing mechanism and the syringe locator during assembly of the injection device.

An apparatus for a firing mechanism for use in an injection device and including: a rear cap having an elongate member extending axially forwards when installed within the injection device; a plunger releasably connected, directly or indirectly, to the elongate member and, upon release of the connection to the elongate member, axially displaceable in a forward direction; and a plunger driver to drive the plunger axially forwards upon release of the connection to the elongate member, wherein the plunger and the rear cap define an axial length of the assembly, which in turn determines a start position of a forward end of the plunger before release of the connection to the elongate member, and wherein, during construction of the assembly, the plunger is releasably connectable, directly or indirectly, to the elongate member at one of a plurality of positions for controlling the axial length of the assembly.

Disclosed is an injection device including a body for receiving a syringe, a firing mechanism including a reaction component, a plunger configured to be axially displaced in a forward direction relative to the reaction component, and a drive spring located between the reaction component and the plunger for driving the plunger forwards upon activation of the injection device, wherein the reaction component provides a reaction surface for the drive spring. The device further includes a locking mechanism for locking the reaction component in a first axial position within the body, the locking mechanism being configured to release the reaction component upon a predefined forward movement of the plunger thereby allowing the reaction component to be driven in a rearward axial direction by the drive spring until it impacts against the body or a component secured to the body to thereby emit an audible indication of an end of dose.

Growing community of inventors

Oxfordshire, United Kingdom

Andreas Artelsmair