Owen Mumford Limited

Andrew Hung

Matthew John Dobson

Abiodun Falodi

Andreas Artelsmair

Robert Dutton

Marco Caglio

Matthew David Farmer

Tahir Shabudin

Oliver Gould

Kuiwei Zhang

Daniel Garson

Disclosed is an auto-injection apparatus for receiving a syringe, including: an outer casing enclosing a drive assembly and a syringe carrier configured to hold a barrel of the syringe, the syringe carrier being forward of the drive assembly and having stowed and delivery positions; an interlock extending between the syringe carrier and a syringe carrier housing at least partially surrounding the syringe carrier, the interlock preventing forward motion of the syringe carrier under the influence of an insertion actuator whilst in the stowed position. The drive assembly includes the insertion actuator for inserting a needle of the syringe into an injection site and a delivery actuator for driving a plunger into a barrel of the syringe which contains a substance for injection. The syringe carrier includes an interlock release mechanism which is configured to release the interlock such that the insertion actuator drives the syringe carrier forward.

Injection apparatus

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.

An autoinjector including a plunger for engaging with the bung, a collar located around the plunger, an insertion spring biasing the collar relative to the rear of the device, and a delivery spring biasing the plunger relative to the collar. The device further includes a stop feature defining the limit of axial movement of the syringe body through the housing, and a collar release mechanism for releasing the collar from the rear of the device to commence insertion and a plunger release mechanism for releasing the plunger from the collar while substantially preventing rearward axial movement of the collar, following insertion, to commence delivery of the medicament. Following release of the plunger from the collar, the plunger is configured to move axially and rotationally relative to the collar, the direction of rotation being changed one or more times with axial movement of the plunger.

Growing community of inventors

Oxfordshire, United Kingdom

Andrew Hung