Owen Mumford has been granted a patent for a medicament delivery device that allows for the delivery of medication from a cartridge into an injection site through a cannula. The device includes a housing, a drive mechanism, and a connection arrangement with a hub and spring for opening the cartridge’s outlet. The device also features an operating member with a shield that can be moved to expose the cannula, triggering the hub to move into the connected configuration. GlobalData’s report on Owen Mumford gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Owen Mumford, wearable drug delivery devices was a key innovation area identified from patents. Owen Mumford's grant share as of September 2023 was 41%. Grant share is based on the ratio of number of grants to total number of patents.

A medicament delivery device with a movable shield for exposing the cannula

Source: United States Patent and Trademark Office (USPTO). Credit: Owen Mumford Ltd

A recently granted patent (Publication Number: US11717611B2) describes a medicament delivery device designed to deliver medication from a cartridge into an injection site through a cannula. The device includes a housing for the cartridge, a drive mechanism with a movable drive element to expel the medication upon activation, and a connection arrangement with a hub and spring for establishing a fluid flow connection between the cartridge and the cannula. The device also features an operating member with a shield that can be moved to expose the cannula, triggering the hub to move into the connected configuration.

The delivery device includes a contact face parallel to the drive axis for contact with the injection site during medication delivery. A compression spring is used in the connection arrangement, and a control mechanism holds the connection arrangement in the unconnected configuration until the operating member is activated. The shield is removable from the housing to expose the cannula, which is a hypodermic needle. The device also includes a cartridge and can hold a medicament.

The cartridge can be moved with respect to the housing to switch the connection arrangement from the unconnected to the connected configuration, with the spring biasing the cartridge in the forward direction. The drive element is biased for movement in the forward direction and is equipped with a drive spring. The hub is movable with respect to the housing and is engaged with a coupling element at the cartridge's outlet end. The hub includes clips for engagement with the coupling element and a sealing element release member for opening the outlet.

The delivery device features a trigger component that activates the drive mechanism, and a trigger element blocks the operation of the drive mechanism until released. A latch arrangement holds the drive element in an initial position, and a latch release formation associated with the trigger component releases the latch arrangement. The device also includes a cannula holder that extends the cannula into the injection site and a flexible tube for fluid connection between the hub and the cannula holder.

The cartridge includes a first container with a first chamber for a substance, a second container with a second chamber, a valve, and a stopper. A mixing element, such as a plunger, causes displacement of the second substance into the first container during a mixing stroke. The drive element moves to the second container to expel the mixed substances from the first chamber. The device includes a clamp arrangement to secure the drive element to the second container and a latch mechanism to hold the mixing element in an initial position.

Overall, this patent describes a medicament delivery device with various features and mechanisms to ensure accurate and controlled delivery of medication to an injection site.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.