Dose control device for injectable-drug delivery devices

Inventors

MARCOZ, Alain • Pereira, Alexandre • POLLARD, Mathieu

Assignees

Biocorp Production SAS

Abstract

Dose control device for a handheld pen-type injectable-drug delivery device, the handheld pen-type injectable-drug delivery device comprising an elongate body with a proximal and distal extremity, a longitudinal axis extending from the proximal extremity to the distal extremity, and a rotatable dose setting wheel located at the proximal extremity, wherein the dose control device comprises a magnetic field producing mechanism located at the proximal extremity of the elongate body; one or more magnetic field sensors in communication with a data processing unit located on an outer surface of, or inside, the elongate body; and a clutch assembly configured to selectively move the magnetic field producing mechanism from a first, engaged, position, to a second, disengaged, position.

Core Innovation

The disclosed invention provides a dose control device for a handheld pen-type injectable-drug delivery device that includes an elongate body having a proximal and distal extremity and a longitudinal axis, with a rotatable dose setting wheel located at the proximal extremity. The dose control device comprises magnetic field producing means located at the proximal extremity, one or more magnetic field sensors in communication with a data processing unit located at the elongate body, and a clutch assembly configured to selectively move the magnetic field producing means between a first engaged position and a second disengaged position.

The clutch assembly includes a cylindrical body having a longitudinal inner bore and a proximal extremity, with the magnetic field producing means located within the bore. The cylindrical body is removably mounted in axial longitudinal alignment around the rotatable dose setting wheel, with an annular wall extending within and along the bore towards the proximal extremity of the cylindrical body, and the cylindrical body is configured to be co-rotatable with the dose setting wheel.

A cylindrical holder or bore arrangement is described in which the holder is configured to co-rotate with the dose wheel in an engaged position and to prevent rotation in a disengaged position, while allowing distal separation for injection. Actuation is described using a clutch activation button and a pre-constrained biasing member positioned to bias the clutch assembly, and selective engagement and disengagement is described via a magnetic field producing means holder interface including engageable clutch teeth in an embodiment.

Claims Coverage

The partial content provides one independent claim. It contains at least three main inventive aspects: magnetic field producing means with magnetic field sensors and a data processing unit, a clutch assembly that selectively moves the magnetic field producing means between engaged and disengaged positions, and a cylindrical body and mounting arrangement enabling co-rotation of the cylindrical body with the rotatable dose setting wheel while locating the magnetic field producing means within the cylindrical bore.

Overall, the independent claim centers on a magnetic-field-based dose control device in which sensors and a data processing unit interact with magnetic field producing means, while a clutch assembly with a removably mounted cylindrical bore structure selectively couples and decouples co-rotation between the rotatable dose setting wheel and the magnetic field producing means.

Stated Advantages

Documented Applications