Automatic injection device

Abstract

The present invention relates to a device (1) for automatic injection of a product (3) into an injection site (4). The device comprises: a housing (8) for the container, the container being movable relative to the housing between an initial position, in which a tip of the needle does not extend beyond a distal end of the housing and in which the container is in one of a passive state and an active state, to an insertion position, distally spaced relative to the initial position and in which the tip of the needle extends beyond the distal end of the housing, movement of the container out of its first position being prevented when the container is in its passive state, and being permitted when the container is in its active state, and a safety shield (10) coupled to the housing (8) for movement between a first position and a second position in which the tip of the needle does not extend beyond a distal end of the shield, movement of the shield (10) out of its first position placing the container (5); in its active state, the shield (10) being movable to its second position when the container (5) is in the insertion position, the shield (10) being secured against proximal movement when in the second position, and a needle shield (2) coupled with said housing and covering the needle prior to use of said device, removal of said needle shield being with limited or no rotation of said needle shield.

Description

technical field [0001] The present invention relates to a device for the automatic injection of a product, in particular for self-injection, in a very safe manner. [0002] In this application, the distal end of a component or device is understood to mean the end furthest from the user's hand, and the proximal end is understood to mean the end closest to the user's hand. Also, in this application "distal direction" is understood to mean the direction of injection and "proximal direction" is understood to mean the direction opposite to the direction of injection. Background technique [0003] Some diseases necessitate regular (eg daily) injections of medicines or products. To simplify treatment, certain auto-injectors have been provided to allow patients to administer the injections themselves. [0004] Of course, since the patient is neither a nurse nor an educated person in medical devices, the self-injector must prove to be simple to use and very safe. In particular, t...

AI Technical Summary

Problems solved by technology

Otherwise, the patient could accidentally stab himself or worse, he or she could reinsert the needle at the second injection site, achieving an improper injection of the remaining product

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