초록 ▼

The invention provides a injection device for administering an injectable product, including a base section adapted to receive a container from which a product dose is dispensed through a needle by displacement of a piston in the container, and a drive unit including a driven member, a drive element

The invention provides a injection device for administering an injectable product, including a base section adapted to receive a container from which a product dose is dispensed through a needle by displacement of a piston in the container, and a drive unit including a driven member, a drive element and a damping arrangement, the drive unit for applying a force to advance the piston in the container to dispense a dose, wherein the damping arrangement generally counteracts the drive force and counter forces. The invention also encompasses a needle safety sleeve and a blocking structure for use with injection devices.

대표청구항 ▼

[ What is claimed is:] [1.]1. A device for administering an injectable product, comprising:a) a base section;b) a container arranged in the base section from which a product dose is dispensed through a needle by displacement of a piston associated with the container;c) a drive unit, comprising a dri

[ What is claimed is:] [1.]1. A device for administering an injectable product, comprising:a) a base section;b) a container arranged in the base section from which a product dose is dispensed through a needle by displacement of a piston associated with the container;c) a drive unit, comprising a driven member and a drive element, the drive element applying a drive force on said driven member upon actuating the drive unit, by which drive force on said drive member said driven member is displaced in the direction of the piston, thus advancing said piston within said container; andd) a chamber open to the atmosphere for creating a damping force, wherein a portion of the driven member forms at least one wall of the chamber, said chamber comprising a port open to the atmosphere for allowing air to flow in and out of said chamber, whereby, when advancing said driven member the chamber changes in volume, said port allowing for a delayed pressure compensation accompanying the change in volume thereby creating the damping force, said damping force interacting with the drive force and counter forces associated with the use of the device.