| 摘要 |
A safety needle accessory is provided for the prevention of needle stick injuries. The safety needle accessory includes a hollow needle, a hub surrounding a base of the hollow needle, a sleeve surrounding the hub, and a elastically deformable member. The sleeve is slidable to a first, a second and a third position in which the sleeve fully or partially covers the needle. In addition, the safety needle accessory includes a pack having a removable cap. The cap is removable from the pack while a remainder of the pack remains mounted over the needle, hub and sleeve. The cap is removed from the pack at a position such that removal of the cap exposes a sharp end of the needle, but not the sleeve, when the sleeve is in the intermediate position. |
| 主权项 |
1. A safety needle accessory comprising:
a hollow needle having a base end and a sharp end, a hub, surrounding the base end of the needle, having a connector for connection to an injection device, a sleeve, surrounding the hub, slidable relative to the hub in an axial direction, the sleeve including a face for skin contact, an elastically deformable member, and a pack, comprising a cap, a main part, and a frangible connection that frangibly connects the cap and the main part, wherein the cap covers the sharp end of the needle and the main part includes an open end exposing the connector of the hub, the pack being releasably mounted over the needle, the hub and the sleeve, and completely removable from the needle, the hub and the sleeve, wherein the sleeve is slidable in a first axial direction from a first position in which the needle is fully or partially covered by the sleeve to a second position in which the needle is exposed, via an intermediate position between the first and second positions in which the sharp end of the needle projects from the sleeve, and in a second axial direction from the second position to a third position in which the needle is fully covered by the sleeve, wherein the deformable member is deformed by the sleeve sliding from the first position to the second position and the force for sliding the sleeve from the second to the third position is provided by elastic energy stored in the deformable member, and wherein, when the sleeve is in the intermediate position, the frangible connection is positioned such that when the cap is removed from the main part, the sharp end of the needle is exposed but the sleeve is not exposed, and, therefore, the sleeve is shielded by the main part from sliding movement upon contact of the sharp end of the needle with the skin, and when the pack is removed from the needle, the hub and the sleeve, the sleeve is slidable between the first, intermediate, second and third positions thereof. |
