| 摘要 |
S P E C I F I C A T I O N "Improvements in or Relating to Injection Devices" An accessory for an injection device comprises a protective sleeve for surrounding the needle and having inner and outer sleeve parts which are movable relative to one another from a contracted position, in which the point of the needle projects from the sleeve to enable an injection to be effected, to an extended position, in which the point of the needle is shielded by the sleeve. The sleeve parts are guided relative to one another by a projection on the inner sleeve part engaging within a track in the outer sleeve part. At least a portion of the track is formed by a slot extending through the wall of a collar which is separately formed from the remainder of the outer sleeve part and which is fitted within an end portion of the remainder of the outer sleeve part 5 when the accessory is assembled. Such an arrangement provides for ease of fabrication and assembly. (Figures 1 and 2) |
