Medicament delivery device
The present invention relates to a medicament delivery device comprising a housing ( 10 ), which housing ( 10 ) is arranged ranged to accommodate a medicament container ( 16 ), the device further comprises a drive mechanism ( 18 ) capable of, upon activation, expel a dose of medicament from said medicament container, the drive mechanism comprising a flat spiral spring ( 26 ). The invention is characterized in that at least a part ( 36 ) of an outermost turn of said flat spiral spring ( 26 ) is positioned on an outer surface of said housing ( 10 ).
1. A medicament delivery device, comprising:
an elongated outer housing configured for accommodating a medicament container; and
a drive mechanism configured for expelling a dose of medicament from the medicament container upon activation, wherein the drive mechanism includes a flat spiral spring having a predetermined number of turns, an outermost turn has an outer end connected directly to the elongated outer housing, at least a majority of the outermost turn is positioned on an outer surface of the elongated outer housing, and the outermost turn runs along a circumference of the outer surface of the elongated outer housing.
2. The medicament delivery device of claim 1 , wherein the outer end includes an attachment device that coincides with the outer surface.
3. The medicament delivery device of claim 2 , wherein the attachment device comprises at least one rivet.
4. The medicament delivery device of claim 2 , wherein the attachment device comprises at least one screw.
5. The medicament delivery device of claim 2 , wherein the attachment device comprises at least one nut and at least one bolt.
6. The medicament delivery device of claim 2 , wherein the attachment device comprises glue.
7. The medicament delivery device of claim 1 , wherein the outer surface of the elongated outer housing includes a circumferential groove or seat configured for accommodating the outermost turn.
8. The medicament delivery device of claim 1 , wherein the part of the outermost turn is visible.
9. The medicament delivery device of claim 1 , wherein the elongated outer housing includes an opening, through which the flat spiral spring runs.
10. The medicament delivery device of claim 9 , wherein the outer end includes an attachment device that coincides with the outer surface.
11. The medicament delivery device of claim 10 , wherein the attachment device comprises an edge of the opening, and the outer end is formed around the edge.
12. The medicament delivery device of claim 10 , wherein the attachment device comprises at least one rivet.
13. The medicament delivery device of claim 10 , wherein the attachment device comprises at least one screw.
14. The medicament delivery device of claim 10 , wherein the attachment device comprises at least one nut and at least one bolt.
15. The medicament delivery device of claim 10 , wherein the attachment device comprises glue.
16. The medicament delivery device of claim 10 , wherein the part of the outermost turn is visible.