Medicament delivery device

Patent metadata

Field	Value
Publication number	US-9662448-B2
Application number	US-201314385162-A
Country	US
Kind code	B2
Filing date	Mar 7, 2013
Priority date	Mar 16, 2012
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

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 ).

First claim

The invention claimed is:

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.

Assignees

• Carebay Europe Ltd

Inventors

• Holmqvist Anders

Classifications

• A61M2205/8281

  spring operated · CPC title

• A61M2205/60

  with identification means · CPC title

• A61M2205/59

  Aesthetic features, e.g. distraction means to prevent fears of child patients · CPC title

• A61M2005/202

  cocking means, e.g. to bias the main drive spring of an injector · CPC title

• A61M5/31583

  based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod · CPC title