US 10,376,653 B2
Medicament delivery device
Lennart Brunnberg, Tyresö (SE); Anders Wieselblad, Stockholm (SE); and Jonas Norebring, Stockholm (SE)
Assigned to SHL MEDICAL AG, Zug (CH)
Appl. No. 13/3,894
Filed by Lennart Brunnberg, Tyresö (SE); Anders Wieselblad, Stockholm (SE); and Jonas Norebring, Stockholm (SE)
PCT Filed Jun. 18, 2009, PCT No. PCT/EP2009/057550
§ 371(c)(1), (2), (4) Date Jan. 13, 2011,
PCT Pub. No. WO2010/006870, PCT Pub. Date Jan. 21, 2010.
Claims priority of application No. 0801692 (SE), filed on Jul. 15, 2008.
Prior Publication US 2011/0152781 A1, Jun. 23, 2011
Int. Cl. A61M 5/315 (2006.01); A61M 5/24 (2006.01); A61M 5/31 (2006.01); A61M 15/00 (2006.01); A61M 11/00 (2006.01); A61J 7/00 (2006.01); A61M 5/50 (2006.01)
CPC A61M 5/31566 (2013.01) [A61M 5/24 (2013.01); A61M 5/31 (2013.01); A61M 5/315 (2013.01); A61M 5/3129 (2013.01); A61M 11/007 (2014.02); A61M 15/0065 (2013.01); A61J 7/0053 (2013.01); A61M 5/31525 (2013.01); A61M 5/5086 (2013.01); A61M 2005/2407 (2013.01); A61M 2005/2488 (2013.01); A61M 2005/3125 (2013.01); A61M 2005/3126 (2013.01); A61M 2205/123 (2013.01); A61M 2205/6045 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A medicament delivery device, comprising:
a generally tubular distal housing part having opposite proximal and distal ends, wherein the proximal end of the distal housing part comprises a second fastener formed as a unitary, one-piece construction of an outer surface of the proximal end of the distal housing part and a third mechanically coded interface device located on an inner surface of the proximal end of the distal housing part;
a generally tubular proximal housing part having opposite proximal and distal ends and releasably connected to the distal housing part through mechanical engagement of the second fastener with a first fastener, where the first fastener is located on an inner surface of the distal end of the proximal housing part along with a fourth mechanically coded interface device also located on the inner surface of the distal end of the proximal housing part, and where the first fastener and the second fastener contact and cooperate with each other to result in a secure fastened connection between the distal housing part and the proximal housing part such that the distal and proximal housing parts are releasably locked together;
a medicament container having a slidable stopper, where the medicament container is arranged to be completely positioned and contained within the proximal housing part;
a drive mechanism comprising a plunger rod having a distal end, where the distal end of the plunger rod is completely contained and arranged within the distal housing part, the drive mechanism operably configured for driving a proximal end of the plunger rod from the distal housing part into the proximal housing part and into the medicament container to drive the stopper toward a proximal end of the medicament delivery device, where the distal end of the plunger rod remains within the distal housing part when the proximal and distal housing parts are disconnected and completely separated from each other; and
wherein an interface member is completely contained and arranged within both the distal and proximal housing parts when the distal and proximal housing parts are connected to each other, and wherein the interface member is not connected to the plunger rod, and forms no part of the drive mechanism, the interface member comprises first and second mechanically coded interface devices arranged to match and interact with the third and the fourth mechanically coded interface devices when the distal and proximal housing parts are connected to each other, wherein the interface member is releasably connected to both the proximal and distal housing parts; the first and second mechanically coded interface devices non-threadedly mate with the third and fourth mechanically coded interface devices to establish a geometrical and mechanical identification interface between the interface member and the proximal and distal housing parts that precludes use of an erroneous medicament container or medicament.