US 10,376,638 B2
Fluid delivery device needle retraction mechanisms, cartridges and expandable hydraulic fluid seals
Steven F. Levesque, North Pembroke, MA (US); Geoffrey H. Jenkins, Wayland, MA (US); Robert L. Standley, Acton, MA (US); Matthew P. Johnson, Boylston, MA (US); and Daniel A. Dube, Jr., Putnam, CT (US)
Assigned to VALERITAS, INC., Bridgewater, NJ (US)
Filed by Valeritas, Inc., Bridgewater, NJ (US)
Filed on Sep. 6, 2017, as Appl. No. 15/696,646.
Application 15/696,646 is a division of application No. 14/259,897, filed on Apr. 23, 2014, granted, now 9,795,735.
Application 14/259,897 is a division of application No. 13/156,839, filed on Jun. 9, 2011, granted, now 8,740,847, issued on Jun. 3, 2014.
Claims priority of provisional application 61/353,004, filed on Jun. 9, 2010.
Prior Publication US 2017/0361016 A1, Dec. 21, 2017
Int. Cl. A61M 37/00 (2006.01); A61M 5/00 (2006.01); A61M 5/158 (2006.01); A61M 5/32 (2006.01); A61M 5/142 (2006.01)
CPC A61M 5/158 (2013.01) [A61M 5/14248 (2013.01); A61M 5/322 (2013.01); A61M 5/3232 (2013.01); A61M 5/3234 (2013.01); A61M 2005/14252 (2013.01); A61M 2005/1586 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A cartridge for use with a fluid delivery device comprising:
a septum;
a piston; and
a container sealed at a distal end by the septum and sealed at a proximal end by the piston forming a fluid reservoir there between having a pressure, the septum configured to be pierced in a radial direction by a delivery needle, the septum configured to slide distally with respect to the container in a longitudinal direction upon insertion of the cartridge into the fluid delivery device causing the piston to be displaced distally so that the fluid reservoir shifts distally relative to the container to enable insertion of the cartridge into the fluid delivery device prior to engagement with the delivery needle and without changing the pressure of the fluid reservoir.