US 11,712,521 B2
Injection nozzle for a needleless injection device
Christophe Auriel, Binges (FR); Patrick Alexandre, Gray (FR); Benoit Guichard, Dijon (FR); Jennifer Ascani, Sivry Ante (FR); and M. Abdel Tazibt, Bettancourt la Ferree (FR)
Assigned to CROSSJECT, Dijon (FR)
Filed by CROSSJECT, Dijon (FR)
Filed on Apr. 11, 2019, as Appl. No. 16/381,584.
Application 16/381,584 is a continuation of application No. PCT/FR2017/052701, filed on Oct. 2, 2017.
Claims priority of application No. 1659833 (FR), filed on Oct. 11, 2016.
Prior Publication US 2019/0231981 A1, Aug. 1, 2019
Int. Cl. A61M 5/30 (2006.01); A61M 5/20 (2006.01)
CPC A61M 5/3007 (2013.01) [A61M 5/2046 (2013.01); A61M 2205/8218 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A needleless injection device comprising:
a gas generator;
a plunger arranged to be actuated by the gas generator;
a reservoir configured to receive a fluid to be injected, the plunger configured to eject the fluid out of the reservoir; and
at least one injection nozzle fluidly connected to the reservoir and configured to guide the fluid out of the needleless injection device, the at least one injection nozzle comprising:
at least one monolithic outlet conduit configured to let the fluid pass when expelled, the at least one outlet conduit extending parallel to an injection axis, the at least one outlet conduit comprising:
a first conduit portion having a first section;
a second conduit portion integral with the first conduit portion and having a second section, the first section having a first fluid flow area that is larger than a second fluid flow area of the second section; and
a connecting portion between the first conduit portion and the second conduit portion, the connecting portion is inclined at an angle comprised between 70° and 90° with respect to the injection axis,
wherein the gas generator extends along an axis that is offset from the injection axis, and
wherein the needleless injection device further includes a cap mounted about the injection axis between a closure position in which the cap is locked on the needleless injection device and an open position in which access is allowed to the nozzle to carry out an injection, the cap including a passage at least partially receiving the at least one injection nozzle and closed by a removable disk.