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1. (WO2017153652) NEEDLELESS INJECTION DEVICE EQUIPPED WITH AN IMPROVED INJECTION NOZZLE

Pub. No.:    WO/2017/153652    International Application No.:    PCT/FR2017/050321
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Feb 14 00:59:59 CET 2017
IPC: A61M 5/30
Applicants: CROSSJECT
Inventors: STEINBERGER, Robin
VIVIEN, Gilles
Title: NEEDLELESS INJECTION DEVICE EQUIPPED WITH AN IMPROVED INJECTION NOZZLE
Abstract:
The invention relates to a needleless injection device having a body (12), which forms a receptacle extending axially from an upper radial seat along an injection axis, a gas generator, a tubular reservoir (24) which contains an active principle and which extends axially in said receptacle from an upper end as far as a lower end, and a nozzle (28) for injecting the active principle (26), which nozzle (28) is arranged at the lower end of the reservoir (24) and has an outer thread (72) designed to be screwed onto a complementary female thread (74) formed by the body (12), the injection device (10) being characterized in that the thread (72) of the nozzle (28) has overall a triangular cross section, said thread (72) being delimited by an upper face, which has a first angle with respect to a radial axis perpendicular to the injection axis (B), and a lower face, which has a second angle with respect to said radial axis, and in that the first angle is greater than the second angle.