US 11,690,957 B2
Safety-enhanced needle-free injector
Ping Derg Chuang, Singapore (SG); and David Samuel Leon Chuang, Singapore (SG)
Assigned to MIRACLE MANAGEMENT PTE LTD, Singapore (SG)
Appl. No. 16/346,374
Filed by MIRACLE MANAGEMENT PTE LTD, Singapore (SG)
PCT Filed Oct. 31, 2017, PCT No. PCT/SG2017/050546
§ 371(c)(1), (2) Date Apr. 30, 2019,
PCT Pub. No. WO2018/080402, PCT Pub. Date May 3, 2018.
Claims priority of application No. 10201609111W (SG), filed on Oct. 31, 2016.
Prior Publication US 2020/0046902 A1, Feb. 13, 2020
Int. Cl. A61M 5/30 (2006.01); A61M 5/20 (2006.01); A61M 5/24 (2006.01)
CPC A61M 5/30 (2013.01) [A61M 5/2053 (2013.01); A61M 5/24 (2013.01); A61M 2005/2013 (2013.01); A61M 2205/3331 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A safety-enhanced needle-free injector system comprising:
a housing;
a bolt carrier with one or more springs held at a first end and having a firing chamber formed therein from the one or more springs to an opening at a second end opposite the first end, wherein the bolt carrier further includes a spring-driven member coupled to the one or more springs and located in the firing chamber;
an ampoule coupleable to the bolt carrier, the ampoule having a compartment for storing an injectable for needle-free delivery and a seal for driving the injectable out an opening at a first end of the ampoule, wherein a plunger couples between the spring-driven member and the seal when a second end of the ampoule opposite the first end of the ampoule is coupled to the bolt carrier to allow the spring-driven member to engage the seal for driving the injectable along a length of the ampoule from the second end of the ampoule to the first end of the ampoule and out the opening at the first end of the ampoule, the opening at the first end of the ampoule comprising one or more orifices;
a user-sensible safety mechanism having safety cues for providing safety-enhanced needle-free injection of the injectable, the safety cues comprising a pressure-sensed, tactile-sensed or visual-sensed mechanism, said pressure-sensed, tactile-sensed of visual-sensed mechanism including a protruding ring positioned within the housing, said protruding ring selectably positioned within the housing to prevent inadvertent user activation of the needle-free injector system; and
a textured pattern positioned within an inner surface of the housing, said textured pattern configured to set a state of the needle-free injector system to one or more predetermined states in response to one or more predefined movements of one of the housing, the bolt carrier and the ampoule relative to one another corresponding to one or more finite state machine mechanical computer (FSMMC) programmed instructions.