| 摘要 |
The invention relates to a system for injecting a fluid through or into human skin, optionally by needle-free injection or by injection with a needle, comprising (A) a single-use syringe (10) comprising an ampule body (12) forming a chamber for accommodating the fluid to be injected, arranged within the chamber, an axially displaceable, sealingly guided ampule piston (16) and an external taper (18) of a Luer cone at the distal end of the ampule body (12); (B) an adaptor (30) comprising an internal taper (32) of a Luer cone at the proximal end of the adaptor (30) and an exit aperture (36) for the fluid to be injected needle-free at the distal end of the adaptor (30) and (C) an autoinjector comprising a receptacle device (50) for the coupled and fluid-filled combination of a single-use syringe (10) and an adaptor (30), which is configured to maintain the form-fit between the single-use syringe (10) and the adaptor (30) and to support the ampule body (12) of the single-use syringe (10), distally arranged a skin coupler (52) which forms a skin contact surface (56) for needle-free injection through or into human skin, wherein the skin coupler (52) is rounded and has a centrally arranged nozzle opening (54) which is configured to be complementary to the exit aperture (36) of the adaptor (30) and accommodates the exit aperture (36) of the adaptor (30) flush with the nozzle opening (54) in the region of the skin contact surface (56) during needle-free injection, and an injection device which is configured to displace the ampule piston (16) axially according to a predetermined pressure profile.
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