Patent ID: 7798988

Claim:
A device for back injecting an implant into the skin of a subject, said device including: (a) a hollow main body to which a hollow needle is fixed, into which the implant is introduced; (b) a secondary body coaxially arranged inside the main body and surrounding the hollow needle, wherein the secondary body is capable of retracting inside the main body; (c) a piston rod capable of sliding coaxially inside the hollow needle; (d) first means for allowing the piston rod to maintain position unchanged with respect to the hollow needle when the device is pressed against the skin of the subject to allow the hollow needle to penetrate the subject's skin when the secondary body retracts inside the main body, and the first means allows the piston rod to penetrate inside the hollow needle to hold the implant at a required depth in the subject's skin while the hollow needle is withdrawn from the subject's skin during which the secondary body exits the main body; and (e) means for elastically returning the secondary body out of the main body, wherein the elastic return means controls exit of the secondary body outside of the main body, wherein the elastic return means automatically releases itself thereby bringing the secondary body to surround again the hollow needle.