Patent ID: 8021323

Claim:
An apparatus for needle-free injection of a soft tissue augmentation material into the skin of a patient, which comprises: a main body comprising a chamber for containing the soft tissue augmentation material; a drive mechanism for exerting forces on the soft tissue augmentation material in said chamber to expel the soft tissue augmentation material; and a nozzle having a first end and a second end, the first end being connected to the main body and said second end located distal to said main body; and a plurality of interchangeable spacers of different sizes each being connectable to the second end of the nozzle, including a relatively thin spacer and a relatively wide spacer, wherein the relatively thin spacer, when connected to the second end of the nozzle, facilitates deposit of dermal filler material relatively deeply within the skin and the relatively wide spacer, when connected to the second end of the nozzle, facilitates deposit of dermal filler material relatively less deeply within the skin and wherein each of the spacers is connected to each other spacer.