Breast augmentation
The modern prosthetic breast was invented in 1961, by the American plastic surgeons Thomas Cronin and Frank Gerow, and manufactured by the Dow Corning Corporation; in due course, the first augmentation mammoplasty was performed in 1962. There are five generations of medical device technology for the breast-implant models filled with silicone gel; each generation of breast prosthesis is defined by common model-manufacturing techniques.
Breast augmentation
To emplace the grafts of autologous fat-tissue, doctors J. Newman and J. Levin designed a lipo-injector gun with a gear-driven plunger, which allowed the even injection of autologous fat-tissue to the desired recipient sites. The control afforded by the lipo-injector gun assisted the plastic surgeon in controlling excessive pressure to the fat in the barrel of the syringe, thus avoiding over-filling the recipient site. The later-design lipo-injector gun featured a ratchet-gear operation that afforded the surgeon greater control in accurately emplacing grafts of autologous fat to the recipient site; a trigger action injected 0.1 cm of filler. Since 1989, most non-surgical, fat-graft augmentation of the breast features the emplacement of adipocyte fat outside the breast parenchymaup to 300 ml of fatin three equal measures (aliquots), is emplaced to the subpectoral space and to the intrapectoral space of the pectoralis major muscle, and the submammary space, to achieve a breast outcome of natural appearance and contour.