An adjustable shape changeable surgical implant system comprises a shape changeable surgical implant (1) having a swelling body (2) adapted to absorb and release fluid to swell and shrink, respectively, thereby changing the shape of said implant (1), a selective receptor (3) anchored inside the swelling body (2) and configured to selectively bind a corresponding selective ligand (4), a shape control substance (5) which can be administered to a patient carrying the shape changeable surgical implant (1), wherein the shape control substance (5) comprises the selective ligand (4) as well as a hydrophilic substance (6) connected to the ligand (4), such that in response to the selective receptor (3) binding the selective ligand (4), the swelling body absorbs liquid through hydrophilization, thereby changing the shape of the implant (1).
