In over 30 years of performing liposuction, I have personally never punctured an internal organ. In the hands of a board certified plastic surgeon, this risk is extremely low. It is not zero, but it is very low. As mentioned by another doctor, hernias are usually viewed as a contra-indication to the liposuction (meaning don't do it).
Unfortunately there are other practitioners out there doing various forms of liposuction. They often emphasize the machine, rather than the doctor performing the operation. As someone once said, does anybody know what type of chisel Michaelangelo used? Best of luck.