The Allergan 468 was marketed as an "anatomical" implant, but did not prove very successful in achieving this outcome. I have found that most patients benefit form changing to round implants. You also might consider switching to silicone. You should be eligible for a credit when upgrading to silicone.
As always, there has been a fierce competition between the 2 leading American breast implant producers Mentor VS McGhan (aka Inamed, Allergan Natrelle). The 468 implant designed by Dr. John Tebbets of Dallas was popular then but gradually lost market share.
The best option is to contact the surgeon who operated on you or the facility in which it was done. Every state has different laws on medical record retention. Usually, 10 years for physicians longer for facilities. Your records WILL have the make and model as well as the serial number. Finding this out can save you a LOT of money since ALL these implants have a lifetime warranty; You get a FREE PAIR every time they leak. That would greatly reduce your cost of the surgery.
Peter Aldea, MD
In 2001, the only shaped saline device that was available in the United States was a style 468 Allergan. Hope this is helpful.
when dealing with deflated implants. Your chosen surgeon should be able to help you through this and see if any warranty coverage was available back then.
The teardrop 468 textured implant by Mcghan was used at that time. It was a popular implant but we have not used in a decade