▁best ▁toler ated ▁material ▁for ▁a ▁g astr ic ▁device , ▁with ▁far ▁fewer ▁ad hes ions ▁and ▁t issue ▁re actions ▁than ▁other ▁materials . ▁Nevertheless , ▁adjust ability ▁became ▁the ▁“ H oly ▁Gra il ” ▁of ▁these ▁early ▁pione ers . ▁ ▁Ad just able ▁bands ▁The ▁development ▁of ▁the ▁modern ▁adjust able ▁g astr ic ▁band ▁is ▁a ▁t ribute ▁both ▁to ▁the ▁vision ▁and ▁pers istence ▁of ▁the ▁early ▁pione ers , ▁particularly ▁Lub om yr ▁K uz m ak ▁and ▁a ▁sust ained ▁collabor ative ▁effort ▁on ▁the ▁part ▁of ▁bio - engine ers , ▁sur ge ons ▁and ▁scient ists . ▁ ▁Early ▁research ▁on ▁the ▁concept ▁of ▁band ▁“ ad just ability ” ▁can ▁be ▁trac ed ▁back ▁to ▁the ▁early ▁work ▁of ▁G . ▁Sz in icz ▁( A ust ria ) ▁who ▁experiment ed ▁with ▁an ▁adjust able ▁band , ▁connected ▁to ▁a ▁sub cut aneous ▁port , ▁in ▁animals . ▁ ▁In ▁ 1 9 8 6 , ▁Lub om yr ▁K uz m ak , ▁a ▁Ukrain ian ▁sur geon ▁who ▁had ▁em igr ated ▁to ▁the ▁United ▁States ▁in ▁ 1 9 6 5 , ▁reported ▁on ▁the ▁clin ical ▁use ▁of ▁the ▁“ ad just able ▁sil ic one ▁g astr ic ▁band ” ▁( AS GB ) ▁via ▁open ▁surg ery . ▁K uz m ak , ▁who ▁from ▁the ▁early ▁ 1 9 8 0 s ▁had ▁been ▁searching ▁for ▁a ▁simple ▁and ▁safe ▁restrict ive ▁procedure