ut ical ▁companies ▁and ▁research ers ▁have ▁begun ▁to ▁study ▁and ▁implement ▁polym ers ▁such ▁as ▁F ib ro in , ▁a ▁sil k - based ▁protein ▁that ▁can ▁be ▁m old ed ▁into ▁structures ▁like ▁mic r one ed les ▁and ▁dissol ved ▁once ▁in ▁the ▁body . ▁ ▁Adv antages ▁ ▁There ▁are ▁many ▁advantages ▁to ▁the ▁use ▁of ▁mic r one ed les , ▁the ▁most ▁prominent ▁being ▁the ▁improved ▁comfort ▁of ▁patients . ▁Need le ▁ph ob ia ▁can ▁affect ▁both ▁adult s ▁and ▁children , ▁and ▁sometimes ▁can ▁lead ▁to ▁f ain ting . ▁The ▁benefit ▁of ▁mic r one ed le ▁arrays ▁is ▁that ▁they ▁reduce ▁anx iety ▁that ▁patients ▁have ▁when ▁confront ed ▁with ▁a ▁hyp od erm ic ▁need le . ▁In ▁addition ▁to ▁impro ving ▁psych ological ▁and ▁emot ional ▁comfort , ▁mic r one ed les ▁have ▁been ▁shown ▁to ▁be ▁substantial ly ▁less ▁pain ful ▁than ▁conventional ▁in jections . ▁Some ▁studies ▁recorded ▁children ' s ▁views ▁on ▁blood ▁sampling ▁with ▁mic r one ed le ▁and ▁found ▁patients ▁were ▁more ▁willing ▁when ▁prompt ed ▁with ▁a ▁less ▁pain ful ▁procedure ▁than ▁traditional ▁sampling ▁with ▁need les . ▁Mic r one ed les ▁are ▁benef icial ▁to ▁phys icians ▁as ▁well ▁since ▁they ▁produce ▁less ▁ha z ard ous ▁waste ▁than ▁need les ▁and ▁are ▁generally ▁easier ▁to ▁use . ▁Mic r one ed les ▁are ▁also ▁less ▁expensive ▁than ▁need les ▁as ▁they ▁require ▁less ▁material ▁and ▁the ▁material ▁used ▁is