摘 要: | Subdcrmalimplantisanewlongacting,levonorgestrelreleasingcontraceptivedevice,whichhasbeendevelopedduringthepast20years.Ithastheadvantagesofbcillgeasytoinsertandremove,releasinglowlevelsoflevonorgestreldallyandhavingfiveyearsofeffectivespan,andisespeciallysuitabletowomenwhohavebeenrepeatedlypregnantwithIUD,havesufferedfromIUDexpulsionandcesareansection,orhaveuterusmalformationorcontraindicationstocontraceptivcscontainingestrogen.During1991--1990,applicationofCLaimplantandSinoimplantwasapprove…
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