用于腦卒中病人手功能康復的功能性電刺激系統(tǒng)的研制.pdf

1、浙江大學碩士學位論文用于腦卒中病人手功能康復的功能性電刺激系統(tǒng)的研制姓名：賈佳申請學位級別：碩士專業(yè)：生物醫(yī)學工程指導教師：趙挺；鄭筱祥20120315浙江大學碩士學位論文AbstractAbstractAboutthree—quartersofstrokesurvivorshavevaryingdegreesofmotordysfunctionFunctionalelectricalstimulation(FES)technology

2、isoneofthemosteffectivewaystecovermotorfunctionsofstrokepatientsUsingFESteconstructhandfunctionsofthepatientsisespeciallyinterestingbecauseitcansignificantlyimprovetheindependencyandconfidenceofapatientandalleviateburden

3、sonhis／herfamilyInthisthesisamultichannelFESsystembasedonTMS320F2812DigitalSignalProcessorWaSdevelopedtoreconstructthegraspandpinchmovementsofstrokepatientsThissystemisportable，secure，extendableanduserfriendlyTovalidatet

4、hesystem，wedesignedtwoexperimentsforhealthysubjectsandstrokepatientsrespectivelyIntheexperiments，5healthypeopleand5strokepatientswererecruitedtoperformthetasksofgraSpingaballandpinchingaspoonunderthecontrolofOurFESsystem

5、TheexperimentalresultsshowthatbyusingOurFESsystemall5healthysubjectsand4outofthe5strokepatientssuccessfullycompletedthegraSpandpinchactiOnsInordertopreventmuscledamagecausedbyexcessiveFESstimulation，weneedtomonitorthedeg

6、reeofmusclefatigueduringFEStreatmentThisthesisdevelopedamethodtomeasurethedegreeofmusclefatiguebaSedonEMGsignalsofthetargetmuscleWedesignedallexperimenttecordEMGsignalsatdifferentfatiguelevels，andthenanalyzedthetime—doma

7、inandfrequency—domainfeaturesofthesignalsTheresultsshowthatintegratedelectromyogram(iEMG)，ZeroCrossingRate(ZCR)andMedianFrequency(MF)arewellcorrelated、7lrimthefatiguedegree，suggestingthatthesefeaturesarestrongcandidatefe