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1、上海交通大学硕士学位论文摘要统的复杂度与总体质量,并杜绝水囊式假体渗漏现象。同时假体设计了拧合机构,植入时无需进行直肠吻合术。3.根据新式假体,改进体内控制电路设计,设计多路压力采集电路,用于更准确提取“便意”;加入温度测量模块,实时测量无线能量传输过程中,体内接收线圈的温度,并控制充电强度使温度在安全范围内。4.设计稳定性更好的无线能量接收模块:设计以BQ24072为核心的电源管理芯片,有效解决电池充电过程中肛门括约肌系统不能稳定工作的问题,为系统提供稳定的能量供应。5.研究无线能量传输系统,以提高传输效率与系统稳定性
2、为优化目标进行研究与实验。分析频率分叉现象,并以调节等效负载的方式,避免频率分叉现象发生。在线圈结构方面进行优化:采用多股litz线代替漆包铜线,有效减小趋肤效应;选用较优litz线线径与股数,并设计接收线圈的内外径之比,提高了接收效率。大量实验结果表明,本文设计的WET系统最优传输效率达81.7%。6.开展针对ES-AASS的离体实验,验证了整套系统的功能有效性与稳定性,得到初步的控便压力阈值,验证了“便意”提取可行性。关键词:肛门失禁,弹性缩放式人工肛门括约肌,无线能量传输,频率分叉,动物实验。II万方数据上海交通大
3、学硕士学位论文ABSTRACTELASTICSCALINGARTIFICIALANALSPHINCTERSYSTEMBASEDONWIRELESSENERGYTRANSMISSIONRESEARCHABSTRACTThepatient'snormallifeareseriouslyeffectedbythefecalincontinence.Thecolostomyarechosenbytheseriouslypatients,whilethecolostomyproducesheavypsychologyburdens
4、onpatientsandreducethequalityofpatients’life.Tosearchthenovelmethodstoreplacethecolostomyhasbeenadiffucltbutpopularresearchareas.Asaresults,theartificialanalsphincter(AAS)researchhasbeencreatedandhasbeenproventobeanalternativetocolostomy.Howevertherearelotsofdefe
5、ctsinprosthesisstructure,controlmethod,defecationreconstruction,systemstructure.Therefore,designingtheimplantableAASbecomeanimportantresearchofbiomedicalengineering.SupportedbytheNationalNaturalScienceFundofChina(NO.31170968),theelasticscalingartificialanalsphinc
6、tersystem(ES-AASS)hasbeenstudied,whichbaseontheachievementsofteams’previousreaearch.Andtheresearchworkismainlyreflectedinthefollowingaspects.1.Thevivoanimalexperimentsofartificialanalsphinctersystem(AASS)areconducted.TwoAASSareimplantedinthebeaglesfor7weeks.Durin
7、gtheexperiments,thefeasibility,validityandsafetyofAASShasbeenproved.WhilethreedefecatsinAASShasalsobeendiscovered:Firstly,toimplanttheAASSneedstoconducttheintestinalanastomosis,whichcausesomebadeffectsofanimals.Todesignthenewprosthesisisoneofthekeypoints.Secondly
8、,the“defecationsense”isnotstable,the“defecationsense”gatheringmoduleneedstobeoptimized.Finally,duringthechargingtime,theAASSappearsunstableworkcondition.Todesi