医疗器械专业英语第八单元翻译.doc

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1、Twomalfunctioningconnectedtothepacemakerprovidedtheenergytostimulatetheheart.Thisfirstmodelhadtobereplacedbyanewoneafteronlyafewhours.Thetechnologyhoweverrapidlyimproved.Modelsofincreasingcomplexitymetthespecificrequirementsofastandardheart.Todaypacem

2、akerswithalifeoftenyearsareelectrodesinmoderncardiology.Atthemomentweareevaluatinganinterestingnewdesignproposal.Pharmaceuticalandhigh-techcompaniestendtospendalotonresearch.Ourinvestmentincreasedforsomeyearsandthenreachedaplateau.Explainittomeinsimpl

3、etermsthatalaypersoncouldunderstand.ThefuzzyfrontendisanimportantphaseintheR&Dprocess.Oneidea-generatingtechniquethatweuseisattributelisting.Intherightupperchamberoftheheartthereisasmallpieceoftissuecalledthesinu-atrial(SA)node.在右心房上有一块很小的被称之为窦房结的组织。T

4、histypeofpacemakerisusedinpatientswhoseheartrateistoofast,aconditioncalledtachycardia;whoseheartrateistooslow,whichiscalledbradycardia;orwhohaveablockagethatpreventstheheart’selectricalconductionsystemfromworkingproperly.这种类型的起搏器可用于心跳频率过快，即心动过速的患者，或者心

5、跳频率过慢，即心动过缓者，或者由于心脏堵塞影响心脏电传导系统正常工作的患者。Although,alltheheartcellspossestheabilitytogenerateelectricalimpulsesoractionpotentials,SAnodenormallyinitiatesitandisresponsibleforthewholeheart’sbeat,simplybecauseitgeneratesimpulsesslightlyfasterthanotherareasw

6、ithpacemakerpotential.尽管所有的心脏细胞都具有产生电脉冲或动作电位的能力，通常是窦房结最先开始电脉冲活动，进而对整个心脏活动负责，因为具备起搏点电位的窦房结产生电脉冲的速度快于其他区域。Therearethreechieftypesofimplantablepacemakers:single-chamberpacemakers,dual-chamberpacemakersandrate-responsivepacemakers.有三种主要类型的植入式心脏起搏器：单腔起搏器，双

7、腔起搏器和频率应答起搏器。Fittingthebodyofanartificialpacemakerisfairlyeasy.Fittingtheleads,though,canbetricky;impossible,even,insomepatients.人造起搏器主体的安装比较简单，但导线的安装却很棘手，在一些患者的体内甚至根本无法安装。ResearchersstatethatSCAistheresultofa“ventricularfibrillation”—aquiveringoftheh

8、eartwhichpreventstheheartmusclefrompumpingbloodtothebody.研究者指出心脏骤停是由于“心室纤维性颤动”引起的。“心室纤维性颤动”是指心室肌肉的颤动阻止了心脏肌肉向身体泵送血液。Anautomatedexternaldefibrillator(AED)isaportableelectronicdevicethatautomaticallydiagnosesthepotentiallylifethreateningcardiacar