SE538251C2 - Total artificial heart implant - Google Patents

Total artificial heart implant Download PDF

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Publication number
SE538251C2
SE538251C2 SE1451521A SE1451521A SE538251C2 SE 538251 C2 SE538251 C2 SE 538251C2 SE 1451521 A SE1451521 A SE 1451521A SE 1451521 A SE1451521 A SE 1451521A SE 538251 C2 SE538251 C2 SE 538251C2
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SE
Sweden
Prior art keywords
cylinder
internal
cylinders
artificial heart
implant according
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Application number
SE1451521A
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English (en)
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SE1451521A1 (sv
Inventor
Azad Najar
Original Assignee
Scandinavian Real Heart Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Scandinavian Real Heart Ab filed Critical Scandinavian Real Heart Ab
Priority to SE1451521A priority Critical patent/SE538251C2/sv
Priority to CN201580050784.1A priority patent/CN106714863B/zh
Priority to EP15742032.4A priority patent/EP3177335B8/en
Priority to US15/501,491 priority patent/US11123543B2/en
Priority to EP19206601.7A priority patent/EP3622979B1/en
Priority to PCT/EP2015/067135 priority patent/WO2016020219A1/en
Publication of SE1451521A1 publication Critical patent/SE1451521A1/sv
Publication of SE538251C2 publication Critical patent/SE538251C2/sv
Priority to US17/395,521 priority patent/US20210361933A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
    • A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3666—Cardiac or cardiopulmonary bypass, e.g. heart-lung machines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/104—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body
    • A61M60/109—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems
    • A61M60/113—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems in other functional devices, e.g. dialysers or heart-lung machines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
    • A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
    • A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
    • A61M60/183—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices drawing blood from both ventricles, e.g. bi-ventricular assist devices [BiVAD]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/196—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body replacing the entire heart, e.g. total artificial hearts [TAH]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/247—Positive displacement blood pumps
    • A61M60/253—Positive displacement blood pumps including a displacement member directly acting on the blood
    • A61M60/258—Piston pumps
    • A—HUMAN NECESSITIES
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    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/30—Medical purposes thereof other than the enhancement of the cardiac output
    • A61M60/36—Medical purposes thereof other than the enhancement of the cardiac output for specific blood treatment; for specific therapy
    • A61M60/38—Blood oxygenation
    • A—HUMAN NECESSITIES
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    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/424—Details relating to driving for positive displacement blood pumps
    • A61M60/427—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/424—Details relating to driving for positive displacement blood pumps
    • A61M60/438—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical
    • A61M60/441—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical generated by an electromotor
    • A61M60/443—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical generated by an electromotor with means converting the rotation into a translational movement of the displacement member
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/424—Details relating to driving for positive displacement blood pumps
    • A61M60/438—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical
    • A61M60/441—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical generated by an electromotor
    • A61M60/443—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical generated by an electromotor with means converting the rotation into a translational movement of the displacement member
    • A61M60/446—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical generated by an electromotor with means converting the rotation into a translational movement of the displacement member the axis of both movements being parallel, e.g. roller screw actuators or cylindrical cam transmissions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/424—Details relating to driving for positive displacement blood pumps
    • A61M60/457—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being magnetic
    • A61M60/462—Electromagnetic force
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/835—Constructional details other than related to driving of positive displacement blood pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/871—Energy supply devices; Converters therefor
    • A61M60/876—Implantable batteries
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/89—Valves
    • A61M60/894—Passive valves, i.e. valves actuated by the blood
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/89—Valves
    • A61M60/894—Passive valves, i.e. valves actuated by the blood
    • A61M60/896—Passive valves, i.e. valves actuated by the blood having flexible or resilient parts, e.g. flap valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3623—Means for actively controlling temperature of blood
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/18—General characteristics of the apparatus with alarm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
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    • A61M2205/3368—Temperature
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
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    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated
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    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8237—Charging means
    • A61M2205/8243—Charging means by induction

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Anesthesiology (AREA)
  • Mechanical Engineering (AREA)
  • Vascular Medicine (AREA)
  • Pulmonology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Medicine (AREA)
  • External Artificial Organs (AREA)
  • Prostheses (AREA)

Abstract

'Vi 1G 1; v' ÅBSTRAÉT A total artšfiæšai heari irràëiant (fi) Qømpršsirwg at iaast first and a semnd pump (2. 3)' far induflzing mami fâøw in a bcsfiys circfiazšaxtczrfy systern is; ciísclïosæd, Each gumg: (RÅ-ä)carmfirises czfwæ 'upçarcñamber- (Q) having: an inlaï channešfifšíïš and sne šüwærahanïber H2) *havšfïg an ouïkat ahssnneš ('13). šaelf: puffzff: mrthær* :mmprisss :me Lzppercytinäer (å), ana iøwær' cgaiinzíer (ä) anci me miaës-*ræazë cyšiæadær (ä), The šnternai flzylšswciâæzx'(å) is prnvšdad wiïiá a vaive pšarm (ff) and is movabiy arrangeæfi insida tfxe asçëpær* andšnwærßyšifuiew_{4,¿É:š}.Wš'1ë::-xthæšrwíerrwai æyâincšer waves in an :spwarfi cširectšnnfurthætr inte: tha uppar-cyiinciær (4), xfašvaÅ ífiífêš) pfiovšde-:ççl .än the: vašvffi pšazrws (Tf) is in av:apa-r: gzfasiâàcsn aaiíowšfig a fšoxw of ixšaacd frøfrw iüs: upaper' uhafnåzer* (å) in the: iaïzvvas*Chamber (få). Wšäæn »the inïerna! myšínder (_6} nfzfixvss in :a dnwnwarfi cšèrectiarä furthez*inta the iøvaer' zzyiinziez* (å: *Ihse -vaive (14) is im the cšofseti ;:=@sšïša%n eiectšng bšrmä frarntha: šcwver chamber (ëíà) tšïrcsaxggšw tha uuàiet charma ('13). (Has, 1)

Description

1G 15 EC? 3G 538 251 The :major cør?pšicaïiorx »af ai! ths tšàræs tataš aziifisiaí hLearis murrerwtiy apgxraved fin the fwxarket äs ïhe farrnatšsrw un* blom aims which .can causes stroš-zes, nävar damagæs) and aveän çifaaiiw when they farm irvsiïzáæ vi-tai srgarxs af the bmšy as esrnizfušisms. Cëthær mcæmpišcatinvns :way ha bšaædings ancí šnfecticxras. Tšfwese cnrnpiiaatiæns atise ašso what: ths “ïlfxHëë are: usæ? før amy a snar: n? iirme as a» ?ricigaæ *whsn awaziting heart Harxsplarxtatšan.
A heaäthy hurwarw heart nærrfzalšy vxfcråzs diššgsniïy anü fiawšëassiy thrcughaut the: lifetime: m? a human being -wšthozxï aausšnig; any compšisatiøns. Therefnr?æ, in arnkær tc» smcnsæd in' dë-:vewpêræg a: heari päwštfzesäs whicifx abie in repface âhe himwan an aft-šfšcšal twearí äs acivarïtagsøusšy deaâgned as a human, heart, This rneans âšwat wa snus? :mcšæmsteárwd ea-xaøtšy hav: ïhs? human heart wørks .as Wai; as the physinlcgy and 'the anatumyff .mf fbs hæart Nerve exftëze t?ra?re 'ïAiä :wweantiønad abnvæ are cørxstrxscïesd in acmrtšancæ wiih ïhf: pizysšaatogy and anatcfny n? tkxs: naturai rzuman heart and *this :may ba why name of these three*- YAH is abše to pernwanerwišy ræpiace the funcïšan an* tš?xe. marnar: heart., tätning; tha åast ihfæaæ Qeca?ies the: knawšedgæ hæhin?. the* fxzrxstšäï-:x as wei! høw tha haimaf? heart' pufnps hinnas* has bear: ffnotiifiedí. U?tiš šæsærvïiy ii was; åzeiiaveéd that the hea? p-uzwps biømrš .by nwæans :af-fa sqLxeszing nm-ïšaßn af tiva verztriclæ mzxsciesa, bar: tšïis åæeiâef ana: nwøiíifâezf? aftæï' Sïšg Lundbäck anü ot?ër researcfëers presærzted their ræsearsšwí. fægardšng the Atricvernirícukaf (ÄV) pšane movement as the gvršncàpís way før the heart to pumpi biaaci thyrøugh *the vessæšss, Tñšs {AV} pšaafwæ fï~=øvs:wss1t šsrxws tha ufuiertying principle far* tha tcatal: artifšcëai heart (Täfäšßi) inaptantsais fïšscšosed ñsram.
ELšMMÅRY ÖF THE WVENTEÛN "The ciæsšgn o? the fcaur-sšwarw?bæafæci artificiai heart “impšanï as (iæscríbad bara-in is cøfvxgpazfabie: in the anlatcxmy af ïhs naïumä tïeafi wvšwfàcrh »aäfrwabiæs tfza faur chammaræd artifšciai hsart šxwplant ta pump biaanš är: a sšmüaa' way tcs the naturaš heart. As ïñss fcuw chanmærëd axïtí?ešaí heart šnæpiant šæ sømparzaäis in ïhe nataausaš heart. physiøšøgiczašiy, carrapiicàæïšaï-xs wherx the: -fcrfur-»cšwexswwhered rnæsha?šsaå hsart is inwplanted inside thæ høcåy are: rninšàrnäzefi. in z-:s *ílirast asçzeæï a tcïax! ar-ïiššcšai hea? .ir?pàšaf?ï cusfngïsrísing- at šeast" a first .aanü sæcøncš punm än? äntšucirxg a bland fiøw in a beciyfsvascasiar' systßfrx is dâscíosed. Each gzurrzp cømpršsas =cmæ zïßppæs* ßhaxmíwez" having; avi intet czhanrwei and :ramsa Enwsr æhanwber having an outšæt:š~za:1n§=;l. The íwn chambers aásrfæsmsnd m tha aïsfmnw ans! the ventrià?še n? äns: naturai heizm. lå) liš BO 538 251 Tha» ?rsï anii tha second puzwps ara šüenticaš än tweir :?nsâruaätšarfa anti each pump further carnprises ene Lspper cyíindær, šowßr cyššndezr and cm šnïærnaš cyiirwdasr. said šnternaš cyššrwciëz* baânïg mcwabšy affangecš írws-ície- the upçnær ana-i Inwer cyíináe~rs and izešng pa'øvšfíeü with a valïva piane. Tha vašvë islams nnrrespànds m the atfšøventrâcxxiar' {A\f} piane (Lea. tha plana- caf fibrøus iísssLzf-æ) bætweærï the atriurnsanci ve?tricies m' a naturaš heart.
Thea sntæffnaš cytšnciær is arranged an ihe insida när' the uppaf and icswer cylincíers such that ihæ icwar pari af tha Ligïpcfar cyiimfer surrounršs tha çxpç?er- hah* of tha šnïarnai cyšin?ier, arui the aßpçaer pari of 'tha šøwær üyiin?ier' surrnuncis (ha bøttcïm hah? øfššïßë: šniaërrzaí üyšíhciar. Tha vaivæ pïane is mrangæå in šhæ 'fnicídlæ :isf tha intamzi! cyiinciær., such. that ths vawæ glam divšdaa tha* iniërnaš cyiírwder m *twn haívëë-l, nns uppær half and cznæ- iswer- šï-aêf.
'Tšäe upper hah” of ifns intar?ai cyïèmier and the nppar cyíiz?mzi?z" fc?rm tha» :mper aïxanwber cørrespazwd ti: :m atršum af the: naïmaš hæart. and the âower part s? the mterrxaš csyišndae* and tha waves' cyišßwv?ier fann tha itswer sixanaber :är-vi aïcwrresponä to a ventricie når' tha naturaš head.
Tha intesrrxaš cyiíndæx* with tha vaíve piane is :nuvïabty arrangæü inside tha sggmas' and Ecwar cylínders such that when the interna! cyššrïdßr :wmves in em ugaward direcåšøn further inte t?e uppar çyïšnüef, a. vašve pr?vided in the 'valve plana* äs in an :man pnsition ašlnwing a fšow tsfvvbinawd fram the impar* cšzarnšøar m the Løvxfer æchamber. anri whën the internal .cyíindar :moves m e: cicawnward direácïiørx furïhsr into the Eøwer cyšindær” the vaEve-:t šs in the. fzšasæxá posštšcn ejscting bšca??l" fram the šawæxf shamber thrøugšw tha nfqtiæi channei. The valves :æføvšded in tha» vašvaëgtßianas iaffeach mfrvzp cærrespøfïd ti: the rvæítraš vašva fm tha Iaf: :skira c? tha fwatursi! heart and the tricuspid vašvra en tha ršght side.
“Ib aahševs an ašfemtive pumping funßticarw af *tha føur-chambered heax-rt, it is æssævrxiiai thai *ïïxæ internai aylšradez' fnøvas in a âaaivfreæ f?arxrxær :iuring itä nwvemænt inašcâe the Qppef and Lewén* cylinder-s. 'The fittšrwgj csf the šnïërna! fsyíindær insideß. the Lsßpæf' afwd kzwær cyšinciers :wway ha made šæak-freæ by prmficíirwg the šfxsideê a? ihe upper axmš Ifswær' :?š?axæwwšaæffss with a "flæxiibiæ šírzšng :naterëaâ macka fram plastšc m' rubber.. Tha flamma iining materëat ie. aäxfàníagsousíy rnaáæ from a bšøcanïpaiibiæ nxatsriai iiks sítïcorze. pøíyaxræti-'xaïxæ m” am?ïhar bïacmnn-xpaiibi?a. matsršaš.
Ta achiewe an affective ancå energy efšâcšafx: aperaïior: af the: fnuræhamberæd äc-zarï, it is æssæntiaš mat the ifïïeærrwafä cyširz?iæf' :waves är: a všrtuaiíy friaticzviæss mzfnner. ”Tha øutær waiis s? the šnternalí cyšïridær :as wei! as :ha inner waiis m* the uppær .faxwi ißwar cyišndërs are pfæfe-ratïzšy prcxvidæd with gšiüšng aurfaßæs. 'Thea glšding åurfacas are adwrarxiageøazsiy :nade 2G 3G 538 251 frtzrv: s :f-:ërar?šß rxwaièršal, išftaníasfnf siæei, carhøn fiber' nr any aïšwr :natæršail that wššïl enahte 'fbs šnïærnaš syfišrxsziæm m :wmvs ifïsâfie ïihz? uppær arm iower sylšndærs än am eäsåërztâaæily* web md fristiøfvfsfeæ rrxairwrweaxï The nutiet csíwannæš is prøvšciæcl with an Qutšet vaiva ta prevent true ratLzrn m' nšøczd bas-k in m the: šnwssr ahamberaïtef tha hinfxïš has; bean æjeäf?tæci tifwøugfä tšfze Qzstšs-:t cšfzarßnei. Spinn cau?et :zêwaanneßs cørrespcxnd in thæ aoníšc vašve afmi ihæ pušfnenazy vaive respåsztivæly af ïhë: natuzaš hæari.
The bøttcm parïå a? *ii-ae tøwer nhavnbew* af the: føur ßhanwbered .artifšsša%ä heart šnxpšant is aüvaniagacwusiy dæsšgnefd -ïø ñsva :a shape ihai šå si:ï1i!ar te fine anatnnwíc skapa :af the ve-.snirictæss än :ha naturaš heaft. Tine vëratfriclæ-s :sf the natufaš heart have an intærnst tiesšggrw wïwš?šw er1abiesíi~1à2 šašoar; to hit a, singmifxg sL-zrface at :šaez šeaxfei Qi tha ësafore :ie-:avšng the veniršcie?s, f-“si ïixæ inåaïaäzïi an* hiïting the staøpæšfïg aurface, 'thæ Kinetic ænargy stuvad in the ñøwixwg bland is før a' shcarï rncæmant tvrgmsrnitteci fc inge heart anal theræaftex* iransmšit?d tzfa?zk to the, hämnd whæn 'the :iiwfecïïíarx ef the ïiüw ha? cšszangfaä. Tš?is kšraeàiz; energy' e?axbies ïhë ?šcsod tu tæave the heart "thrmzgšä thæ :nitšet valvss of "ihe væntricies and enter the magar arteries, in order tea sš'rv:_1,zša.t§>íåwe-sšïape of :s naturäi wear: -ihs bo-ttcm pari af tha šower cšxarïxtxex' is praxfidafzš with a bagäškæ design. The: bagyiike :iesigrw mímšcs :ha :iæsign ef the apex af a naturaš hem sueh thai at' the bøítøwn n? the chaffxher' tm: bšøøä fínw cnmæs in a sus?ítšerx stop and changes cšïíræaíšan abruptly. Thsvræa?er the hämnd cønàšnues inte the outist czhanneëš and szllbsezqa?z-nišy' passes thrmugh the øuïlët vaíve avnci inta the arëeries.
The arms sefàctim-x af' tha bagäškæ partum ai 'fbe boitczm pfart af the iøwër' charmar advanïagenusiy has triangutar' When usad šïæreín išï-e term tfíanguiaz' æhaänä* cnmpràszas mødâfied triarxgaziaz* shapes, ån partieuíar shapes having rounded :nrnsfs and prefærably- siighïiy nunnan! sšcies. A trianguisr shapæ eænabies an nptëmat ftow n? the hmm afiær æntering 'me lower cšwarrïhar through tšäe vašve fcacateci in the: vašvsf pšane-nf the šniernai cylinder and whër: i? cøntšrwuæs šntø šhe bag4ikæ pørtinn :af me. icwwzï-:r chan?ber, and tharsaftar inta the ouïšet czšwannazš. As in e! naaiurai heart, ss iršarxgfukar sifsapeaí crnss?æcziiesw fàciiitatæs tha førmatšon of severai vmïaa?neâs šrxsšdë tha çavity m” the inwær tman?bær tm :fsšiciaw the btemci to hit a støppirwg susfaca at ine bottam part m* tšwe .šixazg-»šike *sínaßs in the iowex* cha:rræ_ïg>ær- ïf-avfï differæ-“nt angšes bafnre% ii changes cširecïiøn exëis ihrnugš: the ßutšet chanrssi. The crusfwssfciiøn of :the šzagåike shape at the» boiïcm çart :af tšwæ ißwer zzhaärvzber' rnay arean kxavæ an øvaš sfwapë :är ja circušar' shape.
V1 1.4. w.. kr* 15 TKJ LF-'z 3G 538 251 Thea uçaveard and dawnward nwovemenz m" âšae intemai cyššndex' away advan?agecusly be ræaiize? :uy means af :šfšvíxïg ßyšíndesr prcwided wiki) an íniearnat screw thrsßszd arrangëd in cssoparaxte with aim exïærf-xai screw -tifxreací prcwicisd :m tiïwæ Qatar surface m” ïhæ šnïærnaš :tyššnciæfz Tims: drivšng~ cyššncšær ancircïæs ma internal cyäirwdæër such that. »Wien the dršvšng çyišnder røt:ates, czßøpezratšve arrarzgernexxï. bætw-aerw íhæ šntezrnaš actsw thread bn the inside wait Q? tšwë :íràvšng :zyiífwaíær and the extsrnaš screw-íhrea? sn the ømster surfacs m' :ha irwtarrwai cgiinder, rfznatašes e: ïíneæar ugß» :and dowvrwvzafverrzaræt ef the šníerfzfaš syšínfíêr .insfšdfš iš-xæ 11mm' and tawsr syiíndars, anü tha msnwçíng; acïšøn af åhæ pump. Tha upward of dawnwafü nwçxv?æxïxënï dape-nás :m .whæiher tha rcætatšønaš rvmvefnerwt' of the drivšrxg cyii?dëx* in a. sšfafsivwíiss fi: a: semiter* niøckwvšse dšreßiicsaj.
The purnpíng aciíøn (Ls. the šinæar m?vemverwí m” ïšnæ šnë?ärnai cyiíšnciæs' än an unwam! and ??xwnwvar? rvxeverfaant- inside the upper arm timer cyiindesrs) rnay he amßarrn-gisšished .by twwaans Qf nns m* aware aíactrurneah-anicaš møtors which firívæa: the :iríviswg cylinder.
The -æïemztrnmechaewäsaš 'nwntnr is advanïagæøusiy furnißiwesà wäir: a frxçtor cøgwheet whính is ccnrsfectæcí ta a røtaišng axšs csfthæ ešeatrøn?éæchsnåšcaïl :natet- Tšae :nam cagwheeë äs arrarmgæd ts so?gäaäratë wštš? an exiernaå cøgwheeš prcvideci m: the :imter sasrfasa af tha sjrijvífng ciyššrwdæfí. such that whsn *tha eïsvcârçnïechaæxšaaí main: rnšates ths: 'rnßwr cogwhaeš, said mutor ccgwheat cacperatæs with tñe æxtsrna! Gøgvwhegi an the driving czyiirwd?ær -arïü rotaateæs tha driving cyišnëer. Tha røtatiø?ai r?øvenïerxi af the :åriving nyiinder laacís m» a firms: up» m* dowr: :rxøvernezwt of the interna! cyiinciær a .ræs-:zsit mi* thë: fifaï cczegßëratšve arrangemanš beiweëen the inïernaí armé extarræa-š .screw thrëaäs. Qepærxíšng cm w?æâher the æiscàrømechax?imai matar is :vperatëzii .in fbe: cšcakwise ar c>øuntar ciockwise direasztšszrm, :ha šfätemaš :fiyiândsr wših its vahfe ç?ane» nfs-øxiæs ïínëaršy' døwnwards arzcå further' ifwfia 'tšwe šüwei* :xyïizwdær car upwarfaïs furïhær' inte ihe upper çyíšnáeri in ene 'enabndizvzent ana sšngie æie-:cztrnrwxsjcf?anšcaí :natur :way cnperzatæ bath tha firsät anti easconci Qunwps tngæthæf. This :wwearzs ïiwaï :sme- síngiæ æšsctrømechanicaš :water mperatæs the driving; cyiïnciærs fm tha firsi aswd the seconcí piirmfzs än a. ?rst-diraí-?cïiaßww, *me ciøckwâse díšrectšczrw aand ihearæafíer switchss år: cäperaie tha aírhfing cyišndærs šcar ihæ both pumps än the opgrxøsvšte üàræctš?sn, is. tha courstew' cšøckwise cišreçtâan; The aäzëatrcnwwaëxzêwaniaa! swotør aiïærnates: bæixafeaën ihe fïrëï anti sacmvä :iirectšarxs ta srsaaie 'tha pur?pšfxg ac-ïinn of the irxtarvfæaš syiínders.
Aštarrxatíveiy, twn eiecfcrnnnëchanißaš rnatcrš~ ara prQvicie-ü »xfhicšw aaah may :ßparatæ :ma puznp. Thía :means ëhat a fš?rsï ašactr?zfïze?zliwariica? ïrxotuz* ogsærates the' first driving cyíixwdæf in me; ššrsí gourfskç? in .tzøth íhe cløckwšssï: and ccwu-ntær clocí-:wise ašræctâons and a saßønd 111 1G Qi? 538 251 siacïfnnfaechazwicaš :vantar açaerates tha» secunci driving cyšàxëcšer in the sec-ana pump aiss: in bath direßcfïšøns. H-Qvxfëwær., the firsi and sæfmnd ?šecïrønwëaïšï-ar?æšcsaai rrxøícïrä :m2 aafivarxtagæoxlsky' øavaipšæaå ta æach icajüwær eiæciršfsaiiy :ans ïhëre-by syrz-clfwxnzïàzëd if: røtate ämm driving cyš-indærs sšrwmštaswæousšy in tha san-wa ?š,r':§ctšor1 and at ïhe game: vækaciíy.. The: ešæçtrafrxeshanšfsai nxetøzs aítsfrxate: betvveerz the cícwkwíse anfii ccsunter ciackwisæ dšrectiøns år; eanaïbša the up: and dawn nmvernænt af »ina intarnaš czyiirwcåers. Both purnps mmfe the» sarnæ speeæzš. in a 'fnxrihær ærfzbncišs?eniiiwo different èieæïrømech-anicaš :nøtnfs :way accompišæhthe puvnpšrwg avfišøxäk whsrsin each nå' the eiaatïnnwechanicaaš matars is aørznectsaí in åacsih purnçzs. šïianxh nine n? thai: »stemïršcaf Wai-cis øpæzfates tšïsæ cârivirxg aylšnciars mf both pumps amy in :sne direfztëorm. A first æ-šeëctrør??mšïaxaieai matar futatezs ïïhe: :Lfrivirxg cy¥iÅnü<§rs~ of šaøih pu-:nçzas in -a fir-?æi' direction, and a senrsnd -êêæcirømachanical matar .røtates the :trix/ing cyšir?ders si* bath pumps in the epposäïæ cíiræszïirarw., än this embfociinxænt ïhe two» al~æßïramecsš*waænicaš nïütørs wii! aiternate their ?ïçaeraiíensv, La when åhe fåret aíecirczrneci-xantczai matar opamtes tha sænnnü ešeßtrcämeffchanšcai :matar æsïsí arm* vise En arsütš?åëzr*embøáixnenï the uçwward ana nâawnward ímavemerwï m* the intarnai cyiixwdær :my be ræaäizæd w means sf a aïafox' eyiiïwder whâch encimâes the irxisærrxaš cyširzdær, Thea sïaïør cylinder' is prcviáed with av: šntërna! 'sfzrew threaü arïanged ta: cøcïpersïe wätfx a-'n eïízérnaí scrswihraad pravicšezi' nn tha iniernaë syišndeaf, cøüparatšve arrangærneni enabkës: the: šntæmai cyíê?ciær tø :Tmmfæ íšnaarfy up) and ?owzw irxsioše the Lfppsi* and šowar cyšín?iers, in one; am?c?cïišmsni he Lspper cyšincšers and .iøwer Gyiirwäers in each pump may ha sannæctæd and farm (me: æï-axtezmai cyßíncšar insíüe which thæ inærmaš cyširx?šeëz-'šå mcvabša än an up~ afi?š cïüwrx møvæxwwænt. in a fufïšver emhaaiiment the: upwarfi! and døwrzwarü rnovemeni crf-the -inïærnai cyiândær :way tm ræaiizsz?i by :neanë m' a: pzrotlruciífïg *fEar-íge çßrcavšcíæëd of: ïths interna! cgfšiz?dær arranged to ccoparats wíïh an aiëatrosnechasašca! nwæinr prmfšdad wšïh a :ï-cxæësw axla. Tim fiangs is fitïssad æafith :a høše prcßvšzißad with am šnïæf?s! Ithræad inta: which the scræw axšs äs threaüaci. š?ihan the eíæctrømechaifïicaí matar 'raíatas ine screw axis, the coagzeraiixfs: arrsngærneefwt bffziweesn tha screw mås and the -iåmzzzadeizd haka in *the ïiarwgs ensbiæs ïhe internâai. cyíina?e-r* to mfwe šínsarty up ann! :ziownv insifšæ *me upçzær amí l?waf cylínciers, h* the upper and iøwer cyiindærss, ara?amräæcztëai, the: int?aerna! Qyširwáer may rmve .in a širmsar up» ami :inwrw movsmænt inside 'ï?e Externa ayššrxder., fl-Ü .kr b? BC? 538 251 än arne» erfzbfadii-fzei-wt (ax-ae singšæ æfæctrcxswwechanicaï matnr?-“zay be pravšdæd wštï: a šàrwf axis wšwiaàw cøuperaïes with åns sšngše iarczírqcšíxëg ?afzge: ,whicš1 is fzønnæsfted ta the: šnïæfnaí “cyiifwåd?ærs :sf bath thæ first purnp aräü the senmrwai palfnp. Tšäe orzæ eiæcàrfi?rneæšwanšeaš :nntnr cvperates said :ma prcaïruaåifxg flangæ am! thareby both interna! cyišnciers sšnwmtaneaæasšy and at the aarrze vešcacity in a fferst :zšíræ-ctšøn, and fheraafiær' in :si ?eczcrxá ciírfsctiøfw oppøæštæ to 'tha fšxfët cišrscšinn.
Tha tøtsi :artšficiat heåañ impšafät :ïxay aiï?rrwatšvaly- carnpršse two diffæræni æiæctrfzrneczifxasrxàcal rnøtsfs- ešacz? \;;:r@v*ídf+;<3 with a :screw axšs, wheræixw *the fâr-si slacàrømæchanšcaš matar :merates a firsi prcñruäing fiange which is cønrmsøtfsssš “IG íhe intærswat csytimzier m* tha ?rsi pump :vad the ëëcarrcš ïašæctrçuräæfzfxafxicaš rís-wc?ør' aag?eæratešfs a second prutrudšrwg flange which k: czarmæçíeëü in åhæ .internaš cyšir?ciær of ïšxæ aecend punwp., sašá flirsët and se?ønei ašectraïmeßchz-:rxicaš nmiørss operatæ said fär-at and secøncí internaš nyiindæffs seçtßaraâæïy, but sšzuuitaswæmaasšy the same :íirestíarw aand aï the saxwa vašoníty, Tïwa tmaš arïšficia! heart ímplant away aim; czcsmpvrisæ twëf ?iectrmmæcšfxaxræicaït rvxstcaffs wheiarašn aaah etectrïarwxsaïhraæwícaš :vantar Es prcvicšexi with a screw :ams which cøopæfatss wiih ene pmtru?ing fiangs, aaah pføirucššfxg fïariga :aging aønneciecí ts: baïhšniærnai cylindæïss. Tha :first ækëctr?srvaeašxja?iaalv :fmtar aperaïes a first garaïrudšng *flangæ än a first :íiracïicr-z, :aaici gi_r?is“udirïg fiange is comnæcïed in the iníerr?at cytincåefs m* bnih tha first and tha* secøncí gazinaps, and the sæamnd æšæzitrcmacïzanicaä :natur øperateæ a sæzxrm? prsatmáhwg fiangæ» in a samma cširectíøn whímh is øppasšïe-tø the first niirefctšeswà, said secønd prcifudirwg flange is ašsø aønrm?cïeëa? ta the šntaarnaš cyiinnfíeærs of hmm me first ärm! ïhe s?aøräd pun?g?š, in this »arrzbociimæni tha two eíactcønwechsniaa! maftors wšii aiiærrwzate íïtwair opera-finns, La when tšxæ fšrst eiectrænrxecïwsnšcaš rn?âar cßpærates the sæconci æiecircxmæfzhêxrwšcai frwøïnf' rests. arwä VÃGE? L *The "upvuará and ci?cxwzzward nmuenwent a? the Itrzternaš cyišzëcïer :wway ašsë ha reaêšzæd by f?æans :af a âzycårï-.axxšin cyiirääeruzärrarxga? in cøfxpa-ratæ» wíih a gsrøtrudirxg fš-angæ cnnrwefsted m fiwe interna! syïíndaf, sz-:i?i c?oparative arvangænwænt enabies-*thæ interna! ßyiinciear än :have šinearšy up: and dawn insida the ugzçæer arma* iøwer sgßišrxdafs. i? tha uçxpef and Eat-war cyàirtcáæfïs are ccrznænted, tha interna! cyšizä?isf may mnvæ in s; linísavr up» and dawn movement insida tha externa! :t-yšinfisr: The t?tal arïíificàalà hæart írfrptarst 'rräay cø:wpršsæ ønšy one hyzirauišc cyiincšer, xwšñerešn said hydraušic syiindsr npefaïæs une pretruciing fšange which is m?nnæ?teçi *eo-tha intiærnaí ßyiindersa of :mm purnps, said hydraaulic syäifwder øpxarates me šr-:vtëírrzaš cylindaë?r? å? ïlrü 15 :gu 538 251 sšr?azíâëznëøusšy än a fär-si directicrx arm tšwærsañær in a secønd díreßiïan xfxfhích is øppczæšie m ihte first üšrçsctiorw.
Tim mtaí arišfšzziaš heart šmpíarxtk nway êatsm :znrvæpfisæ twø hydrauišc cyššzwiïiers wherešræ the first hy?irauëíc cylindar* øpefiratas a first' pfütfzaaíiïäg ?arzgs wbšxïš? is connecïaü in ihæ irfstamai cyíàrzrïíærs af both the fírsâ :tanzi än: saczøncš gaurraps in fira? dšræniiøn. armí the æc?rz?í h-ycirauíic: nyår-Rica* np?ærates a sæafand pro-ïrzscišng flarzge whšfsh is aonnefsteci ica “šhe šrïtarnaš åæyšindars m” bath im ?rst' and the :mc-and punwpa in .a sfaønnd directâøew whißh is appasaiæ: te the fšrsï ?åirectšøvní in this ewzbaciimëzaif 'the Ms hycåfaušiic cyfširwders wšli aitàrnzæiæ their oçøecaiiatw-s, whan tive first fwycšragxišc. moïnr nperatæs the secønçi hyziiraxßšic :notor rasta, sin: vicæ varsa.
The ícëïaš artšfšsiair hæarí irnpia?â rnay aviiaë-:ïrfëaïèvèeiy Qfßifrfprísæ two hydrauiíc :zyíiï??nfarfæ whersšn the fšrsiï hydrsuššc cyišnder Qgzeraiæs a first prøïmdirxg fía?gs wšwicši iä smfxrwecïëcí ta me ënternaš cyššnders of ihe first pasmp and the sæcåcmd šwydsfz-:fušic zsyëšndefa' opæratæs a sæsøncí pretrudšrwg fšarxgs: wiïâch aennæçieaš ica 'the interna! øyš-inc?ær' m* *ih-e seczs?nii paanpi said fâr-st ar:=:i.se::ær1:í i~iydr'aulšc »izykinriars nys-armé said -širsí and 'secøruïi šrxiarÅræai syširwdssïrs separatæly, äuï sinamtsnemzxßsšy in the sameë ciirfæßttan and at åhe sanze veicacâiy; åRiE-.ÉF BESCRšPTiGN GF THE% EDRAVMNGS Fâgurß. *i äs a cf?ass sëctiorzaš view af sin asïifšcšaš ifxeari irnpianï ass äescršbæd herein Figure 2 Tis a cmss sectienaš view' af an artšficiai heart iimpian? fitiænå gvšàh Va ïšæxibi?ë timing fnaíešršal..
Figure 3 síwws thæ hšncx? šiøw past the: bag~m cuïíet chazaneš, anti Fíguræs íša?fr. š-hèw :iiffmïfnt advantageøu? nrøsæ sæctinswai shapss m* ïšw bagdika shape u? ïhæ Efawer chafnbær: Figure 4 is a Grass sëctíøfïal všsw of the artificiai heart whesn fšåfted wiïh twn ešectraïnechawwímal nwøtfsrs.
Figuræ få is a xfísw n? the srtšfšciai heart wher: fištad with ans æiectfnmechanicaš rnatmä.
Flšggure få is a frietaišed view az? how tha eïeša?tmïnæcharsícaš avatar ia :awangs-zd .in øønperaï? mfšïh the airíxfšng cyširzfiier and the irïtarrwa! syiiríwcíær.
Figura “f is a :nr-css seçtšßnaš view af the arššfšcšai he-art when fštted with staïnr cyíirxdæsf, EÜ h? Vi 3G 538 251 Figure 8 is a- deiaiieici view af fia-w 'tiie siaiør Qyiiiider is arfaiigiaá ti: campar-site wiih iiiæ infi§as=ïnai eyišiwiier.
Figur-a 'ëi is »in-oss sactíøiiai view Qi the artiišæiai iieari when fiítsd with tiva æiacxtrßmeehaiïicai riäaícrs providæzi wiàh screw mas, Figure ”iQ is a view oi the artiiiciai iiæaiï when “fiiiæd wišh ars eiecirsiïzechaaixicïai iificstoi' prnviciecí with screw: iaxis.
Figifiræ “iii is a view Gif this ariiiïwiai heart when fiired wiih ana hyciraiiíic: Lïyiiizder.
Fšgurß 12 is ci-:äss åesiicizeai view* fi? the: ai-iiiiciai ifiæzarå wiiærsiii tim iiniernai cyiiæxáiær :waves Lipwarci-æ inta ihe Lzppar cylinder hånad iicws frem iiie :ip-mf ciàaziiißiafr *ihraiigii :ha vaiw: in iifie vaive piane and ânw iiie aiiaiiiíaër; Figure 13 is a »arms-s sæctiørxaš view mf ïiißš aiiíficiai heearâ whaifein the intariïai cylinder :waves šiitc: the iowei' ayišiwcier and bland is; eiecis-:i fram tiiiæi šaxfifær' aifiambsi' tiirøugïz the nuíâet channei.
Figixæ 'išia is* :a view mi' the aiiifisiëai ?szarï whsii 'fiiïiëcš »with an eiectiai?æchanicai niniai' pifaviijfaci with; scrëw axis wiii-íieieiii this: upgieif and šiïæwei ayiindærs are* cnriiiacted ti: farm Gifuë: ëxiarriai ayiíniie-:ii Figure: *ifišs is a view of the ariifiaiai hisaaii when iiïtæci with :ma hy-:iiëiiiiis cyiiricifaf' wiiæreir: iii-ai upper anzí iawer cyšiizders are ecnnected m' forrn ene sxiari?ai cyiindær? ÜETÅiLEÜ ÜESCRIPTiGN An artifšciai šiæart impšiaiii *i iiaviiigfnur ciias?ixers is; disciosæci in Figure i, The fciir ciiainbere. rneæhanšcai iieaii comprissæs iwo punfips, 'first i?urnp 2 äns! a sezmimfi ç?li?iiä 3i= 'ïhs first anzi the seccnçí piinips 3 are ildëniicai in tiie?ír cønstructioii and saa-h punwp msmprirfsæs :än upçaiar cyiinder 4, and a tower cyiinder ä. An iniiaariiai cyiifidæf 8 is airafigafii rm the ifisidQ of tha :supa-and iower cyiiinüeis: 4, such thai ihæ iàwer part :rf iiiie »spikar myiinder 4 sisrrouncis» tim :six-per haif m* the inïæfnai cyiincšai' få, and ine upper gzari u? iiie iøwar cjyiinciier å suiriciificåäfiiiæ inwæi' ii-aii si* the íiitærnai cyiináer ä. Å valve plana i* is ai“x*ai?gad in iiiæ inidziie af the iniarnsii cyiínder å, auzzh thai; the: vàive pianæ “F :iividëß-s "tha internai nyiinaiær 6 in iwn iialvssz?, ana Lippai' har? :and sm iøwæf* half, Th? upper cyiirwcšær »fi is ccznnentaci to an Lzppar newer' and tøgeiher with the uppe-i' han* :if the iniærnai cyiirwiåæær E: thësiy faim an impsi* cifxaiii?ei* 9 whšsh corresçßcinçis in an atriiiiiw mi* 3D M Vi 538 251 tiiiæ iiiiiizriiš heiafi. Tiie iipçaeii* iznïivei* 8 is iciraiviciiéd wiih an iniai iziiannei iii) wiiiøh aiiaws biøød ti: siiisr iiiëë uppør Giianiinær Q.
Tiiê: iczwier cyiindsii š is canneictæd iii a: iiziwæi' aiziveaii *ii arici t?ageiiiar with iiiiæ iiziwëi* hal-i Qi thai interna! cyiiiiciær 8 'thsy faim s: tower' öhàiiiihær' 12, wiiicii scirrssi?ond til: a veniricia of this riaiiirai iiiiari., Tiie iøwiii* cøveii' iii is; piøvidiad iiiiiii an ciiiiieit siianriiii '13 wiiiczii aiiøws bicmd iii æxii thai iøwei“ shaziiiiæi* 12.
A iiaivs *iii is airangizmi in tha viaive pianæ fi* iaeiwieiiri ihiis iiçiçiiëi* siiziiiiiäifêi' 9 and the i?iiiveii cihsiriibær 12 wiiicii siirræiaporici? in iiia ificuspicí vaiiie :ii the rriiiraí vaivæ dæiiiiiiciíng im wiieiiier ii si; iacaied in a giiimis »which acis in ima- piiiiniziriary øircuit ar in a piiiiii: which in tiiæ systemii: circiiši.
*Tim šniernai cyiinciæi* with the vaive gciiarie Y is riiii?vabšy à-iírangeitš iiisiiïie ïiiia nappar and iøiveif' iïzyiiriciëiis ii., 55 such ihai a piiiiiping action is. are-städ when mi: iiiieriiai syiiiiáiair 6 »wii-i its viaiife piiiiie i' :iiovss širiæariy in iiiia tiownward áiræaii?in fiiiiii-ër inta iiiis iowei' cyiinäer 5 :and in tiiia iipward niireciiori furiiiiir iriiiïiiihe iippeir cyiiiiiif-ar ii. Wiiæn the iniezrriiiii cyiirider 6 :waves in iiiia upwarii iiiræciiifiii and iuriii-ei* iiiia tha uppar cyiindei 4, the vaivë 'iii lccaieü in the valve :aikana fi, :ii-nens Lip and, biaiiiå iiizws fram the: uppiar chariibr-zr ši tiiroiigii tim valve M» and inte tim lowiir ciiaiiibær 12.. Wi-ian iiië iriteiriiai cyiiiidëi' S ri-iøves in iiie dczwnwaiii direcii-:aii and iiiiiifiæi iriiø the šøwsr ciiaiiiiiai' 12, ihe vaiva *if-i ciczisæs an?i tha iaiøøii ixiiiieiciiici in tiiii irzwer ciiambeir “ië :mi iïirirugii iiiie øuii?i ciiainnei 13. ii is tiius “tha iipwarci aiizi fäàz-wiiwarci ziicvemeiiis Gi the šnieiriaëi cyiiriçiiii' 6 with its-valve piane i' which cræaiæ the giiiinisíng iiinctiøri mi' iiie fciiii-»chainbe-:reizi z-:riiiiciiai iieiari immiani. “io achieve an; eifæctivs and energy saviiig piiriwpiiig iiinætiøzi for the foiiwchaifibereiii :aiiificisi heart šiiiçiani the iriieriwai cyiinzieii* 6 niusi riiiive in a ieiakffriss wiaii a iiiciiøiii: iæss mannar during its riiøwriiiærit inside tha uçnijisf and iiiwer' cyšii-izziers fi! å.
Aoivaniagæcsusiy iiiš Quiet' wait af "iiiië intarnzi! cylinder ä as; wei; as iiie inner waiis (if the iiiigiiïer einii iciwiir cyiinders 4, 5 are çsriiivicíeid wšiii glicišiig suriacss wiiicii enat-sis ihe iiiiiii-'riai cyiiridisar ES in mcwe wiih high prscisicin iii a viriuaiiy friiiiion- aüii iisak-freiæ iiiamiær. The giiiiing; siirfaces are aiivaiiiagiiiïziiisiy made finn: sig. a cærariiic iiiaierial, iiiariiiiin, steak asibøii iiiwr :ir iiiiy ø-tiief rriaiæriai “thai wiii sinaiziis ine iiiiernai nyiiiiider fr? ii: rnoxfe inside iifie upper and iciwiar ciyiiiiciera fi, 5 in ar: ezaišæntiaiiy ieiik» and iriçiicirvfreie- riiizainnair..
The: šiiiirig iaf iiii; .iriiiiriiai cyiindeir å irisšizie iiis iipper :s-iriiïi lower ayliiridiërs 4, 5 :way also b? made iæaiviræa iïy prczviiiing iiie irzsiiiii mi” iiië: upper anizi iïiriwer izhambiers 9, 12 with iiæxiiiia iinirig maiiiriiïii *iš riiaczie frarn piizisïii: nr ri.ii:>biiii“ (sem Figure 2). in »the upper siiiiiiibær Q the iinirig iiiatæriaii iíš exieniis from tha vaive M in the vaive pianie f? and is 10 .ifü 15 2G Ešíš 538 251 aonnf?cï?câ ti» an üp§1e§rju_rmtiøf1 15 bstvøæsn me upper Cylinda? 4 and *ma alppaf cava' S., grid in ïhaë iowær charmar 12,. the ššnšng rnataršaš 'iíš ëzxisrids frcmw the: valve M ?f tha vrf-liva pšane "f and ie :zcïnnæætasd ifs e: iawær ju?ütšøïê i? betweefïihë :awer æyiindex* and tha laws-r sovar 'ii Tlhæ materia? av? ïšwë: fšexšbia šining nxaïefrial 115 is a?vaniageøxasïy ma?še frun: a bšcvcïzrïw;ïßaiibia maieriaš šike sšiicønez, pošyureíhaæne m' ancatšæær ëšfcsccsrxwpatibše f?a-tëríat.
Advantagamazsiy. the Qrifics mf the inkfët charma! âš is prøvšciæá *with ezn inla?ï auf? 13 :iæašigrxesd in be connafzteai ica æštiàer the systern?c1veir?s cf the systemh; Circuit m* ihë pazšrvxøfxafy væirzs fram the: pušsncxxasry czirmuií. Tšäez inifei Guif iii» pzíaefa-raânly rnaaiæ fram s: bíøcømpatimiæ rnatar?iaaš, Tha nwaater-ial of' *the uçxgxef gravar 8 is æšdvantageously rnašiæ from a íršiøczøs?paiibšæ :wxaíeæríaš such as çåiastic, rubtzer nr sneætai, siišricßrxæ, :søiyxxrstkxaneæï titanmnw, stam n: any :sim-är tziocømpatibiæ mateffzfêašsá Tha øutís-ï cšwaxfznel 13 fram: the Iosvær charnbæf* 12 šosated in ine iower envar 11 is ac?varxtagæøzzsiy przzvi?eænš with sn mltíet vaive 19 in the naæïuraš hßarï. Tha øutiat vašve 19 wii; psïeverxt 'dig rætus-'r-z s? hämnd back in m ihe kzwer çhafïwbær 12 :sñær the blaaü has bean ejæcted through fbe uaxíleai s?ann?i 13:.
Trac-a Lmttpm pa? af the: iøwær' szšzafnbßs' 12 (Le. the šawaër navet* 11) is aacivanïagscusíy' :issigned tm have a shape that is sšrnišartn the anatcmfzšc shapæ mffhe vantrâsšæs in the naïxzsak heart. in the fzzux?-chamhesfeaïš artifšciai heaïâ iaff?plafwt tha tißaïtmnf: part ef' the iøwææ* shaf?bær" 12: is. tha iawer ccver 'H has s bsg-šikæ wamë 2G desígnvad in :nimic-àhe interna! shape af tha. veårztricšæ in a naturaš heart (see Figure 3; The bigod. ñ?vš (Arraw) »which passës fram the: upper charwber å* šhrnugifw the vašve 14 inte» the kzuvas' chamhar 1:2, hits a stnppizwg surface: 21 ai the: bc?ttmn par-t af the: bagpiike shape âü and ccmæs år: a suädæn støga; at whšcr1 the fiaw cï?arïgæs its dšræcïšafw abrasptiy and nnnti?ues aëcrzg ihå- fiutšæt chànnsš '13 anti sušzåëquarwtšy passes tšfzraugh thes Qutisixfaiv?: 123. 'The erna-s sæætšxirffï :sf tha bagl-»šike shape 2G at ïhæ bøïíam part af the "løæver mhaæ?bër 12 (n: tha icwær' cover â? azivaniaïgamaxsíy has» a iršarxgular shaçse Figure 2:a) 'to ænabiæ an Qptimaš fâßw :af bieczd šrørñ the Eawar chammr 12 inta: tha .ssutiïei Ghanrxël 13. As in a natural ñæart, tha àtría?gzhxšaf* shapæ? Grass sesâšøn faäcïïitatæs the farrnaííar? aífïmv charrmaís inside -ïhæ çavíty af tha mwær shambæi: æuczh that šnëac? xfvši! arršvæ fram difïænsnï axngiæs at ïh? atafpgfærxg ëurface 21 Sf the: §ua._f'-ši§»:æ shape ïäü, stup, charge direction and erztær the måttet channel '13 anti subseqànwsentšy teave through the mstšæt vaivs *E91 Ai-tar:1at§væiythæ Grass sæcrïšmn mf the inside cønsïfuctàøn s? tha fewer* cam/er' 11 'may have an nvaí (Figure Bb) orcircušaf shape (Figuræa 3:2). 11 il 0 f?å <3 k) if! 130 538 251 Tf; faciiitaïe the caunrxæatifsrw bsëïwesr: ïíwæ Qutleï' :zhanivsai '23 and ïšws gïfxsinwšnnary arterg :sf t?më :a-Lsšmanasy cšrcuši m* the aørta :afíæfy afihæ sysiemic cirmuit, tha ørifëezearøf tïnff: outšet :zhannsis '13 are: pravíde? 'wšth outšæï :Jmf-fax 22 which :Mitä särtery grafts» (seæ 'Fšguræ 11:.
'Thare ara rfnany aêtæmæiíve waya to amëmrxgvššsh ïheæ pyußïspâng nmvænaæni af the: šrriærrzaai cyiëndær* få with äts; vazšvs p?arïe- “i irzsšaiëjifwë ungar arm änwazf cyššnciars 4, Å number m* pcssibše emê?øriízrzefwïs af høw in anhieve a Eâffsæar* fnavszrniarwt <1? åhæa intæræwaê nyiindæf 6 in an upward movement furthezr 'into ikna: upper cyišnícäef' 4 arxcš a dfswrxward n?overwarvbfurïh-ar ínin ïhe iawer cyiíncier å' wiki :fmfwf be; desaribad, Pšnwevær the: skišied gxsrsøn wiki resa=íiz?a mat tha :issrsxibafëíxi ëßxnbøáiznarats arf-a nøt (ha Qrišy ways ie accür?päisfh this pumpírwg aczïiøn_ Tha iinear* movesrwesf-xt at” tha: šrxiarrxaï cyiívrwaier* få :may asfzçuxwfæpíisšwæcê mf :mama Åaš a driving cyiindær ?æen in Fšgzßres» å .to #3. The nuir-er surface :af tha iii-kärna! cy?in?ef- ä prQvi?Qd with är: ax-*serrwaš scfæw" thread 2% arrangeci in c-üapezzaiea wšth an intærnaš screw thræad ïšâ prevideü nn tha Visäsíxie suzrfafzæ a? :hes driving cyiinxiær 23. Umm rctatian n? the drâvšng cyiímisezr 233 ïhs inïæfz?ai cyširx?iæ-f* #3 wštfx it is .vaâva plana Y mama-å iirsearšy eitíwr' dcwnwards further ârïto the towæf cyiiffmier 5 ar-Lz-pwzaraia furtlïeßr inn: im upgveær cyiindear 4 äeapeæmåšng xfvšweiiwef ïhe cárívírïg; rzVyäirxdsr 23 mtaiefs ir: a ciëakwise* m' cøunïæï' ciackwisa fiirectinn. This upwaraí anci doysmwarai rrxczvexnszwï of iha ínternai cyšànaíer 6 accurs by :naans m" the cenpæratàxfeæ: arrangefnent bæiwæsn tha æxvíernaš and intas-na! screw thrfæads 24, z?. i “Tha cšrivirxg ayšincier 23 is :izivantageegisšy QåmarateædÅ í?y maa na of une os" Hmm e-:tæctramæcrxanšcaš møïórs 26; Tine driving cyëínder 23 is advanïagænuisšy prøvídæd with an externaš aagwñseš (See Fßšgzires 5 anal ä; un its antar anariacearrsrzged m. coøpenaie with a :water cogwšweæ! _28 vvhich ia oøiäneaïad ti: a røiaïšng axla m* the :ms nr mura aieaïrørwxechaswšcai nwøimrs* When thÅ-ëa üriving; cyiixwciær 23 is crfçv?ïsæratêd by meëans få? an eia?zirømesfcharwšcai rustar :â? tm :nøtør aogwheæi 23 n? tha» aiectriørnecf?arsícaí matar Råå cøøpe-r-atæs with tha exiærnai cogwhæai iacsaiæ? en íï?ë GLstër sauffase o? tha driving cyiincšer 23 and aitarnataå theë ïntatšørx :sf the: dfšvšng cyšincåær 23 in ëitifïaer the: ctøczkwšse m* sann-ter' ešsckwise çišrecïiæra. Tšwe' cáríving cyššn?er 23 is acivantageausíjf" r?czznïæd insider a høuaëšrzg Each purnç: may än :ana aitærrxaïš-vë ba* nøerate?i hy separate ëiëctraaårneuíwanical pumpa: ëfåa afxcë ååh (ses Fšguræ 4). in this erziízøaíšrxëëni a first ekaatmrnæchanšizai nxeter 26:: zïßïates the :iràvšng ayiirxaáe?r :sf išwaë first gnump 2 in »ana dífecišøn eg. tl?e cteskwšss dšriectšcsf-x: which wii! ïhfa šrwïevr?ia! cyššnds-:r 6 s? the -fšrsí pump ?o 'wave in a first lšnaar 12 lå) 15 2G 3G 538 251 dšsfwâšora. in n-Risßr in Qhëængæ thfs» ši?ear áïræcïšgvsà af nxøveafr?iëswt far me' interna! cyiiswdæw* å, the eiæsírornæcharwšcai rnoïcz' Iàfša wii! :state íhe çiriving cyiíæwzier 243 in :ha Qpgøsâtes aiåractiazw, ïhe: cnuntíær nšøczkxmise diræctiurx, wñš-fzh wšië causë itêhe intar-na! cyširzci?är få w :nous in a særsnnci ïšneavr 'direction and øpgmsšte in the fšrsï lšxwïsar ciír?ciicsn, A sacond æšæcârcmechaïxizïaš nxaïawx* 26k: the :za-amd pump 3 En sšrrxiiar faashšorz. The first. azwd saccmd ešæcïrørnecš?anictai fwmtaræ Qíša 26%: are ccaaxpied in æacâw üthefr æiæaïffšcalšy anti :ma äyxwcêwfmnizçeci in each nthær tic: nmxfæ hmh pibsrnps 3 sšnwåuštanaaïsusty in the :aanw dir-astma ämcš at ikze saw; xfëêacity.
Aštearfwatšveiy sne singgäe eieatfomscšwanicai matar 2:5 cpæratæs iamth :ha ššrst am secnn? pur?ps 3 and 3 tfageaïzhaf Figurss 4 arzci fi). This :Tua-ans thai' tïxe-sšrxgšæ aisnfrorsaechëxnicai" møtcsrv fxztates. tha firåï aná' secøm? driving cyiínders :ååh før 'bath tha first; ana' ssccmd pVumps 3 in a first airæcïïínn.. ag. the akøakwšsæ cšir?ciiøa: vvfwšciw wii! fsausß the: färsi and secmrxš šnïærnaš cyimciærß éiša and êšïw är: :rm-ve in a fšrsi iš-near üirectíøn, Theræaftez-r tm same:'ašëzf?irøfnæchawwšnaš avatar ES roïaïægs the first and sann-nd dršvirxg cyiirïcšefrs íäâa 23%; 'fcfr bath tha first and sscoxwd pumfixs in :ha øppnsíte dirsciinfë the counïer ciøckwšsæ üšræctímw whíctë wiii tagas ïm? ?rsi. and sæccancš internaš cyšincíærs Sa, fit) to rrmvea in a seccsnd ššxïaaar dirsctíøn and øppøsštæ to *tha first ššnæar dšrectian, “This rnearïs that :me sísïgš?ë.ešèaciremeciwanšcai rnotarëå wšii aâtarnaie bætweezn åhæ c¥::cšf:wš's@ and .couf?tær cšcfckwšsæ dšftæc?ions tf: ?nabia thæ iup am døwn maverawerat m* ihe mtærna-i cyššncâærs Sa, Sh.
Ašternatšveäy iwß ekëicïrcnnec?f?anšcai rnoiona 2831, 25k; øçsaraíe-z bath paimps 2> 3 wíwraír: aaah crxe m' the: Aeêëciria?al :x1øtnrs:2§a, ââb Qpsrates the internat myišnåærs (åh m* t?øïšx pumps 2, 3 nniy in one airæctimn (see Fígures 4 and fi) .Å :first stecírm?e-:zšwazwicaš mutor 263 rntates 'the :itwšng cyiindars Iåíàta u? bottf: pafmps ïš, 3 in a first dšractšan, eg, in the axšøtzkvvšsæ díræciinn, whicfx wii! cause the: interna-ai cylindëfsë åt: m* txwïh pumps 13, 3 io :nova in a first åinæar cišnæciàon, A secørzd eie?tršcaš mottar 2623 i?taies thë dfivirág rzgalšrïdssrä íâßa, Eiêb af both pumpfs 3 in tån-fe capmësivïë diræctšczn, eg, tha counter mockwise niirectiøn, whi?šw wiii causæ-iša? internal ßyßincšærs Sa, Sh af bath wurrms 3 “ts :?avë in få seccaxwfi išrwear directšnn; and opposite ta the first :ingar ?iiræctírsn. En ihšs srnbøüimæni Vibe two eiefzimmæchanicai nmtørs wiiš aštazrrxatë: their operatinnså. m, »vhæn the fi så eiesïrøvzï?ecë?arašca! rncçwtøf nperateë thæ seæan?i æiacârænxecšwanísaš matar festa, arm! via-ß: Våšfåë _ A srnalt rad (nat shøwra; äs cønnescte?d 'fn the hcsaaåir?g 3G aná ergagës in a iørxgitnzzrššswaš pšf :m the :mer surfase af Vihæ internal çy*fin.der få är; Qfeævsni røtaïššcwsw æf“tiwg intemai cyšinder 6 13 538 251 wš?<~:?_ dršvifwg cyiínder 223 rotaíæs; *This gaxaranteea thai the: šntærnaš cylš-rwcíea* rrxaveæ up ana çímwn in a iineaf møvemerxï bëtmfeëen åšws upp?er and tina-é iüwer cyiíndsrs 2,. :šï The Lfpward arm ciawïïwarzi :nçvarnerwís m? the: šwwtæz-nal cyflàmies* ä, Lä) t?æ pilmping wnctiarx away aišø hä äct?ønipššsrwæd by rnæarxs of a cyiisïzïær wäm :m šniegraiæii siainr caíê, ha.. a statm* cytindar Fšguma ïanaà 8; The siaatfcar cyiindïer' 33 is; :fixed ia a: sisâøf šfmmisirïg Sá which prevenis any possihišiwty* for it m retate. Qn-æ ur :nare çzæfrnarwent rrzag?eïs 35 ara æmbmëdfšßd and šxniaf?graieïvü with "the cmter surface af maa miærræaš csyišrxdær ñ m ænabše ïhæ šlntærïfxaš cyiirxder' få ti: fctata vehsn an e?æfstršcaš æuríreni äs appišæü thmugšw the síatør syiêrwaáër 33 in this enwboaiârxwæræt ïšxæ eritísë šritærrzaš ßyširxdåæs* 6 fzjnctiøns a rotar in an eiæcirøfwfxecïxaf?ëczal :matar arwfi thua íiïæ staiczr*cyšir1das\ 33 iugeihsr wštn the -ârxtarnaí syiiïniier ß wnrk as av: ešæmtrøfnechani-cst rnoinr. An :éxiærraaß smfew tšïrëacš 23.? prrzvšcfšæd of: the øuiæï surface aïihæ iraternaš ayti?âiiaf 6 wiiicšw enabifes the inïerna! cyišæwdsr E u: tis røtatæt! š?íø :aim šntëarinaí sa?rfew thrßacš 33 prcwined en 'ma inside surface si? the sïatm* nyišrwcíer 33.
When the iniernaš cylinfäær 'ü ratahës in Qrwæ dšrectšør: eg; ine cíücš-çwisa üšræcti?zrx, it rïzøves; ššnearly än a first diractm pærpencšíßuiar in its føtatiørwa! .rnøver?erit and whesw the interna! cylindfsr få rfxšaâeêz: En the nppzssitë: direction eg; the. ara-munter ciaakwiísæ cššreciion ii mcvcfä iirzæarly in a seczcand :åiåfë?tšørx perpa?äüšütwlar ta its raïatianal rnovarnant and cfppøsite- in the Fast iiríear ciiractšøn, The Lgz» and down muvernerwt äs' aüatompšâsheed hyïšxs: actíçm af :ha rmagnf?têc field which is created batween ihe. atator* cyiinder 33 and the pæårmanent» .magnæts 35 nn the saazfface af íhæ intemai cylinder å. Thus the: iirzear :nßvemßnï m* the internai cyíí?der å» is creatad by the: røïatšnr: of ïhe intar-fia! cyâírx?íëf- få reaiâzaci twythe ?açsparative engagameæ?t :betweæ-n the externa! scræw thraad 3"? cm the outar Wai! af the interraaš cyšizwder šš and the~ šniernaš wannaw threaá 36 pføvšdeü air: ihe šrrternaš surfa-ca m* ma status' cyišrwdær 33. ' ' åtíli a furthevway år: acccsmpšiåh a iinësar :ïxaväërzieënt :sf the šswterna! syišncier 6 with it is valve pšana *F is w use sn ešaatføn?eæctëarzïieai :vantar 38 prnvideai with a screw aixis 3% (saa Fšguræs Q and *ïüy än this embcciinzenï 'she interna! cylincier E :s ecgyxíppæd with za protrudšrxg flanga: 40 which G-tmrxæeâs ihg šrxïæfna! cyišrxcšar íï ta tfxe screw aàxšs 39 of thë eiafïïrømechanißa! :water 33. Tfha prøtrnstiíïwg fšarïgæ 4G :way ha a fšange -wïwich isf. cønneæïed to :ha øuïsr wait m* the» internal :zylšndær íš and is prcvëäæë with a Fame M xfviïh år: inïsïrrääí scrsw thræad which cøaperatæa: with 'she sßteuaz axis šåå. *When tha screw axe-s SQ n? tha ašsexïstraårnechafwëcai mom' 2.53 rntata-ëzš aâfmg the šniernaš sara-w threacà :af the hata: 41 un' tha pratrufåš?g Range 40, the prøtfucflifwg fšarwgæ fm wii! move' 'the intæfrrai nyíínder 6 up: er :down atiapërwï?ng on :ha ro?atinrxaš cišrectš-an nfthe screw axes 313 a? the æiactrønweašwanâsat :Heter 14 2G 30 538 251 3% The i?tërrxaš cyšíndee' n-xøv?s in a first äinear üiræcïicrxw when the faïàëctrcrnacïxarwicaš fnøtor 38 raïates im screw sxis 39 in a šïrst :íšrectšçus? :šæcïci fm :a sæazaná iineïá-aæ' direeaïšorw c?gßçamsiïæ to tha ñrst iinëar directíefw whsrii ihs a-ïectrmrïxæsšëarxiçzaš rmzâør rotatæs the scræw :sxšs 39 in :a zaemmëü Vdiræczfizzrn in mixa aitsrnatèvea: Qnšy om elecirønarz-zzzhanica! rnetør 33 rwnay oneraâe tha šrëïërrzaš cyširxäers Eša and Bb fur bath the fšrsi pump 2 aimi før the semncš paimp 3 sírraultarwefzsusšy and ai ïhe samæ veiçvciày än a first »zišraßïífzfw andihfsf?afñaææ' in a second :iirectian :apgïesšte tr: tiva: first direfctšarz (see Fšguræ 1G). in tínisš fewwåwmaiirvzerxt mwsy ena prntrwzššng ššange 4G cøsxrxemts thïaa šníernaš :zyiindars Eâb :af hcaíh pumps 2. 3. ln :a díffešre?nt æsïïbccíirrïkærxï ïwø eæiecïrøznëcizaræiczäi rfmiors 38:; ancš 3% are ræqušrsed ta upefaïæ tïzf: purxfzpirwg íïsfxciíinz?, nns än' :ha øggssfati?r? m* »tiiwæ imïefrxaš cyšiæ?aáe-r" Sa. in ïfïæ fifssï. pump 2 anci (me: for tha: nïzærz-aàiøfï m' the inïærnai cyiànzie-r' åh:- ír: 'me secarxci purnp 13 seen in Fšgaxre Q, The tmfc: ešæctramechanícaš rncatørs Eâs ara?i Ešëâšb are: cnupêed ehectjršcatíy and are: synchronšzed m each; atiwaa-r šnkheir operaiifan, møåvârëg bath šrzïerfwai syšifx?ærs Sb ïogetš?ef* and simuäïansousiy in the same direction 'sn-d at the saxfne vsešøcšây< Aiïarnaâïveây, twm aiectfønwechanàrsaí rnßtørs âëa, Sätt» :ru-sy be connscted in bath pumps: 3 as seëfn in Figure *å but eæacši siezïztf-ørvaeafwåzišsaš 'rz-xoiot' 3821 amå ïšêb operaiëä ?wæ internal myši?riers and .b mf :min pazrnps 2,. 3' in only one diremïšmn. This means that a flm: eieatrøfnecharfxícaš nwmifar Išßa amratæs the: irnïærrzaaš cytinderå Gal and 6%; tardy' in a fšrst dirasticsn ag. ihe cšawrçxfwará cišfecticwr: fzirthær imo ihe iowes' cyíindærs âša and Eb, and the :ëæjccn?š eašecfitr?ëmacharwâaai rnotcsr 38k) øperaieæ “the šntærnaš cyišfwçåærs 5:a :anü iäb øniy in the sëtzrarxd fširecišøn is, furthsr inte the upçër cyiinzier dia and 4b, which is npposiiæ in än? first xiirectšøn. in this ?rvztzødíimerxt íhe two æšíecâswnxeechanicat :nøtars Sås Išišb wii! aitærraatæ their apssixïitiörzsa, Le, when me' fiz-'sï elïæcirønwesiwan-šctaš :mäter 38:: øperaïes tha secund êiectraswwëcšwanica! :notor 3833 festa, anal vise var-aa. in an aiternaišßaæ an-:bodërxisarxt five: lšnear' rnøvaërïëañt af tm iratemai cyiiswdef' ES acczcfmpïšshed by means :ff a hyaíraaæïšc syímdær å? instead of an eiafßtrømechsfwiæai närmar Figure H). in this amtzcßfciinweni tha prøtru?ing fšarwgs. 44- ís fixed 'fo-the .hydzfauiic cyšindës' ?ï-É àncš ïhe upwarfi and dcwz?wafd _iineaf mcsvemærïts m* 'ëhe inïerñaï cyïmcier ß am created iuy the pnæshirxg am paaišing aciion :af the hyarautic cyiänciær "ïhe hydrauiiø cyiirxdef 43 iaf: üç>e:fatea% by a i-sya?rauišc: çump (nat shnwrwš prouidfeü ínsš?ie the aåvdømer: m* ïha patšsnt' which is cønnæntsd in the hydrauiäc cyïiínz?a-r 42.. ß» hyciraušic šube (noï Shawn) comments ?mïs hydrz-sušâz; mn1pt<>t§1æ íßxycšraafßliç: ayiirxcler* 42 via tuffa cønrxeactšørzs rwíppiæs 43 15 til? G 2G 538 251 prfsvšczlad en fths ïïyçirauiš?: cyïêrwazšer k: trafwåçanrï ihs hycirauššc mit bætwæen ihe fwyaímxsšís p-unwç and ñydfaušic :syzmczla?f 42. in :me æmb?dšsïwënt, oniy :sne hydrauišc cyiifzdær 42 øçzæfætes ?wæ šxxifsrfnat cyi?sruierå šäa and åh für' ïsøth thæ first :zunwp 2 anci tha sacanfà pu?wp 3 s-šmaaliarxæc?uæíy hy :means of a pratmdiag ?ange 44 unrmamed in the: šntæmat syiináers ëša små Eb mf bath purnps 2 a?cí 3.
The hyciraulšf; czyåímier 42 çmperaïes the: interna! cylšnders äa. Sh sšmuštarzeaënlslly än a first üšrectiøzw arm tharaafïa>r in a _secan Attarn-aišxfely twc: hyairayaišcr. syiífxeiefs -êâa :små 422: are grawiciæä, eæzcš: æp?raišs?ig una pump (nn-t shawnå. “Yhæ first iæycirxesxxilíc cylšncšaa' 42 m-:ay nperata a first gzrcimdifwg flafwga KK) whâøh is connected to the: intsaræaaš cyšínders 6:a <3? the 'first purnp, anfi íhe second hyfdrauiša Gyiiswcisï fišš nparaïas a Samurai p_roïf"uüàrxg íiafzgë -åü vmißif: is cønrseatenš än ine inta-rnai Gyišrwdæ-r šïb s? tha sæcamd purnp 3. The firat and ææiz-ürwd hydrauiís ciyšindæfß 42 :pperaïë said first and :mc-am iswterfwaí cyíinders ëa, fšb separatëšy, hut sinëuiianscusiy in the san-m ?iractëcn- ans; at tha samæ vsßíaßšty.
Trzæ Lista! artífisia! êxaart imgšant .r?aïy ašac: än a *fuxrthær aitesfnatïvæ ccr-*npršsa twü hyairaxxiic aylšncšefs 42: (mot sš?øwn), wtwerešn the first iwyzšraz.zlš:;z_ cyitnzißsr' 42 Qpsrates a first gsrøtrazdíng ñangæ 49 whšah is øønnæaïad to the šnífzmaš. syäiexders äs, êb mf .bath the first and the sæcurxd pumps 2, 3 'in :a fåret cšifectíøn. A seüønü hyüraulšc cyišnaàer 42 øpæratæs a sæaønd prøtfusåing fíangß 4G which is commented ts thæ šratezrrxaaš cylšïwüers 6:3, ?b of tšwfs. firsïarwld :ha æesof?d pufv?ps. 2, 3 än a sæccr?d díractíøn which äs nppøsšâe to tha first z?írsction. 'The ma: hydrauäwic çyiincšers 49., 42 altsrnzats. âïhešæ' ceçzeïrrations :man that whæn âhæ fšrst hyërazslšf: cyššnciær' 1-12 Qpëraïës 'thæ sëccmi hy?rauiíc ayäíndar ßffâresis, :and vice versa.
The txmaš-wyciraušís 'ayíirzdærs 42 nparaie eiïher by means mf :a-nšy ana hyfirauxššc pßur?p whänh n?æans tha-at they area synaïhrerzšzed ti: aactx çzti?er' sind “wave tøgether' in tha sëimæ dírectšmn and .at the same væšucëiy. m" by tm: hycirauâic punwps. ln an aštarrwatšvæ efnbødimænt :ha :Appear and iczwer :xylínöesrs 4. 5 :way 'hs- aøwlrwecteeaiso as in fann sne: smrrxpše-te cylšncšær insida vvšwïzh tha šnternaš myšiñüær å» is rnsvabša in an up- and dawn natwenwent. Fêgures 143 and *hàïb cišscša-sa an zmšfieiai heart whæræirw tm: upp?ær azruï :owær ayššrxders B are cø??estæci arxi me prßtruüíng Range af the internal mjyšínaïër protrudés thrfzugšë an Gpænmg mfhich enabkes the asp* asñzfš dawn rnøvefëments m? the prcatnmšxwg fšarxge prawíçšeaaí cm the šníarnaš cyšindaf* Wiman pøwereci hy fbs ešestrcewachanica! matar with a scrëw axis (Pigure ma), ørthe hyciraušic cyiin?er (Figufe Mila). 16 ÉLÜ _,~..ß if) 538 251 št aâsø carïtajrvïxçxïlaïeaå 'that än fsfïe ?zn-xbndšnwszswt oniy one af *che twc: fpuwwgs may ha usfæzi as a: hsart assšsï prnsíhesšs to assist and snappat a This :means thai tha paxan: wši! ape-:ratæ än parrafše?š m the paaiiarïï?s øwn hæaš-ï :aswd assisi and suppnrt a :išseaa?afí part nfïthe heart-wšthøast *the mami ti? respiace the* aïcfrnpšetæ heart. Tha msmp- may Qpæratë aiíhsr a haft vantršazzgiaf assisi (LAIAD). car right xzeratricušas* assist' devimæ (RVAD) The gsurrïping :actšmi of thef 'fßufßcharfïberfed heart wšiš now be :íeasfrrüfaedg The first and secøïncš purnçzs; 3 are ideniims! :anti ïšäaæzwszføræf: tha pumping famfçtâafw nczw dæscribed applies te bath purnps isæa Figures 12 :and 13).
Eššøczd aniers ths upgsær cšëasw?her å' a? the arïificšai š?aari impiarzà i thrmsgh ïhe šrïiëst chsmwæš 'šiïl äosatf-exí in tha ugxpaär smvsr 8_ in ans 'fx-amg rmäticr: cycše dæoxygerfatëd biond arršvss ikon: tha systenwša: fxircuši ami in .itiw såhär pumç; Qx-ygåarxagïeszi faaioacš arfšvaæ ^frar? im paltnwanary sircuštx Wher: the ugi?p?er ahs-if?bæx' S3 haä bean fišiæcà with ?iøønii me: 'vaåvæ '14- kacatëcš in tha vawe pšane “If mf' the internal' cyširadeš' få svviictwes te an open pcsštion anai the: šratærrzaš syšírïcïer ä :waves in a fšrst lšrwaar eziiremiinn 'fufth'e=r inte the “upper nyimder dä- (see Fšgure 13). ïNi-wæfï åšwæ intærnai cyšindær å :waves further inta the upgaær Gyššrïcier 4, blatmi :attached in the upper cïhamtzer šš fkwws íhrøuwgšw ihe apan *vašve '14 inczateai in me: valve plans 7* and inta the tower ci-lxarrzïuar* The ärmar mæxfemæní af *åhe inïernai eyâinçier å may izze- reaišzæd as dešsaribæd aäaeamweræ in this dsifzumærxt.
Ašïaëf the iøwer* chamhea* 122 has fšiiæ?š with micmdä; the vaive '14 tfamaieëçí än the vaëve pianæ ”ï cšcæses. The internal cyišnder 8' nczw- :waves in senmíd iinsar cišræfsïiasw further äntn the: šmwær çyiinaiær .anti pgzigshaës the bioøfšiawarcis :ha hcntïom part m* the» šQwsJ' :haf?baf- m, the šfxxfeær :lavar H (wa Fšgurws 'šíš-A). Whæn the nämnd is pusheå tüwaräs tha Eowes' cøvar *i 'I ii enâers tha bagàiiga shapæ 2G and hšts the: støpgäing surface 21, stans, :zhanges dšrëæetâøn arxci axíts åhe- lawer charïiber' '12 ïhraugfx the autšei channæš 1-3. Tha oaztšet vaivea *iiïš âracatæci ät ina orifšcie :of the oaziiet channeë :sparas zíuwing; the Qxztfšøw m' bšmïrfd, ana; theræzafter czkxâaes ta prevent bicsoai frem ræ~snïsfing tš?e šøwar chawnber 12 through the :autšet cšxanneš “S3 17

Claims (23)

538 251 PATE NTKRAV
1. Totalt konstgjort hjartimplantat (1) innefattande minst en forsta pump (2) och en andra pump (3) for att inducera ett blodflode i en kropps blodcirkulationssystem, vale pump omfattar en ovre kammare (9) med en inflodeskanal (10) och en undre kammare (12) med en utflodeskanal (13), kannetecknat av att vale pump ytterligare innefattar en ovre cylinder (4), en nedre cylinder (5) och en intern cylinder (6), namnda interna cylinder (6) är forsedd med ett ventilplan (11) och är rorligt anordnad inuti de ovre och undre cylindrarna (4, 5) sa att nar den interna cylindern (6) ror sig i en uppatgaende riktning langre in i den ovre cylindern (4), är en ventil (14) i ventilplanet (7) i en oppen position och medger ett flode av blod fran den ovre kammaren (9) till den undre kammaren (12), och nar den interna cylindern (6) ror sig i en nedatgaende riktning langre in i den nedre cylindern (5) är ventilen (14) i en stangd position och stater ut blod fran den nedre kammaren (12) genom utflodeskanalen (13).
2. Totalt konstgjort hjartimplantat enligt krav 1, van i de ovre och undre kamrarna (9, 12) ar forsedda med en flexibel inre bekladnad (15).
3. Totalt konstgjort hjartimplantat enligt krav 2, van i en yttre vagg pa den interna cylindern (6) och inre vaggar pa de ovre och nedre cylindrarna (4, 5) är forsedda med glidytor.
4. Totalt konstgjort hjartimplantat enligt nagot av kraven 1 till 3, van i utflodeskanalen (13) al- forsedd med en utflodesventil (19).
5. Totalt konstgjort hjartimplantat enligt nagot av kraven 1-4, van i en nedre del av den undre kammaren (12) ar forsedd med en pasliknande del (20).
6. Totalt konstgjort hjartimplantat enligt krav 5, van den pasliknande formen (20) i nedre delen av den undre kammaren (12) har en triangular form.
7. Totalt konstgjort hjartimplantat enligt krav 5, van i den pasliknande formen (20) i nedre delen av den undre kammaren (12) har en oval form.
8. Totalt konstgjort hjartimplantat enligt krav 5, van i den pasliknande formen (20) i nedre delen av den undre kammaren (12) har en cirkular form.
9. Totalt konstgjort hjartimplantat enligt nagot av kraven 1-8, van i den interna cylinderns (6) uppatgaende och nedatgaende rorelse astadkoms med hjalp av en drivcylinder (23) forsedd med en intern ganga (25) anordnad for att samarbeta med ett externt kugghjul (24) pa utsidan av den interna cylindern (6), namnda samverkande arrangemang medger den interna cylindern (6) att rOra sig linjart upp och ner inuti de ovre och nedre cylindrarna (4, 5). 538 251
10. Totalt konstgjort hjartimplantat enligt krav 9, van i drivcylindern (23) drivs med hjalp av en eller flera elektromekaniska motorer (17, 18) forsedda med motorkugghjul (19) anordnade att samarbeta med ett externt kugghjul anordnat pa drivcylindern (23).
11. Totalt konstgjort hjartimplantat enligt kraven 9 och 10, van i en elektromekanisk motor (26) driver drivcylindrarna (23a, 23b) i bade forsta och andra pumpen (2, 3), och alternerar mellan medsols och motsols riktning for att astadkomma de interna cylindrarnas (6a, 6b) uppat- och nedatgaende rorelser.
12. Totalt konstgjort hjartimplantat enligt kraven 9 och 10, van en forsta elektromekanisk motor (26a) driver en forsta drivcylinder (23a) i den forsta pumpen (2), och en andra elektromekanisk motor (26b) driver en andra drivcylinder (23b) i den andra pumpen (3), namnda forsta och andra elektromekaniska motorer (26a, 26b) roterar namnda forsta och andra drivcylindrar (23a, 23b) separat, men simultant i samma riktning vid samma hastighet.
13. Totalt konstgjort hjartimplantat enligt kraven 9 och 10, van i en forsta elektromekanisk motor (26a) roterar den forsta och andra drivcylindern (23a, 23b) i den forsta och andra pumpen (2, 3) i en forsta riktning, och en andra elektromekanisk motor (26b) roterar den forsta och andra drivcylindern (23a, 23b) i den forsta och andra pumpen (2, 3) i en andra riktning, de tva elektromekaniska motorerna (26a, 26b) alternerar sin drift.
14. Totalt konstgjort hjartimplantat enligt nagot av kraven 1-8, van den uppatgaende och nedatgaende rorelsen for den interna cylindern (6) mojliggors med hjalp av en stator cylinder (33) forsedd med en intern ganga (36) anordnad att samverka med en extern ganga (37) pa den interna cylindern (6), namnda samverkande arrangemang mojliggor kir den interna cylindern (6) att rOra sig linjart upp och ner inuti den ovre och nedre cylindern (4, 5).
15. Totalt konstgjort hjartimplantat enligt nagot av kraven 1-8, van i de ovre cylindrarna (4) och nedre cylindrarna (5) i vane pump (2, 3) är sammankopplade och bildar en hel cylinder inuti vilken den interna cylindern (6) är rorlig i en upp-och nedatgaende rorelse.
16. Totalt konstgjort hjartimplantat enligt nagot av kraven 1-8 eller 15, van i den uppatgaende och nedatgaende rorelsen hos den interna cylindern (6) mojliggors med hjalp av en utstickande flans (40) pa den interna cylindern (6) for samverkan med en elektromekanisk motor (38) forsedd med en skruvaxel (39), namnda 538 251 samverkande arrangemang mojliggor for den interna cylindern (6) att rora sig linjart upp och ner inuti de ovre och nedre cylindrarna (4, 5).
17. Totalt konstgjort hjartimplantat enligt krav 16, van i en elektromekanisk motor (38) forsedd med en skruvaxel (39) samverkar med en utstickande flans (40) som är kopplad till de interna cylindrarna (6a, 6b) i bade den forsta (2) och den andra (3) pumpen, namnda enda elektromekaniska motor (38) driver b5da interna cylindrarna (6a, 6b) simultant och med samma hastighet i en forsta riktning och darefter i en andra riktning motsatt den forsta riktningen.
18. Totalt konstgjort hjartimplantat enligt krav 16, van i en forsta elektromekanisk motor (38a) driver en forsta utstickande flans (40a) som är kopplad till den interna cylindern (6a) i den fOrsta pumpen (2), och en andra elektromekanisk motor (38b) driver en andra utstickande flans (40b) som är kopplad till den interna cylindern (6b) i den andra pumpen (3), namnda forsta och andra elektromekaniska motor (38a, 38b) driver namnda forsta och andra interna cylindrar (6a, 6b) separat, men simultant i samma riktning och med samma hastighet.
19. Totalt konstgjort hjartimplantat enligt krav 16, omfattande tv5 elektromekaniska motorer (38a, 38b) van i den forsta elektromekaniska motorn (38a) driver en forsta utstickande flans (40a) som är kopplad till de interna cylindrarna (6a, 6b) i den forsta och andra pumpen (2, 3) i en forsta riktning, och den andra elektromekaniska motorn (38b) driver en andra utstickande flans (40b) som är kopplad till de interna cylindrarna (6a, 6b) i den fOrsta och andra pumpen (2, 3) i en andra riktning mottsatt till den forsta riktningen, de tv5 elektromekaniska motorerna altemerar driften.
20. Totalt konstgjort hjartimplantat enligt nagot av kraven 1-8 och 15, van i den interna cylinderns (6) uppAtgAende och nedatgAende rorelse mojliggors med hjalp av en hydraulisk cylinder (42) anordnad att samverka med en utstickande flans (44) kopplad till den interna cylindern (6), namnda samverkande arrangemang mojliggor for den interna cylindern att rora sig linjart upp och ner inuti de ovre och undre cylindrarna (4, 5).
21. Totalt konstgjort hjartimplantat enligt krav 20, omfattande en hydraulisk cylinder (42), van i namnda hydrauliska cylinder (42) driver en utstickande flans (40) som an kopplad till bada interna cylindrarna(6a, 6b) i !Dada pumpama (2, 3), namnda hydrauliska cylinder (42) driver de interna cylindrarna (6a, 6b) simultant i en forsta riktning och darefter i en andra riktning som är motsatt den forsta riktningen. 538 251
22. Totalt konstgjort hjartimplantat enligt krav 20, omfattande tva hydrauliska cylindrar (42a, 42b), van i den forsta hydrauliska cylindern (42a) driver en forsta utstickande flans (40a) som är kopplad till !Dada interna cylindrarna (6a, 6b) i bade forsta och andra pumpen (2, 3) i en forsta riktning, och den andra hydrauliska cylindern (42b) driver en andra utstickande flans (40b) som är kopplad till de interna cylindrarna (6a, 6b) i bade forsta och andra pumpen (2, 3) i en andra riktning som är motsatt till den forsta riktningen, de tva hydrauliska cylindrarna (42a, 42b) alternerar driften.
23. Totalt konstgjort hjartimplantat enligt krav 20, omfattande tva hydrauliska cylindrar (42a, 42b), van i den forsta hydrauliska cylindern (42a) driver en forsta utstickande flans (40) som är kopplad till den interna cylindern (6a) i den forsta pumpen (2), och den andra hydrauliska cylindern (42b) driver en andra utstickandeflans (40) som är kopplad till den interna cylindern (6b) i den andra pumpen (3), namnda forsta och andra hydrauliska cylindrar (42a, 42b) driver namnda forsta och andra interna cylindrar (6a, 6b) separat, men simultant i samma riktning och med samma hastighet. 538 251 1/13 z41;) ‹c„. 538 251 2/13 t .7 4-3: ( .. 3b 1 1 538 251 3/13 11 538 251 4/13 C) Cr') kr) c,C;) Cr) 538 251 5113
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EP15742032.4A EP3177335B8 (en) 2014-08-07 2015-07-27 Blood pumping device
US15/501,491 US11123543B2 (en) 2014-08-07 2015-07-27 Blood pumping device
EP19206601.7A EP3622979B1 (en) 2014-08-07 2015-07-27 Blood pumping device
PCT/EP2015/067135 WO2016020219A1 (en) 2014-08-07 2015-07-27 Blood pumping device
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EP3177335B1 (en) 2020-03-04
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