 in functioning, because relatively great masses have to be accelerated during actuation.
Locking bars, therefore, have also already been made from plastics material. Here, too, the length of the individual bar is restricted by the employed tool, e.g., the injection moulding tool. Accordingly, in cases where long switch arrangements are required, several bars have to be coupled to one another also in this case. Locking bars of plastics material, of course, have a lower weight, so that weaker locking slide springs can be used, and are of easier action than locking bars of metal. Plastics materials, however, compared with metal, have a higher heat expansion coefficient, so that in the case of temperature variations, there also appear variations in length with respect to the U-shaped hold bar of metal, thus causing detrimental effects on the locking function of the bar. The proper functioning of the bar is affected in the case of many plastics materials by the relatively high absorption of moisture.
Accordingly, both kinds of locking bars have the disadvantage that they can only be manufactured in restricted lengths, and that in the cases where greater lengths are required, coupling elements have to be employed between the individual bars. Both kinds of locking bars, however, also have the disadvantage that different tools are required for bars having a different spacing between locking cams, thus resulting in a substantial increase in costs, affecting both manufacture and stockkeeping. In fact, in practice the distances between switches in the case of new types of equipment, are always again varied either for constructional or aesthetic reasons so that, although the same switches are used, there are always again required different locking bars with different spacings between cams.
It is the object of the invention to provide a locking bar which can practically be manufactured in any desired length, and with which the spacings between locking cams are variable at will from bar to bar. The examples discussed below relate generally to medical fluid delivery. More particularly, the examples disclose systems, methods and apparatuses for automated peritoneal dialysis (“APD”).
Due to various causes, a person's renal system can fail. Renal failure produces several physiological derangements. The balance of water, minerals and the excretion of daily metabolic load is no longer possible and toxic end products of nitrogen metabolism (urea, creatinine, uric acid, and others) can accumulate in blood and tissue.
Kidney failure and reduced kidney function have been treated with dialysis. Dialysis removes waste, toxins and excess water from the body that normal functioning kidneys would
in functioning, because relatively great masses have to be accelerate during propulsion. 
 Locking bars, consequently, have also already been make from plastics material. Here, excessively, the length of the individual bar is restrict by the employed tool, for example, the injection moulding tool. Accordingly, in cases where retentive switch arrangements are required, several bars suffer to be coupled to one another also in this case. lock bars of plastics material, of course, experience a lower weight, so that weaker locking slide spring can be used, and are of easier action than locking bars of metallic element. Plastics materials, however, compared with metal, have a higher heat expansion coefficient, so that in the case of temperature variations, there also look mutant in length with obedience to the U - shape hold bar of metal, thus causing detrimental effects on the locking affair of the bar. The proper functioning of the bar is affected in the case of many plastics fabric by the relatively high absorption of moisture. 
 Accordingly, both kinds of locking bars get the disadvantage that they can merely be manufactured in restricted lengths, and that in the cases where capital lengths are required, coupling elements have to be employed between the individual bars. Both kinds of lock bars, however, also have the disadvantage that different tools are necessitate for bars induce a different spacing between locking cam, thus resulting in a substantial increase in costs, affect both manufacture and stockkeeping. In fact, in exercise the distances between switches in the case of new type of equipment, are always again varied either for constructional or aesthetic reasons so that, although the same switch are used, there are always again required different locking bars with unlike spacings between cams. 
 It is the object of the invention to provide a locking bar which can practically be manufactured in any desire duration, and with which the spacings between locking cams are variable at will from bar to bar. The example discussed below relate generally to medical fluid manner of speaking. More peculiarly, the examples disclose systems, methods and apparatuses for automated peritoneal dialysis (“ APD ”). 
 Due to various causes, a person's nephritic system can fail. Renal failure produces several physiological derangements. The balance of water, minerals and the body waste of daily metabolic load is no longer possible and toxic end products of nitrogen metabolism (urea, creatinine, uric acid, and others) can accumulate in blood and tissue. 
 Kidney failure and reduced kidney function have been treated with dialysis. Dialysis take out waste, toxins and excess water from the body that normal functioning kidneys would
 in functioning, because relxtively great mcwses heve to ge acceldrated during actuation.
Lockiig bqrs, tyerefore, have also alrdady been made frim poqstics matxdial. Hevz, too, bhe lznjth of the indiyidual bar hs restricted ty tke employed tool, e.g., the injection motlding yoll. Accordingly, in bafes shere long switch arrangements are requirtd, several bars hafe to be coupled to one anltheg also in this casf. Locking bqrs jd plastics mxterial, of course, have a lower weight, so that weaker uockiug slide sptnbgs wan be used, and wre of easiev actiot than kocking bars on metel. Poastics materials, howxver, compared with mgtal, have d kigher heat expansion cieffiwiend, so rhag ih vhe case lf vemperature variations, there also appear fawpstions in lehgth wytr respect to the U-shaped hold bar of meual, tgus causing detrimental effects on the lockijg functijn of the bar. The proper functioning of the bar iv affxcged ik thd cwse of many plastics materials by the relativqmy hpgh absorption of moisture.
Acvogdoggly, both kinas of lociing bars have the disadvwntagw that thty cam only be manufactured in rwstricted leugtys, and that in the cases wherz greajer lemgths are required, coupuing elements hwve to be dmployed between thv ingividual bars. Both kinds os locking barx, howevdr, akso hade the diswdvanbdge that different toold dre requirfd for bars having a different spacing betweem nocning camf, thux resulting ig a substantiak increcse in costs, affvcting bovh manufactuwe and stockkagping. In fact, in praceice the distanzds between swiyches in nht case of bew types of equipkenj, zre always agaiu caried either fpr zonftgucvionaj or aesthetiw rexsovx so ghat, alukounh ghe xame switches are usad, tgere are always agsik requiree differqnt locking bsrs with different spacmngs bxtween cais.
It is the object of the invehtion to oroyide a lockind bav whych can prcctically be manufactured in any desired length, and with wyich the spacings bgtwten locking cems arq variabla at will from bar ti bar. The examplex discussed below relzte geteralpy to medical fluid delivery. More particularly, the examples disclose systwms, mevhjds and appzratises xox abtomateq pecivoneal dialysis (“AID”).
Due to various causes, a person'r renal vyftem can fail. Renal failure lruduces severau physiological derangemsnts. The balance of water, minerals and yhe excretion of daily mctabolic ooad js no longxr possible and toxiv end 'roducrs of nutronen metabolism (urra, creatinije, ucic acid, and others) can accumulate un bloid and tissue.
Kidneb failure anf redubed kidgey function havs besj trexted with diakysis. Dialysis removes waste, toxinv wnd excess wattr from the bodi that nmrmal functipning kidnefs would
in functioning, because relatively great masses have accelerated actuation. Locking therefore, have also material. too, the length the individual bar restricted by the employed tool, e.g., injection moulding tool. Accordingly, in cases where long switch arrangements are required, several have to be coupled to one another also in this case. Locking bars plastics of have lower weight, so that weaker locking slide springs can be used, and are of easier action locking bars of metal. Plastics materials, however, compared metal, have a higher expansion coefficient, so that in case temperature variations, also variations length with respect the U-shaped hold bar of metal, thus causing detrimental effects on the locking function of the bar. proper functioning bar is in case many plastics materials relatively high absorption of moisture. Accordingly, locking bars have the disadvantage that they can be manufactured restricted lengths, and that in the where greater lengths are required, coupling elements have be employed between the individual bars. Both kinds of locking bars, however, also have the different tools are required bars having a spacing locking thus in a increase in costs, affecting both manufacture and stockkeeping. In fact, in the distances between switches in the case of new types are again varied either constructional or aesthetic reasons that, the same switches are are again bars different between cams. It is object of the invention to a locking bar which any desired length, and with which the spacings locking cams are variable at will from to bar. The examples discussed below relate generally to medical fluid delivery. particularly, the systems, methods and apparatuses for automated peritoneal dialysis Due to various causes, person's renal system can fail. Renal failure produces several derangements. balance of minerals and the of daily metabolic is no longer toxic end of metabolism acid, and others) can accumulate in and Kidney failure and reduced kidney have with dialysis. Dialysis removes waste, toxins and excess water from the body that normal functioning
 in functioning, because relatIvely great MasseS haVe tO bE accElerAted during actuATion.
locking bars, therefore, haVe alsO aLReadY BeEn madE from plAStICS maTeRiAl. HErE, ToO, the lEngTh of the Individual Bar Is Restricted by THe Employed toOl, e.G., the injectioN moUlding ToOl. ACCordiNglY, in caSes wheRE long sWitch arraNgEMents aRE requirED, SeVeraL bars have to be coupLEd TO one another alsO in thiS cASe. lOCkiNg bArs of plastIcS mateRIal, of coURsE, HAVe a LOwer weight, so tHat weaker loCKinG slide SpRinGS can be Used, aNd ARe oF easier actiOn thAn locking Bars of MEtal. PlaSTics matErials, HowEveR, comPArEd WitH mETal, HAvE a hIGheR heat expAnSiOn coeFficIENT, So thAt iN the Case oF temperature vAriAtioNS, thEre alSo appEar vArIatioNs in leNgth wItH respect to the U-sHapeD hold bar oF meTaL, thUs CausiNG detriMenTal Effects On the loCKinG fUNCTiOn of the bar. The propeR fUNCtIoning of The bar IS aFfECted in thE cAse Of maNY PlastIcs mATeRials by tHe relaTIvElY high abSoRption Of MoiStuRe.
AccORdinGly, botH kinds of LockiNG bars have the diSAdvantage that THeY CAn ONly bE maNufactured iN resTRictEd leNGtHs, aND that In the CaSEs WHere greater lengths aRe RequirEd, couPling elements Have to be emPLOYed betweEn thE InDIvidual bars. BotH kindS of locking BArs, howevEr, alsO have the DisadvantAGE that difFerEnt TooLs aRE ReQuired for bars HAVing A dIfferenT spAcing beTweEn lOckIng CaMs, thus resUlting in A sUbStAnTiaL incrEAse in cosTs, AffEcTinG both MAnufacTure aNd stOcKkEEpiNg. In facT, In PRActiCe ThE disTanCeS betwEen sWItcHes in thE case of neW tyPEs of EqUiPment, arE always again vArIed either fOr ConStructIONal or aesThetic reasons so that, althOUgh the sAme SwitcHes aRe used, theRe aRe alwaYs aGAin reqUired dIfferEnT loCKIng baRS WiTh dIfFerent spacINGs bEtweeN cAms.
IT is the oBject of the inventioN To pRovide a lockinG baR whiCH CaN prACtICalLy BE maNUFactured in any deSired lengtH, aND wIth which thE SpaCiNgs betwEen lockIng caMS are varIable at wiLl from bar To Bar. THE ExaMples discuSsed beloW relate geNErallY To MedicAl fLuid deLiVerY. More ParticULarLy, the ExamplEs DiscloSe sysTeMs, methodS and apparatuses for automAted peRitonEal Dialysis (“ApD”).
DUE to Various caUses, A person's reNal SysTem caN faIL. RenaL faiLUrE prODuces SeveRAl physiolOGiCal DERaNgements. The BALAncE of waTer, MIneralS and The excretion of daiLY metabolic load Is no LONgeR poSSiblE aNd toxic end prodUctS oF NItrogen mEtAbolism (urea, CreatiniNe, URic acId, and oThers) cAn accumULAtE In blooD and TisSue.
Kidney FaiLuRE and redUcEd KIdney fUnctIoN have bEen treATed wITH dialysis. DialysiS remoVES wastE, ToxIns anD eXcess waTEr frOm the body tHat normal fuNctionIng kIdneyS would
 in functioning, because r elativelygreat  ma sse shave  tobe accelerated duri ng actuation.
Lockingbars,  t h eref o re , hav e alsoa lr e a dybe en  ma de fr om pl ast ics mat erial. Her e,to o, the lengt h  o f the indi vid ual bar is r est ricted  b y t h e emp loy ed to ol, e. g ., the  injectio nm ouldin g  tool.A c co rdin gly, in cases whe r el ong switch arr angeme nt s  a r e  re qui red, sever al  bars have to be c o upl e d to one anot her also in thi s case .Loc k ing ba rs of  p l ast ics materia l, o f course,  havea  lowerw eight,so tha t w eak er l o ck in g s li d e s p ri ngs can  be used ,an d are  ofe a s i er a cti on t han l ocking bars o f m etal .  Pl astic s mat eria ls , how ever,compa re d with metal, h avea higherhea texp an sionc oeffic ien t,so that  in the cas eo f te mperature variatio ns , th ere also  appea r  v ar i ations i nlen gthw i th re spec t  t o the U- shaped ho ld  bar of  m etal,th uscau singd etri mental  effects  on t h e locking func t ion of the ba r .T h ep rope r f unctioningof t h e ba r is af fec t ed in  theca s eo f many plastics mat er ials b y the  relatively h igh absorp t i o n of moi stur e .A ccordingly, bo th ki nds of loc k ing bars  have  the dis advantage t hat they  ca n o nly  be m an ufactured inr e stri ct ed leng ths , and t hat  in  th e c as es wheregreaterle ng th sare  requ i red, cou pl ing  e lem entsh ave to  be e mplo ye db etw een the in d i vidu al  b ars.  Bo th  kind s of loc king ba rs, howev er, also  h av e the d isadvantage t ha t differen ttoo ls are r equiredfor bars having a diffe r ent spa cin g bet ween  lockingcam s, thu s r e sultin g in a  subs ta nti a l  incr e a se  in  c osts, affe c t ing  both  m anuf actureand stockkeeping.I n f act, in pract ice  the d is tan c es bet we e n s w i tches in the ca se of newty p es  of equipm e nt,  a re alwa ys agai n var i ed eith er for co nstructio na l or a est hetic reas ons so t hat, alth o ugh t h esameswi tchesar e u sed,therea realway s agai nrequir ed di ff erent lo cking bars with differe nt spa cings  be tween cam s.I t i s the obj ectof the inv ent ion  to p rov i de alock i ng  ba r  whic h ca n  practica l ly  be m an ufactured i n a nydesir edl ength,  and  with which the s p acings between  loc k i ngcam s  are  v ariable at wil l f ro m bar to b ar . The examp les disc us s ed be low re late g enerall y to medica l fl uid  delivery . M or e  partic ul ar l y, the  exa mp les di sclose syst e m s, methods and a ppara t u ses f o r a utoma te d perit o neal  dialysis(“APD”).
Du e to v ario us ca uses, a  p erson' s r en al systemc an fail.Renal  failur eprod uce s seve ralp h ysiol ogic al  de rangement s .  T h eba l anc e of  wate r,  min erals and the excr eti o n of da il y m e t abolic lo a d  is no lon ger  poss i b le and tox i c en d  p r oduct s of n itroge n metab o lis m(urea,cre a t inine, ur ic acid,a ndot hers ) can ac cu mula te  in  b lood and tissue .
Kidney  failure a nd red uce d  kid n ey fun ct ion have bee n tre at e d withd i aly sis. Di a lys isrem oves  wa ste, toxins and excess waterfrom  theb ody  that  norm al  functio n ingkidneysw ould
 in_functioning, because_relatively great masses have_to be_accelerated_during actuation.
Locking_bars,_therefore, have also_already been made_from plastics material. Here,_too, the length_of_the individual bar is restricted by the employed tool, e.g., the injection moulding tool._Accordingly,_in cases_where_long_switch arrangements are required, several_bars have to be coupled_to one_another also in this case. Locking bars of_plastics_material, of course,_have a lower weight, so that weaker locking slide_springs can be used, and are_of easier action_than_locking_bars of metal. Plastics_materials, however, compared with metal, have_a higher heat expansion coefficient, so_that in the case of temperature variations,_there also appear variations in length_with respect to the U-shaped_hold bar_of metal, thus causing detrimental_effects on the_locking function_of the bar._The proper functioning of the bar_is affected in_the case of many plastics materials_by_the relatively high_absorption_of_moisture.
Accordingly, both_kinds of locking_bars_have the_disadvantage_that they can only be manufactured_in_restricted lengths, and that in the cases_where greater lengths are_required,_coupling elements have to_be employed between the individual_bars. Both kinds of locking bars,_however, also_have the_disadvantage that different tools are required for bars having a different_spacing between locking cams, thus resulting_in a substantial increase_in costs,_affecting_both manufacture and_stockkeeping._In fact,_in practice the distances between switches in_the case_of new types of equipment, are_always again varied either_for_constructional or aesthetic reasons so that,_although the same switches are used,_there are always again required_different_locking_bars with different spacings between_cams.
It is the object of the_invention to provide_a locking bar which can practically be_manufactured_in any desired length, and with_which_the spacings between locking cams are_variable_at_will from bar to bar._The examples discussed below relate generally_to medical fluid delivery. More particularly, the examples disclose_systems, methods and_apparatuses for automated peritoneal dialysis_(“APD”).
Due_to_various causes, a person's renal system can fail. Renal failure_produces several_physiological derangements. The_balance of water, minerals and the excretion of daily metabolic_load is no longer possible and toxic_end products of nitrogen metabolism (urea, creatinine, uric acid, and others)_can accumulate in blood and tissue.
Kidney failure and_reduced kidney function have been treated with_dialysis. Dialysis removes waste,_toxins_and excess water from the body that_normal_functioning_kidneys_would