CA2036776A1 - Hose - Google Patents

Abstract

911102 RV4 LUDR 3.0-045 ABSTRACT OF THE DISCLOSURE

The invention is directed to a composite hose and a sheeting bag containing same having an inner segment of predetermined thickness, which has an outer surface and an inner surface which has, over its entire length an inner cross-section of substantially constant dimensions extending the entire length of this outer surface are at least two substantially wedge-shaped shaped protrusions each of which hasan upper and a lower surface. The thinner portion of these wedges is at the outer, or distal end. The proximal ends, vicinal to the outer circumferential contour of the inner segment are shaped to mate with and in fact are being mated with this outer surface.

Description

7--'7i~1 7'07 ~3EP~TEDIN_FRX
P.4 911102 RV4 1 LUDR 3.0-045 ~ ' The Inv~ntic~n Is dlre~ed to a hose, for use in a bag Sor phy~lological fluids, which has a con tant, tor example substantially clrcular Inner cro~c~section along the I
~ntlrs langth ot sald hosrJ.

DESGRIPTION OF THE PRIO~ ART
Hoses of the prlor art have been known lor a long time. Conventlonally, the wall thickness of the hose is of thc same dimension, so that a hose has a cylindrical outsr form. ~his format has substantlal dlsadvantages whan the hose Is to b~
10 combinad wlth a containar or In a vessel whlch is constructed In a substantially pansl form or sheet-like manner. Whil~ It Is posslbl6 to provid~ thc walls of such a contalner wlth a recess through whlch the hose may be passed, in ord3r to attachths hoss and seal It thar~to, It Is neverthclssR necessary to provide a furth~r flange-llke constructlon portlon. Such an arrangement Is exp~nslve and compllcated and 15 has th~ furth~r disadvanta~s that tha hose must g~n~rally be lad pcrpandicularly out of thra wall of the contalner or vessel.

In partlcular, In the production of rnedlcal shaeting bags, it would desirable to attach the hose, during the production of such a sheeting bag, to the vicinity of the 20 welding seam whlch connects both parts ot the sheeting ba~ to each other. It is clear that a hosa with a cylindrical outer contour gives rlsa to substantlal dimculUes in production, slnc6 it Is nacessary to Iqad th~ shset-likc mat~rial of ths bag substan1laily half-way around th~ clrcumference of the hose and thereafter, to bend It substantlally through a rl~jht angle so that both of ~he halves o~ th~ sheetlng bag 25 ar~ conn~ctqd with aach other In th6 rcst of edg~ arca.

In thls productlon mode, ~wo substanUally serious problems arlse. On~
problom rcsid~s ~hcr~ln that It is nct simplc t~ combins thc sheeting material in the --~ 2EPRTE~IN_FflX
P.5 ~11102 RV4 2 ~ ? LU~R 3.0-045 approprlately clos~ rnanner with the half outer clrcum~er~nce of the hose. ~xpensiva apparatuQ is ncceS8ary In ordar to press the sheetin~ material against tha hose and wcld 1~ thoreto. A furth6r disadvantag~ 110~ herein that in the turning area In which the sheet materlai is bent and led away from the plane of bag, degrees of bHnding of5 such a magnltude ar~ requlred, that the dangar exists that in tha turnlng araaprox)matc to th~ wall of the hosc, a small opcn space would r~main. Th6r~fora, it is necessary to take further measur~s to ensure that ~he hos9 is entirely rombln6d with tha ba~. A turther disadvantage lies thereln that tha planar lle of the two shee~s of the shcet bag 18 SO substantially infiu~nc~d by the provislon of the hoss, that buckllng 10 can occur In the ah~eting material, whlch can lead to th~ prsv~ntion of a tlght ~ormatlon oi th6 sdgo seam~

The art has proposed s3veral solution~ which how~ver do not, together, overcome the aforam3ntloned disadvantages.
U.S. Paten~ 4,393,909 discloses that an exlt of a hose ~rom a sh~eting bag in an angular directlon may be achiaved by means of a speclal flange element While,by thls means It i~ possible to avoid the sldewards protruslon of the hosa, the problem of combinatlon of the flange wlth the bag mat~rlal Is not re~olved.
In WIP0 Publication, W083/00699, thcre is disclosed th~ connsction of a hosa to a bag In whlch, at ths ~dge areas of the bag, an adaptor is formed Irom ths ~heetlng mat0rial of th~ bag with which tha hose itsclf can than be combin2d. Such a soluUon i5 very complex and also expenslve, since In tha form~tion of the bag, that 25 Is to say, th~ combination of the two shee~ of ths bag, the tube-shaped branching Icad must additlonally bs formed, to which the hos~ can bs attachad.

13 '91 17:09 E3EPRTEDIN_FFiX P.6 , 911102 FlV4 3 LUDR 3.0-045 In W0~2/04016, there is shown a flange piece which similarly i5 form~d as a part 9t the ba~ wall and to which ths hoss may be a~tached. Thi~ give~ rise to the sam3 probl~m3 a~ In W083/00699.

U.S. Pat~nt 4,51~,977 disclos~s an In~ertion means which is w~ldable between the two halves of the bag. The insert is provlded with a plurallty of r~c~ssas whose opanlngs comprise a flange to which the hosc may be attached. Whila by this means tha inser~ l~ constructed In such a way that it may be placed simply between th~ two ~ha~tlng portions, the In~ert iSself however is constructed in such a ~0 compllcated manner that a substantial effort is requlred in both its cons~rucUon as well a-~ ~or the attachment of the hose. It 18 ther~ore partlcularly dlsadvantageous that a lar~e number of diffarent provislon and combination step~ are necessary whlch Increa~e th~ compl~xi~y of productlon and whlch also provlde a plurallty of problems r~latlng to the deslr6d Intesrlty of the saal.
German publlshed AppllcaUon DE-OS 31 45 303 is dlrected to a flat hose lead ~ormed from two shen~-like strlp~ o~ a flexible materlal In whlch the upper and the lower cegmant are permanently and Immovably connected to suppo~ means of predetermined width whlch torm a hollow path. Thls hosa guide is not sultable ~or 20 U8~ In bags. The same i8 true for the hose lead which Is disclo~ed In German publlshed AppllcaUon DE-OS 35 02 445.

Th~ purpo-qe ot the Inventlon i~ to provlde a hose of the type known In the 25 prlor art which, by the US9 ot a slmpla constr~ctlon and slmple maans ot productlon, avold~ the known problcms of the prior art and whlch Is partlcularly sultabla tor weldlng In~o the edge seam ot sheeting bag~, whlle avolding the disadvantages known to the art.

--~9; . 7 10 ~EPf~TE3IN_FflX P . 7 : ~ ? ~ ~`
9~1102 RV4 4 LUDR 3.0-045 Thl~ particular problem is solved thsreby ~.at the walls ot the hosa are provided wlth a palr of substantially wed~e shap~d protruslons pointlng In mutually opposite dlrectlons.

Tha inventlon is dlrectsd to a compo~itg hose and a shaetin~ bag utillztng same. The hose h~vs an Inner segmant ot predetermlned thlckness, whlch has an outar surface and an Innar ~urface, and which has, over Its sntire length an innar cross-sactlon of substant~ally constant dlmenslons. Extending the entire langth of thls outet surfaca ara at l~ast two substantially wedge-shaped shap~d protruslons each 10 of which has an upper and a lower surface. The thlnner portion of these wedges is at tha outer, or distal end. The proximal ends, viclnal to th~ outer clrcumter~ntial contour of th0 Inner sQgmcnt are shapad lo mate with and In fact are bsing matedwlth this outer ~utface.

Sultably, the hose elemen~ may additlonally comprise ~hin sheet-shaped edge ~trip-Q ints~rated with at least one surface of aach of sald protrusions anci extending bayond tholr frea dlstal edga~.

While tha invenUon ia no~ llmlted thereto, U Is deslrabl6 that the outer contour20 of the Inner segmant Is cyllndrlcal and the upp~r and lower sur~aces ol tha protruslons proximate to sa~d outer surface of the Inner segmen~ ara substantially tangenUal thereto.

The overall cross-sectlon of the hosa can vary within tha general parameters 25 ol the wedge shape. 1~ may, Sor sxampla havs tha shape of a substanti~lly biconvex l~n~ or b~ of a substantially elllptlcal ovarall cross~saction.

~3 Dl 17~ EPRTEI:IN_FRX P. a 911~02 RV4 5 - LUi)R 3.0-045 The nature of th~ surfaces ot the composite may ~acillta~e int~gration with the matarlal ot the bag into whlch It Is to be ~et. Where the outer surface pr~sented by sald compo~lte hose comprlses an additlonal sheet, It may bs made of a materlal weldable with a ~ag formed of at least two sheets of polymerlc material. Simllarly, 5 the inner ~urface of the inner ssgment may comprise a material weldable wlth apolym~rlc connecting means. In a furthsr modiRcation, there Is provided a blnding materiai layer to least one of the sald Inner and o~ter sur~aces of sald inner segment.

The Inventlon Is also dlrectad to a ba~ arrangement ~or the storing and 10 admlnlstratlon of physlologlcally compatlblq flulds comprisin~ a bag membsr formed trom at l~ast two she~s of mutually weld~d poiymerlc materlal, havin~ at least one polymeric attachm3nt portion comprlslng, ~ultably, at least a composlte hose element as d0scrib0d abov~, welded into the seam formed by tha weld of said bag, having th0 prox~mal 0nd thereof openlng Into sald bag and the distal end op~nlng to the15 ~xterior of sald bag. If des~red, a conn~ctlng element may also be attached to the dlstai end of salo hose element.

The hose of the pres~nt Invention has substantial advantages. Slnce the wedge-shapqd protruslons ar~ provlded to the walls of the hose whlch sxtend along 20 the entlre length of sald hose, It can be attached a~ a desirad place to a partlcular containsr such a-~ a sheet bag. It 18 not necessa~ that the hose, as was the case In the prlor art, begins and ends In th0 locatlon of ths wall of the sh~st bag. The hose can thus, lor exampl~, be utillz~d as a fllling or emptying hose whlch protrudes over a consldsrable dlstance into the Interior of the bag, as well as out of It.
A furth~r, partlcular advantag~ of th0 Inventlon n85 ther~in, that no addltionalcon3truction means such as a flan3e or the llke are necessary. On the one hand, the productlon costs ar~ lowered because of the lesser number o~ construction parts --m~ 17 ~ ~EPf~TEDIN_FPX P.9 ~ : ~? I j ~
911102 RY4 ~ LUDR 3.0-045 and on th~ othsr hand, a low~r numb~r of ~am ~urfaccs are required so that the problems anclllary to weldlng and welt Int~ri~ are substantlally r0duced, The two sldaward~ directed ~egment3 o~ the inventlon make it posslbla to lay S the material oS the conta~ner or vesssl onto the hose without sharp bendlng or th~
lik~, ~o that thc constructlon on th0 ona hand Is slmpllfied and on the other, the planar lie of the sh~t ma~erial is only mlnlmally dlsturb~d.

The invention thus makas It posslble to completely avoid the buckllng whlch 10 mlght occur In the area of ths rest of the edge seam by means ol these dis~ortlon~
or dl8placom~nt~, The hose producsd in accordanc0 wlth thi~ invantion is particular suitabl~ for u~e In she~ting bag~, The outwardly dlrected wedga-shap~d protru.~lons can alther 15 lle dlrecUy opposlta each other ~o that a ~ubstanUally flat formatlon of the bag 1~
po~slbl~ or, on the other hand, It may also be provited ~hat the wedge-4haped protruslons are so lormed that on the one hand an evan base llns Is provided, whlle the upper sur~ace o~ the hose is bow-shaped, ~or axample, as a partlal cylindrical coaUng. In both case~, it Is possible to fit tha ilose to the deslrsd insertlon 20 requlr0m0nts.

The w~dge-shapsd torm of the protruslon as W311 as th~ outwardly dlrect~d thlnnln~ thereot makas It po3slbls to creat~ a tran~iUon betwe~n tha protruslons and the r~maining segment o~ th~ cd~e seam practlcally wi~hout interference, so that25 tho~e problams known to the art whlch appear at the edge~, namely th~ space~ and Iack ot s~alln~ can be entirely avolded.

4 E~EPRT~DIN~F~X
P.10 911102 RV4 ~ LUDPI 3 0-945 In a particularly deslrad embodlment o~ the inv0ntlon, it is provlded that tha protruslon, at Its fre~ edg~, ha~ a shaet-shapsd end edg~ ~rlp of mlnlmal thicknes~.
Thh ~dgo strip parmi~ a troubla-tree combtnatlon v~h the material of the container, tor ~xample, the shee~ bag by walding or ~lulng In a slmllarly highly desirable dev~lopment of the hose of the present invenUon,it 18 pro~ldad that the outer contour of the hoQ~ 18 cyllndrlcal and that the protrusion is attachqd tangr~ntlally to ~he outer cyllndrlcal contour The remalnder, cf the wall area ot the hose not provided with the protrusion can, In the conventional way, be 10 provid~d with a constant cross-s~ction. Th~ tangential transition to tha protru~ion p~rmit~ the smooth contact wlth th~ sheat bag Thc outer contour of the hosa can bs a lens~shaped or have an alliptlcal cro&s-s6ction, Ths width o~ th~ hose rela~iv~ to Its halght Is variable to a substantial 1~ degree and can be adapted to ths partlcular r~quir~ments, for ~xample, the ductllity of the mat~rlal of the vessel or ths bag.

Praferably, th~ hose Is manufactured of a materlal which Is weldabls with the sheet ba~; the hose can however 80 madfl, ~th respect to cholce of materlal, so that 20 It can be connected ~th an addltlonal connector plece whlch Is Intended ~or a ~urth~r usr,l, Furthermore, it is possible to provide the hose, on ~ts ou~er sur~ace, with a layer ot blndlng matarlal, whereln It 18 desirable, as 18 usual, to uttllze two different matarlalQ
Includlng polyvlnyl chlorids, polyethylene, polypropylene, polyamidas and th~ like for ths hosa and ~ethyltvinyl) alcohoi copolymer (PEVA), PVC, or polyur~than~ for th~
25 binding material, In d6pandcnc~ upon ~ha ultlmate use ol the hose, it is posslbl~ to matoh its matsrial, In ths slmplest way, to tha Int~nded us0s so that, lor example, It is possibb to comblne the hos~ wlth a multl-layered sheet ba~, whereln th~ innerlayer Is ~VC and the outer lay~r Is PEVA~

--~.7; .5 ~EP~TEDIN_F~X
P. 1 1 911102 RV4 8 i i~ LUDR 3.0-045 The con~tructlon of a hoss in accordance with the present Invenlion is suitably carrl~d out by msans of an Qxtruslon proces~ wh0reln said process provlde~ no probl~ms with respect to the formation of ths protrusions of d~craaslng width, since approprlats jet orifices can be readlly set th~r4for.
The Inn~r an~ outar ~urtaces of the hose can be providad ~th one or a plurality of blndlng layers, the hose and tha binding material layer or layers can even be co-extruded In a slngle working step. It Is thus part!cularly posslble to provide two or more layer~ of dlfferent polymers on th~s~ surfac~ of the hos~, as 15 known ~or 10 example, in EP~ 136 848 or i_P-A2-23~ 1B3.

Ths hose ot tha pressnt InvQntion th~r~fore has conslderable advantages. By the use of a blnding materlal layer or a plurallty of blnding materlal layars, one may combine the hose wlth the bag materlal wlthout problems, ~or example, by welding.
15 On tha other hand, the lumen ot the hosa can be made out o~ a material whlch Is particularly advantagaous with r0spect to medlcal and/or chemlcal uses. In a slmllar mannar, th~ blnding materlal whlch Is layer coated upon the Inner wall face ot the hose can bo utllized to connect the hose with further elements, such as a connector or th~ llk~.
The hose of the pr~sent Invantion Is suitable, in a preterred mode, ~or use withmedicai bags whlch are made tront two mutually connectad sheets, slnce the hose,as previously m~ntioned, can be sealed with difflculty into the edge seam o~ the sheet bag. It Is tharein particularly advantageous that there are no sharp edge3 or bends 25 In tha she~ mat~rlal whlch can negatlvely influence tha naxibility of th3 bag.

The invenUon l~ equally directed to a medical bag arrangement in which the bag l~ lorm~d ~rom po~ymeric sha~s wh~rein at 10ast one polymeric connector piece 6 E3EPRTEDIN_Ff~X
P . 12 g11102 RV4 9 LUDR 3.0-045 i~ provided whlch i9 welded Into the bag eam at one end thereof and at the otherend thereot 18 sul~ably provlded ~th a connecUng e!ærnent. In this bag arrangement, it Is partlcularly advantagcous to utllizc the hosfl o~ the pre~ant Invantion as a connector plece. It ia thus ~osslble to comblne one end of the hos~ piac0 wlth the 5 ~heets of ~he bag, whereas as thc other end of the hose pl~ce i~ attachcd to a connector.

In accordance wlth the Inwntlon ther3 are, as mentioned her~inabove, a plurality of v0ry dlff0rent connaction arrangam~nt possibill~ies, tor example, heat 10 wsldlng, hlgh ~r~quency weldlng, or glulng. The length of the hos~ can b~ gr~atcr than 10 cm. It 18 advantaseous to pro~de it however wl~h a length o~ b~tween 25 to 50 cm.

eRlEF DESCi~lPTlON OF THE DRAWINGS
15Tho InvenUon Is described herelnbslow a~ exemplffl6d In examples and In the drawlngs.

Thereln 18 8hOWn:

20Flgure 1 Is a perspectlve vlew of a flrst embodlment ot th~ hose In accordancewlth the invention, In comblnation with a sagment of schematlcally illustrated bag.
Fi~urs 2 Is a tront slevaUonal psrsp~ctive cross~section vlew oS the ho~e whlch 13 laid In to th~ sdge s~am of a shsst bag.
Fl~ura 3 Is a perspectlve view of another ern~odlment of the hose In 25 accordance with th~ pr~son~ Invention.
Fl~ure 41~ a cro~s-sectlonal view of a hose coextrudad with bindlng material.
Flgure 5 is a cross~Q~ctlonal perspective ~ew of a r~nodiflcation of Figure 3, wherein th~ protrusions are at an angl~ ~o ~ach other.

'--~;7 ~EPf:~TEDIl`l_F hX
P. 13 g1t102 ~V4 10 , ~ J ~j 1.3 LUDR 3.0-045 Flgure 1315 a cro~s~Rectlonal par-~p~Uv~ view ot a moditcation of Flgure 3, whereln the bottom sur1aces ot tha protruslon3 ar~ coplanar.
Figure 7 Is a plan view o~ a ba~ o1 this Invention with a hoQe and connector plug.
The ho~a 1 in accordance with thc present inventlon shown in i Igures 1 throu~h 4 comprlses an Inner segment 3 having subs~antially clrcular Inner cro~s-sectlon 2, as Is conventlonal with hose~. Th~ hose Inner segment 3 ~urthermore, Is Sormed as a substantlally cyllndrlcal shell Qhaped wall which Is provided, not only 10 around the clrcumference but ov~r the entlre leng~h of the hose, in substanUally ths samc cross q~ction.

In accordance wlth the Inventlon, protruslons 4 are formed on aach of the opposlte side~ o1 the hose, whlch, as partlcularly Illu~trated In ~Igure 2, ar3 wcdge-15 shaped and which thln out toward~ their distal ends. The outer edge seQmr~nts ofprotruslons 4 which covar the entire length o~ hose 1, can ba provided in the form of sheet-lika ~dga s~rip 58 which, as illustratcd In Flgure 3, may have a substantlal width. Flgurs 2 shows an embodiment whereln the hose 1 of the present Invention is inserted Into the adge seam of a partlàlly Illustrated sheeting bag 6. The sheet bag 20 6 comprlses an upper sheet 7 and a lowar sheat 8 whlch ar~ connected to each other in the viclnlty of tha edg~, for exampla by means of a weldlng procedur~. Any commerclally avallable sheetln0 ba~3s may be utilized which, In accordance wlth the presant art, may be provided In a plurallty ot dlfferant modlflcatlons.

The hose 1 produccd in accordanca with thls invention, mak~-~ it posslble to plac~ an Insertion in the sealed border ar~a b3tween the upper and th3 lower shects 7 and 8 wlthout axcess bendlng or the like of the sheets 7 and ~. ln one r~mbodlm~nt, protrus~on 4 commencss in a substantially tangenUal direction to the ~j91;9 3EP~TEDIN_FPX
P . 14 ~11tO2 RY4 11 ~ LUDR 3.0~045 cyllndrlcal clrcumference of Inn~r segmant 3 and ext3nds it~elf In a w~dge form or In a concaY~ manner to ~he ed~e strip ~. Slnce sald sdge s~rip 5 has a v~r~ 8mall thlckness, problem~ relatlng to welding betw~an the uppar and lower sh~ets 7 and8 do not arls~.
Figurc 4 show-Q, In cross--~cctiona~ vlew, a fur~h~r ~mbodlment of the hose in accordance with Figura 1. Thls Is provid~d with a cyllndrlcally shcll lorm0d wall 3 trom whlch, on oppo~ite s~das thereof, the protrusions 4 exterld aY Is descrlbed Jn combinaUon wlth Fi~ures 1 through 3. On the upp0r surface o~ the hose, there 18 10 provld~d a co0xtruded blndin~ lay~r 9. Whllc In lumsn 2 of the hos~ 1, there l-~provlded a coex~ruded blnding lay~r 10. Thls thu8 ~nables the hose to ba bound to the 3heet~ of a bag as i~ shown in Figuros 1 to 3 and also to be comblned wlth a connector. Alternative to the connector, a Y-plece or slmllar transltlon adaptor may be provlded.
In Figures 5 and 6, where the first dlglts are 1 and 2 respectlvely, embodimont~ slmilar to that of Figure 3 are ~hown, wher~ln the protruslons 14 are at an an~le to each other and where the bottom surfaces of protrusion 24 ara coplanar and an arc of inner 8egmant 23 protrudes.
A full bag 6 havlng a hose 1 wlth a connector 7 Is Illustrated In Flgurs 7.

-~'E~ 13 '91 17:20 ~3EPRTEDIN_F~X
P,15 911'iO2 FIV4 12 '" ~ LUDFI 3.0445 Th~ Invention Is not llmlt~d ~o th0 illu3trat~d embodlmentQ but rather one ~kllled In the art would be providcd with many embodlm~nts anci modlficaUons within the -~cope of the invention. Thu-Q, it Is ~or 0xampl~, posslbl~ to provida that hose 1 5 Is multl-lumlna. Furthermore, protrusions 4 can be providcd in different dlr~ctlons to each other; It i~ also posslble to provide more than two protrusions to the hose, for axampl6, In srd~r to combln~ this with a conta~n~r havlng thre~ sheetlng elements.

Claims (12)

1. A composite hose comprising an inner segment of predetermined thickness, said segment having an outer surface and an inner surface having over the length of said composite hose, an inner cross-section of substantially constant dimensions and at least two substantially wedge-shaped protrusions each having an upper and a lower surface and having their thinner portions at the distal ends thereof and their proximal ends shaped to mate with the outer circumferential contour of said inner segment, said protrusion being mated with said outer surface of said inner segment and each extending the entire length of said outer surface.

2. A composite hose of claim 1 additionally comprising thin sheet-shaped edge strips integrated with at least one surface of each of said protrusions andextending beyond the free distal edge thereof.

3. A composite hose of claim 1 wherein the outer contour of the said inner segment is cylindrical and the upper and lower surfaces of said protrusions proximate to said outer surface of said inner segment, are substantially tangential thereto.

4. A composite hose of claim 1 wherein the overall cross-section thereof has the shape of a substantially biconvex lens.

5. A composite hose of claim 1 wherein the hose has a substantially elliptical overall cross-section.

911102 RV4 LUDR 3.0-045

6. A composite hose of claim 1 wherein the outer surface presented by said composite hose comprises a material weldable with a bag formed of at least two sheets of polymeric material.

7. A composite hose of claim 2 wherein the outer surface presented by said composite hose comprises a material weldable with a bag formed of at least two sheets of polymeric material.

8. A composite hose of claim 1 wherein the inner surface of the inner segment comprises a material weldable with a polymeric connecting means.

9. A composite hose of claim 1 wherein there is provided a binding material layer, to least one of the said inner and outer surfaces of said inner segment.

10. A composite hose element of claim 1 further comprising at least two sheets of mutually weldable polymeric material said composite hose element being placed between at least two sheets of said mutually weldable polymeric material proximate to one mutually vicinal edge of said sheets wherein all of said components are welded togther to form a bag arrangement for the storing and administration of physiologically compatible fluids, having the proximal and of said hose element opening into said bag and the distal end opening to theexterior of said bag.

11. A method of using a composite hose element of claim 1 for making a bag arrangement for the storing and administration of physiologically compatiblefluids comprising the steps of placing a composite hose element of claim 1 911102 RV4 LUDR 3.0-045 between at least two sheets of mutually weldable polymeric material proximate to one vicinal edge of said sheets and welding said sheets and said hose element together to form a bag wherein said hose element is welded into the seam formed by the weld of said bag, having the proximal end thereof opening into said bag and the distal end opening to the exterior of said bag.

12. A bag arrangement for the storing and administration of physiologically compatible fluids comprising a bag member formed from at least two sheets of mutually welded polymeric material, at least one polymeric attachment portion comprising at least a composite hose element of claim 1, welded into the seam formed by the weld of said bag, having the proximal end thereof opening into said bag and the distal end opening to the exterior of said bag and a connecting element attached to the distal end of said hose element.
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