SE417898B - DEVICE FOR THE DIFFUSION OF SUBJECTS BETWEEN TWO FLUIDS THROUGH SEMIPERMEABLE MEMBRANE - Google Patents
DEVICE FOR THE DIFFUSION OF SUBJECTS BETWEEN TWO FLUIDS THROUGH SEMIPERMEABLE MEMBRANEInfo
- Publication number
- SE417898B SE417898B SE7802133A SE7802133A SE417898B SE 417898 B SE417898 B SE 417898B SE 7802133 A SE7802133 A SE 7802133A SE 7802133 A SE7802133 A SE 7802133A SE 417898 B SE417898 B SE 417898B
- Authority
- SE
- Sweden
- Prior art keywords
- holes
- locking means
- stack
- fluids
- membranes
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
-
- 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
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
-
- 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
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1621—Constructional aspects thereof
-
- 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
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Urology & Nephrology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Vascular Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Emergency Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- External Artificial Organs (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
¿?so21ss-4,, lb _' l5_. 720 25f sd 35 Uppfinningen kännetecknas härvid av att hålen är utfor- _made i ett övre utåtbockat parti av sidoväggen på ett sådant sätt att det utâtbockade partiets innermått ovanför hålen 7 är minst lika med yttermåttet av sidoväggen under nålen. ¿? So21ss-4 ,, lb _ 'l5_. The invention is characterized in that the holes are formed in an upper outwardly bent portion of the side wall in such a way that the inner dimension of the outwardly bent portion above the holes 7 is at least equal to the outer dimension of the side wall below the needle.
I första hand är anordningen enligt ugpfinningen avsedd att användas for rening av blod, dvs. såsom en så kallad konstgjord njure. För fackmannen inses det dock klart, att anordningen enligt uppfinningen även kan användas för många? andra ändamål. Ekempelvis kan den användas för syresättning av blod. Det ena av ovannämnda fluider utgöres därvid av j blod, medan det andra utgöres av syre eller en syreblandning.In the first place, the device according to the ugp invention is intended to be used for purification of blood, i.e. such as a so-called artificial kidney. It will be clear to those skilled in the art, however, that the device according to the invention can also be used for many? other purposes. For example, it can be used to oxygenate blood. One of the above-mentioned fluids is then constituted by blood, while the other is constituted by oxygen or an oxygen mixture.
Alternativt kan anordningen enligt uppfinningen snvändasj I för överföring av ämnen från en gas_till en annan. Med "fluidum“ avses sålundasåväl gas som vätska. Enär emellertid lanordningen enligt uppfinningen främst är avsedd för rening d av blod, kommer den i det följande att beskrivas i samband med sådan tillämpning. , . _ ' Uppfinningen beskrives närmare i det följande under hän-T I-visning"till-bifogade ritningar, vilka såsom ekempel visar ett föredraget utföringsexempel av anordningen enligt upp- ¿ finningen. Det visade.utföringsexemplet på föreliggande 'anordning är sålunda användbart i första hand såsom konst-" :gjord njure. ' > Fig. l visar härvid en sådan konstgjord njure seddl ovanifrân. ' ' 7 f^ .*Fig. 2 visar samma njure sedd från sidan och delvis 1 snitt. l _ t ' 1 ' j Fig. 3 och 4 visar ett snitt längs linjerna A-A resp.Alternatively, the device according to the invention may be used to transfer substances from one gas to another. By "fluid" is thus meant both gas and liquid. However, since the device according to the invention is primarily intended for the purification of blood, it will in the following be described in connection with such application. The invention is described in more detail below with reference to In the accompanying drawings, which by way of example show a preferred embodiment of the device according to the invention. The illustrated embodiment of the present device is thus useful primarily as an artificial kidney. Fig. 1 shows such an artificial kidney seen from above. Fig. 2 shows the same kidney seen from the side and partly 1 section Fig. 3 and 4 show a section along the lines AA and
B-B 1 rig. 2. d l ' I ~ ' Fig. 5 visar denna anordning sedd underifrån.B-B 1 rig. 2. d l 'I ~' Fig. 5 shows this device seen from below.
Anordningen enligt fig. l-4 innefattar en toppdel l och -en bottendel 2 och en däremllen inklämd-stanel av semiper- meabla membran 4 ooh distansplattor 3 med membranen anord- - nade parvis mellan plattorna 3. I fig. (2-4) får dessa .memtranpar representeras av skiljelinjen mellan distans- - plattorna 3. Detta för att icke de enskilda figurerna onödigt- vis skall behöva förstoras upp. I det såsom framgår bäst av 10 15 20 25 30 35 7ao21z3-4 fig. 3 och 4 är toppdelen utformad väsentligen såsom en plat- ta medan bottendelen är skålformad. Såväl topp- som botten- delen innefattar ett ramverk av flänsar 5 respektive 6 med bottendelens sidoväggar betecknade 7 i ritningen.The device according to Figs. 1-4 comprises a top part 1 and a bottom part 2 and a clamped stem of semipermeable membrane 4 and spacer plates 3 with the membranes arranged in pairs between the plates 3. In Figs. (2-4) these .memtrans may be represented by the dividing line between the spacer plates 3. This is so that the individual figures do not have to be unnecessarily enlarged. In what is best seen in Figs. 3 and 4, the top portion is formed substantially as a plate while the bottom portion is cup-shaped. Both the top and bottom part comprise a framework of flanges 5 and 6, respectively, with the side walls of the bottom part designated 7 in the drawing.
Topp- och bottendelarna är sammanhâllna medelst hak- formade låsorgan 10 i toppdelen, vilka är anordnade att in- gripa i mitt för låsorgànen 10 belägna hål 9 i bottendelens sidoväggar 7. Hålen 9 är belägna i ett övre utâtbockat parti 8 av sidoväggen 7, varjämte respektive låsorgan 9 och 10 lämpligen är belägna symmetriskt kring ett vertikalplan ge- nom anordningens centrumlängdaxel.The top and bottom parts are held together by means of hook-shaped locking means 10 in the top part, which are arranged to engage in holes 9 located in the middle of the locking member 10 in the side walls 7 of the bottom part. respective locking means 9 and 10 are suitably located symmetrically about a vertical plane through the center longitudinal axis of the device.
Av fig. 4 framgår att det utåtbockade partiets 7 inner-I mått ovanför hålen 9 i bottenväggens sidoväggar 7 är minst lika stora som yttermåttet av sidoväggen 7 under hålen 9.From Fig. 4 it can be seen that the inner dimension of the outwardly bent portion 7 above the holes 9 in the side walls 7 of the bottom wall is at least as large as the outer dimension of the side wall 7 below the holes 9.
Daun geometriska förhållande innebär den tillverkningstek- niska fördelen att bottendelen kan formas genom formsprutning i ett enkelt tvådelat formsprutningsverktyg utan rörliga kärnor.Daun geometric conditions mean the manufacturing technical advantage that the bottom part can be formed by injection molding in a simple two-part injection molding tool without movable cores.
Blodet intages genom inloppsöppningen ll och renings- vätskan genom öppningen l2. Detta kan ske exempelvis på så sätt, som närmare beskrives i ovan nämnda patent. Pâ samma sätt avlägsnas blodet respektive reningsvätskan genom öpp- ningarna 13 respektive 14. Med 15 slutligen betecknas ett hål, som endast är avsett att underlätta monteringen av njuren och som därefter pluggas igen med hjälp av en icke visad plugg och en packning 16.The blood is ingested through the inlet opening l1 and the purifying fluid through the opening l2. This can be done, for example, in the manner described in more detail in the above-mentioned patent. In the same way, the blood and the cleansing fluid are removed through the openings 13 and 14, respectively. Finally, 15 denotes a hole which is only intended to facilitate the assembly of the kidney and which is then plugged again by means of a plug (not shown) and a gasket 16.
När den'visade njuren monteras, är det mycket väsentligt att ett jämnt tryck bygges upp runt hela njurens periferi, över den hela verksamma ytan, respektive runt öppningarna ll, 12, 13 och 14. Annars kan nämligen läckage uppträda antingen ut från njuren eller mellan blodet och renings- vätskan. Praktiska försök har härvid visat att de visade låsorganen 9 och 10 enligt uppfinningen kan bringas ge önskat tryck med önskad fördelning. Denna tryckfördelning förbättras ytterligare genom den avsmalnande formen på njuren. Denna form ger nämligen ett litet avstånd mellan öppningarna ll-14 och närmaste låsorgan jämfört med om formen 7eo2133+4 l skulle vara helt rektangulär.When the shown kidney is mounted, it is very important that an even pressure is built up around the entire periphery of the kidney, over the entire active surface, and around the openings 11, 12, 13 and 14, respectively. Otherwise, leakage can occur either out of the kidney or between the blood and the cleansing fluid. Practical experiments have here shown that the locking means 9 and 10 shown according to the invention can be brought to give the desired pressure with the desired distribution. This pressure distribution is further improved by the tapered shape of the kidney. Namely, this shape gives a small distance between the openings 11-14 and the nearest locking means compared to if the shape 7eo2133 + 4 l would be completely rectangular.
N Uppfinningen är nàturligtvis icke inskränkt enbart till den ovan beskrivna utfötingsformen,»ntan kan varieras inom ramen för efterföljande patentkrav. Exempelvis kan de i anordningen ingående detaljernas form väsentligen varieras utan att ramen.för uppfinningen överskrides.Of course, the invention is not limited only to the embodiment described above, but may be varied within the scope of the appended claims. For example, the shape of the details included in the device can be substantially varied without exceeding the scope of the invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7802133A SE417898B (en) | 1978-02-24 | 1978-02-24 | DEVICE FOR THE DIFFUSION OF SUBJECTS BETWEEN TWO FLUIDS THROUGH SEMIPERMEABLE MEMBRANE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7802133A SE417898B (en) | 1978-02-24 | 1978-02-24 | DEVICE FOR THE DIFFUSION OF SUBJECTS BETWEEN TWO FLUIDS THROUGH SEMIPERMEABLE MEMBRANE |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7802133L SE7802133L (en) | 1978-02-24 |
SE417898B true SE417898B (en) | 1981-04-27 |
Family
ID=20334094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7802133A SE417898B (en) | 1978-02-24 | 1978-02-24 | DEVICE FOR THE DIFFUSION OF SUBJECTS BETWEEN TWO FLUIDS THROUGH SEMIPERMEABLE MEMBRANE |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE417898B (en) |
-
1978
- 1978-02-24 SE SE7802133A patent/SE417898B/en unknown
Also Published As
Publication number | Publication date |
---|---|
SE7802133L (en) | 1978-02-24 |
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