DE10239658A1 - Apparatus for separating donated blood into fractions comprises a hanging system in which blood flows through membrane bag mounted inside outer bag, plasma flowing out of this into storage bottle - Google Patents
Apparatus for separating donated blood into fractions comprises a hanging system in which blood flows through membrane bag mounted inside outer bag, plasma flowing out of this into storage bottleInfo
- Publication number
- DE10239658A1 DE10239658A1 DE10239658A DE10239658A DE10239658A1 DE 10239658 A1 DE10239658 A1 DE 10239658A1 DE 10239658 A DE10239658 A DE 10239658A DE 10239658 A DE10239658 A DE 10239658A DE 10239658 A1 DE10239658 A1 DE 10239658A1
- Authority
- DE
- Germany
- Prior art keywords
- bag
- membrane
- blood
- plasma
- flows
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 49
- 210000004369 blood Anatomy 0.000 title claims abstract description 32
- 239000008280 blood Substances 0.000 title claims abstract description 32
- 230000017531 blood circulation Effects 0.000 title claims abstract 3
- 210000003743 erythrocyte Anatomy 0.000 claims abstract description 3
- 210000002381 plasma Anatomy 0.000 claims description 17
- 239000012503 blood component Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 7
- 210000000265 leukocyte Anatomy 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 239000011149 active material Substances 0.000 claims 1
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000002429 anti-coagulating effect Effects 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000011888 foil Substances 0.000 claims 1
- 210000003714 granulocyte Anatomy 0.000 claims 1
- 230000005484 gravity Effects 0.000 claims 1
- 230000002706 hydrostatic effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 229920005597 polymer membrane Polymers 0.000 claims 1
- 239000000725 suspension Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 210000001772 blood platelet Anatomy 0.000 abstract 1
- 239000000306 component Substances 0.000 description 3
- 239000012510 hollow fiber Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002617 apheresis Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009534 blood test Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- 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
- A61M1/3693—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits using separation based on different densities of components, e.g. centrifuging
-
- 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
- A61M1/02—Blood transfusion apparatus
- A61M1/0209—Multiple bag systems for separating or storing blood components
- A61M1/0218—Multiple bag systems for separating or storing blood components with filters
-
- 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
- A61M1/02—Blood transfusion apparatus
- A61M1/0209—Multiple bag systems for separating or storing blood components
- A61M1/0236—Multiple bag systems for separating or storing blood components with sampling means, e.g. sample bag or sampling port
-
- 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
- A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
- A61M1/3633—Blood component filters, e.g. leukocyte filters
-
- 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
- A61M1/3693—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits using separation based on different densities of components, e.g. centrifuging
- A61M1/3695—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits using separation based on different densities of components, e.g. centrifuging with sedimentation by gravity
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- External Artificial Organs (AREA)
Abstract
Description
Es ist die Aufgabe zu lösen, ein in der Handhabung einfaches, preiswertes und überall ohne weiteren Zentrifugeneinsatz verwendbares System zur Verarbeitung von Vollblutspenden darzustellen, mit dem die Blutspende in ein Blutkomponenten- und ein Plasmakonzentrat getrennt werden kann. It is the task to solve a simple, inexpensive and easy to use anywhere Another centrifuge insert usable system for processing whole blood donations with which the blood donation into a blood component and a plasma concentrate can be separated.
Der Stand der Technik wird heute im wesentlichen vorgegeben durch die bekannte Zellseparatoren- bzw. Apheresetechnik mit der heute in Transfusionszentren Blutspenden entnommen und aufbereitet werden oder dem Spenderblut gewünschte Blutkomponenten entnommen werden und das Restblut dem Spender retransfundiert wird. Der Stand der Technik wird ebenfalls vorgegeben durch die internationale Patentanmeldung PCT/DE00/01258 mit einer Hohlfasermembranvorrichtung zum Auftrennen von Blut in einzelne Komponenten und/oder Gruppen seiner Bestandteile. The state of the art today is essentially determined by the known Cell separator or apheresis technology with which blood is donated in transfusion centers today are removed and processed or blood components desired from the donor blood are withdrawn and the residual blood is retransfused into the donor. The state of the Technology is also determined by the international patent application PCT / DE00 / 01258 with a hollow fiber membrane device for separating blood into individual components and / or groups of its components.
Die in der erwähnten PCT-Anmeldung beschriebene Vorrichtung besteht aus einem Beutel für die Blutspende, der vor der Bluttrennung umgehängt werden muß, einem vorgeschriebenen Leukozytendepletionsfilter, einem Zusatzbeutel zur Aufnahme einer physiologischen NaCl- Lösung zwecks Befeuchtung der Hohlfasermembran vor Gebrauch, einem Bündel von gezogenen Hohlfasern in einem eigenen Gehäuse, einem Beutel zur Aufnahme des Blutkomponentenkonzentrates, einem Beutel zur Aufnahme des Blutplasmas sowie diversen Schläuchen, Verbindern und Klemmen. The device described in the mentioned PCT application consists of a bag for the blood donation, which must be reassigned before the blood is separated, is prescribed Leukocyte depletion filter, an additional bag to hold a physiological NaCl Solution for moistening the hollow fiber membrane before use, a bundle of drawn hollow fibers in a separate housing, a bag to hold the Blood component concentrate, a bag to hold the blood plasma and various Hoses, connectors and clamps.
Die genannte Vorrichtung leistet die gestellte Aufgabe der Bluttrennung ohne weiteren Zentrifugeneinsatz. Die Aufgabe ist jedoch einfacher im Handling, preiswerter und mit geringerem Zeitaufwand bei weniger Vorrichtungsbestandteilen zu lösen. The device mentioned performs the task of blood separation without further ado Centrifuge insert. However, the task is easier to handle, cheaper and with less time to solve with fewer device components.
Erfindungsgemäß wird die gestellte Aufgabe dadurch gelöst, daß die Vollblutspende während des Spendevorganges entweder direkt in den nachfolgenden Membranbeutel weitergeleitet wird oder zwecks Einhaltung einer Ruhephase in einen Blutbeutel läuft. Darüber hinaus wird über ein vor dem ersten Blutbeutel plaziertes Ventil ein separater, kleinerer Auffangbeutel mit ca. 20 ml Blut befüllt um eventuelle Kontaminationen des Blutes zu überprüfen sowie weitere Blutuntersuchungen ermöglichen zu können. Anschließend läuft die Blutspende über einen Leukozytendepletionsfilter entweder in einen Membranbeutel, der wiederum von einem geschlossenen Beutel umgeben ist oder in einen durch eine einzige Flachmembran in einen Zufluß- und einen Abflußbereich getrennten Beutel, so daß das aus der Membran austretende Plasma in einen dritten Beutel abfließen kann. Da die beiden letzten Beutel definierte Füllvolumina der Fraktionen aufweisen, kann die Blutspende durch einfache Ansicht des Füllungspegels beendet werden. According to the invention the object is achieved in that the whole blood donation during of the dispensing process either passed directly into the subsequent membrane bag or runs into a blood bag to maintain a rest period. Beyond that a separate, smaller collection bag with a valve placed in front of the first blood bag approx. 20 ml blood filled to check possible contamination of the blood as well as others To enable blood tests. Then the blood donation runs through one Leukocyte depletion filter either in a membrane bag, which in turn is used by a is enclosed in a closed bag or in one by a single flat membrane in one Inflow and a discharge area separate bags, so that the emerging from the membrane Plasma can flow into a third bag. As the last two bags defined Have fill volumes of the fractions, the blood donation can be viewed simply by Filling level are ended.
Hinsichtlich der Füllung des zweiten Beutels, der dort stattfindenden Trennung der Blutkomponenten und der folgenden Lagerung erweist es sich als vorteilhaft, den Blutbeutel mit dem innenliegenden Membranbeutel auf einer Halterahmenkonstruktion definierter Wölbung so vorgespannt zu befestigen, daß eine maximale Befüllung des Beutels und eine störungsfreie Bluttrennung gewährleistet wird. With regard to the filling of the second bag, the separation of the Blood components and the subsequent storage it turns out to be beneficial to the blood bag with the inner membrane bag defined on a support frame construction Attach the curvature so that the bag is filled to the maximum and one trouble-free blood separation is guaranteed.
Hierbei wird zwischen dem Membranbeutel und dem umgebenden Beutel ein flaches, aus Kunststoff oder einem anderen geeigneten Material bestehendes Gitter als Abstandshalter vorgesehen, so daß das Blutplasma ungehindert abfließen kann. Besonders vorteilhaft ist eine Verbindung dieses Abstandsgitters mit dem Membranbeutel, da so eine gewünschte Vorspannung auf den Membranbeutel im Hinblick auf den gefüllten Zustand ausgeübt werden kann und der Membranbeutel im gefüllten Zustand an die Wandung des umgebenden Beutels gedrückt wird. Damit wird eine weitere Trennung von Plasma und Blutkomponentenkonzentrat nach Beendigung der Blutspende und des Trennungsvorganges vermieden. Das zur Transfusion vorgesehene Blutkomponentenkonzentrat kann nach Lagerung durch einen Anschluß dem Inneren des Membranbeutels entnommen werden, wobei der Membranbeutel mit einer additiven Stabilisatorlösung vorbefüllt wird. Here, a flat is made between the membrane bag and the surrounding bag Plastic or other suitable material existing grid as a spacer provided so that the blood plasma can flow freely. One is particularly advantageous Connection of this spacer grid to the membrane bag, since it is a desired one Bias is applied to the membrane bag with a view to the filled state can and the membrane bag in the filled state on the wall of the surrounding bag is pressed. This will further separate plasma and Blood component concentrate after the end of the blood donation and the separation process avoided. The blood component concentrate intended for transfusion can be added Storage can be removed through a connection from the inside of the membrane bag, whereby the membrane bag is pre-filled with an additive stabilizer solution.
Bei der Trennungssystemvariante durch Integration einer einzigen Flachmembran kann es sich zusätzlich als sinnvoll erweisen, neben dem Abstandshalter ein vorgelagertes Kunststofffasergeflecht zu beiden Seiten der Membran einzusetzen, um den optimalen Schutz der Membran sowie einen verwirbelungsfreien Zu- und Abfluß der Blutspende bzw. des Plasmas zu gewährleisten. With the separation system variant by integrating a single flat membrane, it can prove to be useful, in addition to the spacer an upstream Use synthetic fiber braid on both sides of the membrane for optimal protection the membrane and a swirl-free inflow and outflow of blood donation or Ensure plasma.
Weiterhin erweist es sich als sinnvoll, die Trennung des Plasmas von den verbleibenden Blutkomponenten durch die Membran zu beschleunigen. Hierzu ist als Mittel der Wahl vorgesehen, das Teilsystem, bestehend aus Membran bzw. Membranbeutel, Gitter, umgebenden Beutel und Halterahmen, mit Hilfe einer geeigneten physikalisch-technischen Methode in permanente Schwingungen zu versetzen. Furthermore, it proves useful to separate the plasma from the remaining ones Accelerate blood components through the membrane. This is the means of choice provided, the subsystem consisting of membrane or membrane bag, grid, surrounding bag and holding frame, with the help of a suitable physical-technical Method to set in permanent vibrations.
Eine denkbare und geeignete Methode ist z. B. die niedrigenergetische Ultraschallerregung des Teilsystems durch einen innerhalb des Membranbeutels platzierten oder an dem umgebenden Beutel bzw. dessen Halterahmen angebrachten oder anzubringenden Ultraschallgeber. Zusätzlich kann durch die Wahl des Materials und die Konstruktion des zwischen Membranbereich und umgebenden Beutel liegenden Gitters bzw. des Halterahmens eine Frequenzverstärkung im Teilsystem erzielt werden. A conceivable and suitable method is e.g. B. the low-energy ultrasonic excitation of Subsystem by one placed within the membrane bag or on the surrounding Bag or its holding frame attached or to be attached ultrasound transmitter. In addition, the choice of material and the construction of the between Membrane area and surrounding bag of the grid or the holding frame Frequency gain can be achieved in the subsystem.
Mit Hilfe der erfindungsgemäßen Vorrichtung ist es ebenfalls möglich gemäß Anspruch 2 mehr als zwei Fraktionen aus der Vollblutspende zu gewinnen, in dem mehrere zweite Beutel mit innenliegender Membran zum Einsatz kommen und von oben nach unten zuerst die Fraktion mit den Erythrozyten und dann in weiteren Schritten die Fraktionen mit den Leukozyten und Thrombozyten bis hin zum Blutplasma gewonnen werden. With the aid of the device according to the invention, it is also possible according to claim 2 win more than two fractions from whole blood donation, in several second bags with an internal membrane and first the top down Fraction with the erythrocytes and then in further steps the fractions with the Leukocytes and platelets up to blood plasma can be obtained.
Die Erfindung ist auf der Zeichnung 1 im gefüllten Zustand im seitlichen Durchschnitt
dargestellt. Dabei sind die einzelnen Elemente wie folgt beziffert:
1 Entnahmeschlauch mit Umlenkventil
2 Verbindungsschlauch mit Bruchklemme
3 20 ml-Auffangbeutel
4 1. Beutel zur Aufnahme der Blutspende
5 Verbindungsschlauch mit Auslaßventil
6 Leukozytendepletionsfilter
7 Verbindungsschlauch mit Bruchklemme
8 2. Beutel mit innenliegendem Membranbeutel
9 Membranbeutel mit Auslaßventil
10 Abstandsgitter
11 Halterahmen
12 Verbindungsschlauch mit Bruchklemme
13 3. Beutel für Plasma mit Auslaßventil
14 Trage- und Aufhängefolie
The invention is shown on the drawing 1 in the filled state in the lateral average. The individual elements are numbered as follows: 1 sampling hose with diverter valve
2 connecting hose with break clamp
3 20 ml collecting bags
4 1. Bag for receiving the blood donation
5 Connection hose with outlet valve
6 leukocyte depletion filters
7 Connection hose with break clamp
8 2. Bag with an inner membrane bag
9 membrane bags with outlet valve
10 spacer grids
11 holding frames
12 connecting hose with break clamp
13 3. Bag for plasma with outlet valve
14 Carrying and hanging film
Auf die Darstellung üblicher Kleinteile wurde bewußt verzichtet, da diese dem Fachmann naheliegen. The usual small parts were deliberately omitted, since these are known to the expert close lying.
In der zweiten Zeichnung wird der 2. Beutel im seitlichen Querschnitt gezeigt, wobei in Zeichnung 2a die einfache Ausführung der Filtrationseinheit mit einer einzigen Flachmembran ausgeführt ist, während in der Zeichnung 2b die Ausführung mit integriertem Membranbeutel dargestellt wird. In the second drawing, the second bag is shown in lateral cross-section, with in Drawing 2a the simple design of the filtration unit with a single Flat membrane is executed, while in the drawing 2b the version with integrated Membrane bag is shown.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10239658A DE10239658A1 (en) | 2002-05-06 | 2002-08-26 | Apparatus for separating donated blood into fractions comprises a hanging system in which blood flows through membrane bag mounted inside outer bag, plasma flowing out of this into storage bottle |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10220249 | 2002-05-06 | ||
| DE10226844 | 2002-06-16 | ||
| DE10239658A DE10239658A1 (en) | 2002-05-06 | 2002-08-26 | Apparatus for separating donated blood into fractions comprises a hanging system in which blood flows through membrane bag mounted inside outer bag, plasma flowing out of this into storage bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10239658A1 true DE10239658A1 (en) | 2003-11-20 |
Family
ID=29271586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10239658A Withdrawn DE10239658A1 (en) | 2002-05-06 | 2002-08-26 | Apparatus for separating donated blood into fractions comprises a hanging system in which blood flows through membrane bag mounted inside outer bag, plasma flowing out of this into storage bottle |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10239658A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2255838A1 (en) | 2009-05-26 | 2010-12-01 | Lmb Lab med Blutbank Technologie GmbH | Process and device for separating whole blood |
| WO2011157822A1 (en) | 2010-06-17 | 2011-12-22 | Lmb Lab Med Blutbank Technologie Gmbh | Flow filter for separating blood into plasma and cellular constituents |
| US9782707B2 (en) | 2014-03-24 | 2017-10-10 | Fenwal, Inc. | Biological fluid filters having flexible walls and methods for making such filters |
| US9796166B2 (en) | 2014-03-24 | 2017-10-24 | Fenwal, Inc. | Flexible biological fluid filters |
| US9968738B2 (en) | 2014-03-24 | 2018-05-15 | Fenwal, Inc. | Biological fluid filters with molded frame and methods for making such filters |
| US10159778B2 (en) | 2014-03-24 | 2018-12-25 | Fenwal, Inc. | Biological fluid filters having flexible walls and methods for making such filters |
| US20190015547A1 (en) * | 2016-01-19 | 2019-01-17 | Kuraray Co., Ltd. | Semipermeable membrane and method of manufacturing the same |
| US10376627B2 (en) | 2014-03-24 | 2019-08-13 | Fenwal, Inc. | Flexible biological fluid filters |
-
2002
- 2002-08-26 DE DE10239658A patent/DE10239658A1/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2255838A1 (en) | 2009-05-26 | 2010-12-01 | Lmb Lab med Blutbank Technologie GmbH | Process and device for separating whole blood |
| DE102009022605A1 (en) | 2009-05-26 | 2010-12-02 | Lmb Lab Med Blutbank Technologie Gmbh | Method and device for separating whole blood |
| DE102009022605B4 (en) | 2009-05-26 | 2019-07-25 | Lmb Lab Med Blutbank Technologie Gmbh | Method and device for separating whole blood |
| WO2011157822A1 (en) | 2010-06-17 | 2011-12-22 | Lmb Lab Med Blutbank Technologie Gmbh | Flow filter for separating blood into plasma and cellular constituents |
| DE102010030238A1 (en) | 2010-06-17 | 2011-12-22 | Lmb Lab Med Blutbank Technologie Gmbh | Flow filter for separating blood into plasma and cellular components |
| US9968738B2 (en) | 2014-03-24 | 2018-05-15 | Fenwal, Inc. | Biological fluid filters with molded frame and methods for making such filters |
| US9796166B2 (en) | 2014-03-24 | 2017-10-24 | Fenwal, Inc. | Flexible biological fluid filters |
| US10159778B2 (en) | 2014-03-24 | 2018-12-25 | Fenwal, Inc. | Biological fluid filters having flexible walls and methods for making such filters |
| US10183475B2 (en) | 2014-03-24 | 2019-01-22 | Fenwal, Inc. | Flexible biological fluid filters |
| US10343093B2 (en) | 2014-03-24 | 2019-07-09 | Fenwal, Inc. | Biological fluid filters having flexible walls and methods for making such filters |
| US9782707B2 (en) | 2014-03-24 | 2017-10-10 | Fenwal, Inc. | Biological fluid filters having flexible walls and methods for making such filters |
| US10376627B2 (en) | 2014-03-24 | 2019-08-13 | Fenwal, Inc. | Flexible biological fluid filters |
| US20190015547A1 (en) * | 2016-01-19 | 2019-01-17 | Kuraray Co., Ltd. | Semipermeable membrane and method of manufacturing the same |
| US11058795B2 (en) * | 2016-01-19 | 2021-07-13 | Kuraray Co., Ltd. | Semipermeable membrane and method of manufacturing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8130 | Withdrawal | ||
| 8165 | Publication of following application cancelled |