|Número de publicación||US3724747 A|
|Tipo de publicación||Concesión|
|Fecha de publicación||3 Abr 1973|
|Fecha de presentación||10 Mar 1972|
|Fecha de prioridad||15 Mar 1971|
|También publicado como||US3858796|
|Número de publicación||US 3724747 A, US 3724747A, US-A-3724747, US3724747 A, US3724747A|
|Inventores||S Schwartz, H Unger, E Westberg|
|Cesionario original||Aga Ab|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citas de patentes (4), Citada por (96), Clasificaciones (9)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
United States Patent 1 Unger et al.
11] 3,724,747 51 Apr. 3, 1973 l 541 CENTRIFUGE APPARATUS WITI-I MEANS FOR MOVING MATERIAL Inventors: Hans Peter Olof Unger, Lidingo; Eric J. H. Westberg, Stockholm; Stephan L. Schwartz, Lidingo, all of Sweden Assignee: AGA Aktiebolag, Lidingo, Sweden Filed: Mar. 10, 1912 Appl. No.: 233,538
 Foreign Application Priority Data Mar. 15, 1971 Sweden ..3309/71 Mar. 15, 1971 Sweden ..3310/71 us. C1. .233/3, 233/14 R, 233/19 R, 233/26 Int. Cl. ..B04b 1/00 Field of Search ..233/3, 20 R, 20 A, 27, 28, 233/19 R, 19 A, 26, 46, 47 R, 14 R  References Cited UNITED STATES PATENTS 3,559,880 2/1971 Naito ..233/26 2,718,353 9/1955 Kelsey ..233/3 2,661,150 12/1953 Abbott ..233/14 R 2,136,540 11/1938 Brock ..233/3 Primary Examiner-James R. Boler Assistant Examiner-George H. Krizmanich Attorney-Roberts B. Larson et al.
 ABSTRACT A centrifuge for batch treatment of a liquid, particularly blood, such as for separating blood into fractions of different densities and/or for washing blood cells suspended in a liquid, comprises closed collapsible containers in the centrifuge rotor. Resilient tubing interconnects the containers and a peristaltic pump member mounted on and rotating with the centrifuge rotor acts on the resilient tubing to selectively move liquid therethrough from one container to another and prevent liquid flow through the resilient tubing.
5 Claims, 4 Drawing Figures PATENTEI] APR 3 I975 SHEET 2 [1F 2 CENTRIFUGE APPARATUS WITH MEANS FOR MOVING MATERIAL This invention relates to centrifugal treatment of liquid and more particularly to equipment for centrifugally treating discrete quantities of a liquid by separating it into fractions of different densities and, where desired, by washing solid particles suspended in liquid. The invention has particular application to the centrifugal treatment of blood and the present disclosure will be devoted primarily to this application. It should be understood, however, that the invention is applicable to the treatment of other liquids than blood. It should also be noted that the term liquid as used in this specification embraces not only true liquids but also other materials resembling liquids such as the semi-liquid mass of blood cells obtained from whole blood after separation of the plasma.
It is known to treat discrete quantities of blood in a closed system of collapsible containers in a centrifuge rotor. Thus, one container may initially hold 'a batch consisting of either a mixture of whole blood and a liquid preservative or a suspension of red blood cells in a liquid preservative and a second container may initially hold a quantity of a wash solution while a third container is initially empty. The containers are interconnected through conduits and during the treatment plasma and/or preservative from the first container is passed into the empty third container and temporarily replaced by wash solution from the second container. After agitation of the contents of the first container the used wash solution and the material washed off from the blood cells is passed into the third container leaving the washed red cells in the first container.
The use of collapsible closed containers for the blood, for separated fractions and for wash solution enables the treatment to be carried out under sterile conditions since the containers can be interconnected in a closed system to communicate with each other without their contents coming into contact with the ambient atmosphere or exterior surfaces. The transfer of liquid between the containers has presented problems, however, since the transfer normally has to take place while the centrifuge rotor and the container system rotate at high speed.
A .general object of the present invention is to provide improved means for effecting and controlling the transfer of liquid between the containers.
A more specific object in accordance with the foregoing general object is to provide a centrifuge in which the rotor supports a pump for displacing liquid between the containers.
7 Another object is to provide a centrifuge which can be loaded with the containers and made ready for operation with a minimum of manual labor.
In one embodiment of the invention these and other objects are realized in a centrifuge having a rotor, an assembly of collapsible closed containers disposed in and rotating with the rotor, a collapsible conduit which provides a path for the flow of liquid between the containers, and a peristaltic pump member which is mounted on he rotor and adapted to rotate with the rotor and the container assembly. The peristaltic pump member continuously acts on the collapsible conduit and when liquid is to be transferred from one container to another, the peristaltic pump member is caused to rotate slowly with respect to the rotor and the container assembly to displace liquid through the conduit. When the peristaltic pump member is stationary with respect to the rotor and the container assembly, it compresses the conduit to block flow therethrough.
THe above and other objects and features of the invention will. become apparent from the following detailed description taken in conjunction with the accompanying diagrammatic drawings.
FIG. 1 is a view in vertical section of the rotor and associated parts of a centrifuge constructed in accordance with the invention;
FIG. 2 is an enlarged view corresponding to the central portion of FIG. 1;
FIG. 3 is an exploded partly cut away perspective view of the container assembly in the centrifuge shown in FIGS. 1 and 2;
FIG. 4 is a plan view of the central portion of the two-compartment container shown in the lower portion of FIG. 3.
The centrifuge diagrammatically illustrated in FIG. 1 has a frame 10 supporting a centrifuge rotor 11 for rotation about a vertical axis at high speed, e.g., 3000 rpm, by means of a motor 12. Rotor 11 includes a bowl 13 having a depending hollow journal member 14 mounted in a ball bearing 15 in frame 10. The rotor bowl and most other elements of the rotor are circular in plan view.
Rotor bowl 13 houses a container assembly the details of which are best seen in FIG. 3. It includes a lower two-compartment container 16 supported on the bottom wall of bowl l3 and an upper single-compartment container 17 supported on top of container 16. Both containers are generally disk shaped and concentric with the rotor bowl. They are both closed, disregarding openings for the introduction and removal of liquid, and made of a thin and flexible sheet material so as to be collapsible. The sheet material may be, for example, a laminate of polyethylene and polyester having a total thickness of about 0.1 millimeter.
Lower container 16 is made of three circular sheets 18,19,20 disposed one on the other and sealingly joined along their peripheries by a continuous heat seal 21 and at their central portion by another circular heat seal 22. Lower and central sheets 18,19 define between them a compartment 23 which initially holds wash solution and central and upper sheets 19,20 define between them a compartment 24 which is initially empty.
In the central portion of container 16, heat seals 25 (marked by closely spaced dash lines in FIG. 4) joining sheets 18,19 define a collapsible conduit 26'through which wash solution in compartment 23 can flow to a short connecting tube 27 secured to upper sheet 20 around an opening 28 in the latter via an opening 31 in sheet 19 (see also FIG. 2). Similar heat seals 29 (marked by closely spaced full lines in FIG. 2) joining sheets 19,20 define another collapsible conduit 30 through which liquid can flow from connecting tube 27 to compartment 24. Portions of conduits 26,30 extend along two concentric circles and cooperate with a pump 32 described in more detail hereinafter. This pump is operable to-produce the liquid flow and to block the conduits when flow is not desired. Heat seal 22 prevents liquid in the two compartments'from entering the central container portion except through the conduits.
Upper container 17 initially holds a quantity of blood cells suspended in a liquid preservative. It consists of two sheets 33, 34 which are joined by a heat seal 35 at their peripheries and a heat seal 36 at their central portions so that they define between them an annular compartment. A connecting tube 37 communicates with this compartment through a conduit 38 defined by heat seals. An opening 39 in the central portion permits tube 37 to be connected with tube 27 of container 16.
Conduits 26 and 30 as well as conduit 38, owing to the characteristics of the material and the manner in which they have been produced, have a strong natural tendency to close themselves. Thus, in order that they may permit the liquid in the containers to pass through them, the liquid must be subjected to a substantial pressure. Therefore, no special precautions are necessary to prevent unwanted flow through the conduits during manual handling of the containers.
Referring again to FIG. 1, a filler ring 40 and a backing plate 41 are disposed between containers 16 and 17. Connecting tube 27 extends through an opening in the backing plate and is connected to the connecting tube 37.
Rotor 1 1 includes a cover assembly with a rigid cover plate 42 which has an internally screw-threaded boss 43 and holds an annular body 44 made of soft rubber mixed with lead granules so as to have higher specific gravity than the liquids in the containers. A clamping mechanism having an externally screw-threaded sleeve 45 screwed into boss 43 and a number of circumferentially distributed wedges 46 connected to the sleeve through rod 47 cooperates with cover plate 42 and bowl 13 to hold down the cover assembly against the containers. A photoelectric detector 48 mounted in 'sleeve 45 signals the presence of red blood cells in connecting tube 37.
Pump 32 referred to above is of the well-known peristaltic type which has a plurality of rollers moved in a circular path to progressively collapse a resilient conduit so as to displace liquid in the conduit. It has two concentric and independently movable circular groups of rollers, each comprising three rollers spaced apart 120. The outer group of rollers 49 are rotatably mounted on an outer rotor member 50 secured to a hollow shaft 51 which is concentric with rotor 11. These rollers cooperate with conduit 26. The inner group of rollers 52 are rotatably mounted on an inner rotor member 53 secured to a shaft 54 extending coaxially through shaft 51.These rollers cooperate with conduit 30.
As best seen in FIG. 2, rollers 49 and 52 engage conduits 26 and 30 through a flexible diaphragm 55 to lo cally compress and close these conduits against backing plate 41.
Rotor members 50 and 53 normally are stationary with respect to the rotating centrifuge rotor and the containers but when desired they can be slowly rotated with respect to the centrifuge rotor during rotation of the latter. Positive rotational movement of rotor member 50 is derived from journal member 14 of rotor bowl 13 by means of a gear 56 engaging a gear on the journal member and another gear 57 engaging a gear on hollow shaft 51. Gears 56 and 57 are mounted for rotation about a common axis but normally there is no driving connection between them. However, a magnetic clutch 58 can be actuated to cause these gears to rotate in unison so as to bring about slow rotation of rotor member with respect to container 16 (clockwise as seen from above in FIGS. 1, 2 and in FIG. 4). Similarly, positive rotational movement of rotor member 53 (anti-clockwise) is derived from journal member 14 through gears 59,60 and a clutch 61.
The procedure for the treatment of the blood cells in container 17 will now be described. Rotor 11 is assumed to be stationary but assembled as shown in FIG. 1, although compartment 24 of container 16 is empty so that sheets 19 and 20 engage each other face to face under the influence of pressure from rubber body 44. Thus, the peripheral portions of the containers are clamped between the bottom of bowl l3 and filler ring 40 and between the latter and rubber body 44. The central portions of the containers are clamped between the rollers of pump 32 and the lower end of boss 43 of cover plate 42. The rubber body in conjunction with the shape of the parts ensure that unwanted air pockets adjacent the containers are virtually eliminated.
Rotor 11 is then caused to rotate with clutches 58,61 disengaged so that pump rotor members 50,53 rotate in unison with the centrifuge rotor owing to the friction between these rotor members and diaphragm and other parts of the centrifuge rotor. Under the influence of the centrifugal forces, the heavy soft rubber of body 44 is forced outwardly to apply an external pressure to containers 16,17. Owing to the arrangement and shape of the parts, this pressure forces the liquid in the containers inwardly and-causes conduits 26,30 to assume the expanded form shown in FIG. 2. However, since the rollers of the rotor members are stationary with respect to the rotor and the containers and compress the conduits, no liquid is permitted to pass through the latter.
The centrifugal field, which may be of the order of 1,000 g, causes the formation of fractions of different densities in container 17, that is, the red blood cells accumulate in the radially outer portion of container 17 while the lighter preservative liquid is collected in the radially inner portion. Clutch 61 is then engaged to cause inner rotor member 53 to rotate anticlockwise (FIG. 4) with respect to the centrifuge rotor and the containers so that the preservative liquid is pumped from container 17 into compartment 24 of container 16 through conduit 38, connecting tubes 37,27 and conduit 30. Since outer rotor member 50 is still stationary with respect to the centrifuge rotor and the containers, the preservative liquid is prevented from flowing through conduit 26.
When detector 48 signals the presence of red blood cells in tube 37, clutch 61 is again disengaged and clutch 58 engaged so that outer rotor member 50 is caused to rotate to pump wash solution from compartment 23 into container 17 through conduit 26. tubes 27,37 and conduit 38 while inner rotor member 53 is held stationary to prevent flow through conduit 30. When a sufficient amount of wash solution has been transferred, clutch 58 is disengaged so that both conduits 26,30 are closed whereupon rotor 11 is rapidly braked (by means not shown) to low speed to agitate the contents of container 17 and thoroughly mix the wash solution and blood cells.
THe wash solution is then separated from the blood cells and transferred to compartment 24 of container 16 in the same manner as has been described for the preservative liquid. The washing step described above the described integral conduits offer significant advantages from a manufacturing as well as from a handling point of view.
What is claimed is:
1. A centrifuge for separating liquid into fractions of differentdensities, comprising a centrifuge rotor, a plurality of collapsible closed containers disposed in the centrifuge rotor for rotation therewith, a first one of the containers being adapted to initially hold a discrete quantity of liquid to be treated in the rotor and a second one being adapted to receive a fraction of lesser density from said first container, collapsible conduit means defining a flow path for conveying liquid betweensaid first and'second containers, and peristaltic pump means mounted on the centrifuge rotor for rotation therewith and acting on the conduit means to selectively move liquid through the conduit means and prevent liquid flow through the conduit means. I
2. A centrifuge as set forth in claim .1 in which the peristaltic pump means includes pump rotor means mounted for rotation with respect to the centrifuge rotor about the axis of rotation of the latter and selectively operable means for causing rotation of the pump rotor means with respect to the centrifuge rotor.
3. A centrifuge as set forth in claim 2 in which the pump rotor means comprises two concentric rotors which are independently rotatable with respect to the centrifuge rotor, one of said rotors acting on a first collapsible conduit for transferring liquid to the first container and the other acting on a second collapsible conduit for transferring liquid from the first container.
4. A centrifuge as set forth in claim 1 in which the containers are generally circular and disk shaped containers which are disposed one on the other and concentric with the axis of rotation of the centrifuge rotor and in which a resilient member is disposed in the centrifuge rotor to apply during rotation of the latter an external pressure to the containers which is proportional to the speed of rotation of the centrifuge rotor.
5. A centrifuge as set forth in claim 4 in which the resilient member is made of a soft material adapted to have a specific gravity higher than that of the liquid to be treated.
|Patente citada||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US2136540 *||23 Ago 1935||15 Nov 1938||Clarence A Brock||Separating machine|
|US2661150 *||17 Dic 1947||1 Dic 1953||Abbott Jr William G||Centrifuge|
|US2718353 *||9 Jun 1952||20 Sep 1955||Kelsey William H||Continuous centrifuge|
|US3559880 *||3 Feb 1969||2 Feb 1971||Green Cross Corp||Apparatus for blood plasma separation|
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US3987961 *||23 Ene 1975||26 Oct 1976||Heraeus-Christ Gmbh||Centrifuge bag for treatment of biological liquids|
|US4007871 *||13 Nov 1975||15 Feb 1977||International Business Machines Corporation||Centrifuge fluid container|
|US4010894 *||21 Nov 1975||8 Mar 1977||International Business Machines Corporation||Centrifuge fluid container|
|US4278202 *||25 Jul 1979||14 Jul 1981||Separek Teknik Ab||Centrifuge rotor and collapsible separation container for use therewith|
|US4447220 *||22 Sep 1980||8 May 1984||Eberle Guenter||Method and apparatus for separating blood components|
|US4767397 *||9 Mar 1987||30 Ago 1988||Damon Corporation||Apparatus for liquid separation|
|US4806252 *||30 Ene 1987||21 Feb 1989||Baxter International Inc.||Plasma collection set and method|
|US4850952 *||13 Ene 1986||25 Jul 1989||Figdor Carl G||Method and device for the separation and isolation of blood or bone marrow components|
|US4934995 *||12 Ago 1977||19 Jun 1990||Baxter International Inc.||Blood component centrifuge having collapsible inner liner|
|US4940543 *||30 Nov 1988||10 Jul 1990||Baxter International Inc.||Plasma collection set|
|US5006103 *||11 Ene 1990||9 Abr 1991||Baxter International Inc.||Disposable container for a centrifuge|
|US5160310 *||29 Jul 1991||3 Nov 1992||Centritech Ab||Centrifugal separator|
|US5217426 *||14 Ago 1991||8 Jun 1993||Baxter International Inc.||Combination disposable plastic blood receiving container and blood component centrifuge|
|US5217427 *||4 Oct 1991||8 Jun 1993||Baxter International Inc.||Centrifuge assembly|
|US5571068 *||20 Jul 1994||5 Nov 1996||Baxter International Inc.||Centrifuge assembly|
|US5723050 *||28 Jun 1994||3 Mar 1998||Omega Medicinteknik Ab||Bag set for use in centrifugal separation|
|US5759147 *||7 Jun 1995||2 Jun 1998||Baxter International Inc.||Blood separation chamber|
|US6066497 *||2 Ago 1995||23 May 2000||Powell Biological Machines Limited||Cell culture apparatus|
|US6261217 *||14 Abr 1998||17 Jul 2001||Sanguistech Aktiebolag||Separation set having plate-like separation container with annular pinch valve for blood component preparation|
|US6579219||9 Abr 2001||17 Jun 2003||Medtronic, Inc.||Centrifuge bag and methods of use|
|US6656105||30 Nov 2001||2 Dic 2003||Gambro, Inc.||Centrifuge for processing blood and blood components in ring-type blood processing bags|
|US6689042||22 Ene 2002||10 Feb 2004||Gambro, Inc.||Centrifuge and container system for treatment of blood and blood components|
|US6740239||30 Nov 2001||25 May 2004||Gambro, Inc.||Method and apparatus for processing blood and blood components|
|US6793828 *||8 May 2003||21 Sep 2004||Medtronic, Inc.||Method of separating and collecting components from a fluid|
|US6827863||16 Jun 2003||7 Dic 2004||Medtronic, Inc.||Flexible centrifuge bag and methods of use|
|US6835171||16 Ene 2004||28 Dic 2004||Gambro Inc||Centrifuge and container system for treatment of blood and blood components|
|US7033512||14 Abr 2003||25 Abr 2006||Gambro, Inc||Fluid separation devices, systems and/or methods using a centrifuge and roller pump|
|US7097774||24 Jul 2003||29 Ago 2006||Gambro Inc||Method for processing a blood product with a bag set having a multi-way connector|
|US7166217||25 Ago 2003||23 Ene 2007||Gambro Inc||Methods and apparatuses for blood component separation|
|US7235041||1 Ago 2006||26 Jun 2007||Gambro Bct, Inc.||Centrifuge for processing a blood product with a bag set having a processing bag|
|US7279107||16 Abr 2003||9 Oct 2007||Gambro, Inc.||Blood component processing system, apparatus, and method|
|US7306555 *||8 Sep 2006||11 Dic 2007||Medtronic, Inc.||Centrifuge system utilizing disposable components and automated processing of blood to collect platelet rich plasma|
|US7306741||3 Dic 2004||11 Dic 2007||Medtronic, Inc.||Flexible centrifuge bag and methods of use|
|US7347932||20 Feb 2004||25 Mar 2008||Gambro Bct, Inc.||Apparatus and method for separating a volume of composite liquid into at least two components|
|US7347948||3 Dic 2004||25 Mar 2008||Ateriocyte Medical Systems, Inc.||Blood centrifuge having clamshell blood reservoir holder with index line|
|US7396451||15 Dic 2006||8 Jul 2008||Gambo Bci, Inc.||Methods and apparatus for blood component separation|
|US7413665||15 Dic 2006||19 Ago 2008||Gambro Bct, Inc.||Methods and apparatus for blood component separation|
|US7497944||27 Mar 2007||3 Mar 2009||Caridianbct, Inc.||Blood component processing system, apparatus, and method|
|US7582049 *||8 Feb 2006||1 Sep 2009||Caridianbct, Inc.||Fluid separation devices, systems and/or methods using a centrifuge and roller pump|
|US7648452||3 Jul 2008||19 Ene 2010||CardianBCT, Inc.||Apparatus for blood component separation|
|US7648639||14 Dic 2007||19 Ene 2010||CaridianBCT, Inc||Method for separating a volume of composite liquid into at least two components|
|US7708889||26 Ene 2009||4 May 2010||Caridianbct, Inc.||Blood component processing system method|
|US7811463 *||24 Mar 2008||12 Oct 2010||Arteriocyte Medical Systems, Inc.||Centrifuge apparatus and methods for on-line harvesting of a predetermined component of a fluid medium|
|US7819793||26 Oct 2010||Caridianbct, Inc.||Apparatus for separating a composite liquid into at least two components|
|US7833185||27 Abr 2007||16 Nov 2010||Caridianbct, Inc.||Apparatus for separating a volume of whole blood into at least three components|
|US7867159||4 Jun 2007||11 Ene 2011||Arteriocyte Medical Systems, Inc.||Centrifuge system utilizing disposable components and automated processing of blood to collect platelet rich plasma|
|US7897054 *||21 May 2009||1 Mar 2011||Arteriocyte Medical Systems, Inc.||Centrifuge container and methods of use|
|US7981019||14 Ago 2006||19 Jul 2011||Caridianbct, Inc.||Apparatus and method for separating a composite liquid into at least two components|
|US8057377||14 Ago 2006||15 Nov 2011||CaridianBCT, Inc||Apparatus and method for separating a composite liquid into at least two components|
|US8120760||30 Jun 2009||21 Feb 2012||Caridianbct, Inc.||Method and apparatus for separating a composite liquid into at least two components and for determining the yield of at least one component|
|US8173027||28 Ago 2007||8 May 2012||Terumo Bct, Inc.||Method of separating a composite liquid into at least two components|
|US8236184||31 Oct 2007||7 Ago 2012||Terumo Bct, Inc.||Method for separating a composite liquid into at least two components|
|US8277406||2 Oct 2012||Terumo Bct, Inc.||Method for separating a volume of whole blood into at least three components|
|US8287742||5 Dic 2007||16 Oct 2012||Terumo Bct, Inc.||Method for separating a composite liquid into at least two components|
|US9028388||6 May 2011||12 May 2015||Terumo Bct, Inc.||Multi-unit blood processor with volume prediction|
|US9079194||18 Jul 2011||14 Jul 2015||Terumo Bct, Inc.||Centrifuge for processing blood and blood components|
|US9248446||13 Feb 2014||2 Feb 2016||Terumo Bct, Inc.||System for blood separation with a separation chamber having an internal gravity valve|
|US20030173274 *||3 Feb 2003||18 Sep 2003||Frank Corbin||Blood component separation device, system, and method including filtration|
|US20030195104 *||14 Abr 2003||16 Oct 2003||Gambro, Inc.||Fluid separation devices, systems and/or methods using a centrifuge and roller pump|
|US20030211928 *||8 May 2003||13 Nov 2003||Dolecek Victor D.||Method of separating and collecting components from a fluid|
|US20040058794 *||16 Jun 2003||25 Mar 2004||Dolecek Victor D.||Flexible centrifuge bag and methods of use|
|US20040104182 *||25 Ago 2003||3 Jun 2004||Gambro, Inc.||Methods and apparatuses for blood component separation|
|US20040147387 *||16 Ene 2004||29 Jul 2004||Gambro, Inc.||Centrifuge and container system for treatment of blood and blood components|
|US20050045567 *||20 Feb 2004||3 Mar 2005||Gambro, Inc.||Apparatus and method for separating a volume of composite liquid into at least two components|
|US20050082237 *||3 Dic 2004||21 Abr 2005||Medtronic, Inc.||Blood centrifuge having clamshell blood reservoir holder with index line|
|US20050098507 *||3 Dic 2004||12 May 2005||Medtronic, Inc.||Flexible centrifuge bag and methods of use|
|US20060122048 *||8 Feb 2006||8 Jun 2006||Gambro, Inc.||Fluid separation devices, systems and/or methods using a centrifuge and roller pump|
|US20060270542 *||1 Ago 2006||30 Nov 2006||Gambro, Inc.||Centrifuge for Processing Blood and Blood Components|
|US20070045201 *||8 Sep 2006||1 Mar 2007||Dolecek Victor D||Centrifuge system utilizing disposable components and automated processing of blood to collect platelet rich plasma|
|US20070084806 *||15 Dic 2006||19 Abr 2007||Gambro, Inc.||Methods and Apparatus for Blood Component Separation|
|US20070084807 *||15 Dic 2006||19 Abr 2007||Gambro, Inc.||Methods and Apparatus for Blood Component Separation|
|US20070203444 *||27 Abr 2007||30 Ago 2007||Gambro Bct, Inc.||Apparatus and Method for Separating a Volume of Whole Blood Into At Least Three Components|
|US20070209708 *||8 Jun 2005||13 Sep 2007||Gambro, Inc.||Bag Assembly for the Separation of a Composite Liquid and Method for Manufacturing it|
|US20070284320 *||22 May 2007||13 Dic 2007||Gambro Bct, Inc.||Apparatus and Method for Separating a Composite Liquid Into At Least Two Components|
|US20070293385 *||4 Jun 2007||20 Dic 2007||Dolecek Victor D|
|US20080053203 *||28 Ago 2007||6 Mar 2008||Gambro Bct, Inc.||Apparatus and Method for Separating A Composite Liquid Into At Least Two Components|
|US20080093312 *||14 Dic 2007||24 Abr 2008||Gambro Bct, Inc.||Method for Separating A Volume of Composite Liquid Into At Least Two Components|
|US20080149564 *||5 Dic 2007||26 Jun 2008||Gambro Bct, Inc.||Apparatus and Method for Separating a Composite Liquid Into At Least Two Components|
|US20080171646 *||10 Dic 2007||17 Jul 2008||Arteriocyte Medical Systems, Inc.||Flexible centrifuge bag and methods of use|
|US20080220959 *||14 Ago 2006||11 Sep 2008||Gambro Bct, Inc.||Apparatus and Method for Separating A Composite Liquid Into At Least Two Components|
|US20080283473 *||31 Oct 2007||20 Nov 2008||Gambro Bct, Inc.||Apparatus and Method for Separating a Composite Liquid Into At Least Two Components|
|US20080314822 *||3 Jul 2008||25 Dic 2008||Gambro Bct, Inc.||Apparatus for Blood Component Separation|
|US20090008307 *||24 Mar 2008||8 Ene 2009||Medtronic, Inc||Blood centrifuge having clamshell blood reservoir holder with index line|
|US20090127206 *||26 Ene 2009||21 May 2009||Caridianbct, Inc.||Blood Component Processing System Method|
|US20090294383 *||3 Dic 2009||Arteriocyte Medical Systems||Flexible centrifuge bag and methods of use|
|US20090298665 *||21 May 2009||3 Dic 2009||Arteriocyte Medical Systems||Flexible centrifuge bag and methods of use|
|US20100026986 *||4 Feb 2010||Caridianbct, Inc.||Method and Apparatus for Separating A Composite Liquid Into At Least Two Components And For Determining The Yield Of At Least One Component|
|US20110028295 *||12 Oct 2010||3 Feb 2011||Caridianbct, Inc.||Apparatus for Separating a Composite Liquid Into At Least Two Components|
|US20110077140 *||14 Ago 2006||31 Mar 2011||Gambro Bct, Inc.||Apparatus and Method for Separating A Composite Liquid Into At Least Two Components|
|DE2835307A1 *||11 Ago 1978||22 Feb 1979||Baxter Travenol Lab||Verfahren und vorrichtung zum trennen von blutbestandteilen|
|DE2858828C2 *||11 Ago 1978||2 Dic 1993||Baxter Int||Verfahren und Zentrifuge zur Trennung von Blut|
|DE3041131A1 *||31 Oct 1980||14 May 1981||Asahi Chemical Ind||Verfahren und behaelter zum kontinuierlichen separieren der plaettchenkomponente im blut|
|WO1987001307A1 *||13 Ene 1986||12 Mar 1987||Ver Het Nl Kanker Inst||Method and device for the separation and isolation of blood or bone marrow components|
|WO1988005690A1 *||29 Ene 1988||11 Ago 1988||Baxter Travenol Lab||Plasma collection set and method|
|WO2002081096A1 *||5 Abr 2002||17 Oct 2002||Medtronic Inc||Flexible centrifuge bag and methods of use|
|WO2003086640A1 *||14 Abr 2003||23 Oct 2003||Gambro Inc||Fluid separation using a centrifuge and roller pump|
|Clasificación de EE.UU.||494/1, 494/34, 494/42, 494/45, 494/84|
|Clasificación cooperativa||B04B2005/045, B04B5/0428|