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| Number | Title | Issue Date |
| 7992725 | Buoy suspension fractionation system A separator that uses centrifugation to fractionate a suspension such as blood comprises a separation container and a buoy. The buoy is carried in the separation container and has a tuned density that is configured to reach an equilibrium position in a suspension. T... | 08/09/2011 |
| 7445125 | Method and apparatus for separating fluid components A floating element for separating components of a physiological fluid comprises two parts that are relatively movable. The two parts define a prescribed volume between them when at their maximum separation, and one of the parts may be moved toward the other to expre... | 11/04/2008 |
| 7223346 | Methods and apparatus for isolating platelets from blood A platelet collection device comprising a centrifugal spin-separator container with a cavity having a longitudinal inner surface. A float in the cavity has a base, a platelet collection surface above the base, an outer surface. The float density is below the density... | 05/29/2007 |
| 7188734 | Holding device, particularly for bodily fluids, comprising a separating device, and a separating device therefor A separating mechanism for inserting in a receptacle chamber of a container receptacle having a longitudinal axis comprises two adjacently disposed components and a sealing device which is directed towards an internal wall of the container receptacle. The components... | 03/13/2007 |
| 7153477 | Device and method for separating components of a fluid sample A device and method is provided for separating heavier and lighter fractions of a fluid sample. The device includes a plurality of constituents comprising a container and a composite element in the container. The composite element is a separator comprising at least ... | 12/26/2006 |
| 7077273 | Blood component separator disk A separator disk (4) for use in centrifugal separation of components is designed to automatically position itself during separation at the interface between the supernatant and the remaining components. Preferably the interface is between plasma and red blood... | 07/18/2006 |
| 6955920 | Test cartridge for evaluating blood platelet functionality Apparatus and method for evaluating platelet functionality of a blood sample. A cartridge includes a plurality of test cells. Each cell receives an aliquot part of a blood sample. A measured amount of clotting reagent is provided in each cell. A measured amount of p... | 10/18/2005 |
| 6939466 | Graded particle-size retention filter medium for fluid filtration unit with improved edge seal A fluid filtration unit having two or more filter medium layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter medium are presently preferably pos... | 09/06/2005 |
| 6803022 | Device and method for separating components of a fluid sample A device and method for separating heavier and lighter fractions of a fluid sample. The device includes a plurality of constituents comprising a container and a composite element in the container. The composite element is a separator comprising a deformable bellows,... | 10/12/2004 |
| 6793892 | Device and method for separating components of a fluid sample A specimen collection and separation assembly is provided. The assembly includes a tube having closure secured to the open top of the tube. The closure includes a section that is pierceable by a needle cannula for depositing a liquid specimen in the tube. A separato... | 09/21/2004 |
| 6516953 | Device for separating components of a fluid sample A device and method is provided for separating components of a fluid sample. The device includes a plurality of constituents comprising a container, a liner in the container, a closure for the container and a composite element. The composite element is a ... | 02/11/2003 |
| 6497325 | Device for separating components of a fluid sample A device and method is provided for separating heavier and lighter fractions of a fluid sample. The device includes a plurality of constituents. The constituents include a container, a liner in the container and a composite element in the liner for separa... | 12/24/2002 |
| 6471069 | Device for separating components of a fluid sample A device and method for separating heavier and lighter fractions of a fluid sample. The device includes a flexible collapsible inner container disposed within a substantially rigid outer container. A closure seals the open top end of the outer container. ... | 10/29/2002 |
| 6406671 | Device and method for separating components of a fluid sample A device and method is provided for separating heavier and lighter fractions of a fluid sample. The device includes a plurality of constituents comprising a container and a composite element in the container. The composite element is a separator comprisin... | 06/18/2002 |
| 6302919 | Reverse-flow centrifugal filtration method A filtration device, apparatus, and method of filtration useful for filtering liquid samples are disclosed wherein filtration occurs opposite the direction of centrifugal force. The filtration device is placed within a container that contains the liquid s... | 10/16/2001 |
| 6280622 | System for using ligands in particle separation A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a container containing a binding substance including first particles and ligands attached to the first particles. When the binding su... | 08/28/2001 |
| 6072022 | Physiological fluid separation vehicles having improved resistance to inward migration of therapeutic agents A polyester composition for use in facilitating separation of blood serum or plasma from a cellular portion of blood, the composition containing: (a) a multifunctional acid component comprising: (i) a benzene polycarboxylic acid, and derivatives thereof; ... | 06/06/2000 |
| 5993676 | Container adapter for separating and dispensing liquids A device for adapting a liquid container to enable separation and selective dispensation of two or more immiscible liquids of different densities from the container. The device comprises (a) a first liquid conduit adapted at one end for detachable attachm... | 11/30/1999 |
| 5980734 | Auxiliary apparatus for sampling blood serum An auxiliary apparatus for sampling blood serum according to the invention comprises a disklike flattening member having a flat surface and capable of flattening a separation surface of a blood serum separating medium contained in a sample container by ur... | 11/09/1999 |
| 5906744 | Tube for preparing a plasma specimen for diagnostic assays and method of making thereof A collection device for plasma preparation for diagnostic assays. The device comprises a spray-dried anticoagulant formulation on the interior surface of the device and a thixotropic polymeric gel. The device is an improvement over commercially available ... | 05/25/1999 |
| 5868946 | Gasoline container Water and solid debris are separated from gasoline during its storage within a container. The separation is effected automatically, at low cost and in a highly reliable manner. It is continuous throughout storage and is not reversed by portage of the cont... | 02/09/1999 |
| 5855848 | Centrifuge apparatus for carrying out immunohaemtological analysis of blood and other biological liquids Test tube particularly suitable for carrying out immunological and immunohaematological analysis having at one end thereof an opening for charging reagents and biological liquids to be analyzed and, at the other end thereof, at least one venting opening a... | 01/05/1999 |
| 5853600 | Axial spin blood separation system and method A method for rapid separation of serum or plasma from cells in a whole blood sample uses a cylindrical sample tube having longitudinally-extending internal ribs. A separation gel and the sample are introduced into the tube, and the tube is axially centrif... | 12/29/1998 |
| 5851397 | Auxiliary apparatus for sampling blood serum An auxiliary apparatus for sampling blood serum according to the invention comprises a disklike flattening member having a flat surface and capable of flattening a separation surface of a blood serum separating medium contained in a sample container by ur... | 12/22/1998 |
| 5814220 | Process for producing blood separating agent A process for the production of a blood separating agent is disclosed which comprises supplying a mixture solution containing (a) a separation layer forming high molecular weight compound as the main component and (b) a thixotropy-providing agent selected... | 09/29/1998 |
| 5804082 | Container for separating and dispensing fluids Described are novel containers adapted to separate and dispense two or more fluids of different densities, and novel methods of selectively separating and dispensing two or more fluids of different densities. In one embodiment, the container of this inven... | 09/08/1998 |
| 5650068 | Column agglutination assay and device using biphasic centrifugation The present invention provides a method and device for detecting the presence of binding ligands, especially blood group antigens or antibodies thereto, which utilize a matrix of substantially noncompressable microparticles, which matrix provides superior... | 07/22/1997 |
| 5632895 | Serum separating device and apparatus for serum separation The present invention provides a serum separating device and an apparatus for use in serum separation which is capable of completely separating serum and clot during the separation of a blood sample into serum and clot by means of a centrifugal separation... | 05/27/1997 |
| 5556557 | Method of partitioning blood using polyesters A polyester is provided which facilitates the separation of blood into light and heavy phases via centrifugation in a blood collection vessel. The polyester is useful as a component of a partitioning composition formulated to have appropriate specific gra... | 09/17/1996 |
| 5552064 | Column agglutination assay and device using biphasic centrifugation The present invention provides a method and device for detecting the presence of binding ligands, especially blood group antigens or antibodies thereto, which utilize a matrix of substantially noncompressable microparticles, which matrix provides superior... | 09/03/1996 |
| 5550060 | Method and procedure for preparing red blood fractions Methods and apparatus for separating red blood cells by density are described. Older red blood cells are more dense than younger ones. Certain changes in the physiology are recorded in changes in hemoglobin or the red blood cells. By assaying different ag... | 08/27/1996 |
| 5489386 | Density gradient medium for the separation of cells A density gradient medium for the isolation and enrichment of rare cells, including fetal nucleated erythrocytes from a peripheral blood sample is described. The medium comprises a colloidal density gradient medium dispersed in a meltable gel. In one aspe... | 02/06/1996 |
| 5422018 | Centrifuge tube and adaptor A centrifuge tube and adaptor apparatus is provided which facilitates separation of biological materials and permits easy extraction of a fraction after centrifugation. The tube is a deformable tube with a wide upper chamber and a narrowed lower portion. ... | 06/06/1995 |
| 5419835 | Flow restrictor-separation device A method of partitioning a pre-selected phase of a sample of liquid having a plurality of phases of differing densities, a separation device and a tube containing the separation device. The sample of liquid is placed in a first chamber of a linear tube th... | 05/30/1995 |
| 5308506 | Apparatus and method for separating a sample of blood Apparatus for collecting, containing and separating a sample of blood. Disclosed is an apparatus for separating a pre-selected phase of a sample contained in an enclosed chamber, wherein said apparatus can be used with a separating means which rotates the... | 05/03/1994 |
| 5275731 | Apparatus for rapidly separating blood into filtered fractions A blood collection and separation system having multi-chamber collection assembly having a longitudinal axis. The assembly in a preferred embodiment is rotatable about its longitudinal axis and an alternate embodiment is rotatable about an axis parallel t... | 01/04/1994 |
| 5269927 | Separation device for use in blood collection tubes A serum or plasma collection device including a gel material for partitioning and separating heavier and lighter phases of a fluid sample such as a blood sample. The device preferably includes a member such as a disc-shaped or ring-shaped member or a comb... | 12/14/1993 |
| 5266199 | Serum separating apparatus This invention relates to an apparatus used in a centrifugal separating step for sample preparation in the field of clinical chemistry. Especially, the invention relates to a separating apparatus used for isolating a serum fraction from a freshly isolated... | 11/30/1993 |
| 5256314 | Device and method for the quantitation of a volume of a sediment or of a volume of a fluid which does not flow easily Device for measuring off of a volume of a flowable material, comprising a centrifugable reservoir provided with a bottom, side-walls and an entrance opposite the bottom, and an occludable aperture which is spaced between the bottom and entrance both when ... | 10/26/1993 |
| 5171533 | Biological assay cassette and method for making same A modular reaction cassette has a fluid metering mechanism and valves for releasing fluid which are actuated by various centripetal acellerations generated in an automated patient analysis instrument having a variable speed rotor. Various geometries and s... | 12/15/1992 |
