558 results about "Blood product" patented technology

A method for isolating nucleic acid which comprises:(a) applying a sample comprising cells containing nucleic acid to a filter, whereby the cells are retained as a retentate and contaminants are removed;(b) lysing the retentate from step (a) while the retentate is retained by the filter to form a cell lysate containing the nucleic acid;(c) filtering the cell lysate with the filter to retain the nucleic acid and remove remaining cell lysate;(d) optionally washing the nucleic acid retained by the filter; and(e) eluting the nucleic acid, wherein the filter composition and dimensions are selected so that the filter is capable of retaining the cells and the nucleic acid.Additionally, there is provided a substrate for lysing cells and purifying nucleic acid having a matrix and a coating and an integrity maintainer for maintaining the purified nucleic acid. Also provided is a method of purifying nucleic acid by applying a nucleic acid sample to a substrate having an anionic detergent affixed to a matrix, the substrate physically capturing the nucleic acid, bonding the nucleic acid to a substrate and generating a signal when the nucleic acid bonds to the substrate indicating the presence of the nucleic acid. A kit for purifying nucleic acid containing a coated matrix and an integrity maintenance provider for preserving the matrix and purifying nucleic acid is also provided. Further, there is provided a method for quantifying DNA, such as double-stranded or genomic DNA, isolated from cells, such as leukocytes to determine the numbers of leukocytes in a sample of leukoreduced blood.

Described herein is a method and apparatus for collecting and separating whole blood into its components, including collecting an amount of plasma and red blood cells. The collection and separation system includes a console and a disposable set. The method may include processing the blood through the centrifuge, collecting plasma, collecting red blood cells and returning red blood cells until a desired plasma volume is reached. Then a final volume of red blood cells and plasma may be collected. The disposable set may include a manifold, a CFC, and various components attached by tubing. These components may include one or more solution bags, blood product bags, bacterial filters, leukofilters, and a donor blood collection tube with access needle.

The present invention provides methods for in vitro production of clinically useful quantities of differentiated human blood cells. In various embodiments of the present invention, immortal pluripotent cells are used to produce differentiated blood cell populations using a cell production device. In a specific embodiment, the device is a sequential series of bioreactors utilizing growth media containing specific combinations of maintenance-, proliferation- or differentiation-promoting factors that maintain, expand and promote the maturation and differentiation of the desired cell types. The immortal pluripotent cells can optionally be genetically modified so as to remove histcompatibility or blood group antigens.

The present invention relates to blood products, and more particularly to compositions comprising a modified oxygenated hemoglobin having a high affinity for oxygen and methods for making such compositions. Such compositions according to the present invention have better stability to autooxidation and superior oxygen carrying characteristics.

Methods and devices useful for screening a blood product for a transfusion, pursuant to which leukocytes in drawn whole blood are contacted with a formaldehyde releaser screening preservative so that the presence of any residual leukocytes can be screened. A substantially solid state form preservative for one or more blood components (e.g., leukocytes) and use thereof is also described.

The invention is directed to a reusable container for transporting blood and blood products providing the ability to not only transport, but also to monitor and maintain refrigerated blood or blood products at optimal temperature range for more than twenty-four (24) hours without the use of wet or dry ice, or gel packs.

A method is disclosed for collecting and processing whole blood. Whole blood is collected at several remote donor sites and transported to a central blood-processing center, where information regarding demand for blood products is used to direct processing of whole blood into blood products. Whole blood is initially collected in collection bags unattached to satellite bags instead of commonly used multiple bag sets. When the determination is made at the blood processing center as to which blood products are to be made, the appropriate satellite bags and / or other system components are sterile docked to the blood-collection bag and the whole blood is processed. The use of blood-collection bags initially unattached to satellite bags eliminates waste and simplifies the transportation and processing of whole blood. Also disclosed are blood collection systems that remove leukocytes and collect whole blood into blood-collection bags unattached to satellite bags.

Described herein is a method and apparatus for collecting and separating whole blood into its components, including collecting an amount of leukoreduced red blood cells. The collection and separation system includes a console and a disposable set. The method may include processing the blood through the centrifuge, collecting the leukoreduced red blood cells, and collecting and returning plasma to the source. The disposable set may include a manifold, a CFC, and various components attached by tubing. These components may include one or more solution bags, blood product bags, bacterial filters, leukofilters, and a donor blood collection tube with access needle.

A method and an apparatus are provided for preventing retrograde flow of fluid, e.g., blood products, into a source of sterile substitution fluid (50). The apparatus of the present invention includes a controllable pinch valve member (110) that is placed on a section of a conduit (90) which carries sterile substitution fluid to an extracorporeal circuit (30). In one embodiment, control over the valve member (110) is based on a control unit (120) using fluid pressures that are sensed upstream and downstream of the valve member (110) by upstream sensor (121) and downstream pressure (122) respectively. The valve member (110) is preferably opened only when the upstream pressure is greater than the downstream pressure. This assures that the substitution fluid flows only in a single direction when the pinch valve member (110) completely occludes the conduit (90) when in a closed position. Therefor, blood will not contaminate the sterile fluid by being drawn into the conduit (90) due to pressure differences.

A system for transferring blood product between a blood storage bag and a processing bag. The system includes an airtight containment chamber for supporting therein one or more blood storage bags. A door is provided for access to the chamber and there is included an airtight fixture that allows tubing from the blood storage bag to exit the chamber. A fluid pump is coupled to the containment chamber for establishing either pressure or vacuum within the containment chamber. A controller controls the air pump to, in turn, control the transfer of a blood product.

Methods and devices are provided for reducing the concentration of low molecular weight compounds in a biological composition containing cells while substantially maintaining a desired biological activity of the biological composition. The device comprises highly porous adsorbent particles, and the adsorbent particles are immobilized by an inert matrix.

It is intended to provide a polymer for coating a leukocyte removal filter material which is excellent in the capability of removing leukocytes. It is further intended to provide a filter whereby both of leukocytes and platelets can be highly efficiently removed from a blood product containing leukocytes and platelets. The above objects can be achieved by using a polymer for coating a leukocyte removal filter material which comprises a unit originating in a hydrophobic polymerizable monomer, a unit originating in a polymerizable monomer containing a basic nitrogen-containing part, and a unit originating in a polymerizable monomer containing a protonic neutral hydrophilic part.

The present invention relates to compositions and methods for treatment of blood and blood products using gaseous nitric oxide. The treatment involves the contacting blood or a blood product with gaseous nitric oxide.

Described herein is a method and apparatus for collecting and separating whole blood into its components, including collecting an amount of plasma. The collection and separation system includes a console and a disposable set. The method may include processing the blood through the centrifuge, collecting the plasma, and returning red blood cells remaining in the centrifuge to the source. The disposable set may include a manifold, a CFC, and various components attached by tubing. These components may include one or more solution bags, blood product bags, bacterial filters, leukofilters, and a donor blood collection tube with access needle.

Methods and devices are provided for reducing the concentration of low molecular weight compounds in a biological composition, while substantially maintaining a desired biological activity of the biological composition. The device comprises highly porous adsorbent particles, and the adsorbent particles are immobilized by an inert matrix. The matrix containing the particles is contained in a housing, and the particles range in diameter from about 1 μm to about 200 μm. The matrix can be fibrous, and the particles can have a surface area greater than 750 m2 / g and a pore diameter between about 25 and 800 Å. The device can be used to adsorb and remove a pathogen-inactivating compound that is a nucleic acid-binding compound such as psoralen, an acridine derivative or a dye from a biological composition such as a blood product.

This device for processing a blood product sample included in tubes (18) loaded in cassettes (12) and closed with plugs. The moving means 10 is designed to individually move the cassettes on a predetermined path. The agitating means 30 has at least one pickup mechanism (32) that can be started by a driving means (88), and picks up at least one selected tube from the immobile cassette on the path, moves the tube far from the cassette, agitates the tube and returns it to the cassette. The sampling means (34) is designed to take away a predefined sample quantity from the pre- agitated tube returned to the cassette and applicable to a blood analysis.

Methods and compositions are provided for treating a subject for aging-associated conditions, e.g., cognitive impairment conditions. Aspects of the methods include administering a young plasma-comprising blood product to an individual in need thereof, e.g., an individual suffering from or at risk of developing the aging-associated condition, e.g., aging-associated cognitive impairment. Also provided are compositions and kits thereof that find use in practicing methods of the invention.

A suitable container for plasma lyophilization has been designed for lyophilization (lyo-bag), storage, reconstitution and administering of blood products. A rigid support frame for use with a lyo-bag with sidewalls was designed as an external removable supportive system, which provides the necessary stability for the flexible container during lyophilization. A removable bottom wall support sheet was designed for use with any flexible container for lyophilization.

A method and apparatus for inactivating contaminants, particularly nonenveloped viruses, in blood products without the need for quenchers in the blood products. The blood product is flowed through a flow meter at a controlled flow rate and subjected to type C ultraviolet radiation, where the irradiation dose received by the blood product is less than 640 joules / m2. The blood product does not contain quenchers when being irradiated, and the blood product retains more than 85% of its Factor VIII activity after being subjected to the radiation. The produced blood product is free of viruses and quenchers, avoiding potential toxicity due to the quenchers. The apparatus includes a source of UVC light, a quartz tube containing the blood product while it is exposed to the UVC light, a flow meter for controlling the flow rate of the blood product to be treated, and a pump. The UV light preferably emits light at 254 nm.

System and method for detecting and measuring chemical perturbations in a sample. The system and method are useful for non-invasive pH monitoring of blood or blood products sealed in storage bags.

A reusable container for transporting blood and blood products, which includes an outer case including a lid, and an insulating layer substantially inside the outer case and the lid. A generally rigid water-resistant well has a lip which abuts walls of the outer case so as to substantially seal the insulated layer to the outer case. At least one cooling element is provided, which is capable of maintaining temperature within a prescribed temperature range for predetermined periods of time, the cooling element being disposed within the well and at least partially surrounding a receptacle area. A caddy is located in the receptacle area, at least partially surrounded by the cooling element, and is designed to accommodate at least one unit of blood or blood products. The cooling element may include phase change gel sealed within a plastic surround, and is designed to be separately removable and freezable prior to use.

A suitable container for plasma lyophilization has been designed for lyophilization (lyo-bag), storage, reconstitution and administering of blood products. A rigid support frame for use with a lyo-bag with sidewalls was designed as an external removable supportive system was designed, which provides the necessary stability for the flexible container during lyophilization. A removable bottom wall support sheet was designed for use with any flexible container for lyophilization.

A method for diagnosing Alzheimer's disease(AD) is disclosed. The method involves directly detecting the presence of a biochemical marker, specifically human glutamine synthetase, in bodily fluid, preferably blood or a blood product. The detection is by an immunoassay incorporating an antibody specific to human glutamine synthetase. In addition, a method for distinguishing between AD and non-AD dementia is disclosed.

A quality control material is disclosed which is used to monitor the calibration or used for recalibration of instruments used to screen for interferents in serum or plasma specimens. In particular, the quality control material disclosed is used to monitor instrument calibrations or used for recalibration for instruments which assess the amount of hemolysis, turbidity, bilirubinemia and biliverdinemia, either separately, or any two, or any three, or all four simultaneously, in plasma or serum samples. The quality control material does not contain any blood products such as plasma lipids, bile pigments, or hemoglobin, is stable at room temperature, and is ready for use with up to four constituents.