Platelet Patents (Class 424/93.72)
  • Publication number: 20030133922
    Abstract: ITP may be treated using a method that involves identifying the autoimmune response, collecting allogeneic platelets, sterilizing allogeneic platelets and feeding them orally. Auto-antigens contained on the surface of allogeneic platelets administered to the intestines deactivate or delete lymphocytes responsible for auto-antibody production. This treatment can be used for ITP, specifically targets the cause of the disease and provides the possibility of a sustained response without further medication.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Inventor: John R. Kasha
  • Publication number: 20030077264
    Abstract: Methods and compositions prolonging the storage life and/or increasing the safety of a blood product, such as whole blood, red blood cells, white blood cells, platelets, serum and aqueous additive solutions for storage of such blood products are provided. Storage solutions of this invention comprise a composition selected from the group consisting of garlic extract, allicin, other microorganism-growth-inhibiting compounds derived from garlic, and analogs and derivatives of allicin and said other compounds, in an amount effective to inhibit growth of at least one selected microorganism which is a bacterium, virus, fungus or parasite. The storage additive solutions of this invention can increase platelet storage life by at least about 20%, preferably at least about 40%.
    Type: Application
    Filed: September 18, 2002
    Publication date: April 24, 2003
    Inventor: Laura L. Goodrich
  • Publication number: 20030007957
    Abstract: A wound care preparation free from bovine-derived activating agents is disclosed for use in wound care, for both topical wounds and surgical wounds. The preparation is isolated by first obtaining an amount of whole blood from the patient and treating the whole blood with one or more anti-clotting agents, subjecting the whole blood to a centrifugation process to obtain an amount of platelet-rich plasma, adding to the platelet-rich plasma an amount of anti-clotting neutralizing agent, and mixing the platelet-rich plasma with a structural matrix to increase viscosity of the preparation. In use, the viscous preparation can be applied directly to a wound or surgery incision and the viscous preparation may be mixed with other wound healing agents, growth matrices, or promoters such as anti-fungal agents, anti-biotic agents, and preservatives.
    Type: Application
    Filed: July 3, 2001
    Publication date: January 9, 2003
    Inventors: Calvin Britton, Alex Dellinger, Jim Limbird, Carl Keller, Charles Worden
  • Publication number: 20020172666
    Abstract: A process is disclosed for preparing an autologous platelet gel and membranes thereof comprising mixing a platelet concentrate with a calcium salt and batroxobin. This process encompassing the use of batroxobin as the gel activator allows to overcome the prior art processes drawbacks connected with the use for the same purpose of human of bovine thrombin. A kit is also described for carrying out this process.
    Type: Application
    Filed: May 7, 2002
    Publication date: November 21, 2002
    Inventors: Maria Cristina Sacchi, Marco Bellanda
  • Publication number: 20020159985
    Abstract: The present relates to an autologous bioadhesive sealant composition or fibrin glue prepared by a two-phase method, wherein all of the blood components for the bioadhesive sealant are derived from a patient to whom the bioadhesive sealant will be applied. A platelet rich plasma and a platelet poor plasma are formed by centrifuging a quantity of anticoagulated whole blood that was previously drawn from the patient. In one embodiment, the platelet rich plasma is divided into two portions. In phase one, a compound that reverses the effect of the anticoagulant is added to the first portion and a clot is allowed to form. The clot is then triturated, and the resulting serum containing autologous thrombin is collected. In phase two, the serum obtained from phase one is mixed with the second portion of the platelet rich plasma to form the bioadhesive sealant of the present invention.
    Type: Application
    Filed: June 18, 2002
    Publication date: October 31, 2002
    Inventors: Robert F. Baugh, Lisa M. Lim, Julie S. Johnston, John G. Rivera
  • Patent number: 6413714
    Abstract: The present invention concerns a process for inactivating extracellular and intracellular virus in a biological composition without incurring substantial disruption or inactivation thereof, said process comprising subjecting said composition to a virucidally effective amount of UVA1 irradiation substantially in the absence of UVA2 irradiation for a period of time sufficient to thereby inactivate said virus while retaining functionality of said composition. The biological composition is advantageously a product that contains red blood cells or platelets. The process is advantageously carried out in the presence of an irradiation sensitizer compound and/or a quencher. The present invention also concerns the product substantially identical to that produced by the inventive process.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: July 2, 2002
    Assignee: New York Blood Center, Inc.
    Inventors: Henrietta Margolis-Nunno, Ehud Ben-Hur, Bernard Horowitz
  • Patent number: 6372423
    Abstract: The present invention relates to preparations of functionally active platelets and to a process for stabilizing these functionally active platelets by means of freeze-drying. In particular, a lyophilized or reconstituted platelet composition containing an anticoagulant, a cake forming agent, and an inhibitor of platelet function is disclosed.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: April 16, 2002
    Assignee: Dade Behring Marburg GmbH
    Inventor: Konrad Braun
  • Patent number: 6322785
    Abstract: An autologous platelet gel for bone grafts is comprised of a mixture of platelet-rich-plasma activated by calcium chloride solution, and an aqueous suspension of partially frayed Type I collagen.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: November 27, 2001
    Assignee: Natrex Technologies
    Inventors: Regina Landesberg, Glenn Morris Gainey
  • Patent number: 6303112
    Abstract: A wound healant composition comprising a therapeutically effective amount of activated growth factors and ascorbic acid and/or at least one retinoid and/or at least one antibiotic, that facilitates the growth of new tissue.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: October 16, 2001
    Inventor: Charles E. Worden
  • Patent number: 6218100
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion. In particular, use of 5′-primary aminoalkyl psoralens to inactivate pathogens in platelets is disclosed.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: April 17, 2001
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 6214338
    Abstract: A plasma concentrate comprising one of platelets and platelet releasate and from 5 to 400 mg/ml of fibrinogen. The concentrate further includes a physiologically acceptable carrier comprising water and physiologically acceptable inorganic and organic ions at a physiologically acceptable concentration. The fibrinogen in the concentrate is not significantly denatured. A method for processing blood is further provided.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: April 10, 2001
    Assignee: Plasmaseal LLC
    Inventors: Richard D. Antanavich, Randel Dorian