Anticoagulation Patents (Class 514/822)
  • Patent number: 5788965
    Abstract: The catalytic active site of Factor VII is modified to produce a compound which effectively interrupts the blood coagulation cascade. The modifications render Factor VIIa substantially unable to activate plasma Factors X or IX. Pharmaceutical compositions of the modified Factor VII are used to treat a variety of coagulation-related disorders.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 4, 1998
    Assignees: Novo Nordisk A/S, ZymoGenetics, Inc.
    Inventors: Kathleen L. Berkner, Lars Christian Petersen, Charles E. Hart, Ulla Hedner, Claus Bregengaard
  • Patent number: 5786330
    Abstract: The invention relates to the compounds of formula (I) (SEQ ID NO: I:H-phe-A.sub.1 -Arg-Pro-(Gly).sub.4 -Asn-Gly-Asp-Phe-Glu-Abo-Ile-Pro-Glu-Glu-A.sub.2 -Leu-glu-OH(I)in which A.sub.1 and A.sub.2 are as defined in the description. Medicinal products containing the same are useful as anticoagulants.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: July 28, 1998
    Assignee: Adir et Compagnie
    Inventors: Jean-Luc Fauchere, Christophe Thurieau, Tony Verbeuren, Alain Rupin, Serge Simonet
  • Patent number: 5770578
    Abstract: The use of triterpensaponins, like notoginsenoside R1 (NR1) and/or astragaloside (ASIV) for the production of medicaments for stimulating the fibrinolytic activity and blocking the endotoxin effect, especially for the treatment of patients and animals which suffer from endotoxin shock or to limit the endotoxin shock. Corresponding medicaments are also suitable prophylactive and therapeutic treatment of patients of coronary heart disease, peripheral arterial disease for patients who suffer from angina pectoris and for the prevention of such diseases in healthy persons.
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: June 23, 1998
    Assignee: Bergi GmbH
    Inventors: Bernd Binder, Weijian Zhang, Johann Wojta
  • Patent number: 5767108
    Abstract: A method of treating a patient with a medical device having immobilized heparin on a blood-contacting surface in which the covalently attached heparinized surface is provided with an adsorbed protein which may be activated by the immobilized heparin to block the coagulation of fibrinogen. Antithrombin III is the preferred adsorbed protein. The adsorbed protein is maintained on the immobilized heparin surface until the medical device is placed into contact with the patient's blood. When in contact with the patient's blood, the adsorbed protein will prevent initial thrombin formation at the biomaterial-blood interface. The preadsorption of ATIII is accomplished under conditions advantageous to maximum heparin/ATIII binding. When the preadsorbed surface comes in contact with whole blood, the maximum advantage of prophlactic properties of ATIII/heparin are obtained.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: June 16, 1998
    Assignee: Medtronic, Inc.
    Inventors: Patrick Cahalan, Theo Lindhout, Benedict Fouache, Michel Verhoeven, Linda Cahalan, Marc Hendriks, Ron Blezer
  • Patent number: 5763403
    Abstract: A lupus anticoagulant like protein obtained from Agkistrodon halys brevicaudus venom, methods and tests for detecting the presence of lupus anticoagulant in blood and methods of treating antiphospholipid syndrome and thrombotic disorders using the protein are disclosed.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: June 9, 1998
    Assignee: Eric Chun-Tet Lian
    Inventor: Eric Chun-Yet Lian
  • Patent number: 5762944
    Abstract: The invention presents an antithrombotic resin which is prepared by blending at least one type of antithrombotics, in polyurethane or polyurethane urea polymerized by using at least one type of polyether diol selected from the group consisting of polyol containing a polyoxyethylene group expressed in formula (I).paren open-st.CH.sub.2 CH.sub.2 O.paren close-st..sub.n (I)(where n is a number-average degree of polymerization of 1 to 100) and polyol containing a polyoxyethylene group expressed in formula (II).paren open-st.CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 O.paren close-st..sub.m(II)(where m is a number-average degree of polymerization of 1 to 100). This antithrombotic resin is capable of eluting the antithrombotic in the blood for a long time at high concentration. By using the antithrombotic resin of the invention, antithrombotic tube, antithrombotic film, antithrombotic coat, and others are obtained.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: June 9, 1998
    Assignees: Otsuka Pharmaceutical Factory, Inc., Nisshinbo Industries, Inc., Otsuka Pharmaceutical Co., Ltd.
    Inventors: Fujio Inoue, Masamitsu Izumi, Satoru Hayashi, Nobuhisa Tsutsumi, Kunihiro Fukuoka
  • Patent number: 5747536
    Abstract: The coordinated therapeutic use of L-carnitine, lower alkanoyl L-carnitines or the pharmacologically acceptable salts thereof with resveratrol, resveratrol derivatives or resveratrol-containing natural products is disclosed for producing a medicament for the prophylaxis and treatment of cardiovascular disorders, peripheral vascular diseases and peripheral diabetic neuropathy.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: May 5, 1998
    Assignee: Sigma-Tau Industrie Farmaceutiche Riunite S.p.A.
    Inventor: Claudio Cavazza
  • Patent number: 5741779
    Abstract: Antithrombotic materials and methods are provided for the treatment of thrombotic disorders, in which therapeutically effective amounts of BPI protein products are administered.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: April 21, 1998
    Assignee: XOMA Corporation
    Inventors: Mark L. White, William Steve Ammons
  • Patent number: 5739101
    Abstract: A tissue factor protein mutant capable of neutralizing the ability of endogenous tissue factor to induce coagulation is provided. A representative tissue factor mutant designated K165A, K166A TF is useful in a method for inhibiting thrombin-induced platelet aggregation in a mammal, either separately or in combination with a thrombolytic agent, an anticoagulant, or a GPII.sub.b III.sub.a inhibitor.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: April 14, 1998
    Assignee: Genentech, Inc.
    Inventors: Soumitra Roy, Gordon A. Vehar
  • Patent number: 5720956
    Abstract: A method of inhibiting platelet aggregation with an agent which is able to normalize and enhance platelet reactivity without adversely affecting the bleeding time. The method additionally prevents adrenaline-induced platelet aggregation.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: February 24, 1998
    Inventor: Peter Rohdewald
  • Patent number: 5716795
    Abstract: The present invention provides a one-stage assay which uses soluble thrombomodulin for directly determining the functional status in plasma of the protein C system. The activity of the protein C system is used to determine the risk of thrombosis in the host individual. Alternatively, the activity of the protein C system is used to determine the presence of a malignant cancer and other pathologies. In another embodiment of the invention, a heparin adsorbent step is added to the assay process which reveals the existence of an additional component in protein C activation, and thus the existence of an additional component in the regulation of blood coagulation.
    Type: Grant
    Filed: January 3, 1996
    Date of Patent: February 10, 1998
    Inventor: John T. Matschiner
  • Patent number: 5711959
    Abstract: A biocompatible material comprising a substrate and a phospholipid moiety covalently attached thereto in an amount and orientation effective to provide an improved nonthrombogenic surface relative to the substrate without the phospholipid moiety covalently attached thereto is provided. In particularly preferred embodiments, the biocompatible material has the following structure: ##STR1## wherein: R.sup.1 is a (C.sub.1 -C.sub.30)alkyl group; R.sup.2 is a (C.sub.1 -C.sub.30)alkylene group; m is 1-4; n is 1-4; and L is a divalent linking group covalently bonded to the substrate and to the phospholipid moiety.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: January 27, 1998
    Assignee: Regents of the University of Minnesota
    Inventors: Anja S. Kohler, Daniel L. Mooradian, Leo T. Furcht
  • Patent number: 5712247
    Abstract: A method for modulating, regulating and/or neutralizing heparin-dependent anticoagulant reactions by administration of lactoferrrin or polypetide fragments thereof. Said method may be used to correct the "heparin-induced" prolongation of blood coagulation and other coagulapathies in cardiopulmonary bypass, cardiac catheterization and hemodialysis patients. Said method may further be used to treat disorders and diseases related to unregulated or unmodulated heparin activity. Said method of treatment is comprised of administration of lactoferrin or fragments thereof comprised of the heparin binding domain(s) of lactoferrin.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: January 27, 1998
    Assignee: University of North Carolina
    Inventors: Hai-Feng Wu, Frank Clement Church
  • Patent number: 5709993
    Abstract: Process for preventing activation of enzyme systems such as coagulation and activation of complement system or bradykinin system in extracorporeal blood circulation in haemodialysis and similar procedures, by means of sequential anticoagulation, which comprises adding in the first 15 to 30 minutes of haemodialysis or of similar procedure, sodium citrate or nafamostat mesylate, into a dialysis line as anticoagulant, then stopping the addition of citrate or nafomostat mesylate, and adding heparin in the conventional total dose, until the end of dialysis.By using this process, a universal routine haemodialysis or a similar procedure, is made possible without further adaptations according to the kind of patient.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: January 20, 1998
    Inventor: Jadranka Buturovic-Ponikvar
  • Patent number: 5710131
    Abstract: A protein isolated from crude extracts of Hirudo medicinalis is disclosed, which strongly inhibits the binding to collagen of platelets and their subsequent activation, which leads to platelet aggregation and thrombus formation. Additionally the protein prevents binding of von Willebrand factor to collagen. Described is a method for isolation and purification of the protein as well as its use for blocking collagen-stimulated platelet aggregation. The new protein (Brandinin) has a molweight of approximately 15 kD, binds to collagen but has no collagen-cleaving activity. The protein is useful in the prophylaxis, prevention and treatment of thrombotic diseaeses and for coating of blood-contacting materials, rendering them thromboresistant.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: January 20, 1998
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Jurgen Hemberger, Guido Melzer
  • Patent number: 5681823
    Abstract: A novel composition, P.sup.1, P.sup.4 -dithio-P.sup.2, P.sup.3 -monochloromethylene 5', 5'"-diadenosine P.sup.1, P.sup.4 -tetraphosphate, is disclosed. The composition is useful as a therapeutic agent for prevention of thrombosis and for modulating a thrombolytic effect in a mammal.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: October 28, 1997
    Assignee: PRP Inc.
    Inventors: Byung K. Kim, Paul C. Zamecnik
  • Patent number: 5646130
    Abstract: An oligosaccharide containing about 20 monosaccharide units is provided. This oligosaccharide designated (M.sub.9 G).sub.2 is a copolymer .beta.-D-(1.fwdarw.4) connected mannuronopyranose units and an .alpha.-L-(1.fwdarw.4) connected guluronic acid unit at a ratio of 9:1. In addition, 40-60% of the carboxylic functional groups are esterified with propanol, 2-propanol or methanol, and substantially all of the C.sub.2 carbons and about 50% of the C.sub.3 positions of the residues are sulfated, such that the resulting compound contains about 7-13% organic sulfur. The compounds are used for the prevention and therapy of thrombosis-induced ischemic vascular diseases of the heart and the central nervous system, for treating acute thrombosis-induced brain infarction and in coronary ischemia-induced angina, and for treating hyperlipoproteinemia and lowering the relative amount of cholesterol.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: July 8, 1997
    Assignee: Ocean University of Oingdao
    Inventor: Guan Hua Shi
  • Patent number: 5614493
    Abstract: The use of human Protein C for the prevention and treatment of deposition or aggregation of thrombocytes, microparticles of thrombocytes, and leucocytes is described. In addition, an improved method for the extra-corporeal treatment of body fluids is disclosed.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: March 25, 1997
    Assignee: Immuno AG
    Inventors: Johann Eibl, Hans-Peter Schwarz, Miguel Lozano-Molero
  • Patent number: 5612378
    Abstract: The present invention is directed to non-peptidic factor Xa inhibitors which are useful for the treatment of arterial and venous thrombotic occlusive disorders, inflammation, cancer, and neurodegenerative diseases. The factor Xa inhibitors provide compounds of structure: ##STR1## wherein each R.sup.1 is independently one of alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl, heteroaryl or substituted heteroaryl;each R.sup.2 and R.sup.3 is independently one of hydrogen, alkyl, aryl or arylalkyl;Y is a bond, or is one of --(CH.sub.2).sub.p --, cycloalkyl, aryl or C.sub.2-10 heterocycle; andm, n and p are each independently 1 to 10.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 18, 1997
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Lu Tianbao, Richard M. Soll
  • Patent number: 5597804
    Abstract: The present invention is directed to N-sulfonyl arginine alpha-keto-amide derivatives, their pharmaceutically acceptable salts and compositions thereof which are useful as antithrombotic agents in mammals and also the use of these compounds as antithrombotic agents. Also, disclosed are methods of using these inhibitors in their various embodiments as therapeutic agents for disease states characterized by disorders of the blood coagulation process. Further disclosed are compounds useful as intermediates in the preparation of these compounds.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: January 28, 1997
    Assignee: Corvas International, Inc.
    Inventors: Thomas R. Webb, Todd A. Miller, George P. Vlasuk, Matthew M. Abelman
  • Patent number: 5595974
    Abstract: A medicament for the treatment and/or prophylaxis of restenosis and arterial sclerosis after percutaneous transluminal angioplasty, characterized in that the medicament contains batroxobin as an effective component.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: January 21, 1997
    Assignee: Tobishi Pharmaceutical Co., Ltd.
    Inventor: Takanobu Tomaru
  • Patent number: 5585361
    Abstract: Methods of preventing or treating thrombotic conditions by administering pharmaceutical compositions containing hyaluronic acid are described.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: December 17, 1996
    Assignees: Genzyme Corporation, The Trustees of Boston University
    Inventors: James W. Burns, Cesare R. Valeri
  • Patent number: 5583111
    Abstract: The invention relates to novel polypeptides with antithrombin activity obtainable from extracts of tissues or secretions of leeches of the order Rhynchobdellida, particularly of the species Theromyzon tessulatum. The polypetides have molecular weights of about 14 kD, 9 kD and 3 kD and can be used in pharmaceutical compositions for the treatment of thrombosis related disorders and events.
    Type: Grant
    Filed: January 5, 1995
    Date of Patent: December 10, 1996
    Assignee: Merck Patent Gesellschaft Mit Beshrankter Haftung
    Inventors: J urgen Hemberger, Roy Sawyer, Sabine Wolf, Johannes Dodt
  • Patent number: 5574016
    Abstract: The present invention concerns glycoprotein IIa/IIIb antagonists and platelet aggregation inhibitors of the formula (I): ##STR1## wherein R.sup.1 is aryl which may have one or more suitable substituent(s),R.sup.2 is carboxy(lower)alkyl or protected carboxy(lower)alkyl,R.sup.3 is carboxy or protected carboxy,A.sup.1 is alkylene which may have one or more suitable substituent(s),A.sup.2 is a group of the formula: ##STR2## (wherein R is lower alkyl), or a group of the formula:--NHCH.sub.2 CH.sub.2 CO--,A.sup.3 is lower alkylene which may have one or more suitable substituent(s),l, m and n are each the same or different an integer of 0 or 1,with proviso that A.sup.2 is not a group of the formula:--NHCH.sub.2 CH.sub.2 CO--,when l is an integer of 0.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: November 12, 1996
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Hisashi Takasugi, Akito Tanaka, Hiroyoshi Sakai, Takatoshi Ishikawa
  • Patent number: 5569463
    Abstract: A medical device and a method for its manufacture. The function of the medical device requires exposure of the device to the tissue of a patient. The device has a tissue-exposed portion constructed to release an agent that inhibits adverse reaction to the presence of the device defined by a polymeric surface-layer overlying in a supported manner a polymer defining a reservoir. The reservoir incorporates the agent in a manner that permits substantially free outward release of the agent from the reservoir and the overlying layer defines metering outward passages constructed to control the outward migration of the agent to enable prolonged release of the agent from the surface of the medical device to prevent the adverse reaction due to the presence of the device.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 29, 1996
    Assignee: Harbor Medical Devices, Inc.
    Inventors: Michael N. Helmus, M. Joshua Tolkoff, Carol L. Raleigh
  • Patent number: 5567765
    Abstract: This invention relates to physiologically acceptable emulsions of perfluorocarbon ether hydrides having 8 to 12 carbon atoms. These novel emulsions have various medical applications. They are especially useful medically as contrast media for various biological imaging modalities such as nuclear magnetic resonance, .sup.19 F-magnetic resonance imaging, ultrasound, x-ray, and computed tomography, as oxygen transport agents or "artificial bloods" in the treatment of heart attack, stroke, and other vascular obstructions, as adjuvants to coronary angioplasty and in cancer radiation treatment and chemotherapy.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: October 22, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George G. I. Moore, Richard M. Flynn, Miguel A. Guerra
  • Patent number: 5563156
    Abstract: This invention relates to novel polyfluorinated alkyl derivatives of certain tripeptides, to the methods for their preparation, the intermediates therefore, to their use in inhibiting thrombin and lung tryptase and in their end-use application as anti-coagulants useful in treating thrombophlebitis and coronary thrombosis and in the treatment of asthma.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 8, 1996
    Assignee: Merrell Pharmaceuticals Inc.
    Inventors: Bernhard Neises, Axel Ganzhorn, C eline Tarnus, Robert J. Broersma, Jr.
  • Patent number: 5556632
    Abstract: A biocompatible material comprising a substrate and a phospholipid moiety covalently attached thereto in an amount and orientation effective to provide an improved nonthrombogenic surface relative to the substrate without the phospholipid moiety covalently attached thereto is provided. In particularly preferred embodiments, the biocompatible material has the following structure: ##STR1## wherein: R.sup.1 is a (C.sub.1 -C.sub.30)alkyl group; R.sup.2 is a (C.sub.1 -C.sub.30)alkylene group; m is 1-4; n is 1-4; and L is a divalent linking group covalently bonded to the substrate and to the phospholipid moiety.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: September 17, 1996
    Assignee: Regents of the University of Minnesota
    Inventors: Anja S. Kohler, Daniel L. Mooradian, Leo T. Furcht
  • Patent number: 5556643
    Abstract: An anticoagulant for blood contains sodium hydroxide, citric acid and sodium hexametaphosphate. A method of preventing the clotting of blood using the anticoagulant also is disclosed.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: September 17, 1996
    Assignee: Hydrite Chemical Co.
    Inventors: Leo F. Bohanon, Robert A. Adams, Daniel R. Kruszka
  • Patent number: 5554527
    Abstract: The invention relates to an agent for the preservation, storage and suspension of cells, especially erythrocytes, which contains a chelating agent for multiply charged metal ions, in addition to other substances known to those skilled in the art, such as, for example, electrolytes and sugars.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: September 10, 1996
    Assignee: Behringwerke Aktiengesellschaft
    Inventor: Karl Fickenscher
  • Patent number: 5552296
    Abstract: In a method for the determination of coagulation parameters in sample material via a reaction cascade in which a thrombin-catalyzed formation of a fibrin clot from fibrin monomers occurs and the formation of the fibrin clot is measured, an inhibitor of F XIII is added. By this means the reaction vessel can be used several times for coagulation tests.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: September 3, 1996
    Assignee: Boehringer Mannheim GmbH
    Inventors: Enno Adema, Ulrike Gebert, Reinhard Herz
  • Patent number: 5529986
    Abstract: The present invention relates to a water-soluble conjugate having antithrombin-binding activity comprising a substantially straight-chained organic polymer backbone having at least 30 molecules of sulfated glycosaminoglycans distributed along the polymer backbone, wherein the sulfated glycosaminoglycans are attached to the polymer backbone at a single point of attachment which is not responsible for the antithrombin-binding activity. The present invention also relates to a surface having antithrombin-binding properties prepared with the conjugate and methods of preparing said conjugate and said surface.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: June 25, 1996
    Assignee: Corline Systems AB
    Inventors: Rolf Larsson, David Westberg, Birgitta Formgren, Anders Uhlin
  • Patent number: 5523292
    Abstract: The present invention comprises a method of alleviating restenosis, post-PTCA or other coronary arterial intervention, and more particularly, to the use of ancrod to prevent restenosis in the coronary arteries.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: June 4, 1996
    Inventors: Robert Schwartz, Robert A. O'Brien
  • Patent number: 5523287
    Abstract: A novel thrombin-inhibitory protein from assassin bugs with a molecular weight of about 12,000 dalton and the N terminus Glu-Gly-Gly-Glu-Pro-Cys-Ala-Cys-Pro-His-Ala-Leu-His-Arg-Val-Cys-Gly-Ser-As p is described. The protein is suitable for controlling diseases.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: June 4, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Friedrich, Siegfried Bialojan, Burkhard Kroeger, Christoph Kuenast
  • Patent number: 5519005
    Abstract: A method of inhibition of cellular and molecular level biological interactions which are dependent on RGD interactions is disclosed. The method comprises administering a compound of the formula IH.sub.2 N--C(.dbd.NH)--NH--CH.sub.2 --A--CH.sub.2 --CO.sub.2 H (I)and pharmaceutically acceptable salts thereof, wherein A is a chain of 9 atoms selected from the group consisting of: ##STR1## wherein each of x, n and m is at least 1; in chains (i) and (ii) n is at most 6; in chains (iii) and (iv) the sum of x+n+m is 5; and the sum of n+m is 4 in chain (v) and 3 in chain (vi).
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: May 21, 1996
    Assignee: Yeda Research and Development Co. Ltd.
    Inventors: Ofer Lider, Noam Greenspoon, Rami Hershkoviz, Ronen Alon
  • Patent number: 5472938
    Abstract: The present invention relates to aqueous depot formulations of hirudin, particularly desulphatohirudin, which are very stable. These formulations contain water, hirudin, and calcium, magnesium, or zinc ions in the form of water insoluble salts, the salts being in a concentration of from 100 mM to 600 mM.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: December 5, 1995
    Assignee: Ciba-Geigy Corporation
    Inventor: Tudor Arvinte
  • Patent number: 5462752
    Abstract: Methods for inhibiting the attachment of platelets to a site of an injury are provided. The methods involve administering to a subject that has sustained an injury an effective amount of a platelet binding-site agent. Preferred platelet binding-site agents are platelets that are substantially free of platelet substances contained in lysosomes, dense granules or alpha granules.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: October 31, 1995
    Assignee: PRP, Inc.
    Inventors: Francis C. Chao, deceased, Michael S. Chao, heir, Mark S. Chao, heir, Lorraine S. Chao, heir
  • Patent number: 5455040
    Abstract: The present invention provides a method for surface modifying a substrate, such as an implant, to provide the substrate with anticoagulant activity and resistance to the deposition of plasma proteins; and the resulting substrate. The surface of the substrate is modified by first depositing a film of a plasma polymer such as plasma polymerized N-vinyl-2-pyrrolidone or allyl alochol on the surface of the substrate. Optionally, a neutral hydrophilic spacer molecule is attached to the plasma polymer. An anticoagulant, such as heparin, is attatched either directly to the substrate or indirectly to the substrate via attatchment to the spacer molecule, when such spacer molecule is present.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: October 3, 1995
    Assignee: Case Western Reserve University
    Inventor: Roger E. Marchant
  • Patent number: 5447720
    Abstract: A composition and method of treatment of hemoglobinopathies, such as, for example, sickle cell disease and thalassemia, wherein an inventive extract used in such treatment is obtained from alfalfa and other certain plant materials, preferably using a hydroxide base and hexane. In the most preferred embodiment, the plant material is first extracted with 1,1,1-trichloroethane and a hydroxide base, followed by extraction with hexane. The polar acidic compounds present in alfalfa and other plant materials selectively dissolve in the hexane phase and exhibit good antisickling activity in vitro. Further, these active compounds which comprise the inventive extract are effective in vivo by significantly alleviating the many clinical manifestations of sickle cell disease and thalassemia experienced by the affected patients.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: September 5, 1995
    Assignee: Sunday O. Fadulu
    Inventor: Sunday O. Fadulu
  • Patent number: 5447724
    Abstract: A medical device and a method for its manufacture. The function of the medical device requires exposure of the device to the tissue of a patient. The device has a tissue-exposed portion constructed to release an agent that inhibits adverse reaction to the presence of the device defined by a polymeric surface-layer overlying in a supported manner a polymer defining a reservoir. The reservoir incorporates the agent in a manner that permits substantially free outward release of the agent from the reservoir and the overlying layer defines metering outward passages constructed to control the outward migration of the agent to enable prolonged release of the agent from the surface of the medical device to prevent the adverse reaction due to the presence of the device.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: September 5, 1995
    Assignee: Harbor Medical Devices, Inc.
    Inventors: Michael N. Helmus, M. Joshua Tolkoff, Carol L. Raleigh
  • Patent number: 5424291
    Abstract: Compounds of formula I relate to the peptide sequence of human fibrogen A.alpha. chain, with modified positions 14 through 17 (P.sub.3 -P.sub.1.sup.1), which may be a useful inhibitor of thrombin. The antithrombin and anticoagulant compounds of this invention, therefore, have therapeutic potential in treatment or prophylaxis of thrombosis and related atherosclerotic diseases. A procedure for the synthesis of peptides according to formula I is also described.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: June 13, 1995
    Inventors: Butrus Atrash, David M. Jones, Michael Szelke
  • Patent number: 5407671
    Abstract: A description is given of a one-component tissue adhesive containing, in aqueous solution, fibrinogen, F XIII, a thrombin inhibitor, prothrombin factors, calcium ions and, where appropriate, a plasmin inhibitor and of a process for the production thereof.This adhesive can be reconstituted from a freeze-dried form with water. It can contain all active substances in pasteurized form and is then free of the risk of transmission of hepatitis and HTLV III.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: April 18, 1995
    Assignee: Behringwerke Aktiengesellschaft
    Inventors: Norbert Heimburger, Peter Fuhge, Hansjorg Ronneberger
  • Patent number: 5401730
    Abstract: Patients having a predisposition for thrombus formation are effectively treated with compositions of acetylsalicylic acid, citric acid, thiamine and/or a zinc salt. The combination of aspirin and citric acid has been found to be significantly more effective in inhibiting platelet aggregability than aspirin alone, and thiamine contributes to the reduction in thrombotic potential by reducing plasma fibrinogen levels. Accordingly, new methods and compositions are disclosed for reducing the thrombotic potential of human or animal subjects, such as in the prophylaxis or treatment of atherosclerosis, vascular surgery patients or other cardiovascular diseases.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: March 28, 1995
    Assignee: The Hope Heart Institute
    Inventors: Lester R. Sauvage, Svetlana Kaplan, Alexander Kaplan
  • Patent number: 5399487
    Abstract: The present invention encompasses compounds of formula I: ##STR1## and the pharmaceutically acceptable non-toxic salts thereof; wherein R.sub.1 is hydrogen, lower alkyl, alkenyl, alkynyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, or phenylalkyl;R.sub.2 is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, or phenylalkyl; orNR.sub.1 R.sub.2 forms a nitrogen heterocycle; andR.sub.3 is hydrogen, an amino acid or a peptide residue.These compounds may be employed as substrates in assays for determining proteolytic enzyme activity or as enzyme inhibitors. The invention also encompasses methods for determining proteolytic enzyme activity using the compounds of formula I.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: March 21, 1995
    Assignee: Haematologic Technologies, Inc.
    Inventors: Saulius Butenas, Jeffrey H. Lawson, Kenneth G. Mann
  • Patent number: 5393760
    Abstract: Compounds of the formula ##STR1## wherein L, M, R, T and X are set forth in the description, as well as hydrates or solvates thereof, which inhibit thrombin-induced platelet aggregation and clotting of fibrinogen in plasma, are described. The compounds of formula I are prepared by amidination or, depending on whether L is NH or O, by amide formation or esterification.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: February 28, 1995
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Jean Ackermann, David Banner, Klaus Gubernator, Paul Hadvary, Kurt Hilpert, Klaus Muller, Ludvik Labler, Gerard Schmid, Thomas B. Tschopp, Hans P. Wessel, Beat Wirz
  • Patent number: 5371072
    Abstract: Asp-Pro-Arg alpha-keto-amide derivatives, and their pharmaceutically acceptable salts and compositions, for use as antithrombotic agents in mammals are disclosed. The method of use of these inhibitor compounds for treatment or prevention of conditions of abnormal thrombus formation in mammals is also disclosed. Further disclosed are alpha-hydroxy amide compounds used as intermediates in the preparation of the keto-amide compounds.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: December 6, 1994
    Assignee: Corvas International, Inc.
    Inventors: Thomas R. Webb, Todd A. Miller, George P. Vlasuk
  • Patent number: 5354770
    Abstract: A restenosis inhibiting agent for the treatment or prevention of restenosis after percutaneous transluminal coronary angioplasty which comprises a pharmaceutically effective amount of a compound of the following general formula or a pharmaceutically acceptable salt thereof as an active ingredient: ##STR1## wherein R is an imidazolyl group, a thiazolyl group or a pyridyl group, n is an integer of 1 or 2, and m is an integer of 1 to 4.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: October 11, 1994
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Yoshimasa Yabe, Tomoyoshi Suzuki, Tomoo Shiozawa
  • Patent number: 5352667
    Abstract: Non-peptidic RXD analogues are provided that inhibit biological cellular and molecular interactions which are dependent on RXD recognition, wherein X is one of the amino acid residues G, E, Y, A or F. In particular, RGD surrogates are provided having no sequence of .alpha.-natural amino acids and comprising a guanidino and a carboxyl terminal groups spaced by a chain of 11 atoms, at least 5 of which are carbon atoms. The compounds inhibit cell adhesion and are useful for the treatment of several pathological disorders, e.g., thrombosis, autoimmune diseases, metastasis, allergy, host-graft reactions and inhibition of scar tissue formation.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: October 4, 1994
    Inventors: Ofer Lider, Noam Greenspoon, Rami Hershkoviz, Ronen Alon
  • Patent number: 5348873
    Abstract: An anti-thrombogenic substance is immobilized on a base of a medical device to impart anti-thrombogenic properties to the medical device. The method comprises the steps of applying a photo-reactive azide derivative macromolecular material to a base to form a bonding layer, coating the bonding layer with a macromolecular layer composed of a water-soluble photo-crosslinking macromolecular material containing the anti-thrombogenic substance, and irradiating the base with ultraviolet light with the bonding layer and the macromolecular layer formed thereon to develop inter-molecular covalent bonding in the bonding layer. The macromolecular layer containing the anti-thrombogenic substance is thus fixed onto the base. Concurrently, the anti-thrombogenic substance is immobilized in the macromolecular layer which is crosslinked. The azide derivative can be poly-m-azidostyrene, copolymers, of poly-m-aziodstyrene with styrene and copolymers of poly-m-azidostyrene with methyl methacrylate.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: September 20, 1994
    Assignee: K.K. Vayu
    Inventors: Takehisa Matsuda, Yasuhide Nakayama, Takashi Sugawara
  • Patent number: 5340727
    Abstract: Recombinant DNA expression vectors encoding a peptide which inhibits binding of von Willebrand factor to platelet membrane glycoprotein Ib, said vector including a nucleotide sequence encoding the amino acid sequence from HIS.sup.1 to LEU.sup.610, inclusive, of the amino terminal region of platelet membrane glycoprotein Ib.alpha.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: August 23, 1994
    Assignee: The Scripps Research Institute
    Inventors: Zaverio M. Ruggeri, Jerry L. Ware