Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Including surface treatment of porous body
Reexamination Certificate
2006-06-06
2006-06-06
Kim, John (Department: 1723)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Including surface treatment of porous body
C264S049000, C210S500240, C210S500270, C210S500430, C210S650000, C210S500230, C210S490000, C427S245000, C427S246000
Reexamination Certificate
active
07056458
ABSTRACT:
The invention concerns a non-thrombogenic semipermeable membrane comprising a support semipermeable membrane and an anticoagulant suitable for treating blood and plasma by extracorporeal circulation. The invention is characterized in that: the support membrane is made essentially of a polyacrylinitrile, bearing anionic groups or groups capable of being anionic; the surface of the support semipermeable membrane designed to be in contact with blood or plasma is coated successively with a cationic polymer and an anticoagulant. The invention also concern an exchanger for treating blood or plasma by extracorporeal circulation comprising two sections separated by a non-thrombogenic semipermeable, membrane and a method for making the exchanger.
REFERENCES:
patent: 4749619 (1988-06-01), Angleraud
patent: 4800016 (1989-01-01), Yang
patent: 5015226 (1991-05-01), Polaschegg
patent: 5421815 (1995-06-01), Noguchi et al.
patent: 5455040 (1995-10-01), Marchant
patent: 5632897 (1997-05-01), Mathieu
patent: 5637081 (1997-06-01), Noguchi et al.
patent: 5672638 (1997-09-01), Verhoeven et al.
patent: 5679659 (1997-10-01), Verhoeven et al.
patent: 5709993 (1998-01-01), Buturovic-Ponikvar
patent: 5718726 (1998-02-01), Amon et al.
patent: 5820917 (1998-10-01), Tuch
patent: 5840190 (1998-11-01), Scholander et al.
patent: 5885609 (1999-03-01), Amiji
patent: 6010475 (2000-01-01), Thomas et al.
patent: 6177013 (2001-01-01), Thomas et al.
patent: 42 40 681 (1994-06-01), None
patent: 42 40 681 (1994-06-01), None
patent: 0 282 091 (1988-09-01), None
patent: 0 769 503 (1997-04-01), None
patent: 0 878 491 (1998-11-01), None
patent: 0 925 826 (1999-06-01), None
patent: WO 93/05825 (1993-04-01), None
patent: WO 96/35954 (1996-11-01), None
patent: WO98/08552 (1998-03-01), None
patent: WO98/10805 (1998-03-01), None
patent: WO98/10806 (1998-03-01), None
patent: WO98/46288 (1998-10-01), None
patent: WO98/53829 (1998-12-01), None
T. Masai et al., “Experimental Evaluation of TerumoRHeparin-Coated System For Heparinless ECMO Using a Very Low Blood Flow Model”, Osaka University, Thermo Corp., Japan, 1 page, (1994), ASA10.
R.J. Caruana et al., “Anticoagulation”, Handbook of Dialysis, 2ndEdi., pp. 121-136 and 160-163.
J. Vienken et al., “Interactions of Heparin With Positively-Charged Membranes Allow Heparin-Free Dialysis”, Asaio, 12 pages, (1994).
K. Eya et al., “Total Heart-Lung Replacement With an Artificial Heart-Lung System”, ASAIO, 1 page, 1994.
K. AL-Lamee et al., “New Methods For Surface Modification and Covalent Attachment of Heparin”, Medical Device Technology, pp. 24-27, (1998).
A. Usui, et al., “Heparin Coating Extends the Durability of Oxygenators Used for Cardiopulmonary Support”, Artificial Organs, pp. 840-844, (1999).
R.H. Barth, et al., “Heparin-Free Hemodialysis With a Polyacrylonitrile Membrane”, Trans Am Soc Artif. Intern Organs, pp. 597-600, (1989).
H.W.M. Ten Hoopen et al., “Sterilization of Heparinized Cuprophan Hemodialysis Membranes”, Journal of Materials Science: Materials in Medicine, vol. 7, pp. 699-704, (1996).
G. Remuzzi, M.D., “AN69 Membrane For Hemodialysis: Long Term Effects on the Uremic Hemostatic Abnormalities”, 1stAmerican AN69 Membrane Scientific Exchange, pp. 83-89, (1982).
S.K. Mujais et al., “Heparin Free Hemodialysis Using Heparin Coated Hemophan”, ASAIO Journal, vol. 42, pp. M538-M541, (1996).
O. Larm, et al., “A New Non-Thrombogenic Surface Prepared by Selective Covalent Binding of Heparin VIA a Modified Reducing Terminal Residue”, Biomat., Med. Dev., Art. Org., vol. 11 (2&3), pp. 161-173 (1983).
C. Charbonnel et al., “A Dialyse Sans Héparine”, Session Nationale, pp. 10-11, (1994).
Dr. Ph. Morinière, Anticoagulation des Circulations Extra-Corporelles Pour Épuration Extra-Rénale, Rappels sur l'hémostase et ses tests, pp. 1-39, (1998).
G. Soula, “Le Collagène Modifié Empêche L'Adhésion des Tissus”, Industries et Techniques, No. 804, pp. 66-68, (1999).
J. Pélissié, “Héparinisation de Surface”, RMB, vol. 16, pp. 290-291, (1994).
Baxter, “The Considered Approach to Haemofiltration,” A brochure from Baxter (6 pages).
Baxter, “New Frontiers in Biocompatibility”, Baxter Healthcare Corporation, (7 pages) (1996).
W. L. J. Hinrichs, et al. “In VitroEvaluation of Heparinized Cuprophan Hemodialysis Membranes,” Journal of Biomedical Materials Research, vol. 35, pp. 443-450 (1997).
B. Urlesberger et al., Activation of the Clotting System: Heparin-Coated Versus Non Coated Systems For Extracorporeal Circulation, The International Journal of Artificial Organs, vol. 20, No. 12, pp. 708-712 (1997).
C. Ronco, et al., “Alternative Treatment Strategies for Acute Renal Failure: Continuous Arteriovenous Hemofiltration With AN69S Membrane: Procedures and Experience,” Kidney International, vol. 33, Suppl. 24, pp. S-150-S-153 (1988).
A. K. Cheung, et al., “Modulation of Complement Activation on Hemodialysis Membranes by Immobilized Heparin,” Journal of the American Society of Nephrology, vol. 2, No. 8, pp. 1328-1337 (1992).
M. Erdtmann, et al., “Photochemical Immobilization of Heparin, Dermatan Sulphate, Dextran Sulphate and Endothelial Cell Surface Heparan Sulphate onto Cellulose Membranes for the Preparation of Athrombogenic and Antithrombogenic Polymers,” Biomaterials, vol. 15, No. 13, pp. 1043-1048 (1994).
C. J. Shanley, et al., “Prolonged Extracorporeal Circulation Without Heparin: Evaluation of the Medtronic Minimax Oxygenator,” ASAIO Journal, 38, pp. M311-M316 (1992).
K. Mottaghy, et al., “Heparin-Coated Versus Non-Coated Surfaces for Extracorporeal Circulation,” The International Journal of Artificial Organs, vol. 14, No. 11, pp. 721-728 (1991).
A. Piao, et al., “Heparin Immobilization by Surface Amplification,” ASAIO Journal, pp. M638-M643 (1992).
F. Keller, et al., “Risk Factors of System Clotting in Heparin-Free Haemodialysis,” Nephrol Dial Transplant, vol. 5, pp. 802-807 (1990).
H. Sperschneider, et al., “Impact of Membrane Choice and Blood Flow Pattern on Coagulation and Heparin Requirement—Potential Consequences on Lipid Concentrations,” Nephrol Dial Transplant, vol. 12, pp. 2638-2646 (1997).
J. C. Bos, et al., “Low Polymorphonuclear Cell Degranulation During Citrate Anticoagulation: A Comparison Between Citrate and Heparin Dialysis,” Nephrol Dial Transplant, vol. 2, pp. 1387-1393 (1997).
J. E. Romāo Jr., et al. “Haemodialysis Without Anticoagulant: Haemostasis Parameters, Fibrinogen Kinetic, and Dialysis Efficiency,” Nephrol Dial Transplant, vol. 12, pp. 106-110 (1997).
F. Keller, et al., “Thromboxane B2Blood Levels and Incipient System Clotting in Heparin Free Hemodialysis,” ASAIO Journal, vol. 41, pp. 173-177 (1995).
P. M. Ambühl, et al., “Plasma Hypercoagulability in Haemodialysis Patients: Impact of Dialysis and Anticoagulation,” Nephrol Dial Transplant, vol. 12, pp. 2355-2364 (1997).
K. E. Otte, et al., “Does the Method of Heparinisation Influence the Biocompatibility of Dialysis Membranes?” Nephrol Dial Transplant, vol. 6, pp. 62-65 (1991).
R. Blezer, et al., “Activation of Blood Coagulation at Heparin-Coated Surfaces,” Journal of Biomedical Materials Research, vol. 37, pp. 108-113 (1997).
H. Miyama, et al., “Antithrombogenic Heparinized Polyacrylonitrile Copolymer ,” Journal of Biomedical Materials Research, vol. 20, pp. 895-901 (1986).
J. A. Summerton, et al., “In VitroClotting Technique for Hemodialysis Circuits,” ASAIO Journal, p. 109 (1999).
N. Gretz, et al. “Heparin Binding by Hemophan Membranes,” Dialysis Clinic, p. 128 (date unknown).
L. M. Robertson, et al., “Modification of the Blood Compatibility of Hemodialysis Memb
Crost Thierry
Renaux Jean-Louis
Thomas Michel
Hospal Industrie
Kim John
Menon Krishnan S.
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