ORGANISM-ORIGIN PROSTHTIC CARDIAC VALVE HAVING HIGH RESISTANCE TO CALCIFICATION

PROBLEM TO BE SOLVED: To allow usage for a long time and reduce its calcification by convalent-bonding in a specific manner anion hydrophilic polymer which can be shown in a specific formula to tissues selected from a group of porcine aorta valve and bovine heart sac. SOLUTION: An anion hydrophilic...

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Hauptverfasser:	BOKU KITOU, KIN EIKA, KIN KAKUCHIYUU, KAN DOUKON
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To allow usage for a long time and reduce its calcification by convalent-bonding in a specific manner anion hydrophilic polymer which can be shown in a specific formula to tissues selected from a group of porcine aorta valve and bovine heart sac. SOLUTION: An anion hydrophilic polymer which can be shown in a formula is convalent-bonded to tissues selected from a group of porcine aorta valves and bovine heart sac by way of X in the formula; X in the formula represents amino radical or aldehyde radical; R represents polyoxyethylene (ethylene oxide) radical (POE), or POE containing group, for example, -PEO-C3 H2 or -C3 H6 -CH =N-PEO-C3 H6 -; Y represents hydrogen atom or Na; R represents molecular weight of 100-20000. In this composition, the tissue material is bonded to sulphonated polyethylene oxides; thus resistance to calcination is enhanced allowing for a long-time use.