摘要:
The object of the present invention is to provide a sliding member, a prosthesis and a method of producing the sliding member, which can suppress production of abrasive wear debris by suppressing friction of the sliding section, and also can maintain satisfactory mechanical characteristics in vivo. A sliding member comprising: a substrate 1 capable of forming hydroxyl groups; and a biocompatible material layer 4 laminated on appropriate sections of the substrate 1, wherein hydroxyl groups are formed on at least a required section of a surface of the substrate 1 by surface treating to form a surface-treated layer 2, while the biocompatible material layer 4 is formed from a polymer containing phosphorylcholine groups, and wherein the substrate 1 and the biocompatible material layer 4 are joined via a binder layer 3 formed from silica being covalently bonded with the hydroxyl groups and the biocompatible material, respectively.
摘要:
Disclosed is a sliding member with excellent durability and capable of maintaining wear resistance over a long period of time. Further disclosed is an artificial joint member for which the film thickness of the polymer base material is reduced. Further disclosed is an artificial joint which is capable of demonstrating high lubricity, biocompatibility, and resistance to dislocation after introduction into the body. Further disclosed are a medical appliance material and a medical appliance which demonstrate excellent biocompatibility. The sliding material or the medical appliance material is formed by a polymer layer or a biocompatible material layer (B) being provided by coating at least a portion of the surface of a polymer base material (A), the surface of which has a ketone group, and the polymer layer or biocompatible layer (B) is characterized by being formed by surface graft polymerization, wherein the polymer base material (A) is immersed in a reaction system which contains a monomer (C), the polymer base material (A) is exposed to light, and polymerization of the monomer is initiated from the surface of the polymer base material (A). Using the sliding material or medical appliance material, an artificial joint member, an artificial joint, a medical appliance material, and a medical appliance are manufactured.
摘要:
Disclosed is a graft polymerization method which has solved problems involved in use of a solvent, a radical initiator and high-energy radiation when a monomer is graft-polymerized on the surface of a polymer base. The graft polymerization method is characterized in that a polymerization product is obtained by immersing a polymer base (i) having a ketone group on the surface into a reaction system containing a monomer (ii) and then irradiating the polymer base (i) with light so that polymerization of the monomer starts from the surface of the polymer base (i).
摘要:
An artificial joint member made of a polymeric material including a portion made of a polymeric substance has a sliding surface composed of a polymer having phosphoryl choline groups. With such an arrangement, the artificial joint member is provided with a sliding part capable of keeping a satisfactory lubricating state for a long time.
摘要:
The present invention is affinity particles that are characterized by having phosphorylcholine groups represented by the following formula (1) covalently bonded onto the surface of inorganic powder and also by having ligands having specific affinity with a certain target substance covalently bonded or adsorbed onto the surface of inorganic powder.The object of the present invention is to provide an affinity separation method that uses affinity particles utilizing inexpensive inorganic particles and is capable of separating the target substance easily and with high accuracy.
摘要:
An object of the present invention is to provide an immunoassay of PSA using an agglutination accelerator, which has an agglutination accelerating effect equal to or stronger than the known agglutination accelerator; hardly generates non-specific turbidity; and hardly generates salting out even in a solution with a high salt concentration. The present invention relates to an immunoassay of a prostate-specific antigen comprising performing an antigen-antibody reaction in the presence of a polymer having a monomer unit derived from a monomer represented by the following general formula [2]: (wherein R1-R3 are each independently a hydrogen atom or an alkyl group optionally having a hydroxyl group; R4 is an alkylene group; R5 is an alkylene group optionally having a substituent and optionally having an oxygen atom in a chain; R6 is a hydrogen atom or a methyl group, and X is an oxygen atom or a —NH— group), and a kit of reagent for an immunoassay comprising a reagent containing an agglutination accelerator for the immunoassay.
摘要翻译:本发明的目的是提供使用凝集促进剂的PSA的免疫测定法,凝集促进剂的凝集促进效果等于或大于已知的凝集促进剂; 几乎不产生非特异性浊度; 即使在盐浓度高的溶液中也难以产生盐析。 本发明涉及前列腺特异性抗原的免疫测定法,包括在具有来源于下述通式[2]表示的单体的单体单元的聚合物存在下进行抗原抗体反应:(其中R < 1〜3个O 3各自独立地为氢原子或任选具有羟基的烷基; R 4为亚烷基; R 5为 任选具有取代基且任选在链中具有氧原子的亚烷基; R 6是氢原子或甲基,X是氧原子或-NH - 组)和用于免疫测定的试剂盒,其包含含有用于免疫测定的凝集促进剂的试剂。
摘要:
A method for discharging a liquid containing a biological material includes adding as a dispense stabilizer a polymer composed of phosphorylcholine-group-containing unsaturated compound units or a copolymer including same to the liquid containing the biological material; and discharging the liquid containing the dispense stabilizer using an inkjet system.
摘要:
An agent for fixing (a) substance(s), which can fix various substances to be fixed on a substrate via covalent bonds and which has an excellent effect for the prevention of non-specific adsorption is disclosed. A polymer containing a plurality of phosphorylcholine groups and photoreactive groups in one molecule is used. The polymer binds to the substrate and to the substance to be fixed via the photoreactive groups, thereby the substance to be fixed is bound to the substrate via covalent bonds through the polymer, and non-specific adsorption is effectively prevented by the phosphorylcholine groups. Further, an agent for fixing (a) substance(s) for fixing the substance on a substrate, comprising a nonionic water-soluble macromolecule having at least 2 photoreactive groups in one molecule was also provided.
摘要:
Solubilizers, emulsifiers and dispersing agents having the effects of moisturizing the skin when used as washing agents and having the character of elevating the concentration of a material to be solubilized, emulsified or dispersed in solvents including water as compared with the case where the material is employed alone, or elevating the apparent concentration of a material to be emulsified or dispersed in solvents by increasing homogeneity of the emulsion or dispersion which contain as the active ingredient polymers obtained by polymerizing monomer compositions containing at least one hydrophilic monomer (a) having a group represented by general formula (1) in the side chain, wherein R1, R2 and R3 represent each H or C1-4 alkyl.
摘要:
A method of producing a material bearing zwitterionic groups, such as phosphoryl choline groups, which comprises treating at least the surface of a substrate with a solution or dispersion of a polymer grafter with zwitterionic groups, and material produced by the method. The method is suitable for producing materials for use in contact with blood and in particular a regenerated cellulose membrane.