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US 2023/0047677 A1Published application
Manufacturing method of sliding member for artificial joint, sliding member for artificial joint, and artificial joint
AssigneeKYOCERA Corporation
InventorsShihori YAMANE, Masayuki KYOMOTO, Aya NOGUCHI, Takako MASHIKO
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Abstract
A manufacturing method of a sliding member for an artificial joint according to the present disclosure includes exposing a base member with ultraviolet rays in a state where the base member is in contact with an aqueous treatment solution containing a compound having 0.20 mol/L or more and less than 0.50 mol/L of phosphorylcholine group and a water-soluble inorganic salt.
Claims21
A method for manufacturing a sliding member for an artificial joint, comprising
- exposing a base member to ultraviolet rays, the base member contacted with an aqueous treatment solution, the aqueous treatment solution comprising a compound and a water-soluble inorganic salt, the compound having phosphorylcholine group, a molar concentration of the compound is 0.20 mol/L or more and less than 0.50 mol/L.
A sliding member for an artificial joint, comprising:
- a base member comprising a compound having a methylene group;
- and
- a polymer film that is formed on at least a portion of a surface of the base member and comprises a polymer chain in which a compound having a phosphorylcholine group is polymerized, wherein
- the following formula (1) is satisfied:
- (peak intensity of phosphoric acid group/peak intensity of methylene group in infrared spectral analysis spectrum)/film thickness of polymer film≥0.007 nm−1 (1).
2 more elements
A sliding member for an artificial joint, comprising:
- a base member comprising a compound having a benzene ring;
- and
- a polymer film that is formed on at least a portion of a surface of the base member and comprises a polymer chain in which a compound having an ester group and a phosphorylcholine group is polymerized, wherein
- the following formula (2) is satisfied:
- (peak intensity of ester group/peak intensity of benzene ring in infrared spectral analysis spectrum)/film thickness of polymer film≥0.0005 nm−1 (2).
2 more elements
(canceled)
Dependencies are inferred from the claim text.