MEDICAL DEVICE AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:US20220168475A1

    公开(公告)日:2022-06-02

    申请号:US17675343

    申请日:2022-02-18

    摘要: A medical device that exhibits an excellent lubricating property includes: a substrate layer; and a surface lubricious layer formed on at least a part of the substrate layer, and containing a hydroxy group-containing compound selected from a group consisting of a non-volatile alcohol, a partially esterified product thereof, and a partially etherified product thereof, and soluble in water, and a hydrophilic copolymer containing a structural unit derived from a polymerizable monomer (A) having a sulfobetaine structure, a structural unit derived from a polymerizable monomer (B) having at least one group selected from a group consisting of a sulfonic acid group (—SO3H), a sulfuric acid group (—OSO3H), a sulfurous acid group (—OSO2H), and salt groups thereof, and a structural unit derived from a polymerizable monomer (C) having a photoreactive group.

    ABSORBABLE STENT
    32.
    发明申请

    公开(公告)号:US20220142795A1

    公开(公告)日:2022-05-12

    申请号:US17580928

    申请日:2022-01-21

    摘要: An absorbable stent includes an absorbable matrix. The matrix includes a number of wave-shaped rings connected by connection units and arranged in an axial direction. The wave-shaped ring includes a number of waves arranged in a circumferential direction. A peak, a valley and a support connecting the peak and the valley form the wave. Two adjacent wave-shaped rings and the connection unit form a closed side supporting unit. The matrix has a volume of 4 μm to 40 μm per unit blood vessel area. The absorbable stent has sufficient radial supporting strength of no less than 55 kPa for clinical applications. Moreover, the volume of the matrix per unit blood vessel area is less than volumes of existing stents. When the absorbable stent and existing stents are made of the same material, the absorbable stent has a shorter degradation and absorption cycle.