DEVICE FOR TISSUE REMOVAL

A medical device includes a rim, at least one wire, and a sheath; the rim defines an annulus in a plane and defines a width measured perpendicular to the plane; and at least one wire coupled to a distal end of the rim and extending proximally from the distal end out of the plane to a proximal end of the rim, the at least one wire having a cross-sectional dimension measured perpendicular to a longitudinal axis of the at least one wire, the size of the cross section is smaller than the width of the edge; the sheath is configured to cover at least a portion of the rim and a portion of the at least one wire. 一种医疗装置包括边沿、至少一个线材和护套；所述边沿在平面中限定了环状物并且限定了垂直于所述平面所测量的宽度；所述至少一个线材联接至所述边沿的远侧端部并且从所述远侧端部朝近侧延伸出所述平面至所述边沿的近侧端部，所述至少一个线材具有垂直于所述至少一个线材的纵向轴线所测量的横截面尺寸，所述横截面尺寸小于所述边沿的所述宽度；所述护套配置成至少覆盖所述边沿的一部分和所述至少一个线材的一部分。