The utility model provides a centrum expansion balloon catheter. The centrum expansion balloon catheter comprises a balloon assembly, a sheath, a handle assembly and a supporting wire assembly in the axial direction in sequence. The balloon assembly comprises a double-cavity tube, developing marks, a supporting wire and a balloon, wherein the developing marks are arranged in the double-cavity tube, one end of the supporting wire is located in the double-cavity tube, and the other end of the supporting wire and a supporting nut form the supporting wire assembly, one end, connected with the supporting nut in a threaded mode, of the supporting wire is flat,

The utility model relates to a biaxially double-lumen balloon catheter comprising an outer tube, core tube, a balloon and a handle assembly, one end of the handle assembly of the outer tube connecting the other end of the outer tube and the proximal end of the balloon sealed connection ; core tube penetrates the outer tube, one end of the core tube connecting the handle assembly is connected, the other end of the core tube extending outer tube, and the distal end of the outer wall of the core tube and balloon sealingly connected; outer tube for connecting the proximal end of the balloon an end to the distal end of the balloon extending forwardly

The utility model provides a developer with automatic positioning function preload ring grip machine, comprising a base, PLC controllers, pressure grip mechanism and advancing mechanism, the advancing mechanism includes rails, sliders, fixtures, motors and ball screws Vice bars, the slide is fixed on said base, said slider fixture fixedly connected to said top, bottom rails connected to the slide, the ball screw comprises a screw and a nut screwed the screw at one end and the motor output shaft fixing this with automatic

The utility model provides a vertebral body dilating saccule catheter. The vertebral body dilating saccule catheter comprises a saccule component, a protective sleeve, a handle component and a support wire component in the axial direction, wherein the saccule component comprises dual-cavity tubes, developing marks, a support wire, a saccule, a protective sleeve, and a spacing interface, wherein the developing marks are arranged in the