| 摘要 |
PCT No. PCT/RU97/00199 Sec. 371 Date Jan. 8, 1999 Sec. 102(e) Date Jan. 8, 1999 PCT Filed Jun. 27, 1997 PCT Pub. No. WO98/01086 PCT Pub. Date Jan. 15, 1998The present invention relates to medicine, more specifically to microsurgery and can find application both for dilating stenosed portions of tubular organs and blood vessels and for fixing the edges of holes in tissues or holding prostheses, e.g., when positioning occluding, valve, or filtering prosthetic appliances on parietal lesions or defects, as well as on inosculations of hollow or tubular organs. The invention makes possible extending the field of application and functional capabilities of the microsurgical fixing device, as well as to enhance its reliability and safety of its positioning. According to one of its embodiments the microsurgical fixing device appears as at least two springs each appearing as a cone frustum or a flat ring made from a Z-shaped bar that forms a closed loop. The springs are movably interconnected through the apices of zigzags which are situated on the same circle so as to provide reversible compression of the springs under the effect of external load. In an alternative embodiment of the invention the microsurgical fixing device comprises a single spring appearing as a cone frustum or a flat ring made from a Z-shaped bar forming a closed loop. The zigzag apices lying on the same circle are provided with retainers movably connected thereto, each appearing as an elastic bar provided with a hook. The manipulation pusher appears as a number of tie-members provided with slideways connected, through a coupling, to a guide-catheter. The tie-members are accommodated in the coupling and the guide-catheter longitudinally movably thereinside and with respect to the slideways. |
