CN2060066U

CN2060066U - Moving ring fixed club for backbone

Info

Publication number: CN2060066U
Application number: CN 90200221
Authority: CN
Inventors: 汪键; 杨中和; 马兆钦
Original assignee: First Peoples Hospital of Qujing
Current assignee: First Peoples Hospital of Qujing
Priority date: 1990-01-04
Filing date: 1990-01-04
Publication date: 1990-08-08

Abstract

The utility model relates to a vertebral-column fixing rod with a movable ring, used for the postoperative internal-fixation of the fractured vertebral-column. The utility model is characterized in that a U-shaped rod whose ends are provided with screw-threads, a movable supporting block and screw nuts compose an adjustable ring-shaped mechanism whose bending rod is easy to be operated and is convenient for placing and bundling. By regulating the screw nuts and the movable supporting block, a lengthwise supporting force on the vertebral-column is generated. The rod body and the vertebral-column are fixed with each other by a surface-contacting mode. The utility model has a good effect of reposition and fixation.

Description

Moving ring fixed club for backbone

A kind of ansa post hold-down bars alive is used for the postoperative internal fixation of spinal fracture.

At present, the apparatus that is usually used in internal fixation of spine both at home and abroad, as the Lu Geshi hold-down bars etc., existing in various degree all in clinical practice: the barred body of put inconvenient, the curved rod difficulty of rod, putting upset and wholely lack longitudinal holding power and make the shortcoming of fixation difference easily.And after the barred body upset, just might prick skin.

The purpose of this utility model just is to overcome the deficiency of existing internal fixation of spine apparatus, provides a kind of curved rod easy, puts rod and ties up convenience, can not overturn, vertically have support force, the ansa post hold-down bars alive of reduction good fixing effect.

Solution of the present utility model is to be threaded and parallel U type barred body, movable supporting blocking and nut constitutes adjustable annular mechanism by port.

U type barred body is that the medical stainless steel wire rod with φ 7mm bends and forms, and the length of barred body is 200-250mm, and wide is 20mm, and the length of screw thread is 50mm on the opening.

This utility model is bent the clubs work easily, puts rod and ties up convenience, and spinal column is had longitudinal holding power, and barred body becomes face to contact fixing with spinal column and do not have the possibility that barred body overturns, and the reduction fixation is better.

Fig. 1 is the structural representation of the ansa post hold-down bars of living.

Fig. 2 is the sketch map of ansa post hold-down bars in the spinal fracture operation is fixing of living.

In conjunction with the accompanying drawings 1, an embodiment of the present utility model makes long 250mm with the medical stainless steel wire rod of φ 7mm, wide 20mm, opening respectively have the U type barred body (3) of the long screw thread of 50mm (4), more supporting with it movable supporting blocking (1) and the two pieces of nuts (2) of system.In conjunction with the accompanying drawings 2, using method of the present utility model is as follows: spinal column reduction decompression is finished, spinal segments in damage cuts interspinal ligaments in each 1-2 vertebral body spinous process gap up and down, chew pincers at last the next spinous process root with eagle and sting an incisura, according to spinal column physiological bending and operation needs, two barred bodies of ansa post hold-down bars (3) of will living curve suitable radian, turn nut (2), make the shift length of movable supporting blocking (1) on U type barred body (3) and the same length of spinal column segment that is fixed, part screw rod on the unnecessary length barred body cuts off, the interspinal ligaments otch places in the spinous process root incisura about will propping up the spacer warp again, press the Lug's stick operation method with vertebra piece following steel wire or transverse process steel wire lashing barred body, repair the interspinal ligaments that cuts with steel wire or cordonnet.Clockwise direction replaces the turn nut, and movable supporting blocking makes the ring of living, and fixedly barred body is to the suitable longitudinal holding power of spinal column generation at nut effect bottom offset, and postoperative internal fixation is promptly accused and finished.

Claims

1, a kind of ansa post hold-down bars alive that is used for internal fixation of spine is characterized in that by being threaded (4) and parallel U type barred body (3), movable supporting blocking (1) and nut (2) formation.

2,, it is characterized in that (length of (3) is 200-250mm to U type barred body, and wide is 20mm, and opening respectively has the long screw thread (4) of 50mm according to claim 1 said ansa post hold-down bars alive.

3,, it is characterized in that U type barred body (3) made by the medical stainless steel wire rod of φ 7mm according to claim 1 or 2 said ansa post hold-down bars alive.