CN2507412Y

CN2507412Y - Semicircular slot external fixator

Info

Publication number: CN2507412Y
Application number: CN 01256565
Authority: CN
Inventors: 李起鸿
Original assignee: SOUTHWEST HOSPITAL OF CHONGQING
Current assignee: SOUTHWEST HOSPITAL OF CHONGQING
Priority date: 2001-11-12
Filing date: 2001-11-12
Publication date: 2002-08-28
Anticipated expiration: 2011-11-12

Abstract

The utility model relates to an external skeletal fixation device which is either used for treating bone fracture to reset and fix the end of the fracture, or prolonging bodies, in particular to a semi-cyclic groove fixation device. The utility model comprises bolts (1), a female screw and a bale (2), draw point fixation folders (5), which is characterized in that the device is provided with 2-4 semi-cyclic groove steady bows (3), two sections of bow grooves (6) are opened on the semi-cyclic groove steady bows (3), the draw point fixation folders (5) which can be moved along the bow grooves (6) or fixed in the bow grooves (6), bow groove gaps are equipped on the middle portion and the both ends of the semi-cyclic groove steady bows (3), and the bolts (1) is connected with the semi-cyclic groove steady bows through the female screw and the bale (2) passing the bow groove gaps (7). The utility model has the advantages of favorable stability, simple structure, small and light size, easy operation and convenient employment, which can be extensively used for resetting and fixing the end of the fracture, and prolonging bodies.

Description

Half-ring fixator

Technical field

This utility model relates to a kind of fracture of can treating resets with fixing bone stump, can use the bone external fixation device of what limb lengthening again, particularly a kind of half-ring fixator.

Background technology

The bone external fixation is a kind of method of treatment fracture, and it is meant to wear with heart bone section percutaneous far away at the nearly heart of fracture puts draw point or steel nail, and metal that reuse is hard or plastics connecting rod are joined to one another exposing at extracutaneous pin end with steel clip, with fixing fracture end.Fixedly this special device of fracture end is called bone external fixator or external fixer.The external fixator that adopts has monoplane half pin fixed pattern, the full pin fixed pattern in monoplane and many planes fixed pattern at present.The external fixator of monoplane half pin fixed pattern is to rely on the jaw type hold of half pin to keep the fixing of bone stump, the stressed of bone stump is unsymmetry (eccentric force), anti-rotation is the poorest to the curved power of bending with front and back, and draw point can deform or rupture, and dislocation more easily takes place fracture end.The external fixator of the full pin fixed pattern in monoplane is that draw point is run through bone and offside soft tissue, the stressed symmetry that is of bone stump, but still poor before and after anti-to the ability of curved power in the wrong and torsion, when being used for the limbs drawbar extension, epiphysis rotation and angulation deformity can take place.It is fixing that many planes full-annular type external fixator can provide polytropism to thread a needle, good stable is arranged, and spininess is fixedly the time, and every pair of pin intersects relatively and has a certain degree, constituting many planes fixes, but it is bulky, and structure is complicated, heavy, and stabilizing ring will pass limbs one by one during use, screw rod will pass the fixing hole on every stabilizing ring one by one, troublesome poeration, moving of draw point fixation clamp is also inconvenient, takes out that to put into another hole more fixing must the hole from stabilizing ring.

Summary of the invention

The purpose of this utility model is to design a kind of good stability, and is simple in structure, and volume is little, light, and is simple to operate, half-ring fixator easy to use.

The purpose of this utility model is to realize like this, half-ring fixator, include screw rod, nut and packing ring, draw point fixation clamp, be characterized in being provided with the stable bow of 2-4 semi-ring slot type, have two sections bow grooves on the stable bow of semi-ring slot type, setting can be along the mobile or fixed draw point fixation clamp of bow groove in the bow groove, and the middle part of the stable bow of semi-ring slot type and two ends have bow groove breach, and screw rod is connected with the stable bow of packing ring and half circle groove by nut through bow groove breach.

Because this utility model offers bow groove and bow groove breach on the stable bow of semi-ring slot type, during use if screw rod along breach put into nut and packing ring fixing get final product will stablize to bend fix, three bow groove breach are put into three screw rods and promptly external fixator are positioned to cover in and need fixed fractures, wear draw point fixedly the time, as long as mobile draw point fixation clamp on the bow groove of stable bow, just can choose at random thread a needle position and angle, as long as the nut that tightens again on the draw point fixation clamp has just been fixed the draw point position, so this utility model good stability, simple in structure, volume is little, light, simple to operate, easy to use.Can be widely used in bone stump resets and the fixing drawbar extension that reaches limbs.

Description of drawings

This utility model has following accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sketch map of the stable bow of semi-ring slot type of the present utility model;

Fig. 3 is the sketch map of draw point fixation clamp of the present utility model;

Among the figure: the stable bow of 1-screw rod 2-nut and packing ring 3-semi-ring slot type 4-draw point 5-draw point fixation clamp 6-bow groove 7-bow groove breach

The specific embodiment

Embodiment of the present utility model is described with reference to the accompanying drawings.A kind of half-ring fixator, as Fig. 1, Fig. 2, shown in Figure 3, include screw rod 1, nut and packing ring 2, draw point fixation clamp 5, be provided with the stable bow 3 of two semi-ring slot types, have two sections bow grooves 6 on the stable bow 3 of semi-ring slot type, setting can be along bow groove 6 mobile or fixed draw point fixation clamps 5 in the bow groove 6, and the middle part of the stable bow 3 of semi-ring slot type and two ends have bow groove breach 7, and screw rod 1 is connected with the stable bow 3 of packing ring 2 and half circle groove by nut through bow groove breach 7.Fixing by the draw point fixation clamp 5 on the stable bow 3 of semi-ring slot type during use to the fixed draw point 4 of bone stump.

Claims

1. half-ring fixator, include screw rod (1), nut and packing ring (2), draw point fixation clamp (5), it is characterized in that being provided with the stable bow of 2-4 semi-ring slot type (3), have two sections bow grooves (6) on the stable bow of semi-ring slot type (3), the interior setting of bow groove (6) can be along bow groove (6) mobile or fixed draw point fixation clamps (5), the middle part of the stable bow of semi-ring slot type (3) and two ends have bow groove breach (7), and screw rod (1) is connected with the stable bow of half circle groove (3) with packing ring (2) by nut through bow groove breach (7).