CN2350021Y - External fixator - Google Patents

Abstract

The utility model relates to an external fixing device used in a peacetime or a wartime. A clamp part of the external fixing device is composed of a rack cylinder clip, a rectangular block, and the internal block and the external block of a pair of bone needle pliers. The rack cylinder clip, the rectangular block, and the bone needle pliers have end surfaces teeth, can be adjusted in the three dimensional space, and can be engaged reliably. A rack body can be adjusted in longitudinal direction through an internal shaft, a screw rod, and an external cylinder structure, so that the distance of the bone needle can meet the requirement of a fracture position. With convenience and practicability, the external fixing device can obviously raise biologic stress.

Description

Flat war external fixator

This utility model relates to a kind of external fixator, especially a kind of flat war external fixator.

Slidingtype external fixator kind is a lot, but in actual clinical, mostly need many screws to fix, particularly be with the external fixator of " universal joint ", its holding capacity will guarantee by the frictional force that " universal joint " and circular groove compress, and makes the people be easy to generate insecurity after fixing, and, after fracture site was fixing, the distance between the spicule was not easy to adjust again.

The purpose of this utility model provides a kind of flat war external fixator, its anchor clamps can be at three-dimensional space motion, and support body can vertically adjust after fixing, makes the spicule distance satisfy the needs of fracture site, even needle gage has bigger discrepancy, do not need to beat again the spicule hole yet.

Anchor clamps of the present utility model can arbitrarily be adjusted angle, and the interior axle of support body and urceolus can vertically move to be adjusted, and makes this external fixator convenient, practical, can also improve biotic stress simultaneously, is of value to the healing of fracture site.

The purpose of this utility model is achieved in that

Flat war has two kinds with the support body of external fixator, a kind ofly is urgent rescue in wartime steel-tube construction, and the fixed position that the translation anchor clamps are clipped on the steel pipe can vertically be adjusted, and rotary clamp presss from both sides the adjustment that can realize vertical direction.Another kind is base hospital's sleeve structure, need not adjust the anchor clamps on the support body, but the threaded adjustable interior axle in the sleeve pipe of adjustment support body itself is realized.The flat war of anchor clamps is general, adopts three parts to form, and every part respectively can be in the arbitrarily angled rotation of coronalplane, frontal plane and sagittal plane, thereby realizes three-dimensional motion.

Fig. 1 is a support body frame for movement sketch map of the present utility model;

Fig. 2 is the structural representation of anchor clamps of the present utility model.

Two kinds of embodiment are described further this utility model below in conjunction with the war of accompanying drawing peace.

This utility model is made up of support body and anchor clamps.Wherein support body can divide two parts to form at ordinary times, adopts wartime a Gent kind steel pipe to get final product.Anchor clamps are general with wartime at ordinary times, are made up of three parts.

Among Fig. 1: 1-carries on the back female 2-pin

The 3-urceolus blocks up the 4-spring

5-outer movable tube 6-pin key

The interior axle of 7-8-is inner core fixedly

9-screw rod 10-is fixing female

11-fixed screw 12-location is stifled

Among Fig. 2: 13-screw 14-frame tube pincers

15-spicule 16-inside groove

17-screw 18-bolt

Piece in the outer piece 20-spicule folder of 19-spicule folder

21-end face tooth 22-right angle block

23-end face tooth

The support body movable part is made up of outer movable tube (5), interior axle (7), pin key (6), spring (4), urceolus stifled (3), pin (2), two back ofs the body female (1).Interior axle (7) diameter and urceolus internal diameter match, and the one end is for being with externally threaded axle core, and the other end has tapped screw, and interior axle (7) top has longitudinal fluting.Interior axle (7) is put in the urceolus (5), behind suitable relatively position, fixing with pin key (6).Spring (4) is enclosed within on the core, and stifled (3) the precession urceolus (5) of the urceolus of band internal and external threads withstands spring (4), and is early stage at fractures, and spring is farthest compressed.Screw on then two and carry on the back mother (1), more firm to guarantee it.

The support body standing part is made up of fixed outer cylinder (8), screw rod (9), fixing female (10), fixed screw (11), location stifled (12) and two pins.Fixed outer cylinder (8) band female thread, six thread grooves in screw rod (9) the one end band external screw threads, other end top band.All threaded inside and outside fixing female (10) and location stifled (12).Before the use, at first screw rod (9) and location stifled (12) are assembled, refill fixing female (10), then they precession urceolus (8), after urceolus (8) assembling,, fixing female (10) and urceolus (8) are fixed with fixed screw (11) with pin rivet tightly location stifled (12) and urceolus (8).Fixing effect female and that the location is stifled is that screw rod can not be moved horizontally, and can only rotate flexibly.The urceolus (8) that assembling is finished is enclosed within the end that interior axle (7) is with internal thread hole, and makes screw rod (9) precession screw with interior six wrench, and is on correct position, fixing urceolus (8) and interior axle (7) with pin.So far partly install with support body at ordinary times, only need a Gent system steel pipe as support body because the situation is critical wartime.

In the union of fracture phase, unclamp two back ofs the body female (1) and urceolus stifled (3) or only screw off pin key (6), make spring (4) that the elasticity of necessarily (measuring 1-2 millimeter or more as required) be arranged, fix again.Fracture site can have the activity of certain limit like this, and biotic stress strengthens, and is of value to the healing early of fracture site.Holder part is made up of the outer piece of piece (20) (19) in frame collet chuck (14), right angle block (22), the spicule pincers.Frame collet chuck (14) is " U " shape structure, is with interior circular hole, can pass the urceolus of support body, and holds urceolus tightly by screw (13), and the end face tooth is arranged at frame collet chuck (14) bottom.Right angle block (22) is structure at right angles, and there is end face tooth (23) the horizontal component inboard, with the end face tooth of frame collet chuck (14) bottom can be in the arbitrarily angled interlock of horizontal plane (coronalplane).Also there is end face tooth (21) in the vertical component outside.Piece (20) is cuboid in the spicule folder, there are end face tooth and end face tooth (21) interlock in the outside, the spicule outer piece of folder (19) outside is elliptic cylinder, interior piece (20) touches the position mutually with outer piece (19) groove opposite (16), form the spicule hole, after spicule (22) is put well, clamp spicule (15) by screw (17) and bolt (18), simultaneously, bolt (18) also is fixed together the outer piece of piece (20) (19) in the spicule folder with right angle block (22).The eccentric structure of spicule pincers guarantee spicule be clipped in fixing before, can be on frontal plane be that the angle that spicule presss from both sides is adjusted in the center of circle with bolt (18).The end face toothing makes anchor clamps fixing reliable, but holding capacity is strong.Spicule is clipped in frontal plane, determine and rotate by the end face tooth at coronalplane in the right angle, and the frame collet chuck rotates around the frame tube at sagittal plane, adds the collet chuck longitudinal translation on support body of putting on the shelf, makes spicule at the free arbitrarily inserting needle of space-time, has played the effect of universal joint.Even the spicule hole is beaten not ideally, also can make the effect that fixedly obtain the best of spicule, and not need to bore again the spicule hole by adjusting external fixator to fracture site.

Claims (6)

1, a kind of flat war external fixator is made up of support body and anchor clamps, it is characterized in that:

1) the support body part can be a steel pipe, also can form by movable part and standing part, the support body movable part is stifled 3 by outer movable tube 5, interior axle 7, pin key 6, spring 4, urceolus, pin 2, two back ofs the body female 1 are formed, interior axle 7 is put in the urceolus 5, behind suitable relatively position, fixing with pin key 6; The support body standing part is made up of fixed outer cylinder 8, screw rod 9, fixing mother 10, fixed screw 11, stifled 12 and two pins in location, stifled 12 assemblings in screw rod 9 and location, refill fixing mother 10, precession urceolus 8 is with urceolus 8 assemblings, with pin rivet tightly location stifled 12 and urceolus 8, make fixing mother 10 fixing with urceolus 8 with fixed screw 11, axle 7 is with an end of internal thread holes in being enclosed within, and makes the inner bolt hole of axle in screw rod 9 precessions with interior six wrench, on correct position, fixing urceolus 8 and interior axle 7 with pin;

2) holder part is made up of piece 20 outer pieces 19 in frame collet chuck 14, right angle block 22, the spicule pincers, the urceolus of support body penetrates frame collet chuck 14, fixing with screw 13, in the arbitrarily angled interlock of coronalplane, the end face tooth 21 of piece 20 outside end face teeth and right angle block is in the arbitrarily angled interlock of frontal plane in the spicule folder by the end face tooth for frame collet chuck 14 and right angle block 22.

2, according to the described flat war external fixator of claim 1, it is characterized in that: interior axle 7 diameters and urceolus internal diameter match, and the one end is for being with externally threaded axle core, and the other end has tapped screw, and interior axle 7 tops have longitudinal fluting.

3, according to the described flat war external fixator of claim 1, it is characterized in that: spring 4 is enclosed within on the axle core of fixing and urceolus, and the stifled 3 precession urceolus 5 of the urceolus of band internal and external threads withstand spring 4, screw on then two and carry on the back female 1.

4, according to the described flat war external fixator of claim 1, it is characterized in that: fixed outer cylinder 8 band female threads, screw rod 9 one end band external screw threads, the other end is interior six thread grooves, and is all threaded inside and outside fixing mother 10 and the location stifled 12.

5, according to the described flat war external fixator of claim 1, it is characterized in that: frame collet chuck 14 is " U " shape structure, right angle block 22 rectangular structures, and the spicule pincers are eccentric structure.

6, according to the described flat war external fixator of claim 1, it is characterized in that: piece 20 touches the position mutually with outer piece 19 in the spicule folder corresponding groove, form the spicule hole, clamp spicule 15 by fixed screw 17 and fixed screw 18, fixed screw 18 also is fixed together piece 20, outer piece 19 in the spicule folder with right angle block 22 simultaneously.