CN2776315Y - Independent inlay type external bone fixator - Google Patents

Abstract

The utility model relates to an independent inlay type external bone fixer which is composed of two pairs of regulating arms with identical structures and six connecting transverse rods, wherein each pair of regulating arms is respectively composed of a pressing block, a left and a right screw rods, six supporting posts, six tightening screws, six supporting feet fixing screws and six transverse rod fixing screws; when used, the utility model is connected with the fracture end of a long bone of a human body by the connecting transverse rods of the utility model, so that a stable, telescopic and adjustable plane steady structure is formed, and functions of the fixation of bone restoration and the extension and the shrinking pressurization of bones can be realized. The utility model has the advantages of high safety, pinhole quantity reduction, the small probability of infected occurrence, pinhole scar decrease, simultaneously, the risk degree decrease of the latent lesion for blood vessels and nerves, the big adjustable range of the compression or the prolongation of the fracture end, high independence and flexibility, big effective application range, the difficult occurrence of the angulation and the side deformity of the fracture end, high operation success ratio, simple structure, small volume, easy operation, convenient carrying and kindly acceptance by patients.

Description

Independent inserted bone external fixator

Technical field

This utility model relates to the apparatus that the human body long bone is carried out Surgery Treatment, specifically, relates to a kind of inserted bone external fixator of independence that human body external fixation long bone is vertically pressurizeed and prolongs.

Background technology

The development of bone external fixator and the history of using existing more than 100 year are mainly used in treatment, severe open fracture fixing of not isometric odd-shaped orthopedic, the bone does not connect of human limb long bone and the beauty treatment heighten operation that year rises recently etc.The version of bone external fixator mainly contains loopful formula bone external fixator, profix bone external fixator at present abroad.Domestic half-ring fixator, the hook slot type bone external fixator of mainly containing.The common drawback of these bone external fixators is: adopt many planes spininess to fix, increased and infected the probability that takes place, and spininess hole cicatrix influences the beauty treatment of limbs; The risk height of latent lesion blood vessel, nerve; Compression is little with the scalable amplitude that prolongs, and makes indication limit to relatively; Fracture end easily becomes angle and side deformity, and mortality is higher relatively; Complex structure, operation easier is big, needs specialized skills; Volume is bigger, carries inconvenience, and patient is glad to be accepted etc.

Summary of the invention

Not high, the effective adaptability of security reliability that existing bone external fixator exists is bad, structure is complicated, operate and carry inconvenient problem in order to solve, the purpose of this utility model is that a kind of security reliability height, effective adaptability good, simple in structure and operation and the inserted bone external fixator of independence easy to carry are provided.

Solution of the present utility model is as follows.It is connected cross bar and constitutes with 6 that this two secondary regulating arm is coupled together by the identical regulating arm of two auxiliary structures, wherein the structure of each secondary regulating arm is: the pressing plate with a strip, pressing plate offers the skidway hole of strip respectively to two ends from the middle part, also has a left and right sides screw mandrel that is elongated rod shape that parallels with pressing plate, the middle part of left and right sides screw mandrel offers radial rotation application of force patchhole, be processed with the opposite screw thread of hand of spiral from the middle part of left and right sides screw mandrel respectively to two ends, left side at left and right sides screw mandrel, on right two sections threaded portions respectively rotation set offer suitable threaded interior hole and with 3 mutually perpendicular pillars of left and right sides screw mandrel, in two skidway holes of pressing plate, be equipped with 3 stretching screws that are crimped on nose end respectively, these two groups an end of totally 6 stretching screws all offer radial rotation application of force patchhole, their other ends then are screwed in respectively in two groups of the left and right sides screw mandrels screw that 6 pillar one ends are offered totally, thereby with two groups totally 6 pillars link together together with left and right sides screw mandrel and pressing plate tension, these two groups the other end of totally 6 pillars be connected with a co-axial short cylinder leg respectively, these two groups an end of totally 6 legs offer axial pillar patchhole respectively, and also offer the radial screw fixed hole that is connected respectively with these 6 pillar patchholes, be connected with the leg hold-down screw respectively in totally 6 screw fixed holes at these two groups, the other end of these 6 pillars is made respectively in the pillar patchhole that thinner bar portion is plugged on 6 leg one ends, fixing tight with 6 corresponding leg hold-down screws respectively again, thereby an end of 6 legs removably is fixed on respectively on 6 pillars, the other end at 6 legs offers axial screw fixed hole respectively, and also offer the radial cross bar patchhole that is connected with these 6 screw fixed holes respectively, in these 6 screw fixed holes, be connected with the cross bar hold-down screw respectively; In the cross bar patchhole of 6 leg opposite positions of two secondary regulating arms, be inserted with same connection cross bar respectively, and with corresponding cross bar hold-down screw that these 6 connection cross bars are fixing respectively tight, all be processed with screw thread in an end of every connection cross bar.

This utility model with said structure, its two secondary regulating arm fuses by 6 connection cross bars on the leg, the common plane stability structure of forming a very firm and scalable adjusting, one of its function be can reset fixing, promptly be to hold with the human fracture by its connection cross bar in use to link to each other, the plane stability of this structure has restricted fracture end the front and back displacement has taken place, angulation deformity and rotation displacement, the threaded portion and the bone photo that connect cross bar connect, the gripping effect that it produced can limit fracture end inside and outside displacement and angulation deformity take place, and keeps resetting with effectively fixing of fracture end; Two of its function is to prolong and pressurization, because it connects by connecting cross bar and bone photo, again can be by the left and right sides screw mandrel application of force on the two secondary regulating arms is rotated adjusting, thereby produce flexible strength, make the pillar on the left and right sides screw mandrel of two secondary regulating arms produce left and right displacement along the strip skidway hole on the pressing plate by the stretching screw after unclamping, again by leg that links to each other with pillar and the cross bar that is connected that links to each other with leg, contractility is transmitted to fracture end, make fracture end produce telescopic displacement, thereby realize that bone prolongs and the contraction pressurization.

The beneficial effects of the utility model are, because two secondary regulating arms are by connecting the plane stability structure that cross bar connects into a very firm and scalable adjusting, so its security reliability height, complication is few, mainly reduced pin hole quantity, made the probability that takes place to infect greatly descend, the pin hole cicatrix reduces simultaneously, influence also reduces thereupon to beauty treatment of limbs, and blood vessel and neural latent lesion risk are reduced; 6 legs of every secondary regulating arm independently are embedded in the strip skidway hole of pressing plate by pillar and stretching screw respectively, make to connect that cross bar compresses fracture end or the scalable amplitude that prolongs is big, independent motility height, and effective subject range is big; Fracture end is difficult for into angle and side deformity, and success rate of operation is higher; Structure is comparatively simple, and easy operating uses; Volume is less and be easy to carry, and patient takes like a shot.

Description of drawings

Fig. 1 is the front view of a kind of concrete structure embodiment of this utility model;

Fig. 2 has the A of broken section to view for single one secondary regulating arm in Fig. 1 this utility model.

The specific embodiment

Referring to Fig. 1 and Fig. 2.This utility model embodiment is connected cross bar 8 and constitutes with 6 that this two secondary regulating arm is coupled together by the identical regulating arm of two auxiliary structures, wherein the structure of each secondary regulating arm is: the pressing plate 1 with a strip, pressing plate 1 offers the skidway hole 11 and 12 of strip respectively to two ends from the middle part, also has a left and right sides screw mandrel 2 that is elongated rod shape that parallels with pressing plate 1, the middle part of left and right sides screw mandrel 2 offers two mutually perpendicular rotation spin patchholes 21 and 22 radially, be processed with the opposite screw thread of hand of spiral 23 and 24 from the middle part of left and right sides screw mandrel 2 respectively to two ends, left side at left and right sides screw mandrel 2, on right two sections threaded portions 23 and 24 respectively rotation set offer suitable threaded interior hole and with 3 perpendicular pillars 4 of screw mandrel 2, in two skidway holes 11 and 12 of pressing plate 1, be equipped with 3 stretching screws 3 that are crimped on nose end respectively, these two groups an end of totally 6 stretching screws 3 offer radial rotation application of force patchhole 31, their other ends then are screwed in respectively on the left and right sides screw mandrel 2 in two groups of screws that 6 pillar 4 one ends are offered totally, thereby with two groups totally 6 pillars 4 link together together with left and right sides screw mandrel 2 and pressing plate 1 tension, these two groups the other end of totally 6 pillars 4 be connected with a co-axial short cylinder leg 5 respectively, these two groups an end of totally 6 legs 5 offer axial pillar patchhole 51 respectively, and also offer the radial screw fixed hole 52 that is connected respectively with these 6 pillar patchholes 51, be connected with leg hold-down screw 6 respectively in totally 6 screw fixed holes 52 at these two groups, the other end of these 6 pillars 4 is made thinner I-shaped bar portion respectively and is plugged in the pillar patchhole 51 of 6 leg 5 one ends, fix tight with 6 corresponding leg hold-down screws 6 respectively again, thereby an end of these 6 legs 5 removably is fixed on respectively on 6 pillars 4, end at 6 legs 5 offers axial screw fixed hole 53 respectively, and also offer the radial cross bar patchhole 54 that is connected with these 6 screw fixed holes 53 respectively, in these 6 screw fixed holes 53, be connected with cross bar hold-down screw 7 respectively; In the cross bar patchhole 54 of 6 leg 5 opposite positions of two secondary regulating arms, be inserted with same connection cross bar 8 respectively, and with corresponding cross bar hold-down screw 7 that these 6 connection cross bars 8 are fixing respectively tight, all be processed with screw thread 81 in an end of every connection cross bar.

In Fig. 1 and Fig. 2, all members all can adopt medical material 1Cr8Ni9Ti to make.Connect cross bar 8 and be advisable with long 7～10cm, Φ 4.5～5mm, the length of its threaded portion 81 is advisable with 3～4cm.

Claims (2)

1, the inserted bone external fixator of a kind of independence, it is characterized in that: it is connected cross bar and constitutes with 6 that this two secondary regulating arm is coupled together by the identical regulating arm of two auxiliary structures, wherein the structure of each secondary regulating arm is: the pressing plate with a strip, pressing plate offers the skidway hole of strip respectively to two ends from the middle part, also has a left and right sides screw mandrel that is elongated rod shape that parallels with pressing plate, the middle part of left and right sides screw mandrel offers radial rotation application of force patchhole, be processed with the opposite screw thread of hand of spiral from the middle part of left and right sides screw mandrel respectively to two ends, left side at left and right sides screw mandrel, on right two sections threaded portions respectively rotation set offer suitable threaded interior hole and with 3 perpendicular pillars of left and right sides screw mandrel, in two skidway holes of pressing plate, be equipped with 3 stretching screws that are crimped on nose end respectively, these two groups an end of totally 6 stretching screws all offer radial rotation application of force patchhole, their other ends then are screwed in respectively in two groups of the left and right sides screw mandrels screw that 6 pillar one ends are offered totally, thereby with two groups totally 6 pillars link together together with left and right sides screw mandrel and pressing plate tension, these two groups the other end of totally 6 pillars be connected with a co-axial short cylinder leg respectively, these two groups an end of totally 6 legs offer axial pillar patchhole respectively, and also offer the radial screw fixed hole that is connected respectively with these 6 pillar patchholes, be connected with the leg hold-down screw respectively in totally 6 screw fixed holes at these two groups, the other end of these 6 pillars is made respectively in the pillar patchhole that thinner bar portion is plugged on 6 leg one ends, fixing tight with 6 corresponding leg hold-down screws respectively again, thereby an end of 6 legs removably is fixed on respectively on 6 pillars, the other end at 6 legs offers axial screw fixed hole respectively, and also offer the radial cross bar patchhole that is connected with these 6 screw fixed holes respectively, in these 6 screw fixed holes, be connected with the cross bar hold-down screw respectively; In the cross bar patchhole of 6 leg opposite positions of two secondary regulating arms, be inserted with same connection cross bar respectively, and with corresponding cross bar hold-down screw that these 6 connection cross bars are fixing respectively tight, all be processed with screw thread in an end of every connection cross bar.

2, the inserted bone external fixator of independence according to claim 1 is characterized in that, the quantity of the rotation application of force patchhole that screw mandrel middle part in the left and right sides is offered is two and orthogonal.

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