CN2776316Y - Inlay type T shaped external bone fixator - Google Patents

Abstract

The utility model relates to an inlay type T-shaped 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 plate, a screw rod, three supporting columns, six positioning nuts which are divided into three groups, three tightening screws, three supporting feet and six transverse rod fixing screws which are divided into three groups; 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 probability reduction 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, good and effective serviceability, 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

Inserted T shape 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 T shape bone external fixator 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 inserted T shape bone external fixator 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 have one parallel with pressing plate be the shaft-like screw mandrel of long screw thread, on screw mandrel respectively rotation set offer suitable threaded interior hole and with 3 perpendicular pillars of screw mandrel, the both sides of 3 pillars have respectively to spin and are fixed on two setscrew nuts on the screw mandrel, in same skidway hole of pressing plate, be equipped with two stretching screws that are crimped on nose end respectively, in another slideway of pressing plate, be equipped with another stretching screw that is crimped on nose end, one end of these 3 stretching screws offers radial rotation application of force patchhole respectively, their other ends then are screwed in respectively in the screw that an end of 3 pillars is offered on the screw mandrel, thereby 3 pillars are linked together together with screw mandrel and pressing plate tension, the other end at 3 pillars is fixed with the leg that is short cylinder respectively and forms a positive T shape structure respectively, offer respectively on 3 legs two with the screw mandrel cross bar patchhole perpendicular in the space, offer the screw fixed hole that is connected with corresponding cross bar patchhole respectively on 3 legs on these 3 groups of cross bar patchholes sides, be connected with the cross bar hold-down screw respectively in 3 groups of screw fixed holes; 3 groups at 3 leg opposite positions of two secondary regulating arms are inserted with same connection cross bar respectively in totally 6 cross bar patchholes, and totally 6 cross bar hold-down screws are fixing tight with these 6 connection cross bars with corresponding 3 groups, all are 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 is produced is shifted and the angulation deformity generation inside and outside can limiting the fracture end generation altogether, keeps resetting and effective 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 setscrew nut of 3 pillar both sides on the screw mandrel of two secondary regulating arms is regulated, move and regulate 3 pillar residing positions on screw mandrel, this moment, 3 pillars produced a left side by the stretching screw after unclamping along the strip skidway hole on the pressing plate, right displacement, again by 3 legs linking to each other with 3 pillars respectively be connected in leg on 6 be connected cross bar, contractility between pillar and the leg 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 connected into the plane stability structure of a very firm and scalable adjusting by 6 connection cross bars, so its security reliability height, complication is few, mainly be to have reduced pin hole quantity, make 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 ground latent lesion risk are reduced, its leg is embedded in by pillar and stretching screw in the strip skidway hole of pressing plate, make to connect that cross bar compresses fracture end or the scalable amplitude that prolongs is big, effectively scope of application increase; Fracture end is difficult for into angle and side deformity, and success rate of operation is higher; Structure is simpler, and easy operating uses, and 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 Fig. 1 this utility model single one secondary regulating arm.

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 have one parallel with pressing plate 1 be the shaft-like screw mandrel of screw thread 2, on screw mandrel 2 respectively rotation set offer suitable threaded interior hole and with 3 perpendicular pillars 4 of screw mandrel 2, the both sides of 3 pillars 4 have respectively to spin and are fixed on two setscrew nuts 6 on the screw mandrel 2, in same skidway hole 11 of pressing plate 1, be equipped with two stretching screws 3 that are crimped on nose end respectively, in another skidway hole 12 of pressing plate 1, be equipped with another stretching screw 3 that is crimped on nose end, one end of these 3 stretching screws 3 offers radial rotation application of force patchhole 31 respectively, their other end then is screwed in respectively in the screw that an end of 3 pillars 4 is offered on the screw mandrel 2, thereby 3 pillars 4 are linked together together with screw mandrel 2 and pressing plate 1 tension, the other end at 3 pillars 4 is fixed with the leg 5 that is short cylinder respectively and forms a positive T shape structure respectively, offer respectively on 3 legs 5 two with the screw mandrel 2 cross bar patchhole 51 perpendicular in the space, offer the screw fixed hole 52 that is connected with corresponding cross bar patchhole 51 respectively on 3 legs 5 on these 3 groups of cross bar patchholes, 51 sides, be connected with cross bar hold-down screw 7 respectively in these 3 groups of screw fixed holes 52; 3 groups at 3 leg 5 opposite positions of two secondary regulating arms are inserted with same connection cross bar 8 respectively in totally 6 cross bar patchholes 51, and totally 6 cross bar hold-down screws 7 are fixing tight with these 6 connection cross bars 8 with corresponding 3 groups, all are processed with screw thread 81 in an end of every connection cross bar 8.

In Fig. 1 and Fig. 2, all members all can adopt medical material 1Cr8Ni9Ti to make.The other end of the pillar 4 on each secondary regulating arm respectively with the mode that is connected of leg 5, embodiment inserts in the hole that leg 5 offers welding jail more respectively with pillar 4 thinner ends 41 among the figure, also can adopt other mode that is connected certainly.Connect cross bar 8 and be advisable with long 7～10cm, Φ 4.5～5mm, the length of its screw thread 81 is advisable with 3～4cm.

Claims (2)

1, a kind of inserted T shape bone external fixator, 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 have one parallel with pressing plate be the shaft-like screw mandrel of long screw thread, on screw mandrel respectively rotation set offer suitable threaded interior hole and with 3 perpendicular pillars of screw mandrel, the both sides of 3 pillars have respectively to spin and are fixed on two setscrew nuts on the screw mandrel, in same skidway hole of pressing plate, be equipped with two stretching screws that are crimped on nose end respectively, in another slideway of pressing plate, be equipped with another stretching screw that is crimped on nose end, one end of these 3 stretching screws offers radial rotation application of force patchhole respectively, their other ends then are screwed in respectively in the screw that an end of 3 pillars is offered on the screw mandrel, thereby 3 pillars are linked together together with screw mandrel and pressing plate tension, the other end at 3 pillars is fixed with the leg that is short cylinder respectively and forms a positive T shape structure respectively, offer respectively on 3 legs two with the screw mandrel cross bar patchhole perpendicular in the space, offer the screw fixed hole that is connected with corresponding cross bar patchhole respectively on 3 legs on these 3 groups of cross bar patchholes sides, be connected with the cross bar hold-down screw respectively in 3 groups of screw fixed holes; 3 groups at 3 leg opposite positions of two secondary regulating arms are inserted with same connection cross bar respectively in totally 6 cross bar patchholes, and totally 6 cross bar hold-down screws are fixing tight with these 6 connection cross bars with corresponding 3 groups, all are processed with screw thread in an end of every connection cross bar.

2, inserted T shape bone external fixator according to claim 1 is characterized in that, the other end of the pillar on each secondary regulating arm respectively with being connected of leg, be that the end that pillar is thinner inserts in the hole that leg offers welding jail again.