CN2785552Y - Inlay type bone external-fixer - Google Patents

Abstract

The utility model relates to an inlay type bone external-fixer which is composed of two pairs of regulating arms with identical structures and at least four connecting transverse rods, wherein each pair of regulating arms is totally composed of a pressing block, a left and a right screw rods, two supporting columns, two tightening screws, two support feet, and at least two transverse rod fixing screws on each support foot; 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 bones restoration and the extension and the shrinking pressurization of the bones can be realized. The utility model has the advantages of high safety, pinhole quantity reduction, the small probability of infected occurrence, pinhole scar reduction, 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 effective applicability, the difficult occurrence of angulation and 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 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 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 bone external fixator easy to carry are provided.

Solution of the present utility model is as follows.It is at least 4 the cross bar that is connected by identical regulating arm of two auxiliary structures and the quantity that this two secondary regulating arm is coupled together and constitutes, 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 the 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 the perpendicular pillar of left and right sides screw mandrel, in two skidway holes of pressing plate, be equipped with the stretching screw that is crimped on nose end respectively, one end of two stretching screws offers radial rotation application of force patchhole, the other end then is screwed in respectively in the screw that two pillars, one end is offered on the screw mandrel of the left and right sides, thereby two pillars are linked together together with left and right sides screw mandrel and pressing plate tension, the other end at two pillars is fixed with the leg that is short cylinder respectively, offer respectively on two legs quantity be at least 2 and all with the screw mandrel cross bar patchhole perpendicular in the left and right sides in the space, offer the screw fixed hole that is connected with this cross bar patchhole respectively on the leg on each cross bar patchhole side, be connected with the cross bar hold-down screw in each screw fixed hole; In the cross bar patchhole of two leg opposite positions of two secondary regulating arms, be inserted with same connection cross bar respectively, and it is fixing tight to connect cross bar with corresponding cross bar hold-down screw, and an end that is at least 4 every connection cross bar in quantity all is processed with screw thread.

This utility model with said structure, its two secondary regulating arm fuses by the connection cross bar 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 hold with the human fracture by its connection cross bar in use and link to each other, the plane stability of this structure has restricted fracture end the front and back displacement has taken place, angulation displacement 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 displacement take place, and keeps fracture end and resets with effectively fixing; 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 two 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.

This utility model beneficial effect is, 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 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 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 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 that 6 the cross bar 7 that is connected constitutes by identical regulating arm of two auxiliary structures and the quantity that this two secondary regulating arm is coupled together, wherein the structure of each secondary regulating arm is: the pressing plate 1 with a strip, pressing plate 1 offers the sliding through 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 this left and right sides screw mandrel 2 offers two mutually perpendicular rotation application of force 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, on these two sections threaded portions 23 and 24 respectively rotation set offer suitable threaded interior hole and with the perpendicular pillar 4 of left and right sides screw mandrel 2, in two skidway holes 11 and 12 of pressing plate 1, be equipped with the stretching screw 3 that is crimped on nose end respectively, one end of two stretching screws 3 offers radial rotation application of force patchhole 31 respectively, the other end then is screwed in respectively in the screw that two pillars, 4 one ends on the left and right sides screw mandrel 2 offer, thereby pillar 4 is linked together together with left and right sides screw mandrel 2 and pressing plate 1 tension, the other end at two pillars 4 is fixed with the leg 5 that is short cylinder respectively, offer quantity on two legs 5 respectively and be 3 and all with the left and right sides screw mandrel 2 cross bar patchhole 51 perpendicular in the space, offer the screw fixed hole 52 that is connected with cross bar patchhole 51 respectively on the leg 5 on each cross bar patchhole 51 side, be connected with cross bar hold-down screw 6 respectively in each screw fixed hole 52; Two groups at two leg 5 opposite positions of two secondary regulating arms are inserted same connection cross bar 7 respectively in totally 6 cross bar patchholes 51, and with corresponding cross bar hold-down screw 6 that this 6 connection cross bars 7 are fixing tight, be that an end of 6 every connection cross bar 7 all is processed with screw thread 71 in quantity.

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 legs 5 offer welding jail again with pillar 4 thinner ends 41 among the figure, also can adopt other mode that is connected certainly.The quantity of the cross bar patchhole of offering respectively on the leg 5 of each secondary regulating arm 51, and the quantity of respective screws fixing hole 52 are advisable with 2～4 respectively, and pitch-row is wanted evenly to be advisable with 1～1.5cm, and the aperture is good with Φ 5.2mm then.Connect cross bar 7 and be advisable with long 7～10cm, Φ 4.5～5mm, the length of its threaded portion 71 is advisable with 3～4cm.

Claims (3)

1, a kind of inserted bone external fixator, it is characterized in that, it is at least 4 the cross bar that is connected by identical regulating arm of two auxiliary structures and the quantity that this two secondary regulating arm is coupled together and constitutes, 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 the 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 the perpendicular pillar of left and right sides screw mandrel, in two skidway holes of pressing plate, be equipped with the stretching screw that is crimped on nose end respectively, one end of two stretching screws offers radial rotation application of force patchhole, the other end then is screwed in respectively in the screw that two pillars, one end is offered on the screw mandrel of the left and right sides, thereby two pillars are linked together together with left and right sides screw mandrel and pressing plate tension, the other end at two pillars is fixed with the leg that is short cylinder respectively, offer respectively on two legs quantity be at least 2 and all with the screw mandrel cross bar patchhole perpendicular in the left and right sides in the space, offer the screw fixed hole that is connected with this cross bar patchhole respectively on the leg on each cross bar patchhole side, be connected with the cross bar hold-down screw in each screw fixed hole; In the cross bar patchhole of two leg opposite positions of two secondary regulating arms, be inserted with same connection cross bar respectively, and it is fixing tight to connect cross bar with corresponding cross bar hold-down screw, and an end that is at least 4 every connection cross bar in quantity all is processed with screw thread.

2, inserted bone external fixator 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.

3, inserted bone external fixator according to claim 1 and 2 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.

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