CN2080829U - Universal reducing fixator for long diaphysis - Google Patents

Abstract

The utility model relates to a universal reducing fixator for long diaphysis, developed by orthopaedics surgery, dynamics, and mechanical principles. The utility model is composed of screw steel needles, steel needle fixing clamps, screw rod fixing plates, a position and angle regulator, semi-circular rings, and a supporter screw rod. The utility model has the function that different fractures of long diaphyses, comprising dislocation, confusion of force lines in different directions, and torsion malformation at different angles, can be treated to obtain anatomical para-position and alignment and biological rotation. Besides, the utility model has the functions of accurate pressurizing, traction and firm fixation to the fractures, and the utility model solves various problems existing in the prior art, and has the advantages of no bad effects, firm and durable structure, adjusting agility, and convenient operation.

Description

Universal reducing fixator for long diaphysis

The present invention is a kind of omnipotent reduction fixture device for the treatment of all kinds of fracture of long diaphysis, belongs to medical apparatus and instruments.The whole bag of tricks of all kinds of fracture of existing treatment long diaphysis, exists a common shortcoming be can not make fracture be able to accurately dissect physiology resets, thereby influence its healing rate and more after function.Cause this result's reason as follows:

Traditional external fixation adopts clamping plate or Gypsum Fibrosum in skin external fixation fracture usually since between clamping plate or Gypsum Fibrosum and the fracture across soft tissues such as muscle, blood vessel, nerves, fracture end has move place, thereby is difficult to reach and dissects para-position to line; Along with wound causes disappearing of swelling and suffers from limb can not effective exercise and the muscle disuse atrophy that produces, it is loosening to have aggravated external fixation, thereby makes fracture cause malunion, the serious consequence of delayed healing or bone does not connect easily.

Internal fixation cuts soft tissue and inserts inside-fixture normally at the limb fracture place, and the two ends of will fracturing are fixed on the fixture.Because inside-fixture and knochenbruch can not fit like a glove, surgical errors often makes fracture not reach and dissects para-position to the line and the physiology anglec of rotation in addition, thereby causes malunion in various degree.

In view of the shortcoming that inside and outside fixing means exists, people have developed " scalable " external fixator that is used for the treatment of fracture, and more outstanding holder has:

The tall and erect in the world HoffmannShi VidalShi external fixator that great fame is arranged, be four link rod frame formula structures, the rod member pin joint is too many, complex structure, general fracture need be threaded a needle more than 6 in vivo, is awkward the cost height, with its treatment fracture, still can not reach ideal dissection para-position to the line and the physiology anglec of rotation.

The prolongation holder of professor Zha Nuofu of Soviet Union Erie development is a Fourth Ring multi-rod structure; The half-ring fixator of Third Military Medical University's development is three bar polycycle structures.Common drawback is complex structure and does not have para-position to the line function, carries out para-position to line though can force to adjust, and causes support screw flexural deformation, and still can not reach ideal effect.

The multi-functional prolongation holder of the external fixator of academy of traditional Chinese medicine's development and Hospital of Shandong Armed Policeman General Forces's development, common drawback are that the draw point of fixing fracture far-end can not be adjusted, and do not meet the rule of " bone surgery " desired " far-end is to near-end ".If it is not parallel to pass through the line and the key axis of key axis out of plumb of fracture far-end draw point axis and far-end or two draw points, can cause after fixing not only to misplace but also the line of force becomes the angle., because of far-end does not have the correction function, can only adjust near end after this problem appears in far-end in fracture, this has been to have transferred object wrong, the result, and corrected transposition causes the line of force to become the increasing at angle; Having corrected the line of force becomes the angle to cause the increasing of dislocation.Its structure is also unstable, has strengthened para-position to the line error, finally causes malunion in various degree.

Fact proved still do not have a kind of long bone shaft fracture that can make at present and reach the dissection para-position, make function be able to the good method of optimal recovery the line and the physiology anglec of rotation.

The objective of the invention is to overcome prior art treatment long bone shaft fracture and can not dissect para-position shortcomings such as lines, provide a kind of rational in infrastructure, adjust flexibly, has the each side dislocation position that makes all kinds of fracture of long diaphysis, the all directions line of force becomes the rotation deformity of angle, each angle, all can thoroughly correct, reach and dissect the universal fixator for reduction of longer diaphyses of para-position the line and the physiology anglec of rotation.

Imagination of the present invention realizes by following way: all wear 2 Threaded steel needles (should avoid main blood vessel when threading a needle with neural), these Threaded steel needles be attached on the adjusting device of the present invention again at each end of fracture, adjusting device can be adjusted the position of Threaded steel needle arbitrarily, and can after adjustment, give held stationary, thereby realize adjusting arbitrarily the fracture end position, make it to reach the purpose of dissection para-position the line and the physiology anglec of rotation.

Below in conjunction with accompanying drawing, introduce structure of the present invention and operating principle in detail.

Fig. 1 a is right lower extremity shank normotopia backbone (shin, a fibula) direction sketch map.

Fig. 1 b is right lower extremity shank side position backbone (shin, a fibula) direction sketch map.

Fig. 2 is a universal fixator for reduction of longer diaphyses, and the axis of no-feathering of treatment multistage comminuted fracture is surveyed sketch map.

Fig. 3 is that near-end half garden annulate shaft is surveyed sketch map.

Fig. 4 is that far-end half garden annulate shaft is surveyed sketch map.

Fig. 5 is that support screw parts axle is surveyed sketch map.

Fig. 6 transfers cyclone parts axle for positioning and surveys sketch map.

Fig. 7 is that screw-solid plywood parts axle is surveyed sketch map.

Fig. 8 surveys sketch map for solid clip part axle.

Fig. 9 is the projection of stage casing convex thread draw point cut-away section.

Figure 10 is a universal fixator for reduction of longer diaphyses, the axle survey sketch map of the general fracture of treatment embodiment.

Referring to Fig. 1 a, Fig. 1 a is depicted as right lower extremity shank front view, is the backbone of shank shown in the figure, and thick is tibia is tiny is fibula.Pressing medical definition, is inboard by the tibia direction, is the outside by the fibula direction; The knee joint direction is a near-end, and the ankle joint direction is a far-end.

Being depicted as right lower extremity shank side view referring to Fig. 1 b, Fig. 1 b, is the tibia and the fibula of shank shown in the figure, and the toe direction is the front side, and the heel direction is a rear side; The knee joint direction is a near-end, and the ankle joint direction is a far-end.

Six orientation such as inside and outside, near, far away, forward and backward described below are all according to above-mentioned definition.

Referring to Fig. 2, Figure 2 shows that the axis of no-feathering of universal fixator for reduction of longer diaphyses treatment long diaphysis multistage comminuted fracture is surveyed sketch map.1 is near-end half garden ring among the figure, 12 is far-end half garden ring, 2,11,27,32 is that cyclone is transferred in four identical positioning of structure, 3,17,26,31,10 is five screw-solid plywoods that structure is identical, 4,6,13,15,24,25,29,30,8,9 is ten solid pin folders that structure is identical, 5,7,14,16 is the Threaded steel needle that the identical stage casing of four root architectures is shaped on convex thread, 18,28 is two support screws that structure is identical, 19 are the fracture near-end, 21 are fracture stage casing end, 23 are fracture far-end, 20,22 is the Threaded steel needle that the identical end of two root architectures is shaped on screw thread.

Referring to Fig. 3, Figure 3 shows that the axle survey sketch map of near-end half garden ring (1).The inside and outside both sides of these parts and anterior arch side, the centre all is shaped on a groove, three grooves are not connected, confession screw-solid plywood (3,31) is adjusted the usefulness with the location in groove, a dull and stereotyped ear is respectively established in the arch both sides, and a hole is respectively bored in the centre, transfer the usefulness of installation with the adjustment of cyclone (2,32) for positioning, a hole is respectively bored at inside and outside rear portion, both sides, is used for mounting bracket screw rod (18,28), makes itself and this ring form rock-steady structure.

Referring to Fig. 4, Figure 4 shows that the axle survey sketch map of far-end half garden ring (12).For fixing and adjustment fracture end, and the convenient clothing of wearing, this ring is except that the hole that the support screw hole is upward corresponding with near-end half garden ring (1) is made equidistantly, and all the other each positions designs are narrower, but structure and function and near-end half garden ring (1) are basic identical.

Referring to Fig. 5, Figure 5 shows that the axis of no-feathering of support screw (18,28) is surveyed sketch map.These parts are to be shaped on distal length more than 200MM by one, the single thread of proximal length between 20～50MM, and the threadless screw rod in stage casing (33), four nuts (34,37,38,41) and four packing rings (35,36,39,40) are formed.These parts are established two altogether, and its structure is identical.

Assemble method is: the near-end of support screw (18,28) is screwed in nut (37), be threaded to no screw thread place always and revolve motionless ending, then overlap upper gasket (36) respectively, half garden of passing is respectively again encircled the support screw hole at (1) rear portion, both sides, cover upper gasket (35), screw-in nut (34) and is screwed, and is about to half garden ring (1) and is able to held stationary; Again that half garden ring (12) is roughly the same fixing in this parts far-end appropriate location, half garden ring (1,12) and these parts are formed a whole.

When the clockwise direction rotation simultaneously of the nut (38,41) of bilateral support screw (18,28), promote half garden ring (12) to the near-end translation; On the contrary, if rotation counterclockwise simultaneously then promotes half garden ring (12) to the far-end translation.

Referring to Fig. 6, Figure 6 shows that the axle survey sketch map of positioning accent cyclone (2,11,27,32).It is made up of screw rod (42), nut (43), garden ring (44).

Assemble method: after screw rod (42) and garden ring (44) linked, direction was passed the hole on the dull and stereotyped ear of half garden ring (1 or 12) front part sides respectively back to front, screwed in nut (43) again and promptly assembled and finish.

The rotation of nut (43) clockwise direction is moved these parts forward; Rotation counterclockwise then makes these parts move backward.

Referring to Fig. 7, Figure 7 shows that the structural representation of screw-solid plywood (3,17,26,31,10).It is made up of screw rod (45), the flat board (49) that is shaped on two through holes, two nuts (46,48) and a packing ring (47).Assemble method: after screw rod (45) links with dull and stereotyped (49), screw in nut (48), the garden ring that passes positioning accent cyclone (2,11,27,32) again is (except these parts (10), its assemble method and moving direction, to in the embodiment of treatment multistage comminuted fracture shown in Figure 2, introduce), three side grooves of more than half garden rings (1 or 12) overlap upper gasket (47) screw-in nut (46) then and screw and fixed.

The rotation of nut (46,48) clockwise direction, these parts move toward far-end; Rotation counterclockwise, these parts move toward near-end.

Referring to Fig. 8, Figure 8 shows that the structural representation of solid pin folder (4,6,13,15,24,25,29,30,8,9).It is made up of screw rod (50) packing ring (51) and three nuts (52,53,54) that the end is shaped on through hole.

Assemble method: screw rod (50) is overlapped upper gasket (51) respectively, screw-in nut (52,53) then is inserted in through hole the end of Threaded steel needle (5,7,14,16,20,22), again screw rod (50) is passed in two through holes of screw-solid plywood (3,17,26,31,10) respectively, screw in nut (54) more respectively, then nut (52,54) is screwed respectively, make solid pin folder (4,6,13,15,24,25,29,30,8,9) and Threaded steel needle (5,7,14,16,20,22) be able to independent stationary respectively.

With nut (52) rotation counterclockwise, Threaded steel needle is clamped; The clockwise direction rotation is then unclamped Threaded steel needle fixing.

With the rotation of nut (53,54) clockwise direction, make these parts move forward (except these parts (8,9), its moving direction will be introduced) in treatment multistage comminuted fracture embodiment shown in Figure 2; Rotation is counterclockwise moved it backward.

Referring to Fig. 9, Fig. 9 for the plane that has cut-away section of stage casing convex thread draw point (5,7,14,16) and A to (facade) projection.It is shaped as Cylinder, and the stage casing is shaped between 40～60MM, and pitch is between 1.2～1.8MM, tooth depth is protruded the single thread of needle body diameter below 2MM, bottom diameter and needle body equal diameters, and the screw thread starting point is begun by the needle body diameter, through 4～8 all screw threads, be smoothly transitted into the screw thread maximum outside diameter; Screw thread was not held by the screw thread maximum outside diameter beginning, was smoothly transitted into the needle body diameter through 4～8 all screw threads.Head is made the pointed syringe needle of flat sharp sword, utilize it to penetrate fracture end, threaded portion passes the offside cortical bone, do not expose outside the skin, draw point firmly is connected with knochenbruch, avoid its stressed tailing edge draw point axis direction string moving, guarantee that para-position is accurate, the needle body of having avoided simultaneously polluting seals in and causes infection in the body.The draw point two ends are fixed with solid pin clamping.

Threaded steel needle of the present invention (5,7,14,16,20,22) is made with the titanium alloy rustless steel, and remaining parts is made with material such as rustless steel, general steel or aluminium alloys.

Referring to Figure 10, Figure 10 shows that universal fixator for reduction of longer diaphyses, the axle survey sketch map of the general fracture of treatment embodiment.What be fixed is fracture of tibia, and fracture near-end (19) and fracture far-end (23) are respectively worn 2 Threaded steel needles.Fracture near-end (19) is worn Threaded steel needle (5,7) in the common peroneal nerve front side, fracture far-end (23) rear portion dark in calf and superficial peroneal nerve thread a needle (14,16), the draw point convex thread partly runs through the offside cortical bone, do not expose outside the skin, the two ends of draw point (5,7,14,16) are fixing with solid pin folder (4,6,29,30,13,15,24,25) respectively, Gu pin folder (4,6,29,30,13,15,24,25) is a first step at two through hole internal fixation of screw-solid plywood (3,17,26,31) respectively again; Second step is that cyclone (2 is transferred in positioning, 11,27,32) assemble in the hole on the dull and stereotyped ear of ring (1 or 12) both sides, half garden respectively, again with half garden ring (1 or 12) and support screw (18,28) form fixed support, then with this support from front to back direction be inserted in the trouble limb, and the cyclone (2 of will transposing, 11,27,32) garden annular distance is aimed at screw-solid plywood (3,17,26,31) after, support is promoted toward a distant place, make screw-solid plywood (3,17,26,31) pass positioning and transfer cyclone (2,11,27,32) garden annular distance, more than half gardens ring (1 or 12) both sides groove is fixed, and has promptly finished this routine fixation of fractures.

After the fracture fixation,, can demonstrate various dislocation and become problems such as angle with the line of force, do para-position by Figure 10 below line is corrected deformity introduction by the X-ray ray examination:

One, dissects para-position

Fracture be if dislocation must make union of fracture slow, more certainly will produce longitudinal shear and key the verting trend of axis of far-end during the power transmission of back and influences function, reaches the dissection para-position so must correct each side dislocation position.

1, normotopia is dissected para-position: (dislocation and outer dislocation in correcting)

Far away, the nearly two ends of the fracture of normotopia are not on same axis, and the fracture far-end claims interior dislocation in the inner part, otherwise claim outer dislocation.

Correcting method: the solid pin nut that unclamps earlier solid pin folder (13,15,24,25) slightly.If interior dislocation, Threaded steel needle (14,16) is affected outward and misplace equidistant, it is mobile outward together that draw point (14,16) promptly drives the fracture far-end (23) that is fixed, and interior dislocation is promptly corrected; Otherwise Threaded steel needle (14,16) is affected toward in, then correct outer dislocation.After corrected transposition reaches and dissects para-position, screw the solid pin nut of solid pin folder (13,15,24,25), make the fracture far-end (23) that fuses with draw point (14,16) be able to held stationary.

2, para-position is dissected in the side position: (dislocation and back dislocation before correcting)

Far away, the nearly two ends of the fracture of side position are not on same axis, and the forward side of fracture far-end claims preceding dislocation, otherwise claim the back dislocation.

Correcting method: unclamp earlier the fixing of screw-solid plywood (17,26) slightly.If preceding dislocation, the cyclone of will transposing (11,27) is adjusted simultaneously backward, and screw-solid plywood (17,26) is moved with its fracture far-end (23) that is fixed backward, and preceding dislocation promptly gets and corrects; Otherwise the cyclone of will transposing (11,27) is adjusted forward simultaneously, then corrects the back dislocation.After corrected transposition reaches and dissects para-position, screw the hold-down nut of screw-solid plywood (17,26), make the fracture far-end (23) that fuses with these parts be able to held stationary.

3, para-position is dissected in the position incomparably: (correcting the dislocation of loxosis and arbitrary orientation)

An all places dissection para-position is meant the dislocation of correcting the contingent space of fracture far-end arbitrary orientation, and the loxosis that its feature is generally just showing, the side position all misplaces misplaces.

Correcting method: after the normotopia of will fracturing is dissected para-position, again para-position is dissected in the side position, the loxosis dislocation is promptly corrected.The dislocation that can correct position, fracture all places with the method reaches the dissection para-position.

Two, dissect line

Fracture makes function reduction if the healing of the line of force angulation deformity during bearing load, certainly will produce moment of flexure, and increase with the increase of body weight and labor intensity in bone.So must correct all directions line of force angulation deformity, make fracture anatomy to line.

1, normotopia is dissected line: (correcting genu varum and in knee)

The key line of force in the fracture of normotopia two ends far away, near is not parallel angle, and the key line of force of a fracture far-end distant place claims genu varum, otherwise is called in knee in pointing to.

Correcting method: self hold-down nut that unclamps earlier solid pin folder (13,15,24,25) slightly.If genu varum, with the past near-end of screw-solid plywood (17), (26) past far-end adjustment, driving draw point (14,16) and fracture far-end (23) is axle to unclamp fixed pin folder (13,15,24,25) admittedly slightly, produces clockwise rotation, and genu varum is promptly corrected; Otherwise toward far-end, (26) past near-end adjustment, then correct in knee screw-solid plywood (17).Correct genu varum with in knee reach dissection to line after, screw the hold-down nut that solid pin presss from both sides (13,15,24,25), make the fracture far-end (23) that fuses with these parts be able to held stationary.

2, dissect line (correcting knee joint contrary flexure and knee joint flexing) the side position

Far away, the nearly two ends of the fracture of the side position line of force is not parallel angle, claims knee joint contrary flexure (also claiming the knee joint hyperextension) before the key line of force of fracture far-end distant place side points to, otherwise is called the knee joint flexing.

Correcting method: will consolidate pin folder (15,24) and adjust simultaneously backward, and drive the Threaded steel needle (16) and the fracture far-end (23) that are fixed, be axle with Threaded steel needle (14), and a generation distant place is to backward rotation, and the knee joint contrary flexure is promptly corrected; Adjust forward simultaneously otherwise will consolidate pin folder (15,24), then driving the Threaded steel needle (16) and the fracture far-end (23) that are fixed be axle with Threaded steel needle (14), and a generation distant place is to forward rotation, and the knee joint flexing is promptly corrected, and until dissection line is ended.

3, incomparably to dissecting to line (line of force of correcting loxosis and any direction becomes the angle)

The all places is meant the line of force angulation deformity of correcting the contingent space of fracture far-end any direction to dissecting to line, and its feature is generally just showing, side virial line all becomes the loxosis line of force at angle to become the angle.

Correcting method: can earlier normotopia be dissected behind the line, the side position be dissected line again, the loxosis line of force becomes the angle promptly to be corrected.With the method can correct incomparably to the line of force become the angle to reach dissection to line.

Three, adjust the anglec of rotation (correcting inward turning and outward turning deformity)

Fracture far-end (23) is called the inward turning deformity, otherwise is called the outward turning deformity around the past internal rotation (clockwise direction) of the axis of fracture near-end (19).Fracture rotation deformity healing, each joint of limbs can not coordination exercise and cause traumatic arthritis, must correct the inside and outside deformity of revolving, and fracture is healed by the physiology angle.

Correcting method: unclamp earlier the fixing of screw-solid plywood (17,26) slightly.If inward turning deformity, the cyclone of will transposing (11) are backward, (27) adjust forward, promptly drive the fracture far-end (23) that is fixed and rotate (counterclockwise) outward, the inward turning deformity is promptly corrected; Otherwise the cyclone of will transposing (11) forward, (27) adjust backward, then corrects the outward turning deformity.After correcting the rotation deformity Da Shengli anglec of rotation, screw-solid plywood (17,26) is fixed, made fracture far-end (23) held stationary that fuses with these parts.

Four, Gu Zhe pressurization and traction

After the fracture fixation,, be unfavorable for that osteanagenesis need pressurize if far away, nearly gap between two ends is excessive; But, cause shortened deformity healing to walk lamely and need draw for preventing that broken bone piece is overlapping to comminuted fracture.

Fracture is if need pressurization, screw-solid plywood (17,26) simultaneously toward the near-end adjustment or with the past near-end adjustment of far-end half garden ring (12), all can be driven the fracture far-end (23) that is fixed and moves toward near-end, disappear until fracture gap, far away, nearly two end in contact of fracture are ended, promptly finished fracture with compressive; If otherwise the broken bone piece of comminuted fracture is overlapping, need draw again, simultaneously toward the far-end adjustment or with the past far-end adjustment of far-end half garden ring (12), overlapping broken bone piece be retracted screw-solid plywood (17,26), until ending, promptly finished fracture traction with symmetrical limbs are accurately isometric.

It can also be seen that from shown in Figure 10, it is far away that this example is fractured, nearly two ends fixed part symmetry, near-end possesses far-end, and all adjust function, its design motivation is to prevent that the doctor is with Threaded steel needle (5,7) wear tiltedly, its axis and fracture near-end (19) line of force out of plumb or draw point (5,7) line is not parallel with fracture near-end (19) line of force, the fracture near-end line of force and support screw (18 can appear after fixing, 28) axis just, the side position is not parallel, depart from allowed band and cause the line of force distant place sensing of fracture near-end (19), when making fracture far-end (23) can not dissect para-position to line, adopt each parts of near-end to adjust, make its support two screw rods (18,28) axis just, the side position is all parallel with the key line of force of fracture near-end (19), for being adjusted to, the fracture far-end dissects para-position to line, guarantee is provided, has played the double insurance effect.

Referring again to Fig. 2, shown in the figure embodiment of treatment multistage comminuted fracture.The fixing of near-end (19), fracture far-end (23) of fracturing among the figure, with Figure 10 introduced identical, so do not give unnecessary details, the adjustment of only introducing fracture stage casing end (21) with fix.

Because the lower limb posterior leg is the dense part of nervus vasculairs, the outside has also that calf is dark, calf is shallow, sural nerve and peroneal artery pass through, have only inboard and front side not to have main blood vessel with neural, the stage casing end of in addition fracturing does not have the generation of excessive unstability moment, so adopt half pin that does not run through limbs to fix in the front side of fracture stage casing end (21).

Implementation method: wear two Threaded steel needles (20,22) in the front side of fracture stage casing end (21) and reach the offside cortical bone, then will consolidate the end that pin folder (8,9) is inserted in Threaded steel needle (20,22); Again screw-solid plywood (10) is encircled (12) anterior arch groove toward a distant place to half garden that penetrates by near, and the solid pin folders of two through-hole alignments (8,9) of these parts are inserted in, then screw the hold-down nut of each parts, fracture stage casing end (21) is promptly fixed.

Correct lopsided method:

Gu pin folder (8,9) moves simultaneously outward, dislocation in correcting; Otherwise then correct outer dislocation.Threaded steel needle (20,22) affects forward simultaneously corrects the back dislocation; Otherwise dislocation before correcting.

Gu pin folder (9) is in knee toward interior shifting and correcting; Otherwise then correct genu varum.Gu pin folder (8,9) clockwise direction simultaneously rotates correction knee joint flexing; Otherwise then correct the knee joint contrary flexure.

Screw-solid plywood (10) moves toward near-end, makes fracture with compressive; Otherwise then make fracture traction.

The rotation of screw-solid plywood (10) clockwise direction, the outward turning of correction fracture; Otherwise then correct the fracture inward turning.

For the comminuted fracture of multistage more, can be with reference to the omnipotent fixation clamp of screw-solid plywood (10), solid pin folder (8,9) and Threaded steel needle (20,22) composition, the way of bone fixation compromise Duan Duan (21), roughly the same fixing in the front side arcuate recess of half garden ring (1).

For all kinds of fracture of femur, humerus, ulna, radius, can roughly the same fix and adjustment with reference to said method, repeat no more.

In sum as can be known, the dislocation that the present invention has the interior dislocation that makes all kinds of fracture of long diaphysis, outer dislocation, preceding dislocation, back dislocation, loxosis dislocation and each orientation is able to thorough correction, reaches the function of dissecting para-position; The line of force with the genu varum of making, in knee, knee joint contrary flexure, knee joint flexing and all directions becomes the angle to be able to thorough correction, reaches the function of dissection to line; Have accurate correction inward turning and outward turning deformity, the function of the Da Shengli anglec of rotation; Has the closely pressurization function of contact of the fracture of making; Have the comminuted fracture of making traction to the accurate universal fixator for reduction of longer diaphyses of isometric traction function of symmetrical limbs.

The present invention compared with prior art has the following advantages:

1, the present invention has and all kinds of fracture of long diaphysis reached dissect contraposition to the function of line and the physiology anglec of rotation, make fracture functional rehabilitation and figure's optimum degree that all reaches attractive in appearance, solved the unsolved difficult problem of prior art.

2, treat fracture with the present invention, be fixed on " adding wound on the wound " and outer fixing compressing to soft tissue that fracture is operated in having avoided, thereby improved blood circulation, accelerated union.

3, the present invention fixes fracture with the minimum draw point in cross section, little to tissue injury, be particularly suitable for the treatment of open fracture, can avoid wound and thread a needle fixingly, solve early stage debridement treatment open injury, can not execute inside and outside fixed contradiction, not only stopped the malunion or the bone does not connect that cause because of it, and because accurately the resetting and fixedly secure of fracture end, avoid infection for thorough debridement, advantage is provided.

4, each part stability of the present invention can be good, be equipped with the fixing fracture of the good titanium alloy stainless pin of elasticity " coordination of potent and mild therapies " again, not only there is good stable to fix, and when function exercise has big load forces to transmit, draw point produces " ess-strain ", make far away, the nearly two end in contact power transmissions of fracture, stimulate the fracture face, quickly-healing.The diseases such as osteoporosis that " stress substitutes " having avoided rigidly fixing causes.

5, the present invention has accurate pressurization and traction function, and pressurization has closely promoted union of fracture; Traction is accurate, the limping of having avoided the two not isometric healings of limb of comminuted fracture to be caused.

6, the present invention half garden ring adopts " ∩ " shape, rear portion standard-sized sheet mouth, can directly be inserted in immobilization of the wounded limb, easy to operate, suffer from during the treatment limb can be directly and bench grafting touch power transmission, Threaded steel needle and half garden ring does not bear suffers from limb weight, and not only the patient is comfortable, and has avoided draw point and osseous tissue long time stressed excessive and cause the damage of osseous tissue.

7, support screw of the present invention places half garden ring rear portion, and immobilization of the wounded limb makes support screw keep at a distance with suffering from limb in anterior three side grooves are encircled in half garden, just, side position X-ray line is not overlapping, thus can clear demonstration fracture situation.

8, firm banded Threaded steel needle of employing of the present invention and fracture end and adjusting device of the present invention fuse, thereby have prevented not only that contaminated draw point from sealing in and controlled infection in the body effectively, and can make fracture end keep firm stable for a long time accurately.

9, volume of the present invention is little, easy to carry, can carry out function exercise during the treatment, functional rehabilitation is fast.Avoided internal fixation to need operation once more to get the ankylosis that inside-fixture and external fixation cause.

10, the present invention is rational in infrastructure, and each parts does not all have wearing and tearing and the destruction that unreasonable stress causes, and is sturdy and durable, can be repeatedly used, thereby medical expense is low.

11, the present invention is easy and simple to handle, easily popularizes, and also is suitable for field hospital merges firearm injury to open fracture rescue of battlefield.

Claims (10)

1, a kind of universal fixator for reduction of longer diaphyses that is used for the treatment of all kinds of fracture of long diaphysis is characterized in that this holder all wears 2 Threaded steel needle (5 by each end of fracture, 7,14,16,20,22), be used for fixing Threaded steel needle (5,7,14,16,20,22) solid pin folder (4,6,13,15,24,25,29,30,8,9), be used for adjusting and fixing solid pin folder (4,6,13,15,24,25,29,30,8,9) screw-solid plywood (3,17,26,31,10), with screw-solid plywood (3,17,26,31,) be connected and make it do positioning that the fore-and-aft direction translation adjusts and transfer cyclone (2,11,27,32), be used for assembling and adjust positioning cyclone (2,11,27,32) semicircular ring (1,12) and be used to link semicircular ring (1,12) support screw (18,28) form.

2, as the said universal fixator for reduction of longer diaphyses of claim 1, the stage casing that it is characterized in that Threaded steel needle (5,7,14,16) be shaped on length between 40～60MM, pitch between 1.2～1.8MM, tooth depth below 2MM, the single line convex thread of internal diameter and needle body equal diameters.

3, as the said universal fixator for reduction of longer diaphyses of claim 2, the screw thread starting point that it is characterized in that convex thread begins (promptly with the draw point equal diameters) by the diameter of draw point, is smoothly transitted into the maximum outside diameter of convex thread through 4～8 weeks.Screw tip is smoothly transitted into the needle body diameter by the external diameter beginning of screw thread maximum through 4～8 weeks.

4, as the said universal fixator for reduction of longer diaphyses of claim 1, it is characterized in that solid pin folder (4,6,13,15,24,25,29,30,8,9) by an end be shaped on a through hole screw rod (50), be enclosed within that three nuts (52,53,54) on this screw rod (50) and a packing ring (51) form.

5, as the said universal fixator for reduction of longer diaphyses of claim 1, it is characterized in that screw-solid plywood (3,17,26,31,10) is attached thereto by a screw rod (45) one flat board (49) that is shaped on two through holes, cover two nuts (46,48) and a packing ring (47) thereon formed.

6,, it is characterized in that positioning transfers cyclone (2,11,27,32) to be made up of the annulus that has preformed hole (44) of a screw rod (42), coupled knot and a nut (43) as the said universal fixator for reduction of longer diaphyses of claim 1.

7, as the said universal fixator for reduction of longer diaphyses of claim 1, it is characterized in that inside and outside, first three side of half garden ring (1,12) respectively is shaped on a groove, three-flute is not connected.

8,, it is characterized in that half garden encircles inside and outside two forequarters dull and stereotyped ear with holes in the middle of being shaped on as the said universal fixator for reduction of longer diaphyses of claim 7; Inside and outside rear portion, both sides is shaped on the through hole of mounting bracket screw rod.

9, as the said universal fixator for reduction of longer diaphyses of claim 1, it is characterized in that the stage casing of support screw (33) does not have screw thread, far-end be shaped on length more than the 200MM, near-end is shaped on the single thread of length between 20～50MM.

10, as the said universal fixator for reduction of longer diaphyses of claim 1, it is characterized in that Threaded steel needle (5,7,14,16,20,22) makes with the titanium alloy rustless steel, remaining parts is made with rustless steel, general steel or aluminium alloy.

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