CN102813544B - External fixing rack for hip fracture - Google Patents

Abstract

The invention provides an external fixing rack for hip fracture, and relates to an instrument for orthopedic external fixation treatment. The external fixing rack for hip fracture is provided with two fixing handles penetratingly fixed with bone screws; at least two universal joints are arranged at the head of the upper fixing handle, the angle between each universal joint and the head of the upper fixing handle can be changed, and each universal joint is penetratingly fixed with one bone screw; at least one universal joint is arranged on the lower portion of the lower fixing handle, the angle between each universal joint and the head of the upper fixing handle can be changed, and each universal joint is penetratingly fixed with one bone screw; and the upper portion of the lower fixing handle is slidably sleeved in a guide groove on the lower portion of the upper fixing handle and is fixed in the guide groove by a jackscrew arranged on the lower portion of the upper fixing handle. The external fixing rack can be used for external fracture reduction repeatedly, has a good and sufficient sliding prizing effect, can effectively maintain the proximal end of the fractured hip of a patient at an external unfolded position, is flexible and various in adjustment mode, and is applicable to complex fracture conditions.

Description

The external fixer of Hip Fracture

Technical field

The present invention relates to a kind of apparatus for orthopaedics extenal fixation operative treatment.

Background technology

The therapeutic method of surgery of Hip Fracture, main based on internal fixation treatment at present.For the patient of Therapy of Elder Hip Fracture with osteoporosis, sclerotin is not enough to the hold of bone screw, coxa vara, suffering limb cripetura appear in Ineffective internal fixation, the medial displacement of section far away of fracturing, the cutting of lag screw and os integumentale screw are extracted etc., and complication rate increases greatly, easily causes the failure of internal fixation treatment.For the patients with hip fracture being difficult to row internal fixation treatment, use hip External Fixation in Treatment, have certain advantage.In clinical application, traditional Hip Fracture external fixer shows following deficiency: 1, heavier; 2, lack enough slip sleds and allocate for use, often cause the generation of coxa vara; 3, wound is often comparatively large, and operation technique is complicated.

Such as, it is ZL0221048.8 that Chinese utility model patent description CN 2548576Y discloses the patent No., name is called the technical scheme of " external fixer for fracture heal ", propose to connect two fixed handles with a universal joint, wherein be positioned on the upper fixed handle above universal joint and place two draw points (bone screw) in a predetermined manner, these two wire drills enter in femoral head; Be positioned on the lower fixed handle below universal joint and place a draw point in a predetermined manner, this wire drill enters in femoral shaft.Wherein be positioned in the middle part of the draw point above fixed handle and be provided with tapered thread body, the pitch of this tapered thread body is less than the pitch of this draw point head threads.This tapered thread body enters femoral greater trochanter portion with this wire drill, makes the prestressing force producing tension between femoral head and femoral shaft.Thus can ensure bone break place closely cooperating, all the other two draw points play supporting and location effect simultaneously.Be particularly suitable for neck of femur and intertrochanteric fracture healing.But it also exists dials underswing to the slip sled of fracture near-end, and fixing firm not, adjustment mode is single, can not adapt to the shortcoming of complicated fracture situation.

Summary of the invention

The present invention aims to provide one repeatedly can carry out the external reduction of the fracture, there is good, enough slip sleds and allocate for use, effectively can maintain Hip Fracture near-end in outer exhibition position, adjustment mode is versatile and flexible, fixed, can adapt to the Hip Fracture external fixer of complicated fracture situation.

Technical scheme of the present invention is: the external fixer of Hip Fracture, there is the fixed handle that two place fixed bone screw, upper fixed handle head wherein at least arranges two gimbal suspensions, and each gimbal suspension can change the angle that relatively goes up fixed handle head and place fixes a bone screw; Lower fixed handle bottom wherein at least arranges a gimbal suspension, and this gimbal suspension can change the angle that relatively goes up fixed handle head and place fixes a bone screw; The top of this lower fixed handle is sleeved in the guide groove of fixed handle bottom on this slidably and the jackscrew being arranged on fixed handle bottom on this is fixed in this guide groove.

The external fixer of Hip Fracture of the present invention, the two pieces of bone screw (being commonly referred to hollow nail) entering neck of femur are connected and fixed by two gimbal suspensions and upper fixed handle head; The bone screw (being commonly referred to spicule) entering femur dry end is connected and fixed by corresponding gimbal suspension and lower fixed handle.Apply external force to the two pieces of bone screw entering neck of femur during the reduction of the fracture, can change the setting angle of corresponding gimbal suspension, can prize the femur position of dialling corresponding bone screw and piercing, thus make the outside superior displacement of fracture near-end, neck of femur collodiaphyseal angle and top rake are recovered; Release jackscrew, changes the lower position of fixed handle top in the guide groove of upper fixed handle bottom, just can change the distance between the bone screw on the bone screw of upper fixed handle head and lower fixed handle, utilize femoral shaft to implement to neck of femur the sled group that slides.So the present invention repeatedly can carry out the external reduction of the fracture, effectively can maintain Hip Fracture near-end in outer exhibition position, adjustment mode is versatile and flexible, has good slip sled and dials amplitude, can adapt to the fracture situation of various complexity.

Described gimbal suspension one end is the bulb that diameter is larger, and the other end is the screw rod that diameter is less, and a centre bore wearing bone screw runs through bulb and the screw rod of this gimbal suspension; The bulb of described gimbal suspension is separated into the blade of multiple clamping bone screw by radial grooving; Described upper fixed handle head and described lower fixed handle arrange gimbal suspension hole respectively, and the distal side in each gimbal suspension hole arranges the ball-and-socket accepting gimbal suspension bulb; The screw rod of a described gimbal suspension passes the gimbal suspension hole on fixed negative winding stem or lower fixed handle and screws togather a joint nut, and the bulb of this gimbal suspension leans the ball-and-socket in this gimbal suspension hole.

Release joint nut, the bulb of this gimbal suspension no longer applies the active force of extruding to the ball-and-socket in corresponding gimbal suspension hole, the setting angle of gimbal suspension on upper fixed handle head or lower fixed handle can be changed by External Force Acting, that is change the angle that corresponding bone screw pierces femur; And each blade of the bulb of this gimbal suspension loosens the bone screw be set in its centre bore.Screw joint nut, the bulb of this gimbal suspension, for the active force of the ball-and-socket applying extruding in corresponding gimbal suspension hole, can lock the setting angle of gimbal suspension on upper fixed handle head or lower fixed handle, that is lock the angle that corresponding bone screw pierces femur; And make the bone screw clamped by the clamping of each blade of the bulb of gimbal suspension.So this gimbal suspension is easy to adjust, and the axial latching force be threaded is very large, each blade of bulb can be made inwardly to shrink under the extruding force effect of the ball-and-socket in gimbal suspension hole, clamp bone screw tightly, and locking is reliable.

The distal side of described joint nut arranges spherical flange; Be provided with pad between described joint nut and described upper fixed handle or described lower fixed handle, the endoporus of this pad is the bellmouth of the spherical flange accepting described joint nut.

Utilize the cone-shaped inner hole on pad to accept the spherical flange of joint nut, both can the locking of relative tilt ground.So the structure of this joint nut and pad, solves locking problem when gimbal suspension and upper fixed handle or lower fixed handle tilt; When can ensure that gimbal suspension is in different setting angles, gimbal suspension can stably be locked on upper fixed handle or lower fixed handle by joint nut.

Proximal lateral end face near gimbal suspension hole on the proximal lateral end face of described upper fixed handle head near gimbal suspension hole and described lower fixed handle is embossing face; The distal side end face of described pad establishes multiple salient point; Embossing face on the embossing face of the fixed negative winding stem of salient point contact of described pad or described lower fixed handle.

The embossing face of utilization coordinates with salient point, prevents pad from sliding; Add the stability that pad contacts upper fixed handle head or lower fixed handle, thus gimbal suspension and bone screw angle stability in an inclined state can be improved.

Fixed handle is the plate body of head sizes much larger than bottom, on this, the bottom of the head standing opposite of fixed handle proximally rolls tiltedly, on this, the head central authorities of fixed handle are provided with gimbal suspension hole, center, and the periphery in gimbal suspension hole, Bing Gai center arranges at least two gimbal suspension holes.

This upper fixed handle overall structure is light and head that is that tilt meets the anatomical shape feature of near end of thighbone, is convenient to gimbal suspension and bone screw and meets neck of femur anatomical angulation and fix.Utilization be arranged at gimbal suspension hole, center optionally with periphery multiple gimbal suspension hole combine, what angle differed arranges gimbal suspension and bone bone screw, and it is flexible that gimbal suspension and bone bone screw arrange combination collocation, the fixing of complex situations fracture can be adapted to.

Establish axis hole outside the guide groove of fixed handle and pivot joint driving shaft, the distal side of this driving shaft be set with one with the Knucle-gear of this driving shaft synchronous axial system; Described lower fixed handle arranges tooth bar on the side of this Knucle-gear, and this tooth bar engages with this Knucle-gear; The distal side of this driving shaft is established screw rod and is screwed togather a nut, and this driving shaft and this Knucle-gear to be fixed on this on fixed handle by this nut.

Utilize driving shaft and gear to promote lower fixed handle to move relative to the guide groove of upper fixed handle, both can reach the effect of accurate adjustment, also be convenient to the operation in performing the operation.Utilize nut to be fixed on upper fixed handle by driving shaft and Knucle-gear, locking effect is good, and is convenient to the operation in operation.

Be provided with through endoporus along axis in described bone screw, establish inner hexagonal hole at tail end, the joining place of this inner hexagonal hole and this endoporus establishes female thread, and this female thread is spirally connected the extension arm arranged in addition.

The near-end of bone screw can connect and extend rod, so that in the proximal part length of reduction of the fracture time delay long bone screw (comprising hollow nail and spicule).By carrying out clamping compression to the special large pliers of prolongation rod, realize allocating for use to the abduction sled of fracture near-end.After the reduction of the fracture, after locking the securing member of this external fixer, prolongation rod can be unloaded.Extend rod and can not play burden effect to external fixer.Greatly facilitate the operation of the reduction of the fracture.

The external fixer of Hip Fracture of the present invention, adopts above-mentioned structure to have small and exquisite, light, easy to use feature.Its advantageous feature in treatment is: 1, and the bone screw (hollow nail) entering neck of femur is gimbal mechanism with connecting of upper fixed handle head.By during the reduction of the fracture to the adjustment of gimbal suspension, can realize bone screw (hollow nail) slip sled dial, be better than other external fixation system.2, on upper fixed handle head and lower fixed handle, gimbal suspension hole is more, also can need according to concrete fracture condition the selection carrying out gimbal suspension installation site in art.The angle of each gimbal suspension and bone screw and direction can be different, can carry out the fixing and multi-angle of boniness screw simultaneously and fix, can adapt to the Various Complex situation of fracturing.3, each bone screw proximal part crossing fixed handle head and lower fixed handle can be extended by extending rod, available large pliers carries out clamping pressurization to prolongation rod, thus sled group is carried out to fracture two broken ends of fractured bone, make fracture near-end abduction, prevent the generation of coxa vara, and prestressing force pressurization can be carried out to fracture site, promote the healing of fracture.4, lower fixed handle slides in the guide groove of upper fixed handle bottom, has sliding card machine system, ensure that bone screw (hollow nail) abduction sled dial carry out smoothly.5, operation wound is little, installs simple, light, little to the interference of fracture site, can operate under local anaesthesia, is especially applicable to internal fixation operation risk comparatively large, and the patient of operation of having to.6, this system goes up the slip of fixed handle and the Regulation mechanism of gimbal suspension relatively by lower fixed handle, and the slip abduction sled realizing oneself dials characteristic, avoids the generation of coxa vara to greatest extent.7, use this system repeatedly externally can carry out the reduction of the fracture, effectively can maintain Hip Fracture near-end in outer exhibition position.

Accompanying drawing explanation

Fig. 1 is the Facad structure schematic diagram of an external fixer embodiment of Hip Fracture of the present invention.

Fig. 2 is the perspective view of upper fixed handle in Fig. 1 embodiment.

Fig. 3 is the cross-sectional view of upper fixed handle longitudinally axis in Fig. 1 embodiment.

Fig. 4 is the structural representation of lower fixed handle distal side in Fig. 1 embodiment.

Fig. 5 is the cross-sectional view of lower fixed handle longitudinally axis in Fig. 1 embodiment.

Fig. 6 is the side structure schematic diagram of driving shaft in Fig. 1 embodiment.

Fig. 7 is the perspective view of Fig. 1 embodiment middle gear.

Fig. 8 is the side structure schematic diagram of gimbal suspension in Fig. 1 embodiment.

Fig. 9 is the cross-sectional view of Fig. 1 embodiment Intermediate gasket.

Figure 10 is the cross-sectional view of jackscrew in Fig. 1 embodiment.

Figure 11 is the end face structure schematic diagram of nut in Fig. 1 embodiment.

Figure 12 is the end face structure schematic diagram of joint nut in Fig. 1 embodiment.

Figure 13 is the cross-sectional view of joint nut in Fig. 1 embodiment.

Figure 14 is the side structure schematic diagram of extension arm in Fig. 1 embodiment.

Figure 15 is the cross-sectional view of closely-pitched bone screw in Fig. 1 embodiment.

Figure 16 is the cross-sectional view of coarse thread bone screw in Fig. 1 embodiment.

Figure 17 is the structural representation that Fig. 1 embodiment is in using state.

Detailed description of the invention

The Facad structure of an external fixer embodiment of Hip Fracture of the present invention, as shown in Figure 1.The external fixer of this Hip Fracture has upper fixed handle 1, lower fixed handle 2, driving shaft 3, Knucle-gear 4, gimbal suspension 5, pad 61, jackscrew 62, nut 63, joint nut 64, extension arm 7, closely-pitched bone screw 8 and coarse thread bone screw 9 and (waits part.

Please refer to Fig. 2 and Fig. 3: upper fixed handle 1 is in head 11 size much larger than the plate body of bottom 12, and head 11 is a disk; Bottom 12 is vertical bar shape.The bottom 12 of head 11 standing opposite of upper fixed handle 1 proximally rolls tiltedly, and the central authorities of head 11 are provided with gimbal suspension hole, center 113, and in uniform four the gimbal suspension holes 112 of the periphery in gimbal suspension hole, center 113.In other embodiments, the periphery in center gimbal suspension hole 113 at least should arrange two gimbal suspension holes 112.On upper fixed handle 1, each gimbal suspension hole 113,112 arranges the ball-and-socket accepting gimbal suspension 5 bulb 51 near the distal side of head 11 distal surface 111.Each gimbal suspension hole 113,112 arranges taper hole near the proximal lateral of head 11 proximal end face.Upper fixed handle 1 head 11 proximal end face is embossing face 114.The distal side of upper fixed handle 1 bottom 12 is provided with the guide groove 121 along Axis Extension, and has a screw 122 in the bottom of this guide groove 121 near lower end.The bottom of the guide groove 121 of upper fixed handle 1 extends a lug 123 laterally near bottom, this lug 123 has axis hole 124.

Please refer to Fig. 4 and Fig. 5: the bottom 21 of lower fixed handle 2 arranges two gimbal suspension holes 211 by upper and lower order, each gimbal suspension hole 211 arranges ball-and-socket near the distal side of distal surface 22, and each gimbal suspension hole 211 arranges taper hole near the proximal lateral of proximal end face 23.The proximal end face of lower fixed handle 2 bottom 21 is embossing face 23.In lower fixed handle 2, two sides being positioned at distal surface 22, top respectively output a slot to make way 221, so as in lower fixed handle 2, top can insert the guide groove 121 of fixed handle 1 bottom 12.The wall of a slot to make way 221 of lower fixed handle 2 is made as tooth bar 222.

Please refer to Fig. 6: the middle part of driving shaft 3 is the shaft 31 of circular cross-section, and outward flange 32 is established in the side of shaft 31, the outside of outward flange 32 is oblate shank 311; The opposite side of shaft 31 is the gear shaft 33 and the screw rod 34 that have plane 331.

Please refer to Fig. 7, the axis hole 41 of Knucle-gear 4 is corresponding with the gear shaft 33 of driving shaft 3, the plane 331 of the axle 33 that is provided with platform 411 in this axis hole 41 so that clamping driving shaft 3 cogs.

Gimbal suspension 5 one end is the bulb 51 that diameter is larger, and the other end is screw rod 52, that diameter is less, centre bore 53 runs through bulb 51 and screw rod 52; Please refer to Fig. 8.Gimbal suspension 5 has the radial grooving 511 running through bulb 51 for a pair; The bulb 51 of gimbal suspension 5 is divided into four blades by this pair grooving 511.

Please refer to Fig. 9, Figure 10 and Figure 11: the distal face 611 of pad 61 establishes multiple salient point 612.The endoporus 613 of pad 61 is bellmouth.The external screw thread 621 of jackscrew 62 is corresponding with the screw 122 bottom the guide groove 121 of upper fixed handle 1.An end face of jackscrew 62 establishes inner hexagonal hole 622.The periphery 631 of nut 63 is outer six sides, and female thread 632 is corresponding with the screw rod 34 of driving shaft 3.

Please refer to Figure 12 and Figure 13: the periphery 641 of joint nut 64 is outer six sides; The side of joint nut 64 arranges spherical flange 642, and the diameter of the endoporus 643 of this spherical flange 642 is greater than the aperture of joint nut 64 internal thread part 644.

The main body 71 of extension arm 7 is pole, and its one end is the screw rod 72 of reduced, please refer to Figure 14.

Closely-pitched bone screw 8 (being commonly referred to spicule), as shown in figure 15: except tail end 81, entire body establishes closely-pitched bone thread 82, and front end 83 is inwardly punctured into tip.Be provided with through endoporus 84 along axis in spicule 8, establish inner hexagonal hole 85 at tail end; This inner hexagonal hole 85 establishes female thread 86 with the joining place of endoporus 84, and this female thread 86 matches with the screw rod 72 on extension arm 7.

Coarse thread bone screw 9 (being commonly referred to hollow nail), as shown in figure 15: except tail end 91, entire body establishes coarse thread bone thread 82, and front end 93 is inwardly punctured into tip.Be provided with through endoporus 94 along axis in hollow nail 9, establish inner hexagonal hole 95 at tail end, this inner hexagonal hole 95 establishes female thread 96 with the joining place of endoporus 94, and this female thread 96 matches with the screw rod 72 on extension arm 7.

During use, please refer to Fig. 1 and Figure 17: patient body position, be generally dorsal position.Operative incision adopts 4 longitudinal minimal incision *, and with thigh longitudinal axis, the size of otch, can implant hollow nail 9 and spicule 8, obtains surgical field of view clearly and is as the criterion.Then be separated subcutaneous tissue and muscle, expose femur 100.After resetting to fracture end in vitro, maintain reset position, by one piece of hollow nail 9, through fracture site, implanted femur neck 1001, through nail tip is as the criterion apart from Femoral cardlage face 5-10 millimeter.The tail end 91 (operation near-end) of hollow nail 9 is about outer 5 cm of thigh skin.

The tail end 91 of this piece of hollow nail 9 is set with a gimbal suspension 5, and the distal surface 111 of fixed handle 1 head 11 is met to neck of femur 1001.Overlapped together with this gimbal suspension 5 in the gimbal suspension hole, center 113 installing to upper fixed handle 1 head 11 by the tail end 91 of this piece of hollow nail 9, the bulb 51 of this gimbal suspension 5 is inserted in the ball-and-socket in gimbal suspension hole, center 113.Get a pad 61 to be sleeved on the screw rod 52 of this gimbal suspension 5, the embossing face 114 of fixed handle 1 head 11 in salient point 612 contact making this pad 61.Get a joint nut 64 to be sleeved on the screw rod 52 of this gimbal suspension 5, make this joint nut 64 be screwed on the screw rod 52 of this gimbal suspension 5, the spherical flange 642 of this joint nut 64 inserts in the endoporus 613 of this pad 61.

According to fracture situation, another gimbal suspension hole 112 of fixed handle 1 head 11 in selection, and second gimbal suspension, 5, second pad 61 and second joint nut 64 are set in a manner described.Get second hollow nail 9 and enter neck of femur 1001 through the centre drill of second gimbal suspension 5.The two pieces of hole hearts nails 9 entering neck of femur to achieve with upper fixed handle 1 head 11 respectively by respective gimbal suspension 5 and are connected.

For the patient of Therapy of Elder Hip Fracture with osteoporosis, because sclerotin is enough large to the hold of hollow nail 9, hollow nail 9 enters through fracture line the generation that femoral head effectively can prevent coxa vara complication, can reach the strong external fixing of fracture.

Be sleeved in the guide groove 121 of upper fixed handle 1 bottom 12 on the top of lower fixed handle 2, in the axis hole 124 outside the guide groove 121 shaft 31 of driving shaft 3 being inserted in upper fixed handle 1, on driving shaft 3, outward flange 32 heads on the surface, distal side of fixed handle 1 bottom 12.The gear shaft 33 of driving shaft 3 far-end is set with Knucle-gear 4; At this moment, the tooth bar 22 on lower fixed handle 2 engages with the flank of tooth 42 of Knucle-gear 4; Screw togather nut 63 on the screw rod 34 of driving shaft 3 far-end again.

According to the femur length of patient, with the shank 311 of pliers rotating driveshaft 3, make Knucle-gear 4 and driving shaft 3 synchronous axial system, promote lower fixed handle 2 by tooth bar 222 and move relative to the guide groove 121 of upper fixed handle 1, make the gimbal suspension hole 211 on lower fixed handle 2 reach the position of corresponding otch.In a manner mentioned above, a gimbal suspension 5, pad 61 and a joint nut 64 are respectively installed by gimbal suspension hole 211 place on lower fixed handle 2.Make the embossing face 23 on fixed handle 2 under salient point 612 contact of two pads 61.Get two pieces of spicules 8 and be each passed through corresponding gimbal suspension 5, implanted unit backbone 1002, across double-deck cortical bone.Entering two pieces of spicules 8 of femur dry end, being connected by achieving with lower fixed handle 2 through respective gimbal suspension 5 respectively.

Respectively an extension arm 7 is installed at the tail end 91 of every piece of hollow nail 9 and the tail end 81 of every piece of spicule 8.Dial suitable extension arm 7 with large pliers sled and carry out abduction card pressure, the angle that corresponding hollow nail 9 pierces neck of femur can be changed, the entering neck of femur end and can dial to outside upper sled of hollow nail 9, thus make the outside superior displacement of fracture near-end, neck of femur collodiaphyseal angle and top rake are recovered, the reduction of the fracture; Or make lower fixed handle 2 relatively go up fixed handle 1 to slide, the distance between the hollow nail 9 of above fixed handle 1 head 11 and the spicule 8 of lower fixed handle 2 bottom; Both coordinates carries out the reduction of the fracture.After satisfaction, locking nut 63, is fixed on the bottom 12 of upper fixed handle 2 by driving shaft 3 and Knucle-gear 4; In the screw 122 of upper fixed handle 1 bottom 12, jackscrew 62 is installed, by jackscrew 62, lower fixed handle 2 is fixed in the guide groove 121 of upper fixed handle 1.Lock each joint screw 64, the bulb 51 of gimbal suspension 5 applies the active force of extruding for the ball-and-socket in corresponding gimbal suspension hole 112,113,211, gimbal suspension 5 is by the locking of the pad 61 on screw rod 52 and nut 63, oneself is firmly fixed on upper fixed handle 1 head 11 or lower fixed handle 2, and the spicule 8 in each blade of its bulb 51 or hollow nail 9 are clamped.Thus the locking setting angle of gimbal suspension 5 on upper fixed handle 1 head 11 or lower fixed handle 2, that is lock the angle that corresponding spicule 8 or hollow nail 9 pierce femur; And make the spicule 8 clamped by the clamping of each blade or the hollow nail 9 of the bulb 51 of gimbal suspension 5, stable fixing each spicule 8 and hollow nail 9.Firmly can maintain the position after the reduction of the fracture, effectively maintain Hip Fracture near-end in outer exhibition position.This process can repetitive operation in vitro, once find that reduction of the fracture position is unsatisfied with, can adjust immediately, correct in time.Can unclamp jackscrew 62, locking nut 63, each joint screw 64, adjust behind reseting fracture position once again and lock locking nut 63, jackscrew 62 and each joint screw 64, reaching can the effect of the external repetitive operation reduction of the fracture.Then each extension arm 7 is extractd.At utmost prevent the incidence rate of Hip Fracture coxa vara complication.

The above, be only present pre-ferred embodiments, do not limit scope of the invention process with this, and equivalence change and the modification done according to technical scheme of the present invention and description, all should belong to the scope that the present invention is contained.

Claims (6)

1. the external fixer of Hip Fracture, there is the fixed handle that two place fixed bone screw, it is characterized in that: upper fixed handle head wherein at least arranges two gimbal suspensions, each gimbal suspension can change the angle that relatively goes up fixed handle head and place fixes a bone screw; Lower fixed handle bottom wherein at least arranges a gimbal suspension, and this gimbal suspension can change the angle that relatively goes up fixed handle head and place fixes a bone screw; The top of this lower fixed handle is sleeved in the guide groove of fixed handle bottom on this slidably and the jackscrew being arranged on fixed handle bottom on this is fixed in this guide groove; Described gimbal suspension one end is the bulb that diameter is larger, and the other end is the screw rod that diameter is less, and a centre bore wearing bone screw runs through bulb and the screw rod of this gimbal suspension; The bulb of described gimbal suspension is separated into the blade of multiple clamping bone screw by radial grooving; Described upper fixed handle head and described lower fixed handle arrange gimbal suspension hole respectively, and the distal side in each gimbal suspension hole arranges the ball-and-socket accepting gimbal suspension bulb; The screw rod of a described gimbal suspension passes the gimbal suspension hole on fixed negative winding stem or lower fixed handle and screws togather a joint nut, and the bulb of this gimbal suspension leans the ball-and-socket in this gimbal suspension hole.

2. the external fixer of Hip Fracture according to claim 1, is characterized in that: the distal side of described joint nut arranges spherical flange; Be provided with pad between described joint nut and fixed handle or described lower fixed handle, the endoporus of this pad is the bellmouth of the spherical flange accepting described joint nut.

3. the external fixer of Hip Fracture according to claim 2, is characterized in that: the proximal lateral end face near gimbal suspension hole on the proximal lateral end face of described upper fixed handle head near gimbal suspension hole and described lower fixed handle is embossing face; The distal side end face of described pad establishes multiple salient point; Embossing face on the fixed handle of salient point contact of described pad or the embossing face on described lower fixed handle.

4. the external fixer of Hip Fracture according to claim 3, it is characterized in that: fixed handle is the plate body of head sizes much larger than bottom, on this, the bottom of the head standing opposite of fixed handle proximally rolls tiltedly, on this, the head central authorities of fixed handle are provided with gimbal suspension hole, center, and the periphery in gimbal suspension hole, Bing Gai center arranges at least two gimbal suspension holes.

5. the external fixer of the Hip Fracture according to claim 1 or 2 or 3 or 4, is characterized in that: establish axis hole outside the guide groove of fixed handle and pivot joint driving shaft, the distal side of this driving shaft be set with one with the Knucle-gear of this driving shaft synchronous axial system; Described lower fixed handle arranges tooth bar on the side of this Knucle-gear, and this tooth bar engages with this Knucle-gear; The distal side of this driving shaft is established screw rod and is screwed togather a nut, and this driving shaft and this Knucle-gear to be fixed on this on fixed handle by this nut.

6. the external fixer of the Hip Fracture according to claim 1 or 2 or 3 or 4, it is characterized in that: in described bone screw, be provided with through endoporus along axis, establish inner hexagonal hole at tail end, the joining place of this inner hexagonal hole and this endoporus establishes female thread, and this female thread is spirally connected the extension arm arranged in addition.