CN209091581U - Knee joint external fixer - Google Patents

Abstract

The utility model discloses a kind of knee joint external fixers, it include: fixing component on a shin bone, fixing component and one bone fixation member under a shin bone, wherein on the shin bone under fixing component and the shin bone between fixing component, it is at least universal connection or support by a main support rod and a support rod, the utility model is made to be adapted to the various angles that High Tibial Osteotomy struts tibial medial according to different patient demands；And in femur fixing component and the shin bone between fixing component, equipped with a joint component, to offset the pressure that femur is applied to medial side of tibial plateau, the joint component, which contains a protrusion, can relatively roll on a stacker of the joint component, slide, to answer knee joint during exercise, the rolling and traversing movement that femur is carried out on tibial plateau, making the utility model is that can be adapted for high tibial osteotomy operation or the operation of knee cartilage tissue repair in the external fixer installed outside patient legs.

Description

Knee joint external fixer

Technical field

The utility model relates to a kind of knee joint external fixers.

Background technique

At present for pathologic changes of knee joint, other than replacing artificial knee joint, high tibial osteotomy operation is also may be selected in sufferer (HTO, High Tibial Osteotomy) or knee cartilage tissue repair operation, to eliminate lesion.

High tibial osteotomy is performed the operation (HTO, High Tibial Osteotomy), is to chamfer shin bone close at upper mounting plate One of joint-cutting simultaneously struts, and to form wedge angle, by changing knee joint power axis, to improve knee joint function, reaches releasing disease Suffer from the lesion of gonalgia.After carrying out high tibial osteotomy operation, by the shin bone after osteotomy usually there are two types of fixed form, one Kind is the fixation device of internally-fixed, usually with integrally formed metal plate interlocking at the both ends for being cut shin bone, and be sewn, Be coated on inside skin, this mode, to it is fixed be metal plate, since it is desired that be implanted in inside tissue, patient in addition to Repulsion etc. is tended to have outside adverse side effects, when occurring any discomfort in recuperation or after fully recovering, patient must receive one again The secondary operation for carrying out dismantling the metal plate, and the fixation device of internally-fixed is shown the shortcomings that high tibial osteotomy is performed the operation.

Other than the fixation device of above-mentioned internally-fixed, high tibial osteotomy operation at present can also be by a kind of outer fixed Fixation device, be fixed, such as Chinese invention patent case CN106420020A, it is postoperative to relate to a kind of Tibial osteotomy Needle external fixer, including sliding locating rod 1, fixing screws 4, wing bolt 2 and sliding sleeve 3；The wherein sliding locating rod 1 Upper/lower terminal is sliding respectively to unify sliding sleeve 3, and is fixed with wing bolt 2 lock in the fixing screws 4 for being cut off shin bone both ends respectively, And the sliding sleeve 3 is fastened in the sliding locating rod 1, to define the wedge angle opened by osteotomy ossa tibiale posterius (A as shown in figure 15 Or A ').Due to the situation overturn at the time of surgery, according to different sufferer tibial plateaus, doctor can be cut the angle at shin bone by opening Spend size, orthotic knee joints axes, if Figure 15 shows, when the distracted wedge angle A at tibial cut, A ' are different, perpendicular to this The vertical line (i.e. the installation site of the sliding locating rod 1) of fixing screws 4 can also change correspondingly, i.e., it is right to change upper and lower two sliding sleeve 3 Positive angle since the sliding locating rod 1 is the metallic rod of a rigidity, and can not be arbitrarily bent, thus can not be adapted to such Angle change causes not installing, this structure is made to be unable to satisfy the demand of different sufferers.

Therefore, have recently disclose it is a kind of applied to high tibial osteotomy operation external fixer be as shown in figure 16 Fixing piece D containing a upper fixing element U and once, upper and lower fixing piece U, the D couple a middleware M respectively with bulb U1, a D1, The angle corresponding relationship of upper and lower fixing piece U, the D and middleware M are adapted to by bulb U1, D1, it is above-mentioned to improve The shortcomings that CN106420020A case, but still have the shortcomings that following:

1. upper fixing element U, middleware M and the lower fixing piece D are slightly in a straight line, shin bone upper mounting plate T1 is born Resultant force F completely along a straight line downwards transmitting, i.e. middleware M only with single the fulcrum i.e. bulb U1 at support upper fixing element U, However sufferer is during rehabilitation is completed in operation, and it is not yet stable by the shin bone tissue of osteotomy, it is cut off, distracted notch is not yet cured Close, sufferer during exercise, weight w can't averagely be applied to everywhere in shin bone upper mounting plate T1, edge this, uneven stress, only By single fulcrum, that is, bulb U1 support, shin bone upper mounting plate T1 is just be easy to cause to generate or be displaced overturning, changes the former knee corrected Joints axes, unfavorable patient recovery, even result in operative failure.

2. limiting to and also can to the needle of fixed tibial since upper and lower fixing piece U, D and middleware M are arranged in a linear In straight line lock on shin bone, shin bone can not be locked in multi-angle, therefore make whole group external fixer more built on the sand.

After sufferer selection imposes the operation of knee cartilage tissue repair, as shown in figure 17, it will usually with one bone fixation Part 7 is fixed on femur F end, is fixed on the end shin bone T with a shin bone fixing piece 8, and with a pivot P connect the femur fixing piece 7 and The shin bone fixing piece 8 is swung although pivot P can provide femur F with shin bone T-phase to centered on pivot P, according to people Body structure, when bending knee, squatting down, not only there is rolling movement in the lower end of femur relative to shin bone, also there is micro sliding forward Movement since the position of pivot P is fixed, and simple rotary motion can only be provided, and can not allow as shown in Figure 17 dotted line Sliding motion is carried out between femur F and shin bone T, therefore, after patient installs external fixer, and can not normally be carried out big angle and be write music Knee or movement of squatting down cause the postoperative great inconvenience in life of sufferer, and showing has improved necessity.

Inventor is disclosed and is applicable to high-order shin shown in the utility model in view of this, be plus give research and innovation The knee joint external fixer that bone bone-culting operation, knee cartilage tissue repair are performed the operation.

Utility model content

The utility model is intended to provide a kind of knee joint external fixer, it may include: fixing component, a shin bone on a shin bone Lower fixing component and one bone fixation member, wherein on the shin bone under fixing component and the shin bone between fixing component, at least by one Main support rod and a support rod connection or support make the utility model be adapted to different high tibial osteotomy operations and strut shin bone The various angles of inside；And in femur fixing component and the shin bone between fixing component, it is equipped with a joint component, is applied with offsetting femur Be added on the pressure of medial side of tibial plateau, the joint component contain a protrusion can on a stacker of the joint component relatively roll, Sliding, to adapt to knee joint during exercise, rolling that femur is carried out on tibial plateau, sliding motion make the utility model can be with The external fixer of institute's device on the outside of patient legs suitable for high tibial osteotomy operation or the operation of knee cartilage tissue repair.

Knee joint external fixer disclosed in the utility model, it may include: fixing component on a shin bone is equipped with multiple solid Determine hole, cuts off nearly shin bone upper mounting plate end and the exposed needle outside human leg above place in shin bone to be fixed on lock respectively (Pin) on, fixing component is equipped with first connecting portion and the second connecting portion positioned at the first connecting portion side on the shin bone；One shin Fixing component under bone is equipped with multiple fixation holes, and to be fixed on lock, in shin bone to cut off tibial bone dry doubling below place exposed respectively On needle (Pin) outside human leg, the top of fixing component under the shin bone is equipped with a third interconnecting piece and is located at third company 4th interconnecting piece of socket part side；One main support rod is anchored on the shin bone and consolidates under the first connecting portion of fixing component and shin bone Between the third interconnecting piece for determining component；And a support rod, it is connected between the second connecting portion and the 4th interconnecting piece.

It is above-mentioned to enable the main support rod be after universal adjustment angle for should at the first connecting portion and the third interconnecting piece First connecting portion, third interconnecting piece are tightly fixed respectively；And the secondary support rod, upper/lower terminal are respectively formed a spherical surface Or tip, accordingly stay on the 4th connection of fixing component under the second connecting portion of fixing component and the shin bone on the shin bone Portion, can in corresponding upper, the 4th interconnecting piece universal its angle of adjustment.

Knee joint external fixer disclosed in the utility model, wherein on the shin bone fixing component first connecting portion, contain There is the pedestal and a fixing seat for being set to fixing component on the shin bone, enable the fixing seat interlocking on the shin bone in fixing component, And hole on one is constituted with the pedestal；The nearly upper end of the main support rod wears spherical bushing on one, and spherical bushing is equipped with one on this Axis hole and an open seam enable spherical bushing on this, can be in the pedestal when fixing seat is not locked at fixing component on the shin bone It is rotated freely in the upper hole constituted with the fixing seat, and the main support rod can be in the axis hole of spherical bushing on this freely Axial displacement, when the fixing seat being enabled to be locked at fixing component on the shin bone, the pedestal and the fixing seat are tightly to fix on this Spherical bushing and the main support rod.

Knee joint external fixer disclosed in the utility model, wherein under the shin bone fixing component third interconnecting piece, contain There is one to be set to the base portion of fixing component and a fixed portions under the shin bone, the fixation portions interlocking is enabled to fix structure under the shin bone On part, and hole is constituted with the base portion；The nearly lower end of the main support rod wears spherical bushing, the lower peripheral surface bushing Equipped with an axis hole and an open seam, enable the lower peripheral surface bushing in fixing component under fixing seat not to be locked to the shin bone, it can be It is rotated freely in the lower hole that the base portion is constituted with the fixation portions, and the main support rod can be in the axis of the lower peripheral surface bushing Freely axial displacement in hole, when the fixing seat being enabled to be locked at fixing component under the shin bone, which is tight with the fixing seat Tightly fix the lower peripheral surface bushing and the main support rod.

Knee joint external fixer disclosed in the utility model, wherein on this spherical bushing and the lower peripheral surface bushing axis hole Wall is equipped with lobe or forms rough surface.

Knee joint external fixer disclosed in the utility model, wherein on the shin bone the respectively fixation hole of fixing component axis Heart line is in being parallel to each other or the axial line of at least two fixation holes is in an angle.The respectively fixation hole of fixing component under the shin bone Axial line is in being parallel to each other or the axial line of at least two fixation holes is in an angle.

Knee joint external fixer disclosed in the utility model, wherein the side of fixing component is further provided on the shin bone All the Knife tool fixation holes.

Knee joint external fixer disclosed in the utility model, wherein the main support rod can be a solid body of rod either Hollow lever；Or enable the main support rod mutually be made of first body of rod and second body of rod, make first body of rod and this second The body of rod can be axially retractable, and is radially compeled to fasten first body of rod and second body of rod by an at least fixed screw；On First body of rod outer rim is stated to be formed with external screw thread and screw togather a packing nut, to compel to fasten second body of rod, with stop this One body of rod and second body of rod are retreated along axial direction.

Knee joint external fixer disclosed in the utility model wherein fixes structure under fixing component and the shin bone on the shin bone The hole wall of the respectively fixation hole of part is equipped with lobe or forms rough surface, enables a packing screw radially lock fixed on the shin bone Under component and the shin bone after the fixation hole of fixing component, the needle can be forced to be closely against on the lobe or rough surface.

Knee joint external fixer disclosed in the utility model, wherein the secondary support rod is mutual by first body of rod and second body of rod Be spirally connected composition, keeps first body of rod and second body of rod axially retractable, and one is wherein radially screwed on first body of rod and is compeled Tight nut is retreated with block resistance first body of rod and second body of rod along axial direction with compeling to fasten first body of rod and second body of rod.

Knee joint external fixer disclosed in the utility model, wherein the femur fixing component is to be equipped with multiple fixations Hole hammers on femur and the exposed needle Pin outside human leg to be fixed on, to move with femur；In the fixed structure of the femur Joint component set between fixing component on part and the shin bone, wherein the first end of the protrusion is to be connected to the femur fixing component (or being connected to fixing component on the shin bone), and its second end is the contact surface to form a cambered surface or spherical surface, and the stacker First end be to be connected to fixing component on the shin bone (or being connected to the femur fixing component), and its second end defines to be formed One continuing surface, so that the second end of the protrusion is resisted against the continuing surface, wherein the area of the continuing surface is enabled to be enough to allow the protrusion Second end roll and sliding；The above-mentioned continuing surface, being can be at a plane, cambered surface or spherical surface, the utility model and not from limit.

Knee joint external fixer disclosed in the utility model, wherein the protrusion of the joint component or stacker are can to distinguish It is integrally formed to be connected on the femur fixing component or shin bone in fixing component；Or it is fixed with screw, bolt interlocking in the femur On component or shin bone in fixing component.

Knee joint external fixer disclosed in the utility model, have the advantages that following characteristics and:

With fixing component on main support rod and the fulcrum support of secondary support rod two shin bone, i.e., with more fulcrum support patient shins The stress of bone upper mounting plate avoids operation ossa tibiale posterius upper mounting plate from generating overturning or displacement, promotes high tibial osteotomy success rate of operation.

Detailed description of the invention

Fig. 1: for the stereogram exploded view of the utility model first embodiment.

Fig. 2: for the stereogram exploded view of the utility model main support rod.

Fig. 3: the planar structure schematic diagram for being Fig. 1 after combination.

Fig. 4: the application state perspective view being mounted on for embodiment illustrated in fig. 1 on patient.

Fig. 5: for the planar structure schematic diagram of Fig. 4.

Fig. 6: for the schematic diagram of the section structure in the direction 6-6 of Fig. 5.

Fig. 7: for the overlooking structure diagram of fixing component on shin bone shown in the utility model.

Fig. 8: for the overlooking structure diagram of fixing component under shin bone shown in the utility model.

Fig. 9: for the fixation hole configurations schematic diagram of fixing component on shin bone shown in the utility model.

Figure 10: for the fixation hole configurations schematic diagram of fixing component under shin bone shown in the utility model.

Figure 11: be applied to high tibial osteotomy operation and the operation of knee cartilage tissue repair for the utility model second Example structure schematic diagram.

Figure 12: bend knee the schematic diagram of movement from Figure 11.

Figure 13: the 3rd embodiment structural schematic diagram of knee cartilage tissue repair operation is only applied to for the utility model.

Figure 14: for the utility model fourth embodiment structural schematic diagram.

Figure 15: for the external fixer schematic diagram of the operation of the first high tibial osteotomy disclosed in the prior art.

Figure 16: for the external fixer schematic diagram of the operation of second of high tibial osteotomy disclosed in the prior art.

Figure 17: for the structural schematic diagram for being used for the external fixer that knee cartilage tissue repair is performed the operation disclosed in the prior art.

Description of symbols:

1 sliding 2 wing bolt of locating rod, 3 sliding sleeve

4 fixing screws, 7 femur fixing piece, 8 shin bone fixing piece

Fixing piece M middleware under U upper fixing element D

The bulb P pivot U1, D1

11 fixation hole of fixing component, 110 axial line on 10 shin bones

Hole in 12 first connecting portion 120 of 111 lobes or rough surface

121 pedestal, 122 fixing seat, 13 second connecting portion

Fixing component under 14 15 packing screw of cutter tool fixation hole, 20 shin bone

21 fixation hole, 210 axial line, 211 lobe or rough surface

Lower 221 base portion of hole of 22 third interconnecting pieces 220

222 fixed 25 packing screws of the 4th interconnecting piece of portions 23

30,30 ' main support rod 30a, 30a ', first body of rod 30b, 30b body of rod of ' second

311 axis hole 311a lobe of spherical bushing or rough surface on 31

312 open seam, 32 lower peripheral surface bushing, 321 axis hole

33 fixed screw of 321a lobe or 322 open seam of rough surface

34 packing nut, 35 elastic material, 40 support rods

41 first body of rod of the upper end the 40a lower end 40b

42 second body of rod, 43 packing nut, 50 femur fixing component

51 fixation hole, 60 joint component, 61 protrusion

611 first end, 612 second end, 62 stacker

621 first end, 622 second end

A1, A2, A3 angle F femur S1, S2, S3 needle

T shin bone T1 shin bone upper mounting plate end T2 backbone

Specific embodiment

The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining the utility model, and cannot solve It is interpreted as limitations of the present invention.

As shown in figures 1-13, the utility model discloses a kind of knee joint external fixers, to open ground device in people It may include: fixing component 10 on a shin bone, fixing component 20 under a shin bone, wherein fixing structure on the shin bone outside body leg Under part 10 and the shin bone between fixing component 20, at least by a main support rod 30 and a connection of support rod 40 or support, make this reality It is adapted to high tibial osteotomy art HTO, High Tibial Osteotomy with novel and is strutted tibial medial according to different sufferers Various angles；And the utility model can further include one bone fixation member 50, in femur fixing component 50 and the shin bone Between upper fixing component 10, it is connected with a joint component 60, to define the spacing between the femur F and diameter bone T, is applied with offsetting femur F The pressure being added on the inside of shin bone T platform, the joint component 60 contain a protrusion 61 and a stacker 62, which can hold in this It relatively rolls, slide on joint chair 62, to adapt to human body knee joint during exercise, rolling that femur is carried out on tibial plateau And traversing movement, so that the utility model is can be adapted for high tibial osteotomy operation or the operation of knee cartilage tissue repair Afterwards, it is installed on outside patient legs.

As shown in figs. 1-7, knee joint external fixer, comprising: fixing component 10 on a shin bone is equipped with multiple fixations Nearly shin bone upper mounting plate end T1 and the exposed needle S1 outside human leg above place are cut off in shin bone to be fixed on lock respectively in hole 11 On, fixing component 10 is equipped with first connecting portion 12 and the second connecting portion 13 positioned at 12 side of first connecting portion on the shin bone； Fixing component 20 under one shin bone is equipped with multiple fixation holes 21, cuts off shin bone below place in shin bone to be fixed on lock respectively On backbone T2 and the exposed needle S2 outside human leg, fixing component 20 is equipped with a third interconnecting piece 22 under the shin bone and be located at should 4th interconnecting piece 23 of 22 side of third interconnecting piece；One main support rod 30, be connected to fixing component 10 on the shin bone first connect Under socket part 12 and shin bone between the third interconnecting piece 22 of fixing component 20；And a support rod 40, structure is fixed on the shin bone Under the second connecting portion 13 of part 10 and the shin bone between the 4th interconnecting piece 23 of fixing component 20.

It is above-mentioned, enable the upper/lower terminal of the main support rod 30 can be ten thousand at the first connecting portion 12 and the third interconnecting piece 22 It is tightly fixed respectively after to adjustment angle for the first connecting portion 12 and the third interconnecting piece 22；The secondary support rod 40 is enabled, Upper/lower terminal 40a, 40b respectively can in corresponding second connecting portion 13 and the 4th interconnecting piece 23 be in universal its angle of adjustment.

The above-mentioned secondary support rod 40, upper/lower terminal 40a, 40b are respectively formed a spherical surface or tip, accordingly to shore In universal on the 4th interconnecting piece 23 of fixing component 20 under the second connecting portion 13 of fixing component 10 on the shin bone and the shin bone Adjust its angle.

As shown in Fig. 1,2,5 or 6, wherein the first connecting portion 12 of fixing component 10 is set to the shin bone containing one on the shin bone The pedestal 121 of upper fixing component 10 and an independent fixing seat 122, enable 122 interlocking of fixing seat in fixing component on the shin bone On 10, and hole 120 on one is constituted with the pedestal 121；The nearly upper end of the main support rod 30 wears spherical bushing 31 on one, on this Spherical bushing 31 is equipped with an axis hole 311 and an open seam 312, enables spherical bushing 31 on this that fixing seat 122 be not locked at this It on shin bone when fixing component 10, can be rotated freely in the upper hole 120 that the pedestal 121 is constituted with the fixing seat 122, and should Main support rod 30 can in the axis hole 311 of spherical bushing 31 on this freely axial displacement, enable the fixing seat 122 be locked at the shin On bone when fixing component 10, the pedestal 121 and the fixing seat 122 are tightly to fix spherical bushing 31 and the main support rod on this 30。

As shown in Fig. 1,2,5 or 6, wherein the third interconnecting piece 22 of fixing component 20 is set to the shin bone containing one under the shin bone The base portion 221 of lower fixing component 20 and an independent fixed portions 222 enable 222 interlocking of fixation portions solid under the shin bone Determine on component 20, and constitutes hole 220 with the base portion 221；The nearly lower end of the main support rod 30 wears spherical bush Set 32, the lower peripheral surface bushing 32 are equipped with an axis hole 321 and an open seam 322, enable the lower peripheral surface bushing 32 that will not fix portions 222 when being locked at fixing component 20 under the shin bone, the lower hole 220 that can be constituted in the base portion 221 and the fixation portions 222 In rotate freely, and the main support rod 30 can in the axis hole 321 of the lower peripheral surface bushing 32 freely axial displacement, enable this fix When portions 222 are locked at fixing component 20 under the shin bone, the base portion 221 and the fixation portions 222 are tightly to fix under this Spherical bushing 32 and the main support rod 30.

As shown in Fig. 2, wherein on this axis hole 311,321 hole walls of spherical bushing 31 and the lower peripheral surface bushing 32 be provided with it is prominent Tooth forms rough surface 311a, 321a and avoids the main support rod 30 on this to engage or be closely against on the main support rod 30 The axis hole 311,321 of spherical bushing 31 and the lower peripheral surface bushing 32 generates axial displacement.

As shown in fig. 7, wherein the axial line 110 of the respectively fixation hole 11 of fixing component 10 is in being parallel to each other on the shin bone Or enabling the axial line 110 of at least two fixation holes 11 is in an included angle A 1.The included angle A 1 is less than 140 degree, such as can be between 15-35 Degree, most preferably 26 degree.

As shown in figure 8, wherein the axial line 210 of the respectively fixation hole 21 of fixing component 20 is in being parallel to each other under the shin bone Or enabling the axial line 210 of at least two fixation holes 21 is in an included angle A 2.The included angle A 2 is less than 140 degree, such as can be between 15-35 Degree, most preferably 22 degree.

As shown in Figure 1, wherein on the shin bone fixing component 10 side, be further provided with all the Knife tool fixation holes 14, To fix one to cut off the accessory that the knife rest of shin bone is not shown out, without additionally setting up osteotomy cutter, to reduce operation Cost.

As shown in Figure 2,6, wherein the main support rod 30 is mutually made of the first body of rod 30a and the second body of rod 30b, and by An at least fixed screw 33 radially compels to fasten first body of rod 30a and second body of rod 30b.The first above-mentioned body of rod 30a It can enable and be screwed together in consistent manner with an external thread section in a screw hole of second body of rod 30b, rotatably to adjust first body of rod The length of 30a and second body of rod 30b, only the utility model is not from the group for limiting first body of rod 30a He second body of rod 30b Conjunction mode.

As shown in Fig. 1,2,6, knee joint external fixer disclosed in the utility model, wherein in the of the main support rod 30 One body of rod 30a outer rim is formed with external screw thread and screws togather a packing nut 34, to compel to fasten second body of rod 30b, to stop First body of rod 30a and second body of rod 30b are retreated along axial direction.

As shown in Figures 9 and 10, wherein on the shin bone under fixing component 10 and the shin bone fixing component 20 the respectively fixation hole 11,21 hole wall is equipped with lobe or forms rough surface 111,211, and a packing screw 15,25 is enabled radially to lock on the shin bone Fixing component 20 and after compressing needle S1, S2 in fixation hole 11,21 under fixing component 10 and the shin bone, will force the needle S1, S2 are closely against on the lobe or rough surface 111,211.Above-mentioned fixation hole 11,21 be along corresponding packing screw 15 or 25, which lock direction, forms a long hole, so that the needle S1, S2 is penetrated corresponding fixation hole 11,21, and compel for packing screw 15 or 25 When tight, the local outer rim of needle S1, S2 can be engaged relatively in the lobe or tight against in the rough surface 111 or 211, make the shin bone Fixing component 20 can be tightly secured on respectively needle S1, S2 under upper fixing component 10 and the shin bone.

As shown in Fig. 1,3,5, wherein the secondary support rod 40 is mutually spirally connected and is formed by first body of rod 41 and second body of rod 42, with The axial length of the secondary support rod 40 axially is adjusted by relative rotation；It wherein can radially further on first body of rod 41 It is screwed with a packing nut 43, to compel to fasten first body of rod 41 and second body of rod 42, with block resistance first body of rod, 41 He Second body of rod 42 is retreated along axial direction.

Knee joint external fixer disclosed in the utility model, wherein the main support rod 30 be can be in a hollow lever, reality The heart is as shown in figure 14, which is to contain the first body of rod 30a ' and the second body of rod 30b ' in an elastic rod, and enabling should First body of rod 30a ' and second body of rod 30b ' are mutually axially socketed, and between first body of rod 30a ' and second body of rod 30b ' The elastic materials such as an elastomeric pad, elastomer block or spring 35 are equipped with, first body of rod 30a ' and second body rod 30b ' are fixed on On shin bone under fixing component 10 and shin bone when fixing component 20,10 He of fixing component on the shin bone can be provided by the elastic material 35 The micro vibration elastic of fixing component 20 under the shin bone, to stimulate bone growth, to promote the recovery speed for being cut off shin bone Degree.

As shown in Figure 11,12, knee joint external fixer disclosed in the utility model, the wherein femur fixing component 50, Multiple fixation holes 51 are equipped with, hammer into femur F and on the needle S3 that is exposed to outside leg to be fixed on, to be moved with femur F, Joint component 60 set between fixing component 10 in the femur fixing component 50 and the shin bone, the wherein first end of the protrusion 61 611 be to be connected to the femur fixing component 50 (or be connected to fixing component on the shin bone not shown go out), and its second end 612 It is that can form the contact surface of a cambered surface or spherical surface, and the first end 621 of the stacker 62 is to be connected to fixing component on the shin bone 10 (or be connected to the femur fixing component not shown go out), and its second end 622 is to form a continuing surface with defining, for this The second end 612 of protrusion 61 is resisted against in 62 second end 622 of stacker, wherein enabling the face of the second end 622 of the stacker 62 Product is enough to allow the second end 612 of the protrusion 61 to roll and sliding, bends knee in human body, in the movement squatted down, the femur is except rotation It still slides forward outside, shown in dotted line as shown in figure 12；The second end 622 of the above-mentioned stacker 62, be can at a plane, cambered surface or Spherical surface, the utility model simultaneously not limit its shape certainly.

Knee joint external fixer disclosed in the utility model, the wherein protrusion 61 of the joint component 60 and stacker 62, It is that can be integrally formed to be connected on the femur fixing component 50 or shin bone in fixing component 10, or with screw or bolt interlocking In the femur fixing component 50 or shin bone in fixing component 10, the utility model simultaneously not limits certainly.

As shown in figure 13, when sufferer only carries out the operation of knee cartilage tissue repair, knee applied by the utility model Joint external fixer, being includes: fixing component 10 on a shin bone, is equipped with multiple fixation holes 11, respectively to be fixed on lock On shin bone T and the exposed needle S1 outside human leg；One bone fixation member 50 is equipped with multiple fixation holes 51, to solid Due to hammering on femur F and the exposed needle S3 outside human leg, to be moved with femur F；And in the femur fixing component 50 The set joint component 60 between fixing component 10 on the shin bone, the joint component 60 contain a protrusion 61 and a stacker 62, The protrusion 61 can relatively be rolled on the stacker 62, be slid；Wherein the first end 611 of the protrusion 61 is to be connected to the femur Fixing component 50 (or be connected to fixing component on the shin bone not shown go out), and its second end 612 be can be formed a cambered surface or The contact surface of spherical surface, and the first end 621 of the stacker 62 is to be connected to fixing component 10 on the shin bone (or to be connected to the stock Bone fixation member is not shown out), and its second end 622 is to form a continuing surface with defining, for the second end 612 of the protrusion 61 It is resisted against in the second end 622 of the stacker 62, wherein 62 second end of stacker, 622 area is enabled to be enough to allow the protrusion 61 Second end 612 roll and sliding.

Knee joint external fixer disclosed in the utility model, have the advantages that following characteristics and；

1. with fixing component 10 on main support rod 30 and the fulcrum support of secondary support rod 40 two shin bone, i.e., with more fulcrum branch The stress for supportting patient's shin bone upper mounting plate T1 avoids operation ossa tibiale posterius upper mounting plate T1 from generating overturning or displacement, promotes high-order shin bone and cuts Osseous surgery success rate.

2. the main support rod 30 and secondary support rod 40 can be under fixing components 10 on the shin bone and the shin bone when installation It can be in universal its angle of adjustment between fixing component 20, and axially retractable can adjust, be cut off with adapting to different patients in the shin bone Place is because strutting different angle A, as shown in figure 4, the angular relationship of required fixation.

3. the fixation hole 11,21 on shin bone under fixing component 10 and shin bone in fixing component 20, distribution corresponds to the shin bone Periphery, so that needle S1 or S2 on shin bone after osteotomy, is made the utility model institute with different angle locking The external fixer of announcement more can firmly position the distracted angle of patient's osteotomy ossa tibiale posterius institute and position.

4. the main support rod 30 can use hollow lever, the weight of entire external fixer is substantially reduced, is suffered from mitigating Person's loading reduces patient's sense of discomfort.

5. when sufferer simultaneously carry out high tibial osteotomy operation with knee cartilage tissue repair perform the operation when, can further by By the joint component 60 between fixing component 10 on femur fixing component 50 and shin bone, stablizes to strut and hold level with both hands on the femur F and shin bone T Spacing between platform, and the joint component 60 is also adapted to femur F and shin bone T generated rolling and sliding motion during exercise Path, the movement for alloing sufferer normally to be squatted, standing.

6. after sufferer shin bone restores, can individually fixing component 20, main support rod 30 and secondary support rod 40 under removal shin bone, After knee cartilage regeneration recovery, then fixing component 10 on removal femur fixing component 50 and shin bone, keep this practical new Type is adapted to different patients selected therapeutic method of surgery and reset condition when treating knee joint illness.

The revealed structure of the utility model or shape can be modified under the spirit or scope for not disobeying the utility model Using, the utility model from be not limited to above embodiment be described in detail based on the embodiments shown in the drawings it is practical Novel structure, feature and effect, the above is only the preferred embodiment of the present invention, but the utility model not with Practical range, all changes in accordance with the concept of the utility model are limited shown in drawing, or be revised as equivalent variations etc. Embodiment is imitated, when not going beyond the spirit of the description and the drawings, should be within the protection scope of the present utility model.

Claims (16)

1. a kind of knee joint external fixer characterized by comprising

Fixing component on one shin bone is equipped with multiple fixation holes, cuts off nearly shin bone above place in shin bone to be fixed on lock respectively On upper mounting plate end and the exposed needle outside human leg, fixing component is equipped with first connecting portion and is located at first company on the shin bone The second connecting portion of socket part side；

Fixing component under one shin bone is equipped with multiple fixation holes, cuts off tibial bone below place in shin bone to be fixed on lock respectively On the exposed needle outside human leg of dry doubling, fixing component is equipped with a third interconnecting piece and is located at the third interconnecting piece under the shin bone 4th interconnecting piece of side；

One main support rod is connected to the third interconnecting piece of fixing component under the first connecting portion of fixing component and shin bone on the shin bone Between；And

Support rod, the 4th interconnecting piece of fixing component under the second connecting portion of fixing component on the shin bone and the shin bone Between.

2. knee joint external fixer as described in claim 1, which is characterized in that the upper/lower terminal of the main support rod is enabled to exist It is tight for the first connecting portion and third interconnecting piece difference after universal adjustment angle at the first connecting portion and the third interconnecting piece Tightly fix.

3. knee joint external fixer as described in claim 1, which is characterized in that enable the secondary support rod, upper/lower terminal point Not in being in universal its angle of adjustment in corresponding second connection and the 4th interconnecting piece.

4. knee joint external fixer as described in claim 1, which is characterized in that the first connection of fixing component on the shin bone The pedestal and an independent fixing seat for being set to fixing component on the shin bone is contained in portion, enables the fixing seat interlocking in solid on the shin bone Determine on component, and constitutes hole on one with the pedestal；The nearly upper end of the main support rod wears spherical bushing on one, spherical bush on this It is arranged with an axis hole and an open seam, enables on this spherical bushing when fixing seat is not locked at fixing component on the shin bone, Rotated freely in the upper hole that the pedestal is constituted with the fixing seat, and the main support rod in the axis hole of spherical bushing on this from By ground axial displacement, when the fixing seat being enabled to be locked at fixing component on the shin bone, which is tightly fixed with the fixing seat Spherical bushing and the main support rod on this.

5. knee joint external fixer as claimed in claim 4, which is characterized in that wherein under the shin bone fixing component third Interconnecting piece contain one be set to the shin bone under fixing component base portion and an independent fixed portions, enable the fixation portions interlocking in Under the shin bone in fixing component, and hole is constituted with the base portion；The nearly lower end of the main support rod wears spherical bush Set, the lower peripheral surface bushing are equipped with an axis hole and an open seam, enable the lower peripheral surface bushing that fixed portions be not locked at the shin bone It when lower fixing component, is rotated freely in the lower hole that the base portion is constituted with the fixation portions, and the main support rod is in this Freely axial displacement in the axis hole of lower peripheral surface bushing, when the fixation portions being enabled to be locked at fixing component under the shin bone, the pedestal Portion and the fixation portions are tightly to fix the lower peripheral surface bushing and the main support rod.

6. knee joint external fixer as claimed in claim 5, which is characterized in that spherical bushing and the lower peripheral surface bushing on this Axis hole wall, be equipped with lobe or formed rough surface.

7. knee joint external fixer as described in claim 1, which is characterized in that on the shin bone fixing component respectively this fix It is in an angle that the axial line in hole, which is in being parallel to each other or enabling the axial line of at least two fixation holes,；Wherein fixing component under the shin bone It is in an angle that respectively the axial line of the fixation hole, which is in being parallel to each other or enabling the axial line of at least two fixation holes,.

8. knee joint external fixer as described in claim 1, which is characterized in that the main support rod is by first body of rod and Bipole body mutually forms, and is radially compeled to fasten first body of rod and second body of rod by an at least fixed screw.

9. knee joint external fixer as claimed in claim 8, which is characterized in that first body of rod outer rim is formed with external screw thread And a packing nut is screwed togather, second body of rod is fastened to compel.

10. knee joint external fixer as described in claim 1, which is characterized in that fix structure under shin bone and the shin bone on this The hole wall of the respectively fixation hole of part is equipped with lobe or forms rough surface.

11. knee joint external fixer as described in claim 1, which is characterized in that the secondary support rod is by first body of rod and second The body of rod is mutually spirally connected composition, wherein a packing nut is radially screwed on first body of rod, to compel to fasten first body of rod With second body of rod, block resistance first body of rod and second body of rod are retreated along axial direction.

12. knee joint external fixer as described in claim 1, which is characterized in that one bone fixation member is further included, The femur fixing component, is equipped with multiple fixation holes, hammers on femur and the exposed needle outside human leg to be fixed on；With And a joint component between fixing component in the femur fixing component and the shin bone, the joint component contain a protrusion and one Stacker, the protrusion can be in relatively rolling or slide on the stacker.

13. knee joint external fixer as described in claim 1, which is characterized in that the main support rod be an elastic rod or in Empty bar.

14. knee joint external fixer as claimed in claim 13, which is characterized in that the main support rod contains first body of rod With second body of rod, first body of rod and the bipole body is enabled mutually axially to be socketed, and is set between first body of rod and second body of rod There are the elastic materials such as an elastomeric pad, elastomer block or spring.

15. a kind of knee joint external fixer characterized by comprising

Fixing component on one shin bone is equipped with multiple fixation holes, respectively to be fixed on lock in shin bone and exposed in human leg On outer needle；

One bone fixation member is equipped with multiple fixation holes, hammers into femur and the exposed needle outside human leg to be fixed on On；And

Set joint component, the joint component contain a protrusion between fixing component in the femur fixing component and the shin bone And a stacker, the protrusion is in relatively rolling or slide on the stacker.

16. the knee joint external fixer as described in claim 12 or 15, which is characterized in that the first end of the protrusion is connection In the femur fixing component or it is connected to fixing component on the shin bone, and its second end forms the contact of a cambered surface or spherical surface Face, and the first end of the stacker is connected to fixing component on the shin bone or is connected to the femur fixing component, and its second End is to form a continuing surface with defining, so that the second end of the protrusion is resisted against in the second end of the stacker, wherein this is enabled to hold The area of joint chair second end is enough that the second end of the protrusion is allowed to roll and slide.