CN100376219C - Spine fixing apparatus - Google Patents
Spine fixing apparatus Download PDFInfo
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- CN100376219C CN100376219C CNB991094581A CN99109458A CN100376219C CN 100376219 C CN100376219 C CN 100376219C CN B991094581 A CNB991094581 A CN B991094581A CN 99109458 A CN99109458 A CN 99109458A CN 100376219 C CN100376219 C CN 100376219C
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Abstract
The present invention relates to an apparatus for fixing the spine, and particularly to a spine fixing apparatus for fixing an unstable spine, caused by a fracture or a disease, to be properly collaborated together such that the spine can recover its stable state. The present invention provides a spine fixing apparatus, comprising a plurality of spine screw members combined to the spine with a certain distance; a pair of rods detachably combined to the spine screw members, the rods connecting and supporting the spine screw members; pressing members detachably combined to the spine screw members, the pressing member pressing the rod toward the spine screw member; and a connecting device integrally combined to the pressing member, the connecting device flexibly connecting the spine screw members.
Description
The present invention relates to the fixedly device of vertebra, particularly relate to the device of the fixing unsettled vertebra that causes because of fracture or disease, spinal column correctly is joined together, thereby makes vertebra recover its steady statue.
Vertebra provides main intensity for supporting human body, so should be fixed during because of fracture or disease instability when vertebra.For fixing vertebra, the method that has had some to adopt single supporting member or integrally be fixed up with the key screw vertebra.
Integrally fixedly in the method for vertebra, on certain distance, screw and vertebra are connected, longitudinally screw is coupled together with a fixed bar.In addition, a push pedal is installed on screw, can be connected screw with fixed bar by pushing push pedal.For being connected and fixed bar, also connector can be installed between fixed bar.
Screw comprises the threaded portion and the head that is connected with fixed bar that connects with vertebra, forms cervical region between threaded portion and head.
Therefore, in the spinal fixing device of routine, screw and fixed bar integrally combine, and fixed bar also uses connector therebetween integrally to link together.In addition, in order to push and to be connected and fixed bar to screw, push pedal is separated from connector.
But because the direction that can not indiscriminately ad. as one wishes regulate connector, conventional spinal fixing device is not enough to spinal fixation correctly.
In addition, conventional spinal fixing device can not be regulated its connection width in addition to change the shortcoming of the distance between fixed bar.
And in the used screw of conventional spinal fixture, the diameter of screw cervical region makes head be easy to fracture less than the diameter of head.
Therefore, design the present invention is intended to overcome above problem.Therefore, an object of the present invention is to provide a kind of fixing unsettled vertebra that causes because of fracture or disease, spinal column is correctly engaged, thereby make vertebra can return to the device of its steady statue.
For achieving the above object, the invention provides a kind of spinal fixing device, it has a plurality of screws that are connected with vertebra at a certain distance; The a pair of fixed bar that removably is connected with the vertebra screw, fixed bar connects and the bearing spinal screw; Detachably be connected to the pressing piece on the vertebra screw, this pressing piece is pressed to the vertebra screw to fixed bar; And the connecting device that is connected with pressing piece integral body, this connecting device connects the vertebra screw flexibly.
In spinal fixing device, the vertebra screw can have: connect the threaded portion of vertebra, the threaded portion is with the screw thread of a constant pitch; The head of hollow comprises insertion and is connected and fixed bar in wherein insertion depression and opening; And be integrally formed in cervical region between head and the threaded portion.
In this spinal fixing device, the diameter of threaded portion upwards increases, and its screw thread is deepened downwards.
This spinal fixing device can further comprise a hollow nut, and it comprises has screw thread to connect the medicated cap body of head on the inner surface; With with the integrally formed hollow cap of medicated cap body, this cap is in extruding covering threaded portion during with pressing piece that the vertebra screw is connected.
In this spinal fixing device, pressing piece can comprise: a pushed section, to receive the pressure that thread connection was produced of nut; With one with the integrally formed portion that exerts pressure in pushed section, fix to be used to fixed bar be exerted pressure from the pressure of pushed section, there is a patchhole in this portion of exerting pressure, head inserts wherein.
In this spinal fixing device, pressing piece can further contain the guiding piece of a guiding nut that forms with certain size on the outer surface of pushed section, when inserting nut in the vertebra screw, makes the combination of nut and vertebra screw that any distortion not take place.
In this spinal fixing device, pressing piece can further contain and is formed on the lip-deep guide groove of the subordinate that exerts pressure, fixed bar slippage when preventing that the portion of exerting pressure from combining with fixed bar.
This spinal fixing device can further contain the labelling that at least one forms on the fixed bar outer surface, can easily find out the degree of crook of fixed bar so from the outside.
In this spinal fixing device, connecting device can further contain and the whole joint portion that is connected of pressing piece; The universal joint that is connected with insertion groove on being formed on the joint portion; Universal joint can freely rotate on all directions; And the connecting rod that is connected with universal joint, this connecting rod is connected the vertebra screw on the head.
This spinal fixing device can further contain a length adjustment device that is connected with connecting rod, to regulate the distance between the joint portion.
In this spinal fixing device, length adjustment device can contain a control agent with through hole, movably inserts connecting rod through control agent; And through being formed on the set bolt of the aperture insertion on the control agent end face, set bolt is fixing with the connecting rod in the certain position insertion through hole.
In this spinal fixing device, pressing piece can comprise: a pushed section, and to receive the pressure that thread connection was produced of nut, this pushed section contacts with nut; One with the exert pressure portion of certain size built in pushed section one end, and this portion of exerting pressure is used to from the pressure of pushed section fixed bar be exerted pressure; And a curved surface that forms at the portion's of exerting pressure one end, it has certain curvature, and this curved surface prevents from fixed bar to take place any conflict when fixed bar is crooked.
For achieving the above object, the present invention also provides a kind of spinal fixing device, has: a plurality ofly be connected supraspinal vertebra screw at a certain distance; The a pair of fixed bar that detachably is connected with the vertebra screw, fixed bar connects and the bearing spinal screw; And a connecting device that detachably is connected with fixed bar, this connecting device is exerted pressure and fixing fixed bar to the vertebra screw, and a pair of fixed bar is coupled together.
In this spinal fixing device, connecting device can contain the hook-type joint portion that useful bolt etc. detachably is connected with fixed bar, and hook and fixing fixed bar this joint portion; And one and the integrally formed connector in joint portion, in order to connect a pair of fixed bar.
This spinal fixing device can further contain length adjustment device, be used to regulate the connection distance of connector, here, length adjustment device contains the screw thread that is formed on the connector outer surface, and the length adjustment piece that screw hole is all arranged at two ends, wherein insert connector.
In this spinal fixing device, on the outer surface of length adjustment piece, form at least one holddown groove, and by using holddown groove, the screw hole pressurized of the screw thread of connector and length adjustment piece, and therefore connection securely.
In this spinal fixing device, connector is made as the arc that has certain curvature, makes that the vertebra between the vertebra screw does not hinder connector.
For achieving the above object, the present invention also further provides a kind of spinal fixing device, has: a plurality ofly be connected supraspinal vertebra screw at a certain distance; The a pair of fixed bar that detachably is connected with the vertebra screw, fixed bar connects and the bearing spinal screw; The pressing piece that detachably connects the vertebra screw, this pressing piece is pressed to the vertebra screw to fixed bar; With a connecting device that detachably is connected, in order to regulate the distance between the fixed bar with a pair of fixed bar.
In this spinal fixing device, connecting device can contain: first connector that is connected with a fixed bar detachably, and this first connector has an extension; And second connector that detachably is connected with another root fixed bar, this second connector has one and goes up extension and a lower extension, here the extension of first connector is inserted between the last extension and lower extension of second connector, and the width that injects is controllable.
In this spinal fixing device, first and second connectors comprise at least one fixed screw, wherein first connector has an opening that vertically forms on extension, and the through hole that second connector has at least one to form on upper and lower extension with certain size; Wherein, fixed screw couples together the extension of first and second connectors through the opening of first connector and the through hole of second connector; And fixed screw can move in the opening of first connector here.
In this spinal fixing device, the through hole of the last extension of second connector is not screwed in fixed screw, but the through hole of lower extension is screwed in screw with fixed screw.
In this spinal fixing device, first and second connectors can comprise near the fixed screw the fixed bar, are used for extruding and reach fixedly fixed bar; Wherein fixed screw is with the oblique fixed bar of certain angle.
Read detailed description given below and be easy to more be expressly understood these purposes of the present invention and other advantage.Yet, be to be understood that, detailed explanation and instantiation, although proposed the preferred embodiments of the invention, but only provide in the mode of demonstrating, because those skilled in the art can be clear from this this detail specifications, within the spirit and scope of the present invention variations and modifications can be arranged.
Read with reference to the accompanying drawings detailed description of preferred embodiments is easy to more be expressly understood these purposes of the present invention and other advantage.In the accompanying drawing:
Fig. 1 is the front view of the spinal fixing device of first embodiment of the present invention;
Fig. 2 is the decomposition diagram of the spinal fixing device of first embodiment of the present invention;
Fig. 3 is the perspective view of the spinal fixing device of installation first embodiment of the present invention;
Fig. 4 is the sectional view of the spinal fixing device of installation first embodiment of the present invention;
Fig. 5 is the perspective view of the nut of first embodiment of the present invention;
Fig. 6 is the perspective view of the pressing piece of first embodiment of the present invention;
Fig. 7 is the sectional view of the nut of first embodiment of the present invention;
Fig. 8 is the decomposition diagram of the spinal fixing device of second embodiment of the present invention;
Fig. 9 is the perspective view of the spinal fixing device of installation second embodiment of the present invention;
Figure 10 is the side view of the spinal fixing device of the 3rd embodiment of the present invention;
Figure 11 is the sectional view of the spinal fixing device of the 4th embodiment of the present invention;
Figure 12 to Figure 15 is the side view of demonstration expression pressing piece of the present invention;
Figure 16 is the sectional view of the pressing piece of another embodiment of the present invention;
Figure 17 is the side view of the fixed bar of another embodiment of the present invention;
Figure 18 is the perspective view of the spinal fixing device of installation another embodiment of the present invention;
Figure 19 is the perspective view of the spinal fixing device of Figure 18;
Figure 20 is the front view of connecting device of the spinal fixing device of Figure 18;
The front view that Figure 21 has enlarged for the connection width of the connecting device of the spinal fixing device of Figure 18;
Figure 22 is the plane graph of first connecting device of the spinal fixing device of Figure 18;
Figure 23 is the plane graph of second connecting device of the spinal fixing device of Figure 18;
Figure 24 is the front view of second connecting device of the spinal fixing device of Figure 18;
Referring to Fig. 1 to Fig. 4, be depicted as spinal fixing device according to first embodiment of the present invention.Usually, when vertebra 1 because of fracture or disease when unstable, adopt spinal fixing device to fix vertebra 1, to recover its steady statue.As shown in the figure, a plurality of vertebra screws are connected on the vertebra on the position that requires at a certain distance.Vertebra screw 3 forms two rows in a cluster along vertebra 1.The vertebra screw that is fixed on each vertebra 1 detachably is connected with a pair of fixed bar 5.Fixed bar 5 the longitudinal supporting of vertebra 1 be connected vertebra screw 3.On vertebra screw 3, detachably connecting a pressing piece 7.Pressing piece 7 plays a part fixed bar 5 is pressed to vertebra screw 3.Fixed bar 5 along vertebra 1 parallel installation is also interconnection by connecting device 9.In first embodiment of the present invention, connecting device 9 is made one with pressing piece 7.
Vertebra screw 3 comprises and is used for the threaded portion 13 that is connected with vertebra, is used for the head 19 that is connected with fixed bar 5, and between threaded portion 13 and head 19 integrally formed cervical region 21.This moment, screw thread 11 was formed on threaded portion 13 with certain pitch, was formed in the head 19 and insert groove 15, was used for inserting therein fixed bar 5.Head 19 is the open hollow shape in upper end.
Threaded portion 13 preferably has a constant diameter.Preferably the degree of depth of screw thread 11 is more and more darker downwards in addition, thus threaded portion 13 can easily insert in the vertebra 1, make their tight connections.
And pressing piece 7 inserts and connection head 19.Therefore, form a slot 23, be used to insert pressing piece 7 at the inner surface of head 19.Slot 23 is with the certain position of certain deep recess at head 19 inner surfacies.Outer surface at head 19 is shaped on screw thread 25.
Preferably, the diameter of threaded portion 13 and cervical region 21 upwards increases, to increase its intensity.Cervical region 21 also has the rib 27 of bottom to increase its intensity around head 19.
Spinal fixing device of the present invention can further comprise nut 33, is used to connect pressing piece 7 and vertebra connector 3.Nut 33 comprises medicated cap body 30, and screw thread 29 is arranged on its inner surface, to connect the head 19 of vertebra screw 3.Nut 33 also comprises the fixedly cap 31 of vertebra screw 7.The effect that forms cap 31 is to cover head 19 to make it and can not broaden.
Fig. 5 shows is example according to a nut 33 of the present invention.Referring to this figure, nut 33 preferably includes the medicated cap body 30 of a hollow shape, and its inner surface has screw thread 29, makes the length of head 19 of vertebra screw 3 and the thickness of pressing piece 7 can do minimumly.At this moment, the head 19 of vertebra screw 3 can connect by hollow medicated cap body 30.Medicated cap body 30 is preferably made polygon, and the threaded portion 13 of being intended to be easy to vertebra screw 3 connects to advance vertebra 1.
Now,, in cap 31, be formed centrally screw 35, be used to guarantee that one is fixedly advanced vertebra 1 desired space to the threaded portion 19 of vertebra screw 3 when carrying out arthrodesis of spine referring again to Fig. 2 and Fig. 3.Certainly, screw 35 can be made different shapes such as quadrangle or hexagon.
Be preferably in the outer surface embossing of fixed bar 5, thereby pressing piece 7 can be more fixing fixed bar 5.
Although pressing piece 7 shown in Figure 3 is connected with connecting device 9, the present invention is not limited by this figure.For example, Fig. 6 represents a kind of and pressing pieces 7 connecting device 9 disjunct fixedly fixed bars 5.In this example, pressing piece 7 comprises: a columniform pushed section 37, and receiving pressure that being threaded of nut 33 produce and one and the pushed section 37 integrally formed portions 39 that exert pressure, to be used to from the pushed section 37 pressure fixing fixed bar 5.
Referring to Fig. 2, described pushed section 37 is outstanding from an end face of the portion of exerting pressure 39 again.But not limit by above description, an end face that also can make the portion of exerting pressure 39 is as pushed section 37.
On the rear surface of the portion of exerting pressure 39, can make a guide groove 41 with the depression of fixed bar 5 same curvature.The guide groove of formation and fixed bar 5 same curvature, contact area strengthened when the portion of exerting pressure 39 was connected with fixed bar 5, and prevented to skid between portion of exerting pressure 39 and the fixed bar 5.
Can in the aperture 48 that is formed at connecting portion 43, establish control bolt 49.Control bolt 49 can be regulated the degree of engagement that is installed in the universal joint in the joint portion 43.
For fixing tightly, be preferably in the outer surface embossing of connecting rod 47 with control bolt 49.
The present invention can further comprise a length adjustment device 51 that is installed on the connecting rod 47, to regulate the distance between the connecting portion 43.At this moment, length adjustment device 51 according to vertebra screw 3 that vertebra 1 is connected between the joint portion 43 of distance adjustment connecting device 9 between distance.
As shown in Figure 2, pressing piece 7 can separate with nut 33, also can form whole with nut 33 as shown in Figure 7.Under the latter event, forming whole pressing piece 7 with nut 33 can be by fixing the screw thread 25 of vertebra screw 3 with medicated cap 59 extrusion fixed bars 5.
The preferably projection lower end that must be longer than cap 61 of portion 63 of exerting pressure, with fixing fixed bar 5 tightly, and preferably at its embossed surface.
Can make a screw 65 at the central part of cap 61, to guarantee in arthrodesis of spine, having a threaded portion 13 to be fixed to desired space on the vertebra 1 vertebra screw 3.
In addition, on the head 19 of the outer surface of nut 33 and vertebra screw 3, form tick lables 67,69, make that they can not mix up mutually when connecting head 19 and nut 33, but be easy to connect. Tick lables 67,69 is pointed out their screw thread starting point respectively.
The following describes the operation of the spinal fixing device of the present invention of said structure.
When vertebra 1 because of fracture or disease when unstable, use the fixedly l fraction of vertebra 1 of spinal fixing device of the present invention.At this moment, vertebra 1 is connected with the threaded portion 13 of vertebra screw 3, and the joint portion 43 and the connecting rod 43 of the head 19 of vertebra screw 3 by connecting device 9 couples together.In addition, fixed bar 5 inserts in the slot 15 of head 19, makes it be subjected to the extruding of the portion of exerting pressure 39, and the latter also is subjected to the extruding of pushed section 37.Head 19 also is subjected to the extruding of the portion that exerts pressure 37 of the screw thread 29 of nut 33 and pressing piece 7.
In addition, although the threaded portion 13 of vertebra screw 3 is not parallel but with what to a certain degree tilt, the universal joint 45 of connecting device 9 makes it to react neatly, the threaded portion 13 of vertebra screw 3 can be fixing aptly according to the various angle difference of vertebra 1 as a result.
At this moment the distance between the joint portion 43 of connecting device 9 can be regulated as described below according to the distance between the vertebra screw 3 that connects vertebra 1.At first, unclamp after the gim peg 57 of length adjustment device 51, move and pass the connecting rod 47 of through hole 53 to desired distance.With gim peg 57 connecting rod 47 is fixed on through hole 53 then, makes the distance between the joint portion 43 be easy to regulate.
Can also regulate the degree of engagement of universal joint 45 by Spin Control bolt 49.
Fig. 8 and Figure 9 shows that second embodiment of the present invention.As shown in the figure, in the spinal fixing device according to second embodiment of the invention, a plurality of vertebra screws 3 are connected on the certain position of vertebra.Vertebra screw 3 forms two rows in a cluster along vertebra 1, and is identical with first embodiment.The vertebra screw 3 that is fixed on the vertebra 1 detachably is connected with a pair of fixed bar 5, and fixed bar 5 is along vertebra 1 supporting and be connected vertebra screw 3.A pair of fixed bar 5 along vertebra 1 parallel installation is also interconnection by a connecting device 71.At this moment, connecting device 71 detachably is connected with fixed bar 5, extrudes and fixes fixed bar 5 to vertebra screw 3 simultaneously.
Connecting device 71 comprises: a hook-type conjunction 73 and the connector 75 that another fixed bar of fixed bar 5 and adjacency is coupled together that hooks and be connected and fixed bar 5.At this moment, connecting device 71 detachably is connected with fixed bar 5 by the part of tightening latch and so on.Connector 75 stretches out and is connected as a single entity with conjunction 73 from conjunction 73.
Preferably, between the screw 81 of length adjustment piece 83, keep certain space, connect distance to regulate.
In second embodiment of the invention, there be not the identical of the part described and first embodiment, so no longer mention them.
Figure 10 represents the 3rd embodiment of the present invention, and it is identical with second embodiment except that following explanation.
On the outer surface of above-mentioned length adjustment piece 83, form at least one holddown groove 85.Need holddown groove 85 connector 75 being connected back extrusion screw thread 79 with length adjustment piece 83, the screw thread between the screw 81 of the screw thread 79 of connector 75 and length adjustment piece 83 is in conjunction with fixing better like this.
At this moment, holddown groove 85 preferably has semi-circular shape, with the screw 81 of extruding easily and tightly, and preferably separates with length adjustment piece 83.
For this reason, connector 75 with after length adjustment piece 83 is connected, can utilize independent instrument to push holddown groove 85.Then, by pushing the power of holddown groove 85, extruding screw 81 and the screw thread below holddown groove 85 79 make the connection between screw thread 79 and the screw 81 tightr.
Figure 11 represents the 4th embodiment of the present invention, and it is identical with second embodiment except that following explanation.
When connector 75 was connected with length adjustment device 77, connector 75 is made for had an arc that makes progress from the conjunction 73 that is connected with fixed bar 5, and vertebra 1 is placed between a pair of fixed bar 5 by curved path.Therefore vertebra 1 is not subjected to the obstruction of connector 75.
Figure 12 to Figure 15 represents the various embodiments of pressing piece 7 of the present invention.
See figure, pressing piece 7 comprises: 87, one of pushed section that are used to receive the pressure that nut 33 produces utilizes the portion that exerts pressure 89 of this pressure extrusion fixed bar 5 and one to be used to prevent that fixed bar 5 is when bending and the curved surface 91 that clashes of fixed bar.Pushed section 87 contacts with nut 33 by being threaded, and receives the pressure from nut 33.Exerting pressure, an end of 89 stretches out with extruding fixed bar 5 from the pushed section with certain size in portion 89.The curved surface 91 that forms at an end of the portion of exerting pressure 89 is for having the circle of a certain curvature.
Preferably there is wideer zone pushed section 87 than the portion of exerting pressure 89, to be easy to bear the pressure from nut 33.
As shown in figure 12, can form curved surface 91, make the lower end of pushed section 87 become circle.In addition, as shown in figure 13, when 87 lower end forms an extension from the pushed section, can be below this extension one end formation curved surface 91.As Figure 14 and shown in Figure 15, in the pushed section 87 lower end when both sides all form a extension to certain distance, also can be below this extension one end formation curved surface 91.
The extension that the lower end of curved surface 91 forms both can be shorter than pushed section 87 as shown in figure 14 and also can be longer than pushed section 87 as shown in figure 15.
In such pressing piece 7, the direction of exerting pressure is shown in arrow among Figure 12 to Figure 15.In addition, when fixed bar 5 is subjected to this pressure crooked, forms circular curved surface 91 and can prevent that the pushed section 87 of fixed bar 5 and pressing piece 7 from clashing.
Figure 16 represents another embodiment according to pressing piece 7 of the present invention.What as shown in the figure, pressing piece 7 can comprise a upper end that laterally is formed at pushed section 37 with certain size leads a part 93.Leading a part 93 plays a part to make that to vertebra screw 3 guiding nuts 33 when insertion nut 33 made vertebra screw 3 be connected with nut 33, nut 33 was connected with vertebra screw 3 without any distortion ground.
Lead a part 93 and preferably be shorter than the portion of exerting pressure 39, make pressure to be delivered to the portion of exerting pressure 37 along the direction shown in Figure 16 arrow and be easy to guide nut 33 simultaneously.
Can make a depression that concaves in the lower end of the portion of exerting pressure 39.When connecting rod 5 was connected with pressing piece 7, depression 95 was not slided fixed bar 5.
Then, be depicted as the sign 97 that helps identification fixed bar 5 degree of crook referring to Figure 17.Establish at least one sign 97 at the outer surface of fixed bar 5.Sign 97 preferably forms along the length direction of fixed bar 5, to be easy to from the degree of crook of outside identification fixed bar 5.For example, can only form a sign 97, also can form two signs 97, also can form four signs 97 by 90 degree by 180 degree at the periphery surface of fixed bar.
Figure 18 to Figure 24 represents the spinal fixing device according to another preferred embodiment of the present invention.In this embodiment, detailed explanation is not done in above-mentioned explanation.
See figure, a plurality of vertebra screws are connected on the certain position of vertebra 1 with certain interval.Vertebra screw 3 forms two rows in a cluster along vertebra 1.The vertebra screw that is fixed on the vertebra 1 detachably is connected with a pair of fixed bar 5, and fixed bar 5 vertebra 1 by vertebra screw 3 longitudinal supportings.On vertebra screw 3, detachably connect a pressing piece 7, in order to fixed bar 5 is pressed to vertebra screw 3.Connecting device 100 plays the distance between the adjusting fixed bar 5.The fixed bar of installing along vertebra 15 couples together, and connects width to regulate by connecting device 100.
Referring to Figure 20 to Figure 24, connecting device 100 comprises first connector 110 and second connector 120 substantially.One end of first connector 110 curves inwardly with the part around fixed bar 5, and its other end stretches to another root fixed bar.At this moment, this end of best first connector 110 centers on to such an extent that fixed bar 5 can not separate, and preferably around fixed bar 5 about 180 degree.
In addition, first connector 110 is provided with a fixed screw 112 in the position more inner slightly than the median vertical line of fixed bar 5, is used for extruding and fixing fixed bar 5, and is provided with a through hole 150, and fixed screw penetrates wherein and by threads engage.In this case, fixed screw 112 preferably tilts to fixed bar 5 slightly, and about 5 degree more preferably tilt.In fixed bar 5 contacted, fixed screw 115 also preferably formed circular, and the contact area of increasing and fixed bar is to reach more stable with it connection.
Referring to Figure 20, first connector 110 forms to such an extent that a part the thickest is arranged above fixed bar 5, and attenuation when holding fixed bar 5.At this moment, structurally preferably, the not end that holds first connector 110 of fixed bar 5 stops circularly, because it is beneficial to fixed bar 5 combination with it.In first connector 110, the link position that the thickness above fixed bar 5 remains to fixed screw 112 is constant, and after surpassing this position, rises on its bottom surface, makes through width behind this link position and falls sharply.Have again, its narrowed width that oriented another fixed bars of first connector 110 extend extension 116.
First connector has an opening 118 that vertically forms on extension 116, Figure 22 invading the exterior shows very clearly on the plane of first connector 110.The opening 118 of first connector 110 preferably has 1/3rd width of about extension 116.Preferably the end of opening 118 forms semicircle.
Same position on the upper and lower extension 126,128 of second connector 120 forms through hole 140,142, and via through holes 140,142 couples together fixed screw 130,132.At this moment, do not form screw thread in the through hole 140 of last extension 126, but form screw thread in the through hole 142 of lower extension 128, fixed screw 130,132 can not be screwed on the extension 126 like this, but can be screwed in lower extension 128.Therefore, stubborn fixed screw 130,132 o'clock, last extension 126 kept its invariant positions, and screw 130,132 upwards promotes but lower extension 128 is fixed, and makes the extension 116 of the extension 126,128 of second connector 120 near first connector 110.In this case, the diameter of the through hole 140 of last extension 126 is a bit larger tham the diameter of the through hole 142 of lower extension 128.
In this case, fixed screw 130,132 links together through the opening 118 of first connector 110 and the through hole 140,142 of second connector 120.Therefore, because the opening 118 of first connector 110 is vertically to form, when extension 116,126,128 completely being linked together, can regulate their insertion width by the fixed screw 130,132 that moves the opening 118 that passes first connector 110 with fixed screw 130,132.The adjusting of this insertion width, can easily regulate with following manner, Here it is, and the opening 118 little degree ground of fixed screw 130,132 through first connector are engaged with the lower extension 128 of second connector 120, engages fully after actuator inserts width well again.
Although in the present invention, consider structural stability and convenient for production, adopt two screws, also can adopt one or more fixed screw.
In addition, the width of best first and second connectors 110,120 more greatly, is reducing gradually with fixed bar 5 join domains, and is broadening slightly after holding fixed bar 5 at extension 116,126,128 places.This be try hard to by strengthen between the extension 116,126,128 the junction and with the contact area of fixed bar 5 junctions, make the connecting device rugged construction stable, can allow its width in the relatively little area decreases of stress to certain degree.
More than Gou Zao spinal fixing device according to the present invention has at vertebra and analyses because of bone or relevant disease when unstable, and the connecting device by being connected to the vertebra screw is fixing vertebra correctly, vertebra is returned to the effect of steady statue.
In addition, by utilizing fixed screw connector is screwed in together mutually securely, and is connected and fixed bar tightly with fixed screw, the present invention has the advantage of its structure quite stable.
And it also has owing to be connected with fixed bar with fixed screw, be easy to connector is attached on the fixed bar, and because simplified structure has made things convenient for production and use to wait other advantage.
More than describe in detail according to spinal fixing device of the present invention.Yet, should be appreciated that detailed explanation and instantiation, although proposed the preferred embodiments of the invention, but only provide by way of example, because those skilled in the art can carry out variations and modifications within the spirit and scope of the present invention from these describe in detail.
Claims (3)
1. spinal fixing device comprises:
A plurality ofly be connected supraspinal vertebra screw at a certain distance;
The a pair of fixed bar that detachably is connected with the vertebra screw, this fixed bar connects and the bearing spinal screw;
The pressing piece that detachably connects the vertebra screw, this pressing piece is pressed to the vertebra screw to fixed bar; With
A connecting device that detachably is connected with a pair of fixed bar is in order to regulate the distance between the fixed bar;
It is characterized by, connecting device comprises:
First connector that is connected with a fixed bar detachably, this first connector has an extension; And
Second connector that is connected with another root fixed bar detachably, this second connector have one to go up extension and a lower extension;
Wherein, the extension of first connector is inserted between the last extension and lower extension of second connector, and the width that injects is controllable;
First and second connectors comprise at least one fixed screw;
Wherein, first connector has an opening that vertically forms on extension, and the through hole that second connector has at least one to form on upper and lower extension with certain size;
Fixed screw links together the extension of first and second connectors through the opening of first connector and the through hole of second connector;
And wherein fixed screw is movable in the opening of first connector.
2. the described spinal fixing device of claim 1 is characterized by, and the through hole of the last extension of second connector is not screwed in fixed screw, but the through hole of lower extension is screwed in fixed screw.
3. the described spinal fixing device of claim 1 is characterized by, and first and second connectors comprise near the fixed screw the fixed bar, is used for extruding and reaches fixedly fixed bar;
Wherein fixed screw is with the oblique fixed bar of certain angle.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR19980027070 | 1998-07-06 | ||
| KR27070/1998 | 1998-07-06 | ||
| KR27070/98 | 1998-07-06 | ||
| KR48554/98 | 1998-11-13 | ||
| KR48554/1998 | 1998-11-13 | ||
| KR25051/99 | 1999-06-28 | ||
| KR25051/1999 | 1999-06-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1240632A CN1240632A (en) | 2000-01-12 |
| CN100376219C true CN100376219C (en) | 2008-03-26 |
Family
ID=5273929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991094581A Expired - Fee Related CN100376219C (en) | 1998-07-06 | 1999-07-06 | Spine fixing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376219C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002349120A1 (en) * | 2001-11-27 | 2003-06-10 | Renishaw Plc | Adjustable device with universal joints |
| CA2664591C (en) * | 2006-09-26 | 2014-12-02 | Synthes Usa, Llc | Transconnector |
| US7976567B2 (en) * | 2006-10-18 | 2011-07-12 | Warsaw Orthopedic, Inc. | Orthopedic revision connector |
| FR2910267B1 (en) * | 2006-12-21 | 2009-01-23 | Ldr Medical Soc Par Actions Si | VERTEBRAL SUPPORT DEVICE |
| CN101347350B (en) * | 2007-07-16 | 2010-07-21 | 叶中权 | External member flexible cable spine fixing apparatus |
| CN107198560B (en) * | 2016-03-16 | 2021-03-09 | 长庚医疗财团法人林口长庚纪念医院 | Spinal column correction device |
| CN106963462A (en) * | 2017-03-23 | 2017-07-21 | 张群 | External fixer for operation on vertebra |
| CN109044589B (en) * | 2018-07-02 | 2021-02-02 | 合肥市第二人民医院 | Orthopedics rehabilitation and nursing is with adjusting fixing device |
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| FR2624720A1 (en) * | 1987-12-21 | 1989-06-23 | Fabrication Materiel Orthopedi | Implant for osteosynthesis device, in particular for the spine |
| EP0452792A1 (en) * | 1990-04-11 | 1991-10-23 | Waldemar Link (GmbH & Co.) | Fixator for bone surgery |
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| CN1092637A (en) * | 1992-11-13 | 1994-09-28 | 苏发莫丹内克集团有限公司 | Be used for engaging apparatus by rear convergence and the waist rumpbone that utilizes the reach of apparatus screw correct spinal |
| DE9314295U1 (en) * | 1993-09-22 | 1995-02-02 | Schaefer Micomed Gmbh | Connector for a bone surgery fixture |
| FR2711909A1 (en) * | 1993-11-02 | 1995-05-12 | Chauvin Jean Luc | Device for straightening and bracing a spinal column |
| US5562663A (en) * | 1995-06-07 | 1996-10-08 | Danek Medical, Inc. | Implant interconnection mechanism |
| US5709684A (en) * | 1995-12-04 | 1998-01-20 | Fastenetix, Llc | Advanced compression locking variable length cross-link device |
| US5725527A (en) * | 1992-09-10 | 1998-03-10 | Biedermann Motech Gmbh | Anchoring member |
| US5752955A (en) * | 1995-10-30 | 1998-05-19 | Fastenetix, L.L.C. | Sliding shaft variable length cross-link device for use with dual rod apparatus |
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|---|---|---|---|---|
| FR2612071A1 (en) * | 1987-03-13 | 1988-09-16 | Cotrel Yves | VERTEBRAL SCREW FOR OSTEOSYNTHESIS DEVICE, ESPECIALLY LUMBAR AND DORSAL |
| FR2624720A1 (en) * | 1987-12-21 | 1989-06-23 | Fabrication Materiel Orthopedi | Implant for osteosynthesis device, in particular for the spine |
| EP0452792A1 (en) * | 1990-04-11 | 1991-10-23 | Waldemar Link (GmbH & Co.) | Fixator for bone surgery |
| US5261907A (en) * | 1991-05-17 | 1993-11-16 | Vignaud Jean L | Interconnecting device able to lock spinal osteosynthesis fasteners |
| US5725527A (en) * | 1992-09-10 | 1998-03-10 | Biedermann Motech Gmbh | Anchoring member |
| CN1092637A (en) * | 1992-11-13 | 1994-09-28 | 苏发莫丹内克集团有限公司 | Be used for engaging apparatus by rear convergence and the waist rumpbone that utilizes the reach of apparatus screw correct spinal |
| DE9314295U1 (en) * | 1993-09-22 | 1995-02-02 | Schaefer Micomed Gmbh | Connector for a bone surgery fixture |
| FR2711909A1 (en) * | 1993-11-02 | 1995-05-12 | Chauvin Jean Luc | Device for straightening and bracing a spinal column |
| US5562663A (en) * | 1995-06-07 | 1996-10-08 | Danek Medical, Inc. | Implant interconnection mechanism |
| US5752955A (en) * | 1995-10-30 | 1998-05-19 | Fastenetix, L.L.C. | Sliding shaft variable length cross-link device for use with dual rod apparatus |
| US5709684A (en) * | 1995-12-04 | 1998-01-20 | Fastenetix, Llc | Advanced compression locking variable length cross-link device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1240632A (en) | 2000-01-12 |
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