CN101516282A

CN101516282A - Orthopedic plate system

Info

Publication number: CN101516282A
Application number: CNA2007800343635A
Authority: CN
Inventors: R·S·毕斯肯普; M·S·威尔德曼; C·G·雷洛克斯
Original assignee: Warsaw Orthopedic Inc
Current assignee: Warsaw Orthopedic Inc
Priority date: 2006-09-18
Filing date: 2007-09-17
Publication date: 2009-08-26
Also published as: WO2008036578A3; KR20090068229A; KR101166614B1; AU2007297420A1; EP2079378A2; WO2008036578A2; JP2010503498A

Abstract

An orthopedic medical apparatus and methods are disclosed, among which are a cylindrical orthopedic plate and clamps and fixation members for attaching the plate to tissue such as bone tissue. In one embodiment, the plate includes sides and ends that are cylindrical, and the clamps are adapted to fit thereto. Additional apparatus in the form of a lateral connecting member and a connecting plate usable with the orthopedic plate are also disclosed. Methods for using the disclosed apparatus are also described.

Description

Orthopedic plate system

Background technology

In art of orthopedic surgery, thereby elongated board or bar can be fixed on the bone and their to be kept and be supported on given position.For example, in the process that merges (fuse) damage vertebra, the surgeon is positioned at vertebra in the correction position as required.Dull and stereotyped (promptly having flat upper and lower lateral plate) is placed on contiguous or against bone, and uses the bone anchor that plate is fixed on the bone.Bone screw or bolt can be used as the bone anchor, and threadably are screwed into the placement that realizes this anchor in the described hole by the one or more holes of brill in (a plurality of) bone and with anchor.Anchor can threadably be screwed in the hole of run-through board, and perhaps plate can be placed in anchor position on every side after threadably being screwed in the hole.Thereby anchor and plate are by the relative motion that prevents fixed to one another.Can keep also with correct calibration like this ,/or support bone with healing.

Other orthopedic systems are used bars to connect the bone anchor and stability for the tissue of for example vertebra are provided.Thereby such bar can be for example be placed and has profile along vertebra and remains on bone in the desired location and support described bone.

Description of drawings

Fig. 1 is the side view of an embodiment of orthopedic plate system.

Fig. 2 is the vertical view of Fig. 1 embodiment.

Fig. 3 is the end-view of Fig. 1 embodiment.

Fig. 4 is the viewgraph of cross-section of Fig. 1 embodiment of observing along Fig. 2 center line 4-4 intercepting and from the direction of arrow.

Fig. 5 is the viewgraph of cross-section of Fig. 1 embodiment of observing along Fig. 1 center line 5-5 intercepting and from the direction of arrow.

Fig. 6 is the side view of an embodiment of orthopedic plate system.

Fig. 7 is the vertical view of Fig. 6 embodiment.

Fig. 8 is the end-view of Fig. 6 embodiment.

Fig. 9 is the viewgraph of cross-section of Fig. 6 embodiment of observing along Fig. 7 center line 9-9 intercepting and from the direction of arrow.

Figure 10 is the viewgraph of cross-section of Fig. 6 embodiment of observing along Fig. 6 center line 10-10 intercepting and from the direction of arrow.

Figure 11 is the side view of an embodiment of orthopedic plate system.

Figure 12 is the vertical view of Figure 11 embodiment.

Figure 13 is the end-view of Figure 11 embodiment.

Figure 14 is the viewgraph of cross-section of Figure 11 embodiment of observing along Figure 12 center line 14-14 intercepting and from the direction of arrow.

Figure 15 is the viewgraph of cross-section of Figure 11 embodiment of observing along Figure 11 center line 10-10 intercepting and from the direction of arrow.

Figure 16 is the axonometric chart of an embodiment of orthopedic plate system.

Figure 16 A is the axonometric chart that can be used for the equipment of Figure 16 embodiment.

Figure 17 is the axonometric chart of an embodiment of orthopedic plate system.

The specific embodiment

In order to help to understand the principle of disclosure, will describe at the embodiment shown in the accompanying drawings, and language-specific is used to describe same characteristic features.But be to be understood that the scope that is not meant to restriction claim, the related those of skill in the art of present disclosure can expect for this change of described device usually and further improve and for the further application of the principle of disclosure described herein.

General with reference to figure 1-5, an embodiment of plastic surgery's implant system 20 has been described.In this embodiment, implant system 20 comprises board member 22, at least one anchor clamps 24 and is connected to bone fixed component 26 on the anchor clamps 24.Can under the situation that does not deviate from the present disclosure scope, use any these elements of varying number.For example can use each other together with a plurality of board members 22, and depend on size, shape or other structures of board member, medical problem and/or other factors that will be solved, can use additional clamp 24 and bone fixed component 26.

In one embodiment, board member 22 generally is the form of elongated oval shape, and this elongated oval shape has first side or rail 32, second side or rail 34, first end 36 and the second end 38.In described embodiment,

side

32,34 and

end

36,38 limits or around space 40.The length that each

side

32,34 all has between

end

36 and 38, and the

side

32,34 of specific embodiment is straight substantially on its whole length between end 36 and 38.

Side

32,34 further is columniform, and for example the cross section perpendicular to

side

32,34 longitudinal axis is almost circular.Similarly,

end

36 and 38 is substantially cylindricals, and for example the cross section perpendicular to central axis also is almost circular.In described embodiment,

side

32,34 all has the respective diameters that is equal to each other and equals the diameter of end 36,38.Therefore, board member 22 can be counted as and bend to a successive basic ellipse so that the general cylindrical single pole that its end joins.It also can be counted as two parallel circle cylindricality bars and end bent to join each other.Owing to lack turning or material concentration degree, so the cylinder form of

side

32,34 can be so that board member 22 more easily around any axis or crooked under moment of torsion, and need two bars are cut, assemble and operate simultaneously.This also makes it possible to board member 22 is used to be designed the various implants together used with cylindrical bar.Certainly, each lateral diameter can differ from one another and/or be different from the diameter of end, and can carry out other structural change.

An embodiment of anchor clamps 24 can be used to board member 22.The embodiment of the anchor clamps 24 shown in Fig. 1-5 comprises yoke piece 52 and hat member 54.Yoke piece 52 has the top 56 thinner slightly than bottom 58.In specific embodiment, top 56 is become to be of a size of the space 40 that can be inserted into by board member 22, and has threaded portion 60.In specific embodiment, top has the width dimensions of the distance between the closest approach of the side 32 that equals board member 22 substantially and 34.Top 56 also can comprise opening or aperture 62.At least some apertures 62 can comprise that trace (print) or profile 64 (for example, hexagon trace, De Shilong (TORX) trace or similar surfaces) or other modes are so that by tool engagement.In described embodiment, the bottom 58 of yoke piece 52 has chamber 66, the groove 68 and the hypotenuse 70 of 66 open end towards the chamber.Chamber 66 is sized at least a portion of hold bone fixed component (for example member 26), as described further below.Chamber 66 can be communicated with the aperture 62 in top 56, and also can and make surface 72,74 substantially towards board member 22 towards the lateral opening of yoke piece 52.The ring element 76 that illustrates is positioned at groove 68.The inside dimension of ring element 76 is less than the outside dimension of fixed component part in chamber 66 when in groove 68.Ring element 76 can be for the cardinal principle C shape of the structure that is not subjected to stress and its are flat or corrugated substantially, and or its be a bit larger tham the diameter of groove 68, ring element 76 is maintained in the groove 68 like this.Replacedly, ring element 76 can have other structures or characteristic, is for example made by shape-memory material.

The described embodiment of hat member 54 has upper surface 78, can be the inner surface 82 and the extension finger 84 of substantially spherical that its mesopore 80 extends through described upper surface 78.Hat member 54 is become to be of a size of substantially to be fitted in the chamber 66 movably, and ring element 76 can be between hat member 54 and hypotenuse 70 like this.Hole 80 is communicated with chamber 66, and is aligned in the aperture 62 on the top 56 of yoke piece 52 substantially at described embodiment mesopore 80.In described embodiment, the finger 84 of hat member 54 extends across surface 72,74 at least slightly.

Show an embodiment of bone fixed component 26 equally.By and large, the described embodiment of bone fixed component 26 comprises head 90 and thread rod part 94, and described head 90 has for example top about the trace 64 described interior traces 92 that drive.Be spherical substantially on head 90 parts, and comprise and to be one or more ridges 96 of circumference.As mentioned above, head 90 is become to be of a size of to fit in the chamber 66 and by ring element 76 is maintained at this place, and bone fixed component 26 can axially be positioned about yoke piece more than 52 like this.Though when bone fixed component 26 is shown as screw rod in this embodiment, but it can be replaced by the orthopaedic implants or the device of hook or other types.

Nut 100 also is provided in described embodiment.Nut 100 has female thread 102, under shed 104, this under shed 104 can partly be that inclined-plane and part are substantially cylindrical, and nut 100 also can comprise the lower member 106 of widening, and these lower member 106 horizontal expansions are distal to slightly has the upper-part 108 of outerplanar to drive.Upper-part 108 can comprise that different traces or structure are to be used for driving.

In use, anchor clamps 24 and bone fixed component 26 can be connected prior to operation, perhaps for surgeon or other people easily random time be connected.Bone fixed component 26 is inserted on the chambeies 66 or before, hat member 54 is inserted in the chamber 66 of yoke 52.Ring element 76 can be placed in distaff 94 and be inserted into by inclined-plane opening 70 and enter chamber 66.If suitable, ring element 76 can be compressed, for example if C shape member and its are not subjected to the stress diameter greater than chamber 66 diameters, as mentioned above.Ring element 76 enters in the chamber 66 and is placed at least in part in the groove 68.Therefore, described embodiment places 90 of bone fixed component 26 between the ring element 76 and hat member 54 in the chamber 66 of yoke piece 52.

Bone fixed component 26 and anchor clamps 24 are attached to tissue, for example vertebra.In one embodiment, can in vertebra, bore the hole that a size is suitable for bone fixed component 26.Threaded rod 94 is inserted in the hole, and the come of age hole 80 of member 54, the aperture 62 that the instrument (not shown) that has the suitable configurations tip in one embodiment is inserted into trace 92 and also is inserted into yoke piece 52 when being passed in bone fixed component 26 and anchor clamps 24 pre-assembled, thereby and be rotated bar 94 screw threads are screwed in the bone.When bar 94 is screwed in the bone when arriving desired depth by screw thread, instrument is removed from yoke piece 52.Thereby anchor clamps 24 can be rotated also around 90 of bone fixed component 26/or rotate and arrive a relative position according to surgical needs.

Be inserted through the space 40 of board member 22 afterwards by top 56, thereby board member 22 is placed on the anchor clamps 24 yoke piece 52.The

side

32,34 of board member 22 can be in abutting connection with the finger 84 of hat member 54.According to surgical needs, can adjust board member 22 with respect to anchor clamps 24, and/or can adjust the combination of board member 22 and anchor clamps 24 with respect to bone fixed component 26.Nut 100 is screwed to by screw thread on the top 56 of yoke piece 52 and is fastened against board member 22.Fastening nut 100 is pressed to hat member 54 with board member 22, and bone fixed component 26 is clamped between the surface 82 and ring element 76 of hat member 54.

Be understandable that another anchor clamps 24 and bone fixed component 26 can be placed in its hetero-organization of adjacent vertebrae for example, and are connected board member 22 substantially as mentioned above.Additionally or selectively, the bone implant of other types or orthopedic device can be connected to adjacent bones or its hetero-organization, perhaps can simplify the type of attachment between the board member 22 and further simplify orthopaedic implants or apparatus.

Board member 22 can together use with nipper, bone fixed component and other implant infrastructures.Among Fig. 6-10 embodiment of some of them anchor clamps 124 and bone fixed component 126.Anchor clamps 124 comprise U-shaped yoke piece 152 that has pair of leg 156 and the base 158 that aperture 162 is wherein arranged.In described embodiment, aperture 162 has flared primary circle taper epimere 164a and hypomere 164b, this hypomere 164b also can be conical substantially and flared or can be substantially spherical or other structures or its combination.Each lower limb 156 forms a depression 165 with base 158.In a specific embodiment, this depression 165 is crooked and its radius of curvature equals the radius of the

side

32,34 of board member 22 substantially.Shown in this embodiment, thereby the recessed in one embodiment 165 lateral quadrants that are slightly smaller than contiguous or adjacent plate member 22 more easily place board member 22 yoke piece 152 other.Be a bit larger tham among the embodiment of quadrant recessed 164 contiguous or adjacent plate members 22 lateral, yoke piece 152 can block to be stung on the

side

32,34 of board member 22, and perhaps in the

end

36,38 is inserted between the lower limb 156 and yoke piece 152 can slide into described relative position along board member 22.

Bone fixed component 126 is bolts, and this bolt has the middle head 190 between threaded rod 194 and last threaded portion 195, and wherein this threaded rod 194 is used to connect for example tissue of vertebra.The example of such bolt is disclosed in U.S. Patent No. 6,280,445, and its full content is incorporated this paper into for your guidance.Head 190 can have substantially spherical top 197, and these top 197 adjacency aperture section 164b down also can be rotated with respect to this time aperture section 164b.Last threaded portion 195 comprises the interior trace 199 that is used to drive bone fixed component 126.Can dispose trace 199 with respect to trace 64 and 92 as mentioned above.

Also show nut 200 in this embodiment.Nut 200 is similar to U.S. Patent No. 6,315, and described in 779, the full content of this patent is merged in this paper for your guidance.The described embodiment of nut 200 comprises female thread 202, the following cylindrical skirt 203 that centers under shed 204 and the lower member 206 of widening, and these lower member 206 horizontal expansions are distal to slightly has the upper-part 208 of outerplanar to drive.Upper-part 108 can comprise that different traces or structure are to be used for driving.The bottom side 209 of nut 200 is flared and can is conical substantially.Except that nut 200, packing ring 210 can be provided, and it has bottom side, plane 212, crooked or conical upper side 214 and hole or slit 216, and this hole or slit 216 allow the last threaded portion 195 of bone fixed component 126 to move in a plane at least with respect to packing ring 210.If nut 200 and packing ring 210 use together then can form prefabricated unit, and can dangle or otherwise expand to prevent that nut 200 from coming off and keeping nut 200 simultaneously from packing ring 210 and move and with respect to the ability of packing ring 210 rotation along packing ring 210 in skirt section 203.

In use, can be prior to operation or for surgeon or other people easily during random time, anchor clamps 124 are connected in any one or both in bone fixed component 126 and the board member 22.In one embodiment, bone fixed component 126 is attached to for example tissue of vertebra.For example, can in vertebra, bore the hole that a size is suitable for the threaded rod 194 of bone fixed component 26.Threaded rod 194 is inserted in the hole, thereby and the instrument (not shown) that has the suitable configurations tip in one embodiment be inserted into trace 192 and be rotated afterwards threaded rod 194 screw threads are screwed in the bone.When bar 194 is screwed in the bone when arriving desired depth by screw thread, instrument is removed.

If there is not jockey 124 before, thereby threaded portion extended on the anchor clamps 124 and medial head 190 abutment clip 124 on then anchor clamps 124 were placed on the bone fixed component 126, for example at least in part in orifice part 162b.Anchor clamps 124 can according to surgical needs around 190 rotations of bone fixed component 126 also/or turn to relative position.If board member 22 is not connected to anchor clamps 124 before, then board member 124 can be placed on the bone fixed component 126 and adjacent gripper 124.In this position, the

side

32,34 of board member 22 is positioned at the recessed 165 of anchor clamps 124 at least in part, and the last threaded portion 195 of bone fixed component 126 extends through the space 40 of board member 22.

Can be according to surgical needs, at least by rotating bone fixed component 126, thereby adjust board member 22 and anchor clamps 124 with respect to bone fixed component 126 along the plane of slit 216 and/or the length of board member 22.Nut 200 and packing ring 210 are placed on the last threaded portion 195 of bone fixed component 126, thereby and nut 200 twisted downwards and be tightened by screw thread packing ring 210 is pressed to board member 22.Fastening nut 100 also spurs bone fixed component 126, and thereby it 190 presses to board member 22 with anchor clamps 124, thereby latch-up structure.Be understandable that, can not using packing ring 210 or use and use nut 200 under the situation of different packing rings.Will be further appreciated that in other embodiments for example having or do not have, the nut 100 or the other types nut of the packing ring of packing ring 210 can together use with fixed component 126.For example, can provide nut as nut 200 ' (Figure 11-15) with basic flat bottom.Use nut 200 for example ' nut come lockplate member 22, anchor clamps 124 and bone fixed component 126 can limit substantially or stop bone fixed component 126 with respect to the plane of anchor clamps 124 and board member 22 or multiaxis to the location.

Can be as providing optional feature or tool kit separately for embodiment among above-mentioned or other embodiment.For example, shown in Figure 16-17, the transverse connection 300 connecting plate members 22 that illustrate.Connector 300 comprises connecting elements 302, post 304 and nut 306.Connecting elements 302 comprises bulk portion 308, this bulk portion 308 has first opening 310 that runs through wherein to hold part slender member (for example plastic surgery's rod R) at least, this bulk portion 308 also has second opening 312 and is screwed into the dog screw (not shown) to be used for screw thread, and this dog screw is with respect to block parts 308 locking slender member R.Connecting elements 302 further comprises from the extension 316 that bulk portion 308 laterally extends, and extension 316 is basically perpendicular to the surface of bulk portion 308 in specific embodiment.In described embodiment, a side of extension 316 comprises two recessed 318, described recessed 318 diameters that can have the substantially cylindrical shape and can have the diameter of basic

identical side

32,34 in board member 22.Recessed 318 are used to hold at least a portion of the

side

32,34 of board member 22, and in one embodiment, the

respective side

32,34 of recessed 318 wall contact plate member 22.As shown in the embodiment of Figure 16-17, recessed 318 in extension 316 reality dorsad on the side of bulk portion 308 and slender member R.Be understandable that recessed 318 can be on any side of extension 316.The extension of running through between recessed 318 316 provides a hole.

In described embodiment, post 304 comprises the main body 320 that has substantially cylindrical top 322 and lower flange 324.Top 322 can have screw thread and comprise trace 326, and for example interior hexagon of this trace 326, De Shilong shape or other structures are to hold instrument.Flange 324 laterally extends from main body 320 substantially, but it can extend or extend around whole circumferences of main body 320 around other parts of main body 320 circumferences.In specific embodiment, flange 324 has end 328, and this end 328 is in the tilted angle with respect to other parts of flange 324, and can be planar substantially, can form the part spherical surface or can be other structures.Further describe as following, flange 324 is sized to small part end 328 part of

side

32,34 that can adjacent plate member 22.Nut 306 be female thread and become size to become to be screwed on the top 322 of post 304 by screw thread.

Can connector 300 be connected in board member 22 the surgeon at one's leisure prior to operation or in operation process.Extension 316 be placed on the board member 22 or under, like this

side

32,34 of board member 22 at least in part extension 316 recessed 318 in.The top 322 of post 304 is inserted into space 40 and the hole 319 of passing board member 22, like this end 328 vicinities of flange 324 or the

side

32,34 of adjacent plate member 22.Nut 306 is screwed on the extension 316 also fastening against extension 316 (in described embodiment) by screw thread, thereby board member 22 is locked between extension 316 and the flange 324.Selectively, connector 300 can be connected following (promptly in contrast to shown in Figure 16-17) of board member 22, and nut 306 directly contact plate member 22 and flange 324 in abutting connection with the extension 316.Board member 22 can be locked between nut 306 and the flange 324.Before or after connector 300 was connected to board member 22, for example the slender member R of spine rod was inserted in the bulk portion 308 and by the dog screw (not shown) and locks.

Another equipment that can be connected to board member 22 is additional connections or stabilizing member, for example embodiment of the connecting plate shown in Figure 16 400.In this embodiment, connecting plate 400 comprise be used to be attached to the linking portion 402 on the board member 22 and be used to be connected to its hetero-organization or device (for example rumpbone or implant equipment in the rumpbone) on plate portion 404.Linking portion 402 comprises perforation hole 406 and perforation slit 408 wherein wherein, and wherein slit 408 is positioned at the plane of the axis that is basically perpendicular to hole 406.Slit 408 is enough wide to allow board member 22 to pass therethrough, and the space 40 of board member 22 and hole 406 are communicated with like this.If hole 406 is female threads, then can provide dog screw 409 relative board member 22 locking linking portions 402.Selectively, whether pore 406 is not screw threads, all can provide post 304 and nut 306 and in order to respect to board member 22 locking linking portions 402, basic as top description about connecting elements 300 and board member 22.

In described embodiment, plate portion 404 has at least one hole 410 of running through wherein, and this hole 410 is suitable for holding the bone screw in implanted rumpbone or other bone, perhaps can be suitable for holding the orthopaedic implants or the apparatus of other types.In the embodiment of Figure 16, two bone screw 412 extend through one or more holes 410.Be understandable that, the bone screw of passing plate portion 404 is provided, and for dog screw provides the separate threads hole, thereby the head of the head of this dog screw and bone screw overlaps prevent becoming flexible or preventing from bone screw is pulled out of bone screw from bone.Plate portion 303 and linking portion 402 are directed relative to each other to guarantee certain orthopedic correction operation or anatomy set.For example, the described embodiment of connecting plate 400 shows not and 402 one-tenth planar plate portions 404 of linking portion, and forms the obtuse angle betwixt.Such structure is favourable when together using with the board member 22 that is connected to lower lumbar spine or sacral (for example L5 or S1), and wherein the surgeon also wishes laterally to be connected to rumpbone or other bone.Angle between linking portion 402 and the plate portion 404 can change (by crooked connecting plate 400 or the connecting plate 400 by various angles are provided) in tool kit, thereby satisfies anatomical conditions or patient's needs the biglyyest.In other embodiments, thus but plate portion 404 can become the plane relative to each other substantially with linking portion 402, can twist them and do not become plane a public longitudinal axis or otherwise configuration.

Can work as the surgeon at one's leisure,, connecting plate 400 is connected to plate 22 before the surgical operation or during surgical procedures.According to surgical needs, the

end

36 or 38 of board member 22 is inserted into the slit 408 that passes linking portion 402, and connecting plate 400 is placed on the board member 22 like this.When hole 406 had screw thread and screw 409 is provided, screw 409 threadably was screwed in the hole 406 and against board member 22, thereby board member 22 is pressed to linking portion 402 so that they are locked onto together.If use post 304 and nut 306, then the top 322 of post 304 is inserted into the hole 406 of passing linking portion 402 and the space 40 of passing board member 22, and flange 324 is close to or in abutting connection with linking portion 402 like this, and extend from linking portion 402 on top 322.Nut 306 threadably is screwed on the post 304 and is tightened against linking portion 402, thereby extruding slit 408 is to be locked in board member 22 wherein.Selectively, hole 406 and/or flange 324 can be become the size car to make flange 324 can adaptively pass through to end 328 vicinities of small part hole 406 and flange 324 or the

side

32,34 of adjacent plate member 22.Fastening nut 306 causes board member 22 to be clamped between flange 324 and the linking portion 402 against linking portion 402.Before or after being attached to linking portion 402 on the board member 22, plate portion 404 can be attached on tissue or other implants or the equipment.Yet, under the situation that this board member 22 can move in one or more directions before board member 22 being fixed to bone or its hetero-organization, if at first be connected to tissue or equipment and be connected to board member 22 afterwards, then can use connecting plate 400 more easily by plate portion 404.

Present general reference Figure 17, show the connecting plate 400 that is connected on the board member 22 ' another embodiment.Connecting plate 400 ' basic identical, and many one second plate portion 404a in connecting plate 400.In this embodiment, linking portion 402 is between plate portion 404 and 404a, and plate portion 404a is angled with respect to linking portion 402, and plate portion 404 does not become the plane with 404a but be substantially parallel like this.Plate portion 404a comprises hole 410a, and screw 412a or other implants or device can extend through this hole 410a and for example enter bone.Aspect other that also can in plate portion 404a, find to describe in the above about plate portion 404.

As can be seen, the parts shown in each figure be not limited to its describe or specify embodiment together use, but can be used for other embodiment or be used in combination with other embodiment.Therefore, for example board member 22 can with anchor clamps 24 and and anchor clamps 124 together use, and can be used for anchor clamps 124 about the parts shown in the anchor clamps 24.

The parts of implant system of the present invention can be made into to comprise the form of the tool kit of a plurality of sizes of single part and multiple structure, perhaps are made into to comprise the form of the tool kit of a plurality of sizes of all included in the system of the present invention parts and multiple structure.Such tool kit can comprise, for example, one group has different length and has varying number or a directed slit/or the slender member 22 and/or 100 of boring.Under the situation of slender member 100, tool kit can comprise one group of slender member that has differently curved degree along longitudinal axis 106.Also can be provided in the group of packing ring disclosed herein, bolt, screw and nut.In addition, also can comprise and for example spanner of the parts compatibility of implant system of the present invention or the instrument of screwdriver.

Device of the present invention preferably is made of for example blocky biocompatible materials of rustless steel, titanium, some plastics or other well known materials.

Though in accompanying drawing and above-mentioned explanation, be shown specifically and described the present invention; but it should be considered to schematically and not limit its feature; it should be understood that and only illustrated and described preferred embodiment and all changes and improvements all fall in the of the present invention spiritual scope of required protection.

Claims

1. equipment, it comprises:

Board member, this board member have first and second sides and first and second ends of substantially cylindrical, and described side and described end define enclosed space;

The anchor clamps of contiguous described board member, described anchor clamps have first recessed and described second lateral at least a portion second recessed that be used to hold described board member of described first lateral at least a portion of being used to hold described board member;

Be connected to the bone fixed component on the described anchor clamps; And

Be suitable for described board member is remained to locking component on described anchor clamps and the described bone fixed component.

2. equipment according to claim 1, wherein said anchor clamps comprise yoke piece and hat member, described yoke piece has and extends through described spatial top and have lower surface and pass the bottom in the chamber of described lower surface opening, and described hat member is slidably received within described intracavity and has at least one horizontal expansion finger.

3. equipment according to claim 2, wherein said yoke piece have by described top and the opening that is communicated with described chamber.

4. equipment according to claim 3, wherein said bone fixed component is the bone screw with thread spindle and head, described head has the aperture, wherein tightens workpiece and can extend through the described opening in the described top of described yoke piece and enter in described the described aperture.

5. equipment according to claim 3, wherein said first side have a diameter and described second side has a diameter, and two described diameters are equal substantially.

6. equipment according to claim 5, wherein said end are circular and have a diameter that the described diameter of described end equals described lateral described diameter substantially substantially on cross section.

7. equipment according to claim 2, wherein said first side have a diameter and described second side has a diameter, and in the described diameter at least one is inhomogenous substantially along its respective side.

8. equipment according to claim 1, wherein said clamper component comprises the basic U-shaped member with first lower limb, second lower limb and base portion, described base portion has the hole of running through wherein, wherein limit described first recessedly at least in part, and limit described second recessed at least in part by described second lower limb and described base portion by described first lower limb and described base portion.

9. equipment according to claim 8, wherein said bone fixed component comprises the bolt with first threaded portion, medial head and second threaded portion of being used to be connected on the bone, and wherein said second threaded portion extends through the described hole of described U-shaped member and the described space of described board member.

10. equipment according to claim 9, wherein said locking component comprises nut.

11. equipment according to claim 9, wherein said locking component comprises nuts and washers, and described packing ring is between described nut and described board member.

12. equipment according to claim 1, described second side that described first side of wherein said board member has a diameter and described board member has a diameter, and described first recessedly has the part that its diameter equals the described first lateral described diameter of described board member, and described second recessedly has a part that its diameter equals the described second lateral described diameter of described board member.

13. equipment according to claim 1, it further comprises

Horizontal connecting elements with bulk portion and extension, described bulk portion has and is used to hold first aperture of slender member and is used to hold screw described slender member being locked in second aperture in the described bulk portion, and described extension has the second recessed and hole between described horizontal connecting elements described recessed of first recessed, described second lateral at least a portion of being used to hold described board member of described first lateral at least a portion of being used to hold described board member;

Post member with threaded portion and flange portion, described post member extend through the described hole of the described extension of the described space of described board member and described horizontal connecting elements, the contiguous described board member of described like this flange portion; And

Threadably be screwed to the nut on the described threaded portion of described post member, described so horizontal connecting elements is locked between the described flange portion of described nut and described post member.

14. equipment according to claim 1, it further comprises:

Horizontal connecting elements with linking portion and at least one plate portion, described linking portion has the slit that runs through hole wherein and run through wherein and be basically perpendicular to described hole, the width that described slit has is enough to allow described board member to pass described slit, and described plate portion has and runs through wherein to be suitable for receiving at least one hole of the bone screw that runs through wherein; And

Screw, this screw threadably are screwed in the described hole of described linking portion and against described board member, thereby described linking portion and described board member can be locked in together.

15. equipment according to claim 14, wherein said linking portion is angled with respect to described plate portion.

16. equipment according to claim 1, it further comprises:

Horizontal connecting elements with linking portion and at least one plate portion, described linking portion has the slit that runs through hole wherein and run through wherein and be basically perpendicular to described hole, the width that described slit has is enough to allow described board member to pass described slit, and described plate portion has and runs through wherein to be suitable for receiving at least one hole of the bone screw that runs through wherein;

Post member with threaded portion and flange portion, described post member extend through the described hole of the described linking portion of the described space of described board member and described horizontal connecting elements, the contiguous described board member of described like this flange portion; And

17. an equipment, it comprises:

Board member with the first and second straight sides and curved first and second ends, described first side links to each other with described end and described second side links to each other with described end, described first and second sides are cylindrical on its whole length substantially, and described side and described end qualification enclosed space.

18. equipment according to claim 17, it further comprises:

The anchor clamps of contiguous described board member, described anchor clamps have the second recessed and opening that is used at least a portion of hold bone fixed component of first recessed, described second lateral at least a portion of being used to hold described board member of described first lateral at least a portion of being used to hold described board member.

19. equipment according to claim 18, wherein said anchor clamps comprise yoke piece that is connected on the described board member and the hat member that is positioned at described yoke piece slidably at least in part.

20. equipment according to claim 18, wherein said anchor clamps comprise the U-shaped member, and this U-shaped member has base portion, is limited to the first recessed lower limb of small part described first and is limited to the second recessed lower limb of small part described second with described base portion with described base portion.

21. equipment according to claim 17, it further comprises:

Be connected to the horizontal connecting elements on the described board member, this horizontal connecting elements has bulk portion and extension, described bulk portion has and is used to hold first aperture of slender member and is used to hold screw described slender member is locked in second aperture in the described bulk portion, it is first and second recessed that described extension has, the described first recessed wall, and the described second recessed wall with described second lateral at least a portion of the described board member of contact with described first lateral at least a portion of the described board member of contact.

22. equipment according to claim 21, the described dorsad bulk portion of wherein said recessed cardinal principle.

23. equipment according to claim 21, it further comprises:

Post member with threaded portion and flange portion, described post member extend through the described space and the described extension of described board member, the contiguous described board member of described like this flange portion; And

24. equipment according to claim 17, it further comprises:

Horizontal connecting elements with linking portion and at least one plate portion, described linking portion has the slit that runs through hole wherein and run through wherein and be basically perpendicular to described hole, the width that described slit has is enough to allow described board member to pass described slit, and described plate portion has and runs through wherein to be suitable for receiving at least one hole of the bone screw that runs through wherein.

25. equipment according to claim 24, it comprises that further the described linking portion that is used for described horizontal connecting elements locks onto the equipment on the described board member.