CN1241127A - Pedicle screw system for osteosynthesis - Google Patents
Pedicle screw system for osteosynthesis Download PDFInfo
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- CN1241127A CN1241127A CN 97180855 CN97180855A CN1241127A CN 1241127 A CN1241127 A CN 1241127A CN 97180855 CN97180855 CN 97180855 CN 97180855 A CN97180855 A CN 97180855A CN 1241127 A CN1241127 A CN 1241127A
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Abstract
A kind of pedicle screw system assembly 10 is connected with fixed bar 11 and is used for fixing the bone section.This assembly contains, 34, one dog screws 48 of 20, one pads of 12, one multiaxis seats of a screw and a cup-shaped cover 40.In the time of in screw is inserted multiaxis seat 21, the middle part 18 of the termination of screw 12 and multiaxis seat comes in contact and fixedly advances bone, thereby the multiaxis seat can have the three degree of freedom rotation.Seat comprises the axial post 38 that screw thread is arranged in a pair.Pad 24 places between the termination and fixed bar of screw 12.The bottom has a cover 40 with a coupled columns accommodation hole 43 to cover on the post 38, makes cross-over joint 44 engage fixed bar.Cross-over joint and pad have the recessed semi-cylindrical fixed bar composition surface that is roughly, to prevent fixed bar present internal rotation and slip behind fastening dog screw.In seat pillar, screw in a dog screw 42 fixed bar fixing present in.
Description
Related application
The application is that my series number is 08/771,133, is entitled as " pedicle screw system for osteosynthesis ", and the applying date is the part continuation application of the patent application on October 20th, 1996.
Technical field
The present inventor relates to the medical domain that is commonly referred to osteopathy, i.e. spinal column vertebra immobilization more particularly, relates to and is used between incorporating period the fixedly pedicle screw system of vertebra joint and the assembly of fixed bar.
Technical background
Synthetism is finished by fixing bone.When attempting to finish synthetism, when particularly finishing the immobilization of the different vertebra internodes of spinal column, should carry out certain type fixing.Various technology components are formerly arranged to scheme to reach this purpose.Different systems relates to inserts screw in bone.Fixed bar or plate with different sizes is connected with each other screw then.The bone sections that these couple together especially in spinal column, can have different angles and different medical science side positions.Because center sidesway or the angle that saves at different vertebras are inserted the fixed bar of being with the rigidity screw, it is difficult perhaps putting plate between two rigidity screws.The patient must crooked fixed bar or plate, and will carry out complicated bending for connecting two different bone sections sometimes, particularly in the zones of different of spinal column.In spinal operation, screw is inserted in the vertebral arch usually, and because the diverse location of vertebral arch and the different angles that screw enters vertebral arch, the patient can run into location difficulty and the difficulty that is connected these screws at each point.
Even the patient can create the bending of fixed bar and plate place complexity, to connect on two or plural screw, some position patient has the probability that runs into the rising of difference stress in vertebral arch, and can not flawlessly run into the disruptive probability of system owing to crooked.
A kind ofly can rod adjustment not produced the raise screw assembly in zone of any appreciable stress to appropriate position and can relax above-mentioned some problem.It is crooked to reach fixing between two differences that a kind of like this screw assembly is able to fixed bar, adjusts all the imperfection places in the bending simultaneously.
Have at least a kind of used in the past multiaxis screw assembly can reach some above-mentioned purposes; Yet, some inherent problems are arranged in this specific system.This multiaxis screw assembly has many parts to make to insert this screw work loaded down with trivial details, and the operating time of this particular procedure is spun out.In this system is present lock screw is arranged, outside being present lock nut is arranged, operation time is long.Locking multiaxis screw and to make it after system is fastening no longer crooked fixing point also undesirable.
There is the several patents document to advocate to use and it seems the vertebral arch system of several degree of freedom (i.e. rotation and around the finite angle deflection of fixing point) can be provided, with the bone fixation section.See the United States Patent (USP) 5,360,431 of authorizing Puno etc. for example, authorize the United States Patent (USP) 5,443,467 of Biedermann etc. and authorize the United States Patent (USP) 5,176,678 of Tsou.These patent structures respectively have certain defective, comprise the fixed bar that uses plain nut fixed bearing bone section usefulness.Nut has flat edge for using the spanner clamp nut.Owing to surrounding tissue is arranged,, places nut the tram just to have difficulty, thereby require more time to finish operation because the zone is narrow.The patient will be anaesthetized when operation, and the time of prolongation has increased risk for the patient.Have again, after fixing, the soft tissue around nut can be charged into after surgery.This charging into can produce stimulation to surrounding soft tissue, and might cause inflammation.
Another problem of using nut to cause is fastening process.Nut is fastening with spanner.Spanner requires to leave the working place around nut, this has unnecessarily increased the scope of operation.And, spanner not should with come in contact with surrounding soft tissue, in order to avoid surrounding tissue damage.These limitation have further increased the risk that the patient causes in the operation.
Formerly another problem of technological system relates to screw assembly and is fixed on mode on the fixed bar.For example, such system that patent disclosed such as Biedermann every side of fixed bar all use pad or nut with fixed bar fixing present on.Nut or gasket surface are flat, can only contact with fixed bar along straightway.Thisly can not provide enough pull-out capacities on the surface of fixed bar, move between back fixed bar, seat to prevent to perform the operation with limited the contacting of fixed bar.Unless the screw seat is firmly fixing fixed bar, fixed bar just has the trend of twisting or rotating in one or more.If fixed bar can be with respect to one (and relevant screw) rotation, and adjacent seat and screw remain locked on the fixed bar, be fixed on locking on screw just may move and from the vertebra that it is imbedded, overflow.This may produce the vertebra damage, and may make the nerve that is cut off stretch out the spinal column of this point.If make fixed bar can be relative to all its former several of being secured to rotate, it just may move in the muscle, in the soft tissue, even in spinal column.
The assembly that needs a kind of more reliable pedicle screw system and fixed bar is arranged, and it does not need a large amount of equipments and fixes on the thronely quickly and easily, and is not easy to charge into surrounding soft tissue.
The present invention's general introduction
The present invention efforts be made so that with multiaxis pedicle screw system assembly and fixed bar bone fixation section.This fixed bar is arranged to the vertebra that is fixed between two or more screw assembly of imbedding with spinal fixation.This assembly comprises that one has a termination and the screw that axostylus axostyle is arranged, and there were top and bottom in the screw termination among this screw can screw in bone, and the both is spherical convex, and the diameter of termination is greater than the diameter of axostylus axostyle.A spanner composition surface is arranged at the top of screw termination, such as hexagonal hole spanner socket.
Screw is packed into and is used to admit in multiaxis seat fixed bar, that be provided with a stepped bore.The multiaxis seat is divided into three parts.The top of seat holds the whole screw that comprises the termination, is formed by the post of pair of upright, has defined a U-lag and admit fixed bar between two posts.The inwall tapping of post is to admit the fixing dog screw on the throne of fixed bar.There is the bottom of individual endosphere concave surface with the support screw termination at the middle part of seat.The diameter that passes the hole of bottom only can allow the axostylus axostyle of bracelet pass through.Screw can screw fixed after inserting the multiaxis seat in bone.
Putting into one in present then, to have be the pad of endosphere concave surface bottom surface substantially, is used for the turnbuckle screw termination.Preferably, the bottom surface of pad is provided with coarse surface, such as the exasperate of sharp prismatic, so that the locking action after the assembling between pad and the screw termination to be provided.One concave surface is arranged on the top of pad, be preferably half round post saddle type in other words, with the shape of applying fixed bar.
The lower surface of pad is provided with the firm field of conjugate action of screw termination, thereby increases the stability of back fixed bar in place and screw.
The screw assembly surface comprises that further a cup-shaped cover that two relative openings are arranged holds two posts and one and strides across the cover cross-over joint at the end.Cross-over joint has a flat-top and recessed hemispherical the fit shape of fixed bar of the end of vertical saddle type in other words.Cup-shaped cover is used to cover on the multiaxis seat, contacts with fixed bar with the bottom surface of cross-over joint.
Spanner with inner hexagon spanner and so on inserts the spanner composition surface, the dog screw of conventional configuration is screwed in the top of multiaxis seat, handle component is fastening on the throne, the fixed bar composition surface of cross-over joint can be provided with rough surface, for example a series of cusped edges (perhaps limit) by the longitudinal axis trend that is parallel to fixed bar form, perhaps form with less radius of curvature than the top, thereby cross-over joint is held fixed bar tightly behind the screwed in place screw, prevent its present intort in the bottom.
When dog screw is in place but when not tightening, assembly has three degree of freedom, that is, can be around rotation of screw termination and angle correcting, screwed in place screw handle component is fixed to single position.Dog screw makes the assembly energy fastening, overcomes the shortcoming because of the potential soft tissue injury that uses the nut generation simultaneously.The soft tissue that screw assembly of the present invention is fixing around can not charging into after on the throne.Cause the risk of stimulation and the risk of soft tissue injury thereby reduce.
The present invention provides the bone section fixed system of high degree of flexibility and stability, result to reduce to allow the patient be in time under the anesthesia with seldom parts.The following explanation that reading is done with reference to accompanying drawing will be better appreciated by construction features of the present invention and operating feature, and identical parts are marked with identical label in several accompanying drawings.
The accompanying drawing summary
Fig. 1 is the sketch map of several sections vertebras in the spinal column, is fixed with on it according to pedicle screw system assembly of the present invention and fixed bar;
Fig. 2 for the assembling done along 1-1 line among Fig. 1 the cutaway view of pedicle screw system assembly, the part of screw axostylus axostyle only is shown;
Fig. 3 is depicted as the top of pad, the post of seat and the lower end of cover, but does not have fixed bar for the cutaway view of the assembly done along 3-3 line among Fig. 2;
Fig. 4 is the exploded view of screw assembly and fixed bar;
Fig. 5 is the cutaway view of the pad done along 5-5 line among Fig. 4;
Fig. 6 is the cutaway view of another embodiment of assembly, and the part of screw axostylus axostyle only is shown;
Fig. 7 is the exploded view of the assembly of Fig. 6;
Fig. 8 is the cutaway view of the assembly done along 8-8 line among Fig. 6;
Figure 9 shows that the partial sectional view of another configuration of fixed bar composition surface of cover cross-over joint;
Figure 10 is the bottom plan view that another cover is arranged among Fig. 9; And
Figure 11 is the flat sheet of the bottom view of the used pad of Fig. 6 embodiment.
Referring now to accompanying drawing, Fig. 1 particularly, a pedicle screw system assembly according to the present invention is waited to be fixed in the vertebra of patient's spinal column, connects rigidity (although bendable) fixed bar 11 then, to fix these vertebras and to make it to merge.
Shown in Fig. 2 and 4, screw assembly 10 comprises pedicle screw system 12, it have in the axostylus axostyle 14 of 15 place's hitch and with the integrally formed termination 16 of this axostylus axostyle.Except that with termination and axostylus axostyle junction, the termination is spherical.The sphere of termination is divided into upper and lower surface, and each surface (being lower surface 17 and upper surface 18) is hemisphere face shape substantially.The end face of termination comprises the recess of spanner composition surface 19 forms.Shown spanner composition surface is interior hexagonal slot-like, to put into the suitable spanner of die nut and so on.The spanner composition surface also can be for inserting the groove shape of screwdriver, perhaps other suitable depression shape.The diameter of screw termination is greater than the diameter of screw axostylus axostyle 14 as shown in Figure 2.
Hold the multiaxis seat 20 that screw uses and form, as shown in Figure 2 by top 20, middle part 24 and bottom 26.A stepped axial hole 28 passes pedestal, and the aperture at 20 places is greater than the diameter of screw axle portion at the top.The post 30 of pair of upright is defined at the top, forms fixed bar receiving channel 31 therebetween.The inwall tapping of post sees hereinafter to engage dog screw.The middle part 24 of seat is defined one and is roughly interior spheric concave surface 27, is used to engage the protruding hemispherical bottom 17 of termination.
The aperture at present 26 places, bottom is greater than the diameter of the axostylus axostyle 14 of hitch, but less than the diameter of the termination of screw 16.When assembling, screw is put in the seat 20 of multiaxis, and the spherical recess of the end of the termination of screw 12 with middle part 27 contacts, as shown in Figure 2.The screw termination is put and is held present 20 bottom in other words like this.A cylindrical outer surface 33 that is interrupted by groove 31 is arranged at the top 22 of seat, and a spheric substantially outer surface 39 is arranged at middle part and bottom, and surface 39 extends to hole 28 by upper surface 33.
Shown in Fig. 2 and 4, pad 34 is used to be placed between the fixed upper surface of fixed bar and termination.The upper surface of pad 34 comprises a usually recessed semi-cylindrical fixed bar composition surface 36, and it engages fixed bar 11.The bottom of pad have one usually the composition surface, termination 38 of spherical female with the end face 18 of turnbuckle screw 12 terminations.See Fig. 5.
Shown in Fig. 2 and 4, a cup-shaped cover 40 with cylindrical outer surface and inner surface 41,42 is used for being placed on the top of multiaxis seat 20 and engages the top of fixed bar 11.The end of cover 40, have a pair of spaced arcuate socket 43 to be used to hold post 30, also has the cross-over joint 44 of striding the inner surface transverse width between the hole of a cover.Cross-over joint has flat top 46 and end 46a, and end 46a comprises a recessed longitudinally fixed bar composition surface 47 (that is, half-cylindrical, saddle type U-shaped surface) in other words.Cover is used for covering on the outside of multiaxis seat, and make post 30 pass hole 43 and extend, thereby make cross-over joint be contained in intercolumniation, and in the present groove 28.Cup-shaped cover 40 continues descending in the axial hole of multiaxis seat, comes in contact up to the fixed bar composition surface and the fixed bar 11 of cross-over joint.
The dog screw 48 of a routine is finished the pedicle screw system assembly.Dog screw comprises external screw 50, top 52 and the end 58.Top 52 has one to play spanner composition surface 56, caves in other words as hexagonal recess, that is to say the hexagonal socket.The end 58 is flat.In the time of in the axial hole of insertion multiaxis seat, the spiral shell garnishment on the screw thread of dog screw and the inwall of post is given birth to interlock.During screwed in place screw 48, the top of the end of dog screw 48 and cross-over joint 44 comes in contact, and upwards pushes away seat or pushes away fixed bar downwards, and perhaps the two row of holding concurrently is between fixed bar is housed in the screw termination (comprising pad) of implantation securely and covers.Outer section 45 of cover 40 is used as support column 36 and prevents post outwards motion or fork when screwing dog screw, thereby guaranteed stable assembling.
Because dog screw is assemblied in the inside of multiaxis seat, not contact between dog screw and patient's tissue.This has reduced the risk of tissue injury, and it is littler to make the operation that the pedicle screw system assembly is installed charge into face.The spanner composition surface is easier to approachingly in addition, requires littler spanner or clamp device to go to finish fastening process.These factors have reduced the required time of performing the operation, and tissue injury is seldom taken place, and go handle component fixing on the throne with littler clamp device.
Before final fastening work, the multiaxis seat can rotate freely and do angular displacement around the screw termination of implanting.This in order to adapt to all crooked freely-movables in the fixed bar, this paper is called three degree of freedom.After reaching correct alignment, can be fixed on the single position that requires by final fastening dog screw handle component.
As the result of this step, the bone section is introduced into stable fixed bit.Can be referring to Fig. 1 to this better understanding.This figure shows that vertebral arch and fixed bar are on the throne with the spinal fixation vertebra.Thereby this fixed bar is connected to other vertebra and vertebra is remained on stationary state, but not shown in the figures.
Screw assembly and fixed bar can be used high-strength material manufacturing, for example rustless steel.Perhaps preferred titanium, titanium can not take place to repel with organizing with bone on every side.
Fig. 6-8 and 11 be depicted as the cover 40 of a mutation ', have the fixed bar composition surface 47 of mutation ' and pad configuration 34 ', have the composition surface, screw termination 38 of mutation '.The fixed bar composition surface 47 of cover cross-over joint 44 ' (in last central part 47c ' fork) ' both sides 47a ' and each of 47b ' all form upwardly extending step configuration, the inside sharp rib 47d ' that gives prominence to of generation.The longitudinal axis x-x that these sharp ribs are parallel to fixed bar extends, and is born against on the surface of fixed bar when screwing dog screw.All of these sharp ribs prevention fixed bars rotatablely move or reverse.
Pad 34 ' rough surface, this be by with the circular sharp protuberance of the concentric arrangement of the axis y-y ' of seat in other words prismatic become.The step configuration extends up to centre bore 34b ' from the pad bottom.When screwing dog screw with respect to the position, angle of screw holder, sharp protuberance is born against on the upper surface of screw termination.
Sharp rib 38 ' engagement the seat lock on the throne firmly with respect to the screw termination.
Now referring to Fig. 9 and Figure 10, be depicted as cover cross-over joint 44 here " another mutation of fixed bar composition surface configuration.Cross-over joint 44 " do the radius R 1 at mid portion S1 place the radius with fixed bar is identical basically.From the not end 60 of part S1, radius is (promptly on part S2) decrescence, is kept to radius R 2 (being slightly smaller than radius R 1) at recess shown in Figure 9.Poor-this need some thousandths of inch of radius R 1 and R2-cross-over joint can be stuck on the fixed bar 11 cooperates the composition surface, and effectively and securely cover is stuck on the fixed bar when screwing dog screw.This guarantees that fixed bar does not rotate, reverses in present or does longitudinal sliding motion.
Under the situation that does not depart from the defined the spirit and scope of the present invention of claims, the parameter of apparatus of the present invention can several means change.Therefore accompanying drawing never can be considered limitation of the present invention only with narrating and describing.
Claims (20)
1. pedicle screw system assembly, be connected with fixed bar and be used in the bone fixation section, wherein, a screw of collecting a multiaxis seat bottom has one to be used to screw in the axostylus axostyle of bone section band hitch and the termination of an expansion, this seat can rotate freely and be pivoted with respect to the screw termination, and a pair of axial post that forms the top of seat is arranged, and has defined a U-lag and admit fixed bar between two posts, and have interior screw thread to admit fixed bar is fixed on dog screw on the assembly, its improvement comprises:
A cup-shaped cover, it has two covers joining relative hole and a cross-over joint of striding its end extension of described post, cross-over joint is in U-lag and between dog screw and fixed bar, and defined one recessed, be generally the face of saddle type, to engage the upper surface of fixed bar; With
The pad between fixed bar and screw termination in seat, pad have one recessed, be generally the upper surface of saddle type, engaging the lower surface of fixed bar, the lower surface of cross-over joint and the upper surface of the pad fixed bar that plays a part to hold when screwing dog screw prevents the present internal rotation of fixed bar or travels longitudinally.
2. pedicle screw system assembly as claimed in claim 1 is characterized by, and the fixed bar of cross-over joint engages concave surface and comprises a plurality of sharp-pointed projections, and they trend towards the surface of engaging-in fixed bar when screwing dog screw.
3. pedicle screw system assembly as claimed in claim 2 is characterized by, and the fixed bar of cross-over joint engages concave surface and is formed with a plurality of sharp-pointed protuberances that extend in parallel with longitudinal axis fixed bar.
4. pedicle screw system assembly as claimed in claim 3 is characterized by, and the fixed bar of cross-over joint engages concave surface two relative sides, and wherein upwardly extending step configuration is all made in each side.
5. pedicle screw system assembly as claimed in claim 2, it is characterized by, the cross section that the fixed bar of cross-over joint engages concave surface generally is half-cylindrical, the radius of its bottom is slightly smaller than the radius of fixed bar, thereby the bottom of cross-over joint is pushed outwards when screwing dog screw, squeezes to be clipped on the outer surface of fixed bar.
6. pedicle screw system assembly as claimed in claim 1 is characterized by, and the screw termination is generally hemispheric upper surface, and its Intermediate gasket is generally hemispheric lower surface with the turnbuckle screw termination.
7. pedicle screw system assembly as claimed in claim 6 is characterized by, and the lower surface of pad is a rough surface embracing the screw termination, and the angular relationship that seat and screw are maintained fixed.
8. pedicle screw system assembly as claimed in claim 7 is characterized by, and the lower surface of pad is formed with a plurality of sharp-pointed projections.
9. pedicle screw system assembly as claimed in claim 8 is characterized by, and described sharp-pointed projection forms circular distribution on the semicircular surface of pad.
10. pedicle screw system assembly as claimed in claim 9 is characterized by, and described sharp-pointed projection has been determined a concentrically ringed step distribution that diameter successively decreased to the top from the end of groove.
11. pedicle screw system assembly, be connected with circular fixed bar and be used in the bone fixation section, wherein, a screw that is housed in a multiaxis seat bottom has one to be used to screw in the axostylus axostyle of bone section band hitch and the termination of an expansion, there are a hemispheric end face of epirelief and a bottom surface substantially in described termination, described seat has an inner surface that is substantially spherical female to contact with the bottom surface of screw termination in its underpart, make seat rotate freely and to be pivoted with respect to the screw termination, and a pair of axial post that forms the top of seat arranged, between two posts, define a U-lag and admitted fixed bar, and have interior screw thread to admit one fixed bar is fixed on dog screw on the assembly, its improvement comprises:
A cup-shaped cover, it has two radially relative holes, their covers are being joined described post, thereby cover can prevent the seat pillar fork when screwing dog screw, describedly be covered with one and stride the cross-over joint that extends its end, cross-over joint and has defined a recessed semi-cylindrical upper surface that engages fixed bar in U-lag and between dog screw and fixed bar; With
Pad between seat internal fixation bar and screw termination, pad have one recessed, be semi-cylindrical upper surface substantially, to engage the lower surface of fixed bar, with a upper surface that is hemispheric lower surface with the turnbuckle screw termination substantially, the lower surface of cross-over joint and the upper surface of pad play to hold fixed bar to prevent the present internal rotation of fixed bar or to travel longitudinally that the lower surface of pad plays a part to embrace the screw termination when screwing dog screw and makes seat and screw termination remain on the fixed position when screwing dog screw.
12. pedicle screw system assembly as claimed in claim 11 is characterized by, the fixed bar of cross-over joint engages concave surface and comprises a plurality of sharp-pointed projections, and they trend towards the surface of engaging-in fixed bar when screwing dog screw.
13. pedicle screw system assembly as claimed in claim 12 is characterized by, the fixed bar of cross-over joint engages concave surface and is formed with a plurality of sharp-pointed protuberances that extend in parallel with longitudinal axis fixed bar.
14. pedicle screw system assembly as claimed in claim 13 is characterized by, the fixed bar of cross-over joint engages concave surface two relative sides, and wherein upwardly extending step configuration is all made in each side.
15. pedicle screw system assembly as claimed in claim 12, it is characterized by, the cross section that the fixed bar of cross-over joint engages concave surface is half-cylindrical substantially, the radius of its bottom is slightly smaller than the radius of fixed bar, thereby the bottom of cross-over joint is upwards pushed away and crowded being clipped on the outer surface of fixed bar when screwing dog screw.
16. as pedicle screw system assembly as described in the claim 15, it is characterized by, the fixed bar of cross-over joint engages concave surface and is formed with the middle part that a radius R 1 equals fixed bar radius R 1 substantially, and extend the middle part and recessed composition surface terminal between the end, the transversal radius on described composition surface from the middle ends minimizing up to reducing to R2 in the concave surface end.
17. pedicle screw system assembly as claimed in claim 11 is characterized by, the lower surface of pad is the angular relationship of rough surface to embrace the screw termination and seat and screw are maintained fixed after screwing dog screw.
18. pedicle screw system assembly as claimed in claim 17 is characterized by, the lower surface of pad is formed with a plurality of sharp-pointed projection edge.
19. pedicle screw system assembly as claimed in claim 18 is characterized by, described sharp-pointed projection forms circular distribution on the semicircular surface of pad.
20. pedicle screw system assembly as claimed in claim 19 is characterized by, described sharp-pointed projection has determined that the concentrically ringed step that a diameter increased progressively to the top from the end of groove distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97180855 CN1241127A (en) | 1996-12-20 | 1997-12-19 | Pedicle screw system for osteosynthesis |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/771,133 | 1996-12-20 | ||
| CN 97180855 CN1241127A (en) | 1996-12-20 | 1997-12-19 | Pedicle screw system for osteosynthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1241127A true CN1241127A (en) | 2000-01-12 |
Family
ID=5177915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97180855 Pending CN1241127A (en) | 1996-12-20 | 1997-12-19 | Pedicle screw system for osteosynthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1241127A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1907240B (en) * | 2005-08-03 | 2011-03-16 | 比德曼莫泰赫有限公司 | Bone anchoring device |
| CN101389279B (en) * | 2004-06-17 | 2011-05-25 | 华沙整形外科股份有限公司 | Multi-axial bone attachment assembly |
| CN102164551A (en) * | 2008-07-24 | 2011-08-24 | 英格纽姆股份公司 | Locking mechanism with two-piece washer |
| US8192468B2 (en) | 2005-12-23 | 2012-06-05 | Biedermann Technologies Gmbh & Co. Kg | Dynamic stabilization device for bones or vertebrae |
| CN103110452A (en) * | 2013-01-14 | 2013-05-22 | 史亚民 | Growth adjustable one-way nail |
| CN103635156A (en) * | 2010-12-01 | 2014-03-12 | 阿曼迪亚公司 | Bone screw system |
| CN103784187A (en) * | 2014-02-19 | 2014-05-14 | 山东航维骨科医疗器械股份有限公司 | Minimally invasive wedge-shaped locking vertebral pedicle screw |
| CN105596071A (en) * | 2015-12-31 | 2016-05-25 | 何静 | Dual-functional pedicle screw |
| CN105848597A (en) * | 2013-11-22 | 2016-08-10 | 脊柱平衡股份有限公司 | Poly-axial pedicle screw assembly and packaging therefor |
| CN106037908A (en) * | 2016-05-13 | 2016-10-26 | 张衣北 | Universal pedicle screw capable of realizing single-axis fixation |
-
1997
- 1997-12-19 CN CN 97180855 patent/CN1241127A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389279B (en) * | 2004-06-17 | 2011-05-25 | 华沙整形外科股份有限公司 | Multi-axial bone attachment assembly |
| US8696712B2 (en) | 2005-08-03 | 2014-04-15 | Biedermann Technologies Gmbh & Co. Kg | Bone anchoring device |
| CN1907240B (en) * | 2005-08-03 | 2011-03-16 | 比德曼莫泰赫有限公司 | Bone anchoring device |
| US8192468B2 (en) | 2005-12-23 | 2012-06-05 | Biedermann Technologies Gmbh & Co. Kg | Dynamic stabilization device for bones or vertebrae |
| CN1985771B (en) * | 2005-12-23 | 2013-10-02 | 比德尔曼技术有限责任两合公司 | Dynamic stabilization device for bones or vertebrae |
| US8979902B2 (en) | 2005-12-23 | 2015-03-17 | Biedermann Technologies Gmbh & Co. Kg | Dynamic stabilization device for bones or vertebrae |
| CN102164551A (en) * | 2008-07-24 | 2011-08-24 | 英格纽姆股份公司 | Locking mechanism with two-piece washer |
| CN103635156A (en) * | 2010-12-01 | 2014-03-12 | 阿曼迪亚公司 | Bone screw system |
| CN103110452B (en) * | 2013-01-14 | 2016-01-20 | 史亚民 | Growth adjustable single is to nail |
| CN103110452A (en) * | 2013-01-14 | 2013-05-22 | 史亚民 | Growth adjustable one-way nail |
| CN105848597A (en) * | 2013-11-22 | 2016-08-10 | 脊柱平衡股份有限公司 | Poly-axial pedicle screw assembly and packaging therefor |
| CN103784187A (en) * | 2014-02-19 | 2014-05-14 | 山东航维骨科医疗器械股份有限公司 | Minimally invasive wedge-shaped locking vertebral pedicle screw |
| CN103784187B (en) * | 2014-02-19 | 2015-11-25 | 山东航维骨科医疗器械股份有限公司 | A kind of Wicresoft wedge lock pedicle nail |
| CN105596071A (en) * | 2015-12-31 | 2016-05-25 | 何静 | Dual-functional pedicle screw |
| CN105596071B (en) * | 2015-12-31 | 2018-03-23 | 何静 | A kind of dual-purpose pedicle nail |
| CN106037908A (en) * | 2016-05-13 | 2016-10-26 | 张衣北 | Universal pedicle screw capable of realizing single-axis fixation |
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