CN204581604U - Self-adapting float combination cervical vertebra Invasive lumbar fusion device - Google Patents
Self-adapting float combination cervical vertebra Invasive lumbar fusion device Download PDFInfo
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- CN204581604U CN204581604U CN201520056953.XU CN201520056953U CN204581604U CN 204581604 U CN204581604 U CN 204581604U CN 201520056953 U CN201520056953 U CN 201520056953U CN 204581604 U CN204581604 U CN 204581604U
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Abstract
The utility model discloses a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device, comprise fusion device main body, steel plate, screw and ball-joint mechanism, described screw is fixed in described fusion device main body through steel plate and described ball-joint mechanism, and described steel plate is rotationally connected by the stiff end of described ball-joint mechanism and described fusion device main body.Steel plate and fusion device main body are adopted floating connection by this utility model, can debug according to the needs of implantation position, make to fit tightly with the surface of bone of adjacent vertebral, can by the screw lock between steel plate and Invasive lumbar fusion device after debugging is good, make between steel plate with fusion device main body relative fixing, operative incision is little, and operation easier is little.
Description
Technical field
This utility model relates to a kind of Invasive lumbar fusion device, particularly relates to a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device.
Background technology
Cervical spondylotic myelopathy and cervical spondylotic radiculopathy are commonly encountered diseases, the frequently-occurring disease of mid-aged population, and along with living-pattern preservation, its sickness rate also improves year by year, and presents the trend of rejuvenation.The pathogenesis of cervical spondylosis is that the backward rear outstanding or cone trailing edge hyperosteogeny of intervertebral disc degradation forms spinal cord in hyperosteogeny compressing cervical spinal canal and nerve root, because the neurocyte in myeloid tissue is very fragile, it is irreversible that the function of nervous system that the pathological changes such as the hypoxic-ischemic caused by compressing cause loses.Therefore answer Operation in early stage to remove compressing for cervical spondylotic myelopathy, the root cervical spondylosis for serious symptom also should take positive operative treatment.Anterior cervical decompression bone graft fusion (being called for short ACDF) is the standard procedures method of current clinical treatment cervical spondylotic myelopathy and cervical spondylotic radiculopathy.Its principle is intervertebral disc, the hyperosteogeny of hypertrophy, the cone of even whole narrow segment through cervical vertebra excision, after excision causes laminated structure, support rib block or Invasive lumbar fusion device (Cage) is implanted up and down between joint, to maintain height and the Axial symptoms of intervertebral in pathological changes.
For low level cervical operation, the mode that Invasive lumbar fusion device adds Interal fixation uses more convenient.What operation in the past adopted is that single Invasive lumbar fusion device and single steel plate are fixed, and Invasive lumbar fusion device is not fixed with steel plate, and the risk having fusion device displacement and do not merge, causes operative failure.Existing another kind of Invasive lumbar fusion device, steel plate and fusion device are fixed together and use, steel plate is provided with fixing hole, by fixing hole and screw, fusion device is fixed, although this kind of fixed form can limit the position of fusion device preferably, not there is between steel plate and fusion device certain Relative Floating space, cannot debug, cause ensureing that the surface of bone with neighbouring cone fits tightly, have a strong impact on operative effect.In addition, after Interal fixation is on fusion device, when implanting, need larger operative incision, not only operation wound is large, and operation easier is comparatively large, increases the pain of injury of patient.
Utility model content
The technical problem that this utility model mainly solves is to provide a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device, steel plate and fusion device main body adopt floating connection, can debug according to the needs of implantation position, make to fit tightly with the surface of bone of adjacent vertebral, can by the screw lock between steel plate and Invasive lumbar fusion device after debugging is good, make between steel plate with fusion device main body relative fixing, operative incision is little, and operation easier is little.
For solving the problems of the technologies described above, the technical scheme that this utility model adopts is: provide a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device, comprise fusion device main body, steel plate, screw and ball-joint mechanism, described screw is fixed in described fusion device main body through steel plate and described ball-joint mechanism, and described steel plate is rotationally connected by the stiff end of described ball-joint mechanism and described fusion device main body.
Further, described ball-joint mechanism comprises the first spherical holder of the stiff end being arranged on described fusion device main body and is arranged on the first spherical groove that the medial surface of described steel plate matches with described first spherical holder.
Further, position relative with described first spherical groove on the lateral surface of described steel plate is provided with the second spherical groove, described steel plate is provided with the first through hole running through described first spherical groove and described second spherical groove, and described screw passes described first through hole and described first spherical holder and described fusion device main body and fixes.
Further, described ball-joint mechanism comprise be arranged on described steel plate medial surface on the second spherical holder and the 3rd spherical groove that matches with described second spherical holder of the stiff end that is arranged on described fusion device main body.
Further, position relative with described second spherical holder on the lateral surface of described steel plate is provided with the 4th spherical groove, described steel plate is provided with the second through hole running through described 4th spherical groove and described second spherical holder, the stiff end of described fusion device main body is provided with the connecting hole running through described 3rd spherical groove, and described screw passes described second through hole and described connecting hole and described fusion device main body and fixes.
Further, be provided with packing ring in described second spherical groove, the shape of described packing ring and the shape of described second spherical groove match.
Further, be provided with packing ring in described 4th spherical groove, the shape of described packing ring and the shape of described 4th spherical groove match.
Further, the diameter of described first through hole is all greater than the diameter of screw rod on screw and is less than the diameter of nut.
Further, described steel plate is provided with some fixing holes, is equipped with hold-down screw in each fixing hole, and some hold-down screws are used for being connected with cervical vertebra cone.
Further, the fixing hole described steel plate passed for the hold-down screw be connected with cervical vertebra upper cone is skew nailing hole.
Further, the diameter of described second through hole is all greater than the diameter of screw rod on screw and is less than the diameter of nut.
This utility model steel plate and fusion device are adopted sphere be connected and attachment screw fix, make between steel plate and fusion device main body installs fix before can relatively rotate, can debug according to the needs of implantation position, make to fit tightly with the surface of bone of adjacent vertebral; By relative with the second spherical groove for the first spherical groove setting of fitting, make it possible to adapt to the error that each azimuth rotation is brought; The diameter of through hole is arranged the diameter being greater than screw rod on screw, fusion device body can not be interfered when steel plate rotates in certain slewing area; Set up the packing ring suitable with the second spherical groove shape, when making screw follow fusion device body rotation, packing ring can slide thus adapt to the direction of screw in spherical groove, can ensure that the nut of screw, packing ring and steel plate three are in fit-state.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment 1 of this utility model self-adapting float combination cervical vertebra Invasive lumbar fusion device.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the structural representation of fusion device body in this utility model embodiment 1.
Fig. 4 is the structural representation of this utility model embodiment 1 light plate.
Fig. 5 is the structural representation of this utility model embodiment 1 light plate.
Fig. 6 is the structural representation of this utility model embodiment 1 middle washer.
Fig. 7 is the structural representation of this utility model embodiment 2.
Fig. 8 is the structural representation of fusion device body in this utility model embodiment 2.
Fig. 9 is the structural representation of this utility model embodiment 2 light plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, set forth this utility model further.In the following detailed description, the mode only by illustrating describes some one exemplary embodiment of the present utility model.Undoubtedly, those of ordinary skill in the art can recognize, when not departing from spirit and scope of the present utility model, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.
Embodiment 1
Please refer to shown in Fig. 1 and Fig. 2, the better embodiment of this utility model self-adapting float combination cervical vertebra Invasive lumbar fusion device comprises: fusion device main body 1, steel plate 2, screw 3 and ball-joint mechanism 4, described screw 3 is fixed in described fusion device main body 1 through steel plate 2 and described ball-joint mechanism 4, and described steel plate 2 is rotationally connected with the stiff end of described fusion device main body 1 by described ball-joint mechanism 4.
Please refer to shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, described ball-joint mechanism 4 comprises the first spherical holder 41 of the stiff end being arranged on described fusion device main body 1 and is arranged on the first spherical groove 21 that the medial surface of described steel plate 2 matches with described first spherical holder 41, position relative with described first spherical groove 21 on the lateral surface of described steel plate 2 is provided with the second spherical groove 22, and described steel plate 2 is provided with the first through hole 23 running through described first spherical groove 21 and described second spherical groove 22.Specifically, described fusion device main body 1 is provided with the fusion hole 11 of up/down perforation, described fusion device main body 1 is divided into stiff end and movable end, the stiff end of described fusion device main body 1 is provided with the first spherical holder 41 that has sphere, preferably, described first spherical holder 41 is one-body molded with described fusion device main body 1.The stiff end of described fusion device main body 1 is provided with the first connecting hole 12 running through described first spherical holder 41.Described screw 3 is fixed through the first connecting hole 12 on the first through hole 23 on described steel plate 2 and described first spherical holder 41 and described fusion device main body 1.The first spherical holder 41 now in described fusion device main body 1 matches with the first spherical groove 21.It should be noted that, in order to the needs coordinated, the front end of described first spherical holder 41 is cut into a plane, and the surrounding of plane is spherical, matches with the sphere of the first spherical groove 21, and can rotate relative to described steel plate 2.Be provided with screw thread in wherein said first connecting hole 12, described screw 3 is fixed by screw thread and fusion device main body 1.Specifically, described first spherical groove 21 and the second spherical groove 22 are oppositely arranged, the two tangent places of spherical groove are set to the first through hole 23, the diameter of described first through hole 23 is greater than the diameter of screw rod on screw 3 and is less than the diameter of nut, and fusion device main body 1 can not be interfered when steel plate 2 rotates in certain slewing area.
Please refer to shown in Fig. 2, Fig. 5 and Fig. 6, wherein, in described second spherical groove 22, be provided with packing ring 24.The shape of described packing ring 24 and the shape of described second spherical groove 22 match.Make screw 3 with fusion device main body 1 when rotating, packing ring 24 can slide with the direction adapting to screw 3 in the second spherical groove 22, thus ensures that the nut on screw 3 can be in fit-state with packing ring 24 and steel plate 2.
Shown in Fig. 2, described steel plate 2 is also provided with some fixing holes 25, is equipped with hold-down screw 31 in each fixing hole 25, some hold-down screws 31 are for being connected with cervical vertebra cone, and each hold-down screw 31 is tapping screw.Specifically, in the present embodiment, the upper/lower terminal of described steel plate 2 is respectively equipped with two fixing holes 25, and two fixing holes 25 of upper end are skew nailing hole, and the hold-down screw 31 of its inside is for being connected with cervical vertebra upper cone, and described fusion device main body 1 is provided with skew nailing groove 13.During use, hold-down screw 31 penetrates and squeezes into upper vertebral body obliquely upward by skew nailing groove 13 in skew nailing hole.Two fixing holes 25 of lower end are vertical nail, and the hold-down screw 31 installed in it squeezes into lower cone perpendicular to steel plate 2.
In fusion device main body 1 implantation process, in order to better ensure that the surface of bone of neighbouring cone fits tightly, need to adjust the position of fusion device main body 1 to needs.During operation, first fusion device main body 1 is implanted between upper lower cone, then put into steel plate 2 from incision, avoid steel plate 2 and be fixed together with fusion device main body 1, need the situation offering larger otch, decrease the pain of injury of patient.Again packing ring 24 is put into the second spherical groove 22, then screw 3 is passed packing ring 24 successively, second spherical groove 22, first connecting hole 12, described first spherical holder 41 is made to be positioned at described first spherical groove 21, and rotating screw 3, by the threaded engagement in screw 3 and the first connecting hole 12, make screw 3 relative with fusion device main body 1 fixing, and ensure that now nut coordinates for lax with packing ring 24, then as required, the position of adjustment fusion device main body 1, now fusion device main body 1 can utilize the first spherical holder 41 to match with the first spherical groove 21 to rotate arbitrarily around steel plate 2, reach the object of debugging.Finally tightened by screw 3, steel plate 2 is fixing relatively to make fusion device main body 1.Now, because have additional the packing ring 24 suitable with spherical groove 23 shape, make fusion device main body 1 when rotating, the nut of screw 3 can be fitted completely with steel plate 2.
Embodiment 2
Please refer to shown in Fig. 7, another embodiment of this utility model self-adapting float combination cervical vertebra Invasive lumbar fusion device comprises: fusion device main body 1, steel plate 2, screw 3 and ball-joint mechanism 4, described screw 3 is fixed in described fusion device main body 1 through steel plate 2 and described ball-joint mechanism 4, and described steel plate 2 is rotationally connected with the stiff end of described fusion device main body 1 by described ball-joint mechanism 4.
Please refer to shown in Fig. 7, Fig. 8 and Fig. 9, described ball-joint mechanism 4 comprise be arranged on described steel plate 2 medial surface on the second spherical holder 42 and the 3rd spherical groove 14 that matches with described second spherical holder 42 of the stiff end that is arranged on described fusion device main body 1.Position relative with described second spherical holder 42 on the lateral surface of described steel plate 2 is provided with the 4th spherical groove 26, and described steel plate 2 is provided with the second through hole 27 running through described 4th spherical groove 26 and described second spherical holder 42.The stiff end of described fusion device main body 1 is provided with the second connecting hole 15 running through described 3rd spherical groove 14, and described screw 3 is fixed with described fusion device main body 1 through described second through hole 27 and described second connecting hole 15.
Specifically, described fusion device main body 1 is provided with the fusion hole 11 of up/down perforation, described fusion device main body 1 is divided into stiff end and movable end, the stiff end of described fusion device main body 1 is provided with the 3rd spherical groove 14 caved inward, be provided with second connecting hole 15 to fusion direction, hole 11 bottom described 3rd spherical groove 14, in described second connecting hole 15, be provided with screw thread.What the inside and outside two sides, top of described steel plate 2 was relative is respectively equipped with the second spherical holder 42 and the 4th spherical groove 26, and described second through hole 27 runs through described 4th spherical groove 26 and described second spherical holder 42.Described screw 3 through the second through hole 27 on steel plate 2, and through described second spherical holder 42 and described 3rd spherical groove 14, is arranged in the second connecting hole 15 and is fixed by screw thread with described fusion device main body 1.It should be noted that, the diameter of described second through hole 27 is greater than the diameter of screw rod on screw 3 and is less than the diameter of nut, and fusion device main body 1 can not be interfered when steel plate 2 rotates in certain slewing area.
Please refer to shown in Fig. 6, Fig. 7 and Fig. 9, wherein, in described 4th spherical groove 26, be provided with packing ring 24.The shape of described packing ring 24 and the shape of described 4th spherical groove 26 match.Make screw 3 with fusion device main body 1 when rotating, packing ring 24 can slide with the direction adapting to screw 3 in the second spherical groove 22, thus ensures that the nut on screw 3 can be in fit-state with packing ring 24 and steel plate 2.
Shown in Fig. 7, described steel plate 2 is also provided with some fixing holes 25, is equipped with hold-down screw 31 in each fixing hole 25, some hold-down screws 31 are for being connected with cervical vertebra cone, and each hold-down screw 31 is tapping screw.Specifically, in the present embodiment, the upper/lower terminal of described steel plate 2 is respectively equipped with two fixing holes 25, and two fixing holes 25 of upper end are skew nailing hole, and the hold-down screw 31 of its inside is for being connected with cervical vertebra upper cone, and described fusion device main body 1 is provided with skew nailing groove 13.During use, hold-down screw 31 penetrates and squeezes into upper vertebral body obliquely upward by skew nailing groove 13 in skew nailing hole.Two fixing holes 25 of lower end are vertical nail, and the hold-down screw 31 installed in it squeezes into lower cone perpendicular to steel plate 2.
Installation method, with embodiment 1, does not repeat them here.
Above the implementation that specific embodiments is described is intended to specific descriptions of the present utility model, can not be interpreted as it is to restriction of the present utility model, those skilled in the art are under instruction of the present utility model, can make various variant on the embodiment basis described in detail, these variants all should be included within design of the present utility model.This utility model scope required for protection only will be stated by described right and limit.
Claims (11)
1. a self-adapting float combination cervical vertebra Invasive lumbar fusion device, it is characterized in that: comprise fusion device main body, steel plate, screw and ball-joint mechanism, described screw is fixed in described fusion device main body through steel plate and described ball-joint mechanism, and described steel plate is rotationally connected by the stiff end of described ball-joint mechanism and described fusion device main body.
2. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 1, is characterized in that: described ball-joint mechanism comprises the first spherical holder of the stiff end being arranged on described fusion device main body and is arranged on the first spherical groove that the medial surface of described steel plate matches with described first spherical holder.
3. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 2, it is characterized in that: position relative with described first spherical groove on the lateral surface of described steel plate is provided with the second spherical groove, described steel plate is provided with the first through hole running through described first spherical groove and described second spherical groove, and described screw passes described first through hole and described first spherical holder and described fusion device main body and fixes.
4. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 1, is characterized in that: described ball-joint mechanism comprise be arranged on described steel plate medial surface on the second spherical holder and the 3rd spherical groove that matches with described second spherical holder of the stiff end that is arranged on described fusion device main body.
5. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 4, it is characterized in that: position relative with described second spherical holder on the lateral surface of described steel plate is provided with the 4th spherical groove, described steel plate is provided with the second through hole running through described 4th spherical groove and described second spherical holder, the stiff end of described fusion device main body is provided with the connecting hole running through described 3rd spherical groove, and described screw passes described second through hole and described connecting hole and described fusion device main body and fixes.
6. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 3, is characterized in that: be provided with packing ring in described second spherical groove, and the shape of described packing ring and the shape of described second spherical groove match.
7. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 5, is characterized in that: be provided with packing ring in described 4th spherical groove, and the shape of described packing ring and the shape of described 4th spherical groove match.
8. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 3, is characterized in that: the diameter of described first through hole is all greater than the diameter of screw rod on screw and is less than the diameter of nut.
9. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 1, is characterized in that: described steel plate is provided with some fixing holes, is equipped with hold-down screw in each fixing hole, and some hold-down screws are used for being connected with cervical vertebra cone.
10. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 9, is characterized in that: the fixing hole that described steel plate passes for the hold-down screw be connected with cervical vertebra upper cone is skew nailing hole.
11. self-adapting float combination cervical vertebra Invasive lumbar fusion devices according to claim 5, is characterized in that: the diameter of described second through hole is all greater than the diameter of screw rod on screw and is less than the diameter of nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056953.XU CN204581604U (en) | 2015-01-27 | 2015-01-27 | Self-adapting float combination cervical vertebra Invasive lumbar fusion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056953.XU CN204581604U (en) | 2015-01-27 | 2015-01-27 | Self-adapting float combination cervical vertebra Invasive lumbar fusion device |
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| CN204581604U true CN204581604U (en) | 2015-08-26 |
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| CN201520056953.XU Withdrawn - After Issue CN204581604U (en) | 2015-01-27 | 2015-01-27 | Self-adapting float combination cervical vertebra Invasive lumbar fusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546095A (en) * | 2015-01-27 | 2015-04-29 | 范伟力 | Adaptive floating combined cervical interbody fusion cage |
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2015
- 2015-01-27 CN CN201520056953.XU patent/CN204581604U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546095A (en) * | 2015-01-27 | 2015-04-29 | 范伟力 | Adaptive floating combined cervical interbody fusion cage |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20170524 |