CN102319106A - Vertebral column posterial retention device - Google Patents
Vertebral column posterial retention device Download PDFInfo
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- CN102319106A CN102319106A CN201110253387A CN201110253387A CN102319106A CN 102319106 A CN102319106 A CN 102319106A CN 201110253387 A CN201110253387 A CN 201110253387A CN 201110253387 A CN201110253387 A CN 201110253387A CN 102319106 A CN102319106 A CN 102319106A
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- vertebral
- column
- posterial
- retention device
- fixing device
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Abstract
The invention discloses a vertebral column posterial retention device, which comprises a positioning column and a plate-shaped body, wherein the positioning column is placed between two adjacent vertebral body spinous processes of a vertebral column, the plate-shaped body is fixed at one end of the positioning column, and at least two threaded holes matched with screw heads of fixing screws are arranged on the plate-shaped body. The positioning column of the vertebral column posterial retention device can support the two vertebral body spinous processes to be open, the normal bending and upright requirements of the vertebral column are met, in addition, different from the connection mode of the vertebral body through pedicle screws in the prior art, the vertebral column posterial retention device has the advantages that the fixing screws connected with the vertebral column posterial retention device are inserted into a vertebral plate of the vertebral body, i.e. the connection of the adjacent vertebral bodies can be realized, the surgery operation process is safer and more reliable, when the vertebral column posterial retention device is implanted into the body with the fixing screws, the positioning column is stably clamped between the two vertebral body spinous processes, so the stability of the vertebral column posterial retention device and the fixing screws is improved. In addition, the vertebral column posterial retention device has the advantages that the size is smaller, the structure is stable, and a great number of surgical apparatuses are not needed for the connection between the fixing screws and an internal fixing device in an auxiliary way, so the surgical risk is reduced.
Description
Technical field
Field of medical technology of the present invention, particularly a kind of spinal column way of escape fixing device.
Background technology
Along with the development of biomechanics Research and material science, the internal fixation The Application of Technology more and more widely, to such an extent as in operative treatments such as spinal column degenerative disease, tumor of spine, the infection of wound spinal column, obtained extensive use.
Internal fixation technical application restoring backbone device is treated, and the restoring backbone device mainly comprises reposition lever and pedicle nail.Surgical operation step is following:
(1) carries out preparing before the art: mainly according to the concrete needs of operation, choose the pedicle nail of diameter, length appropriate, confirm the suitable angle of going into to follow closely simultaneously;
(2) go into to follow closely after angle confirms, carry out accurate being equipped with in location and nail road of pedicle of vertebral arch, confirm the entry point of pedicle nail according to this angle;
(3) implant pedicle nail to the pedicle of vertebral arch place;
(4) bend rod, dress rod and pressure bar operation: the pedicle nail of implanting in adjacent two vertebral bodys need be connected in one and can realize resetting of two vertebral bodys; The available technology adopting reposition lever connects pedicle nail; According to the difference of rachiocamposis angle, need reposition lever be bent to suitable angle (also can with carry out the body inner bending again after awl nut nail is connected); Again reposition lever is connected two pedicle nails, when pedicle nail is staple, reposition lever is placed the U-lag of pedicle nail, the immediate shipment clubs is done, and then, uses lock-screw tentatively to compress reposition lever;
(5) the surgical site spinal column is carried out orthopedic resetting, and lock-screw is locked reposition lever and pedicle nail fully.
The mode that above-mentioned restoring backbone has adopted the spinal column way of escape to reset; Mainly implant pedicle nail in the pedicle of vertebral arch place; Because the distance of two pedicle nails of adjacent vertebral bodies one side is longer, and because the restriction of structure space, the length of reposition lever and angle of bend must in the light of actual conditions be adjusted in external or body; Thereby need bend operations such as rod, dress rod and pressure bar, complex operation; And these action needs are by a large amount of supporting apparatuses, and such as the breast-stroke pincers, wave pincers, pressure bar device etc., higher to doctor's specification requirement when using such apparatus, operation risk is also corresponding higher; In addition, only rely on the connection of reposition lever to realize resetting, resetting is prone to lose.
In view of this, how to provide a kind of operation more easy spinal column fixing device, reduce operation risk, the hold reset effect is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of the invention is for providing a kind of spinal column way of escape fixing device, is located between the spinous process that post places spinal column two vertebral bodys, and the hold-down screw that is attached thereto inserts the effect that vertebral plate can play restoring backbone; Simple in structure; Volume is less, is convenient to operation technique, can reduce operation risk.
For reaching the object of the invention, the present invention provides a kind of spinal column way of escape fixing device, is connected with hold-down screw, comprises in order to be placed in reference column between the adjacent two vertebral body spinous process of spinal column, to be fixed in the plate body of said reference column one end; Said plate body is provided with at least two screwed holes that cooperate with said hold-down screw head of screw.
Preferably, the radial dimension of said reference column is along cumulative away from the direction of said plate body.
Preferably, said reference column is provided with the axial hole.
Preferably, said reference column is provided with radial hole, and said radial hole and said axial hole communicate.
Preferably, said plate body is provided with support column.
The spinal column way of escape fixing device that this invention provides, its reference column can strut two spinous process between the spinous process of two adjacent spinal vertebrals, increase the gap of the two, satisfies normal bending of spinal column and axial needs; And; Different with the pedicle nail realization vertebral body ways of connecting through the insertion pedicle of vertebral arch in the prior art, the hold-down screw that is connected with this spinal column way of escape fixing device inserts the connection that the vertebral body vertebral plate can be realized adjacent vertebral bodies, during operation; Can avoid passing through the high-risk anatomic region; Need not a large amount of muscular tissues of cutting and separating or involve other joint tissues, operating process is safer reliable, and then reduces operation wound to greatest extent; When this spinal column way of escape fixing device and hold-down screw implanted, its plate body and reference column were fixed or are integral structure, and reference column is stable to be stuck between two spinous process, thereby improved the stability of whole spinal column way of escape fixing device and hold-down screw; In addition, this spinal column way of escape fixing device volume is less, and Stability Analysis of Structures need not being connected of a large amount of operating theater instruments auxiliary fixing screws and inner fixing device, and operation process is simple to operate, thereby reduces operation risk.
In further technical scheme; Reference column is provided with axial hole and radial hole; And radial hole and axial hole all communicate, and then the tissue around the reference column is grown into radially or behind the axial hole, can be blended in the axial hole; Thereby the effect that bone is merged is more good, and what can more effectively prevent to reset loses.
Description of drawings
Fig. 1 is the structural representation of a kind of specific embodiment of spinal column way of escape fixing device;
Fig. 2 is a kind of structural representation that spinal column way of escape fixing device provided by the present invention is connected with hold-down screw;
Structural representation when Fig. 3 implants two adjacent spinal vertebrals for spinal column way of escape fixing device and hold-down screw;
Fig. 4 is the structural representation of the another kind of angle of Fig. 3, and this figure only illustrates a joint vertebral body;
Fig. 5 is the axial cutaway view of the another kind of specific embodiment of spinal column way of escape fixing device provided by the present invention, axially refers to the axial of reference column here;
Fig. 6 is the structural representation of plate body in another specific embodiment of spinal column way of escape fixing device provided by the present invention.
The specific embodiment
Core of the present invention is for providing a kind of spinal column way of escape fixing device, is located between the spinous process that post places spinal column two vertebral bodys, and the hold-down screw that is attached thereto inserts the effect that vertebral plate can play restoring backbone; Simple in structure; Volume is less, is convenient to operation technique, can reduce operation risk.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of specific embodiment of spinal column way of escape fixing device; Fig. 2 is a kind of structural representation that spinal column way of escape fixing device provided by the present invention is connected with hold-down screw.
Spinal column way of escape fixing device 2 among this embodiment resets with hold-down screw 3 common completion spinal columns; Spinal column way of escape fixing device 2 has reference column 21 and the plate body 22 that is positioned at reference column 21 1 ends; Plate body 22 is provided with the screwed hole 222 that at least two confession hold-down screws 3 run through; The two ends of plate body shown in Fig. 1 22 respectively are provided with a screwed hole 222, and two hold-down screws 3 insert a screwed hole 222, two hold-down screws 3 respectively among Fig. 2 nail body and reference column 21 are positioned at the same side.
During these spinal column way of escape fixing device 2 implant into body, understand the structural representation when Fig. 3 implants two adjacent spinal vertebrals for spinal column way of escape fixing device and hold-down screw in conjunction with Fig. 3 and Fig. 4; Fig. 4 is the structural representation of the another kind of angle of Fig. 3, and this figure only illustrates a joint vertebral body.
During operation; The reference column 21 of spinal column way of escape fixing device 2 is placed between the spinous process 41 of two vertebral bodys 4 up and down; As shown in Figure 3, the plate body 22 of spinal column way of escape fixing device 2 one ends is positioned on the vertebral plate of spinous process 41 1 sides, and the two ends of plate body 22 and two adjacent spinous process 41 conflicts; Two hold-down screws 3 in two screwed holes 222 of insertion plate body 22 two ends insert corresponding spinous process 41 and pass; On the vertebral plate of insertion and plate body 22 opposite sides, two hold-down screws 3 insert the vertebral plate of two vertebral bodys 4 respectively, realize the connection of two vertebral bodys 4 again.
Because two hold-down screws 3 insert the vertebral plate of plate body 22 opposite sides, its nail body and reference column 21 are positioned at the same side, and then plate body 22 is roughly vertical with hold-down screw 3, and reference column 21 is approximately perpendicular to the plate face of plate body 22.Certainly, hold-down screw 3 also can directly insert the vertebral plate of plate body 22 1 sides, because the restriction of vertebral plate structure, and the vertebral plate that hold-down screw 3 the inserts plate bodys 22 opposite sides practical operation of being more convenient for.
Can know that by foregoing two vertebral bodys 4 are through the relative fixed of plate body 22 and hold-down screw 3 realization positions.The screwed hole 22 of plate body 22 cooperates with the screw thread ailhead of hold-down screw 3, then can realize the secure fixation of hold-down screw 3 and plate body 22, has good locking effect.
Need to prove; The number of the screwed hole 222 on the plate body 22 also can be more than two, and correspondingly, hold-down screw 3 numbers that insert a vertebral body vertebral plate can be more than one; Volume in view of vertebral plate is provided with the demand that two screwed holes 222 can satisfy held stationary.
The spinal column way of escape fixing device 2 that this invention provides; Its reference column 21 is between the spinous process 41 of two adjacent spinal vertebrals 4; Can strut two spinous process 41 (usually spinal vertebral 4 deform, when damaging; Too small even the applying in gap between two spinous process 41 influences normal function), satisfy normal bending of spinal column and axial needs; And; Different with the pedicle nail realization vertebral body ways of connecting through the insertion pedicle of vertebral arch in the prior art, the hold-down screw 3 that is connected with this spinal column way of escape fixing device 2 inserts the connection that vertebral bodys 4 vertebral plates can be realized adjacent vertebral bodies 4, during operation; Can avoid passing through the high-risk anatomic region; Need not a large amount of muscular tissues of cutting and separating or involve other joint tissues, operating process is safer reliable, and then reduces operation wound to greatest extent; Correspondingly; When this spinal column way of escape fixing device 2 implants with hold-down screw 3; The plate body 22 of spinal column way of escape fixing device 2 is fixed with reference column 21 or is integral structure; Reference column 21 is stable to be stuck between two spinous process, thereby improves the stability of whole spinal column way of escape fixing device 2 and hold-down screw 3; In addition, these spinal column way of escape fixing device 2 volumes are less, and Stability Analysis of Structures need not being connected of a large amount of operating theater instruments auxiliary fixing screws 3 and inner fixing device, and operation process is simple to operate, thereby reduce operation risk.
Further, reference column 21 is away from the radial dimension of the plate body 22 1 ends radial dimension greater than reference column 21 other parts.As shown in Figure 3, the right-hand member of reference column 21 connects plate body 22, and in fact, the plate body 22 at this place is integrally formed the formula structure with the right-hand member of reference column 21, and the left end of reference column 21 is away from plate body 22.Plate body 22 is conflicted with spinous process 41; Reference column 21 left end sizes are greater than the radial dimension of reference column 21 right-hand members and interlude, and as can be seen from Figure 4, the interlude of reference column 21 and right-hand member are stuck between two spinous process 41; The radial dimension of its left end is bigger; And left end is positioned at the left side of two spinous process 41, and as can be seen from the figure, the left side is and a side away from plate body 22; The plate body 22 of reference column 21 right-hand members is conflicted with spinous process 41, then in fact, reference column 21 can't be to the left or the right side break away from, be clamped between two spinous process 41.Therefore, after spinal column way of escape fixing device 2 places between the spinous process 41, be clamped between two spinous process 41, can't break away from, have advantages of higher stability, and then make the position of the hold-down screw 3 that is attached thereto more stable from the either side of spinous process 41.In addition; Preferably make reference column 21 interludes and left end have changeover portion; The radial dimension that is reference column 21 interludes is through the cumulative radial dimension to left end of changeover portion; Make the structure of spinal column way of escape fixing device 2 be easier to adapt to the shape of spinous process 41, except make fixing more stable, not easy damaged spinous process 41 and vertebral plate.
In addition, can on reference column 21, process radial hole 211, described herein radially is reference column 21 radially.The peripheral distribution of reference column 21 has some radial holes 211 among Fig. 4, and hole body helps to impel bone to merge to grow into, and what prevent to reset loses; And because reference column 21 is horizontally placed between two spinous process 41, the contact area of its periphery and spinous process 41 or vertebral plate is bigger, in its periphery arrange radial 211; Can increase the probability that bone merges, hence one can see that, under the prerequisite that does not influence reference column 21 intensity; Should measure the number that increases radial hole 211 to the greatest extent, add the degree that bone strengthening merges.
Can also on reference column 21, process axial hole 212.Please refer to Fig. 5, Fig. 5 is the axial cutaway view of the another kind of specific embodiment of spinal column way of escape fixing device provided by the present invention, axially refers to the axial of reference column here.
Also be provided with axial hole 212 on the reference column 21 of this embodiment.Identical with the effect of radial hole 211; Axial hole 212 also helps to impel the fusion of bone to grow into; The radial dimension in the axial hole 212 shown in Fig. 5 also should increase the radial dimension in axial hole 212 greater than the radial dimension of radial hole 211 under the prerequisite that does not influence reference column 21 intensity.Based on improving the purpose that bone merges degree, further, add man-hour; Radial hole 211 and axial hole 212 are all communicated; Radial hole 211 shown in Fig. 5 all is communicated with intermediary axial hole 212, after then the tissue around the reference column 21 is grown into radial hole 211 or axial hole 212, can be blended in the axial hole 212; Thereby the effect that bone is merged is more good, and what can more effectively prevent to reset loses.Among this embodiment, the shape of axial hole 212 and radial hole 211 all is preferably circular hole, and the fusion that is suitable for bone is grown into.
Please refer to Fig. 6, Fig. 6 is the structural representation of plate body in another specific embodiment of spinal column way of escape fixing device provided by the present invention.
During operation, can use a plurality of spinal column way of escape fixing devices 2 and corresponding hold-down screw 3 to realize the reparation and the rectification of more piece spinal vertebral.Wherein, for avoiding mutual interference, adjacent spinal way of escape fixing device 2 (between the successive three joint vertebral bodys two spinal column way of escape fixing devices 2 being set) should be crisscross arranged, and promptly on the direction that spinal column extends, adjacent two spinal column way of escape fixing devices 2 are divided into the both sides of spinal column.
More than a kind of spinal column way of escape fixing device provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (5)
1. a spinal column way of escape fixing device is connected with hold-down screw, it is characterized in that, comprises in order to be placed in reference column (21) between the adjacent two vertebral body spinous process of spinal column, to be fixed in the plate body (22) of said reference column (21) one ends; Said plate body (22) is provided with at least two screwed holes (222) that cooperate with said hold-down screw (3) head of screw.
2. spinal column way of escape fixing device according to claim 1 is characterized in that, said reference column (21) is away from the radial dimension of said plate body (22) the one ends radial dimension greater than other parts of said reference column (21).
3. spinal column way of escape fixing device according to claim 1 and 2 is characterized in that said reference column (21) is provided with axial hole (212).
4. spinal column way of escape fixing device according to claim 3 is characterized in that said reference column is provided with radial hole (211), and said radial hole (211) and said axial hole (212) communicate.
5. spinal column way of escape fixing device according to claim 4 is characterized in that said plate body (22) is provided with support column (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253387.8A CN102319106B (en) | 2011-08-30 | 2011-08-30 | Vertebral column posterial retention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253387.8A CN102319106B (en) | 2011-08-30 | 2011-08-30 | Vertebral column posterial retention device |
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| Publication Number | Publication Date |
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| CN102319106A true CN102319106A (en) | 2012-01-18 |
| CN102319106B CN102319106B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110253387.8A Active CN102319106B (en) | 2011-08-30 | 2011-08-30 | Vertebral column posterial retention device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060293662A1 (en) * | 2005-06-13 | 2006-12-28 | Boyer Michael L Ii | Spinous process spacer |
| CN101444435A (en) * | 2008-12-25 | 2009-06-03 | 李开南 | Absorbable transverse process fusion apparatus |
| CN202235632U (en) * | 2011-08-30 | 2012-05-30 | 上海拓腾医疗器械有限公司 | Vertebra posterior positioning device |
-
2011
- 2011-08-30 CN CN201110253387.8A patent/CN102319106B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060293662A1 (en) * | 2005-06-13 | 2006-12-28 | Boyer Michael L Ii | Spinous process spacer |
| CN101444435A (en) * | 2008-12-25 | 2009-06-03 | 李开南 | Absorbable transverse process fusion apparatus |
| CN202235632U (en) * | 2011-08-30 | 2012-05-30 | 上海拓腾医疗器械有限公司 | Vertebra posterior positioning device |
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| Publication number | Publication date |
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| CN102319106B (en) | 2014-06-25 |
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Owner name: SHANGHAI SANYOU MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: SHANGHAI TATENG MEDICAL DEVICE CO.,LTD. Effective date: 20140506 |
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Free format text: CORRECT: ADDRESS; FROM: 201209 PUDONG NEW AREA, SHANGHAI TO: 201800 JIADING, SHANGHAI |
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Effective date of registration: 20140506 Address after: 201800, 1988, Jia Tong Road, Shanghai, Jiading District Applicant after: Shanghai Sanyou Medical Devices Co., Ltd. Address before: 201209, Pudong New Area, Shanghai Qing Road 356, 3, 2 floor Applicant before: Shanghai Tateng Medical Device Co.,Ltd. |
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Address after: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Patentee after: Shanghai Sanyou medical equipment Limited by Share Ltd Address before: 201800, 1988, Jia Tong Road, Jiading District, Shanghai, Jiading District Patentee before: Shanghai Sanyou Medical Devices Co., Ltd. |