CN202365900U - Internal fixation device of spine - Google Patents
Internal fixation device of spine Download PDFInfo
- Publication number
- CN202365900U CN202365900U CN2011204912056U CN201120491205U CN202365900U CN 202365900 U CN202365900 U CN 202365900U CN 2011204912056 U CN2011204912056 U CN 2011204912056U CN 201120491205 U CN201120491205 U CN 201120491205U CN 202365900 U CN202365900 U CN 202365900U
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- Prior art keywords
- nail
- internal fixation
- mounting groove
- thread
- spine
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- 210000000988 bone and bone Anatomy 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000002271 resection Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 206010039722 scoliosis Diseases 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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Abstract
The utility model discloses an internal fixation device of spine. A vertebral pedicle nail of the internal fixation device comprises a nail holder and a nail body, wherein the nail holder is provided with a first mounting groove and a second mounting groove; and the nail body is coaxial with the first mounting groove. In the process of cutting vertebrectomy, due to fixation of the vertebral pedicle nail, relative fixation and stability between two vertebral bodies can be realized; in addition, after resetting is finished, a short stub does not need to be detached, so that the possibility of resetting loss is remarkably reduced in the operation, and the safety reliability during operation is remarkably improved. In addition, the vertebral pedicle nail provided by the utility model is simple in structure, meets the requirements of internal fixation of spine and greatly reduces the operation risks.
Description
Technical field
This utility model relates to medical instruments field, particularly relates to a kind of internal fixation of spine device.
Background technology
The internal fixation of spine The Application of Technology has had the history of decades.It is generally acknowledged that internal fixation of spine truly starts from the 1950's; PaulHarrington is for correcting scoliosis and keep that orthopedic to have developed first kind of way of escape internal fixation system be Harrington system (Ha Shi rod), and reported the clinical practice result in 1962.In the seventies in 20th century, along with " segmental internal fixation of spine " theoretical generation, the once once fashionable whole world of Luque internal fixation system of going in ring; Thereafter C-D (Cotrel-Dubousset) internal fixation system has been born in the eighties in 20th century.Along with the development of spinal biomechanics research and material science, the internal fixation of spine technology has obtained huge advance made, 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.
The surgical operation step of this technology is following:
1, prepare before the art, carry out pedicle nail diameter, length, go into to follow closely the selection of angle;
2, pedicle of vertebral arch location and nail road are prepared, and entry point is selected and the nail road is prepared;
3, implant pedicle nail;
4, curved rod; Curved rod comprises body inflection rod and external curved excellent dual mode, and curved rod requires rod that more accurate plasticity is arranged, and insert smoothly in the pedicle nail U type groove guaranteeing, and realization resets;
5, dress rod, pressure bar, interim locking uses the breast-stroke pincers to operate; This process mainly is in order rod to be pressed onto pedicle nail U type trench bottom, and curved clubs is done, and is that be difficult to can be with the accurately moulding vertebral body curve to the patient of rod; In order smoothly rod to be packed into, have to use a large amount of supporting apparatuses to carry out pull-rod, pressure bar operation, because individual variation; Operation sometimes is difficulty very, and the pressure bar instrument of usefulness comprises usually: pressure bar device, breast-stroke clamp, wave pincers, pressure bar device etc.;
6, orthopedic resetting;
7, final locking is with plug screw locking rod.
In the restoring backbone process, part patient need carry out the part or all of excision operation of vertebral body probably.Behind the vertebral resection, receive the ligament tractive, the distance of the vertebral body of adjacent segment can reduce, and is prone to cause serious risks such as nerve or blood vessel injury.And in the vertebral body reseting procedure, all can use other to strut or pressurizing tool carries out resetting of each sections; To lose in order preventing to reset, all need to lock in advance with fixing behind each reset operation rod.Resetting of human spine is difficult to once accomplish; Need reset operation repeatedly; This just requires in reseting procedure, to carry out the operation of unclamping locking nut and tightening locking nut repeatedly, and this will certainly cause the restoring backbone of part to lose, thereby has influenced final reset effect.
Therefore, how avoiding in the restoring backbone operation process, producing risk and lose with resetting, is the present technical issues that need to address of those skilled in the art.
The utility model content
The purpose of this utility model provides a kind of internal fixation of spine device, and this inner fixing device can effectively improve the security reliability of spinal fixation operation, for extensive patients provides the more operation service of highly effective and safe.
For realizing above-mentioned utility model purpose, this utility model provides a kind of internal fixation of spine device, and its pedicle nail comprises nail seat and nail body, and said nail seat has first mounting groove and second mounting groove, and said nail body is coaxial with said first mounting groove.
Preferably, said nail seat and said nail body are through being threaded.
Preferably; Said nail body comprises the connecting portion that is connected with said nail seat, and the joint portion that is connected with vertebral body, and said joint portion is provided with bone thread and the mechanical whorl that pitch equates; Said bone thread is a single thread, and said mechanical whorl is double thread or multi start thread.
Preferably, said connecting portion has tapered thread, and said nail seat has the bellmouth that cooperates with said tapered thread.
Preferably, said connecting portion has straight thread, and the top of said connecting portion is fixedly connected with positive stop, and said nail seat has the connecting hole that cooperates with said straight thread, and the limiting stand that cooperates with said positive stop.
The internal fixation of spine device that this utility model provided; Comprise some pedicle nails and the long rod that is connected some pedicle nails; Pedicle nail comprises nail seat and nail body; Different with prior art is, the nail seat of the pedicle nail that this utility model provided has first mounting groove and second mounting groove, and said nail body is coaxial with said first mounting groove.In the internal fixation of spine operation, utilize the position of nail body staple seat, in second mounting groove of two adjacent pedicle nails, stub is installed again, at last long rod is installed in first mounting groove.Like this; Utilize second mounting groove can fix the relative position of two pedicle nails; The fixing simultaneously part spinal column that is fixedly connected with two pedicle nails after the multistage spinal column fixes respectively, utilizes the long rod of installing in second mounting groove that the multistage spinal column is linked together again; Form complete internal fixation of spine, reach the purpose of operation.In the vertebral resection process,, can realize that two interpyramidal relative fixed are with stable because the fixing of pedicle nail arranged; And reset after the completion, need not remove stub, the probability that occurring in the operation resets loses is obviously reduced, the security reliability of operation obviously improves.And, though the pedicle nail that this utility model provided is simple in structure, satisfied the needs of internal fixation of spine, greatly reduce operation risk.
A kind of preferred embodiment in, said nail seat and said nail body are through being threaded.Nail seat comprises first mounting groove and second mounting groove, and according to the actual needs of operation, need the arranging with the substantially vertical direction of spinal column of first mounting groove and second mounting groove; Make the width of nail seat bigger; If the nail seat is an integral structure with the nail body, when pedicle nail is installed, along with the rotation of nail body; The nail seat is easy to interfere with spinal column, and its installation difficulty is big.Through the head it off easily that is threaded then, will follow closely seat when pedicle nail is installed and be placed on the relevant position, the nail body is passed the connecting hole of both threaded engagement; With can the staple seat when spinal column is connected; Its installation effectiveness is high, and difficulty is little, the enforcement that helps performing the operation.
In another preferred embodiment, said nail body comprises the connecting portion that is connected with said nail seat, and the joint portion that is connected with vertebral body, and said joint portion is provided with bone thread and the mechanical whorl that pitch equates, said mechanical whorl is double thread or multi start thread.The pitch of bone thread and mechanical whorl equates, can guarantee that bone thread screw-in vertebral body is identical with the individual pen process that mechanical whorl screws in the nail seat, avoids occurring the generation of situation such as interfering.
Description of drawings
Fig. 1 provides the structural representation of a kind of specific embodiment of pedicle nail for this utility model;
Fig. 2 is the explosive view of pedicle nail shown in Figure 1;
Fig. 3 provides the structural representation of first kind of specific embodiment of nail body for this utility model;
Fig. 4 provides the structural representation of second kind of specific embodiment of nail body for this utility model.
The specific embodiment
The core of this utility model provides a kind of internal fixation of spine device, and this inner fixing device can effectively improve the security reliability of spinal fixation operation, for extensive patients provides the more operation service of highly effective and safe.
Need to prove that long rod as herein described and stub are the device in the spinal column fixing operation in the prior art, stub is used to connect adjacent two pedicle nails, and the length of long rod is used to connect a plurality of pedicle nails greater than stub.The device name that should be appreciated that among this paper to be adopted should not limit the protection domain of this patent.
In order to make those skilled in the art person understand this utility model scheme better, this utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 1 and Fig. 2, Fig. 1 provides the structural representation of a kind of specific embodiment of pedicle nail for this utility model; Fig. 2 is the explosive view of pedicle nail shown in Figure 1.
The internal fixation of spine device that this utility model provided; Comprise some pedicle nails and the long rod that is connected some pedicle nails; Pedicle nail comprises nail seat 1 and nail body 2; Different with prior art is, the nail seat 1 of the pedicle nail that this utility model provided has first mounting groove 11 and second mounting groove 12, and nail body 2 is coaxial with first mounting groove 11.In the spinal fixation operation, utilize the position of nail body 2 staple seats 1, in second mounting groove 12 of two adjacent pedicle nails, stub is installed again, at last long rod is installed in first mounting groove 11.Like this; Utilize second mounting groove 12 can fix the relative position of adjacent two pedicle nails; The fixing simultaneously part spinal column that is fixedly connected with two pedicle nails after the multistage spinal column fixes respectively, utilizes the long rod of installing in first mounting groove 11 that the multistage spinal column is linked together again; Form complete spinal fixation, reach the purpose of operation.
In the vertebral resection process,, can realize that two interpyramidal relative fixed are with stable because the fixing of pedicle nail arranged; And reset after the completion, need not remove stub, the probability that occurring in the operation resets loses is obviously reduced, the security reliability of operation obviously improves.And, though the pedicle nail that this utility model provided is simple in structure, satisfied the needs of internal fixation of spine, greatly reduce operation risk.
In a kind of concrete embodiment, nail seat 1 can be through being threaded with nail body 2.Nail seat 1 comprises first mounting groove 11 and second mounting groove 12, and according to the actual needs of operation, first mounting groove 11 and second mounting groove 12 need with the vertical direction arrangement of spinal column cardinal principle; Make the width of nail seat 1 bigger; If nail seat 1 is an integral structure with nail body 2, when pedicle nail is installed, along with the rotation of nail body 2; Nail seat 1 is easy to interfere with spinal column, and its installation difficulty is big.Through the head it off easily that is threaded then, will follow closely seat 1 when pedicle nail is installed and be placed on the relevant position, nail body 2 is passed the connecting hole of both threaded engagement; With can staple seat 1 when spinal column is connected; Its installation effectiveness is high, and difficulty is little, the enforcement that helps performing the operation.
Please refer to Fig. 3 and Fig. 4, Fig. 3 provides the structural representation of first kind of specific embodiment of nail body for this utility model; Fig. 4 provides the structural representation of second kind of specific embodiment of nail body for this utility model.
In further embodiment; Nail body 2 comprises the connecting portion 21 that is connected with nail seat 1, and the joint portion 22 that is connected with vertebral body, and joint portion 22 is provided with the bone thread 221 and mechanical whorl 222 that pitch equates; Bone thread 221 is a single thread, and mechanical whorl 222 is double thread or multi start thread.The pitch of bone thread 221 and mechanical whorl 222 equates, can guarantee that bone thread 221 screw-in vertebral bodys are identical with the individual pen process that mechanical whorl 222 screws in the nail seat, avoids occurring the generation of situation such as interfering.
In first kind of concrete embodiment, connecting portion 21 has tapered thread, and nail seat 1 has the bellmouth that cooperates with tapered thread; As shown in Figure 4; Connecting portion 21 is a tapered thread, and along with nail body 2 deepened continuously with cooperating of spinal column, tapered thread constantly screws in bellmouth; Up to being fixed on bellmouth inside, nail body 2 and nail seat 1 are fixed together.It is dark that the mode of being connected of tapered thread and bellmouth can prevent effectively in the operation process that nail body 2 screwed in, can prevent that also non-magnetic shim body 2 and nail seat 1 break away from, and makes long excellent more reliable fixedly the time.
In second kind of concrete embodiment, connecting portion 21 has straight thread, and the top of connecting portion 21 is fixedly connected with positive stop 23, and nail seat 1 has the connecting hole that cooperates with straight thread, and the limiting stand that cooperates with positive stop 23.During pilot nail body 2; Straight thread cooperates with connecting hole, and when being screwed into to a certain degree, positive stop 23 cooperates with limiting stand; Make nail body 2 can not continue to screw in; It is dark to prevent effectively equally in the operation process that nail body 2 screwed in, can prevent that also non-magnetic shim body 2 and nail seat 1 break away from, and makes long excellent more reliable fixedly the time.
More than the internal fixation of spine device that this utility model provided has been carried out detailed introduction.Used concrete example among this paper the principle and the embodiment of this utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of this utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from this utility model principle, can also carry out some improvement and modification to this utility model, these improvement and modification also fall in the protection domain of this utility model claim.
Claims (5)
1. internal fixation of spine device, its pedicle nail comprise nail seat and nail body, it is characterized in that, said nail has first mounting groove and second mounting groove, and said nail body is coaxial with said first mounting groove.
2. internal fixation of spine device according to claim 1 is characterized in that, said nail seat and said nail body are through being threaded.
3. internal fixation of spine device according to claim 1 and 2; It is characterized in that; Said nail body comprises the connecting portion that is connected with said nail seat; And the joint portion that is connected with vertebral body, said joint portion is provided with bone thread and the mechanical whorl that pitch equates, and said mechanical whorl is double thread or multi start thread.
4. internal fixation of spine device according to claim 3 is characterized in that said connecting portion has tapered thread, and said nail seat has the bellmouth that cooperates with said tapered thread.
5. internal fixation of spine device according to claim 3; It is characterized in that said connecting portion has straight thread, the top of said connecting portion is fixedly connected with positive stop; Said nail seat has connecting hole that cooperates with said straight thread and the limiting stand that cooperates with said positive stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204912056U CN202365900U (en) | 2011-11-30 | 2011-11-30 | Internal fixation device of spine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204912056U CN202365900U (en) | 2011-11-30 | 2011-11-30 | Internal fixation device of spine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202365900U true CN202365900U (en) | 2012-08-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204912056U Expired - Lifetime CN202365900U (en) | 2011-11-30 | 2011-11-30 | Internal fixation device of spine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202365900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488548A (en) * | 2011-11-30 | 2012-06-13 | 上海拓腾医疗器械有限公司 | Internal fixing device and internal fixing method of vertebral columns |
| CN105142843A (en) * | 2013-04-23 | 2015-12-09 | 伊利诺斯工具制品有限公司 | Hybrid thread for welding gun neck |
| CN109875669A (en) * | 2019-04-23 | 2019-06-14 | 天津正天医疗器械有限公司 | A spinal fixation device |
-
2011
- 2011-11-30 CN CN2011204912056U patent/CN202365900U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488548A (en) * | 2011-11-30 | 2012-06-13 | 上海拓腾医疗器械有限公司 | Internal fixing device and internal fixing method of vertebral columns |
| CN105142843A (en) * | 2013-04-23 | 2015-12-09 | 伊利诺斯工具制品有限公司 | Hybrid thread for welding gun neck |
| CN111545879A (en) * | 2013-04-23 | 2020-08-18 | 伊利诺斯工具制品有限公司 | Hybrid thread for welding gun neck |
| CN109875669A (en) * | 2019-04-23 | 2019-06-14 | 天津正天医疗器械有限公司 | A spinal fixation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Sanyou Medical Devices Co., Ltd. Assignor: Shanghai Tateng Medical Device Co.,Ltd. Contract record no.: 2013310000032 Denomination of utility model: Internal fixing device and internal fixing method of vertebral columns Granted publication date: 20120808 License type: Exclusive License Record date: 20130507 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI SANYOU MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: SHANGHAI TATENG MEDICAL DEVICE CO.,LTD. Effective date: 20140716 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201209 PUDONG NEW AREA, SHANGHAI TO: 201800 JIADING, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140716 Address after: 201800, 1988, Jia Tong Road, Shanghai, Jiading District Patentee after: Shanghai Sanyou Medical Devices Co., Ltd. Address before: 201209, Pudong New Area, Shanghai Qing Road 356, 3, 2 floor Patentee before: Shanghai Tateng Medical Device Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
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, Shanghai, Jiading District Patentee before: Shanghai Sanyou Medical Devices Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |