CN102488548A - Internal fixing device and internal fixing method of vertebral columns - Google Patents

Internal fixing device and internal fixing method of vertebral columns Download PDF

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Publication number
CN102488548A
CN102488548A CN2011103914171A CN201110391417A CN102488548A CN 102488548 A CN102488548 A CN 102488548A CN 2011103914171 A CN2011103914171 A CN 2011103914171A CN 201110391417 A CN201110391417 A CN 201110391417A CN 102488548 A CN102488548 A CN 102488548A
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China
Prior art keywords
nail
pedicle
mounting groove
internal fixation
thread
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CN2011103914171A
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CN102488548B (en
Inventor
邱勇
朱泽章
张文桥
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Shanghai Sanyou medical equipment Limited by Share Ltd
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SHANGHAI TATENG MEDICAL DEVICE CO Ltd
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Priority to CN 201110391417 priority Critical patent/CN102488548B/en
Publication of CN102488548A publication Critical patent/CN102488548A/en
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Abstract

The invention discloses an internal fixing device of vertebral columns. Each pedicle screw of the internal fixing device comprises a screw seat and a screw body, wherein the screw seat is provided with a first installation groove and a second installation groove, and the screw body is coaxial with the first installation groove. The invention further provides an internal fixing method of the vertebral columns, which comprises the following steps of determining positions where the pedicle screws are implanted, implanting the screw bodies into pedicles along the first installation grooves, and enabling the screw bodies to be finally connected with the screw seats; installing and fixing short bars in second installation grooves of adjacent two pedicle screws; and installing long bars in first installation grooves of a plurality of pedicle screws. In the process of cutting off vertebral bodies, relative fixing and stability of two vertebral bodies can be achieved by means of the fixing of the pedicle screws. After restoration operation is finished, the short bars do not need dismounting so that possibility of losing restoration during an operation is remarkably reduced, and safe reliability of the operation is remarkably improved. In addition, even though the pedicle screws have simple structures, the pedicle screws meet needs of internal fixing of the vertebral columns, and operation risks are greatly reduced.

Description

Internal fixation of spine device and internal fixation method
Technical field
The present invention relates to medical instruments field, particularly relate to a kind of internal fixation of spine device.In addition, the invention still further relates to a kind of internal fixation of spine method.
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.
Summary of the invention
The purpose of this invention is to provide a kind of internal fixation of spine device and internal fixation method, this inner fixing device and internal fixation method 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 the foregoing invention purpose, the present invention 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 present invention also provides a kind of method of spinal fixation, comprises the following steps:
Confirm to implant the position of pedicle nail, will follow closely body and implant pedicle of vertebral arch, and finally link to each other with the nail seat along first mounting groove; Stub and fixing is installed in second mounting groove of two adjacent pedicle nails; Long rod is installed in first mounting groove of a plurality of pedicle nails.
Internal fixation of spine device provided by the present invention; 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 pedicle nail provided by the present invention 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 pedicle nail provided by the present invention 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 based on the actual needs of operation, need the arranging with the vertical substantially direction of backbone 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 backbone, 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 is the structural representation of a kind of specific embodiment of pedicle nail provided by the present invention;
Fig. 2 is the explosive view of pedicle nail shown in Figure 1;
Fig. 3 is the structural representation of first kind of specific embodiment of nail body provided by the present invention;
Fig. 4 is the structural representation of second kind of specific embodiment of nail body provided by the present invention.
The specific embodiment
Core of the present invention provides a kind of internal fixation of spine device and internal fixation method, and this inner fixing device and internal fixation method 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 the present invention program better, the present invention is done further detailed description below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of specific embodiment of pedicle nail provided by the present invention; Fig. 2 is the explosive view of pedicle nail shown in Figure 1.
Internal fixation of spine device provided by the present invention; 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 pedicle nail provided by the present invention 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 pedicle nail provided by the present invention 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 is the structural representation of first kind of specific embodiment of nail body provided by the present invention; Fig. 4 is the structural representation of second kind of specific embodiment of nail body provided by the present invention.
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.
Except that above-mentioned internal fixation of spine device, the present invention also provides a kind of internal fixation of spine method, comprises the following steps:
S11, the position of confirming to implant pedicle nail will be followed closely body 2 and implant pedicle of vertebral arch along first mounting groove 11, and finally linked to each other with nail seat 1;
In second mounting groove 12 of S12, adjacent two pedicle nails stubs and fixing are installed;
S13, long rod is installed in first mounting groove 11 of a plurality of pedicle nails.
Utilize the stub of 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; Utilize 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.Before this installs long rod, need not remove stub, the probability that occurring in the operation resets loses is obviously reduced, the security reliability of operation obviously improves.
More than internal fixation of spine device provided by the present invention and internal fixation method have been carried out detailed introduction.Used specific case herein 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 (6)

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.
6. an internal fixation of spine method is characterized in that, comprises the following steps:
1) confirm to implant the position of pedicle nail, will follow closely body and implant pedicle of vertebral arch, and finally link to each other with nail along first mounting groove;
2) stub and fixing is installed in second mounting groove of two adjacent pedicle nails;
3) long rod is installed in first mounting groove of a plurality of pedicle nails.
CN 201110391417 2011-11-30 2011-11-30 Internal fixing device and internal fixing method of vertebral columns Active CN102488548B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104306060A (en) * 2014-07-09 2015-01-28 吴爱悯 Dual-port screw
CN105434021A (en) * 2015-11-27 2016-03-30 周建明 Pedicle screw
WO2017107883A1 (en) * 2015-12-23 2017-06-29 马向阳 Screw-rod fixation device specially used for posterior atlantoaxial vertebrae
CN109549696A (en) * 2017-09-27 2019-04-02 上海三友医疗器械股份有限公司 A kind of adjustable double flute internal fixation device of spine and bone screws
WO2019062070A1 (en) * 2017-09-27 2019-04-04 上海三友医疗器械股份有限公司 Adjustable double-slot spinal internal fixing device and bone screw
CN110353791A (en) * 2019-07-24 2019-10-22 任绍东 A kind of hip herringbone bone nail
CN111329568A (en) * 2020-04-03 2020-06-26 贵州医科大学附属医院 Flexible combined fixing device for spine
CN111839701A (en) * 2020-07-13 2020-10-30 北京市春立正达医疗器械股份有限公司 Novel pedicle screw and implantation method thereof
US10966762B2 (en) 2017-12-15 2021-04-06 Medos International Sarl Unilateral implant holders and related methods
US11291481B2 (en) 2019-03-21 2022-04-05 Medos International Sarl Rod reducers and related methods
US11291482B2 (en) 2019-03-21 2022-04-05 Medos International Sarl Rod reducers and related methods

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USD1004774S1 (en) 2019-03-21 2023-11-14 Medos International Sarl Kerrison rod reducer

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JP2001299771A (en) * 2000-04-21 2001-10-30 Robert Reed Shokai Co Ltd Connecting implement for vertebral member
CN1666718A (en) * 2005-03-25 2005-09-14 张英泽 Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe
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US20100280552A1 (en) * 2009-05-04 2010-11-04 Choon Sung Lee Side click connector apparatus for connection of spinal rods
CN102028531A (en) * 2010-12-20 2011-04-27 常州市康辉医疗器械有限公司 Dynamic scoliosis correction device
CN202365900U (en) * 2011-11-30 2012-08-08 上海拓腾医疗器械有限公司 Internal fixation device of spine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001299771A (en) * 2000-04-21 2001-10-30 Robert Reed Shokai Co Ltd Connecting implement for vertebral member
CN1666718A (en) * 2005-03-25 2005-09-14 张英泽 Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe
CN101500500A (en) * 2006-06-05 2009-08-05 特雷伯有限公司 Device for vertebral attachment and tool for fitting of the said device
US20100280552A1 (en) * 2009-05-04 2010-11-04 Choon Sung Lee Side click connector apparatus for connection of spinal rods
CN102028531A (en) * 2010-12-20 2011-04-27 常州市康辉医疗器械有限公司 Dynamic scoliosis correction device
CN202365900U (en) * 2011-11-30 2012-08-08 上海拓腾医疗器械有限公司 Internal fixation device of spine

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104306060A (en) * 2014-07-09 2015-01-28 吴爱悯 Dual-port screw
CN105434021A (en) * 2015-11-27 2016-03-30 周建明 Pedicle screw
WO2017107883A1 (en) * 2015-12-23 2017-06-29 马向阳 Screw-rod fixation device specially used for posterior atlantoaxial vertebrae
AU2018330957B9 (en) * 2017-09-27 2019-09-12 Shanghai Sanyou Medical Co., Ltd. Adjustable double-slot internal spinal fixation apparatus and bone screw
WO2019062070A1 (en) * 2017-09-27 2019-04-04 上海三友医疗器械股份有限公司 Adjustable double-slot spinal internal fixing device and bone screw
AU2018330957B2 (en) * 2017-09-27 2019-08-08 Shanghai Sanyou Medical Co., Ltd. Adjustable double-slot internal spinal fixation apparatus and bone screw
CN109549696A (en) * 2017-09-27 2019-04-02 上海三友医疗器械股份有限公司 A kind of adjustable double flute internal fixation device of spine and bone screws
US11684393B2 (en) 2017-09-27 2023-06-27 Shanghai Sanyou Medical Co., Ltd. Adjustable double-slot internal spinal fixation apparatus and bone screw
CN109549696B (en) * 2017-09-27 2024-03-22 上海三友医疗器械股份有限公司 Adjustable double-groove spine internal fixation device and bone screw
US10966762B2 (en) 2017-12-15 2021-04-06 Medos International Sarl Unilateral implant holders and related methods
US11291481B2 (en) 2019-03-21 2022-04-05 Medos International Sarl Rod reducers and related methods
US11291482B2 (en) 2019-03-21 2022-04-05 Medos International Sarl Rod reducers and related methods
CN110353791A (en) * 2019-07-24 2019-10-22 任绍东 A kind of hip herringbone bone nail
CN111329568A (en) * 2020-04-03 2020-06-26 贵州医科大学附属医院 Flexible combined fixing device for spine
CN111839701A (en) * 2020-07-13 2020-10-30 北京市春立正达医疗器械股份有限公司 Novel pedicle screw and implantation method thereof

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