CN102525637B - Pedicle screw component - Google Patents
Pedicle screw component Download PDFInfo
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- CN102525637B CN102525637B CN201210039853.7A CN201210039853A CN102525637B CN 102525637 B CN102525637 B CN 102525637B CN 201210039853 A CN201210039853 A CN 201210039853A CN 102525637 B CN102525637 B CN 102525637B
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- fastening means
- mounting groove
- nail seat
- nail
- pedicle
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Abstract
The invention relates to the field of medical instruments, and discloses a pedicle screw component, which comprises a pedicle screw and a tail connecting tool thereof. The pedicle screw comprises a screw body and a screw seat, the screw body is connected with a human body, the screw seat is connected with the screw body, the tail connecting tool is fixedly connected with the screw seat, and one of the screw seat and the tail connecting tool is provided with a groove axially extending along the screw body while the other one of the screw seat and the tail connecting tool is provided with a bump fittingly connected with the groove. When the pedicle screw is connected with the tail connecting tool, the groove can realize an effective guiding function, deviation between the tail connecting tool and the screw seat can be effectively avoided, connection efficiency of the tail connecting tool and the screw seat is improved, a stable connecting structure is formed, and convenience and speediness are realized. Simultaneously, both the groove and the bump are simple in structure and easy in processing. In addition, the length of the tail connecting tool can be designed according to needs of surgery, the tail of the pedicle screw can be lengthened conveniently, and surgery reduction is realized conveniently.
Description
Technical field
The present invention relates to medical instruments field, particularly relate to a kind of pedicle screw component.
Background technology
The application of internal fixation of spine technology has had the history of decades.It is generally acknowledged that internal fixation of spine truly starts from the 1950's, PaulHarrington is Harrington system (Ha Shi rod) for correcting scoliosis and maintaining orthopedic the first way of escape internal fixation system of having developed, and has reported clinical practice result in 1962 years.At 20 century 70s, along with " segmental internal fixation of spine " theoretical generation, the once fashionable whole world once 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, internal fixation of spine technology has obtained huge advance made, at spinal column degenerative disease, tumor of spine, wound to such an extent as to be widely applied in the operative treatments such as Spondylitis.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of typical pedicle nail in prior art; Fig. 2 is the structural representation of a kind of typical afterbody fastening means in prior art.
At present, our modal pedicle screw component comprises nail seat 11, rivet nut 12 and afterbody fastening means 13, wherein, has an oblong slots 111 in screw nail seat 11, and oblong slots 111 is positioned on 11 two flat horizontal surfaces of nail seat.In operation process, in order to be connected with rivet nut 12, afterbody fastening means 13 uses a long sleeve pipe 131 of dehiscing and an overcoat 132 conventionally, push away overcoat 132 to the bearing of trend of rivet nut 12, the endoporus of overcoat 132 is dehiscing of compressible long sleeve pipe 131, and the boss 1311 of long sleeve pipe 131 is connected with rivet nut 12 by oblong slots 111.
Be subject to implant design limit, there is following problem in pedicle nail and afterbody fastening means 13 thereof in operation:
1, connect difficulty, afterbody fastening means 13 is difficult to align and join with nail seat 11;
2, afterbody fastening means 13 complex structures, need multilayer sleeve to operate;
3, afterbody fastening means 13 takes up room greatly, is unfavorable for that doctor operates.
Therefore, how simplifying the structure of afterbody fastening means, reduce the connection difficulty of pedicle nail, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of pedicle screw component, its pedicle nail and its afterbody fastening means are simple in structure, easy to connect, can effectively reduce the difficulty that is connected of pedicle nail and its afterbody fastening means.
For achieving the above object, the invention provides a kind of pedicle screw component, comprise pedicle nail and afterbody fastening means thereof, described pedicle nail comprises the rivet nut being connected with human body and the nail seat being connected with described rivet nut, described afterbody fastening means is fixedly connected with described nail seat, described nail seat and described afterbody fastening means one have the axially extended groove along described rivet nut, and another one has the projection being connected with described groove fit.
Preferably, described nail seat circumferentially there is flat horizontal surface and periphery, described flat horizontal surface and described periphery are arranged alternately; The mating surface of described nail seat and described afterbody fastening means is described flat horizontal surface.
Preferably, the outer wall of described nail seat is also provided with the first mounting groove radially extending, and the outlet of this first mounting groove is described periphery; Described afterbody fastening means comprises adapter sleeve and is located at the elastic piece structure of described adapter sleeve inner side, the stiff end of this elastic piece structure is fixedly connected with described adapter sleeve, free end is provided with boss, and described boss coordinates with described the first mounting groove, and the inner surface of described adapter sleeve coordinates with described flat horizontal surface.
Preferably, described boss is axial flaring pyramidal structure from bottom to top.
Preferably, described adapter sleeve has tubular-shaped structures, and the number of described flat horizontal surface and described periphery is two, and the number of described the first mounting groove and described elastic piece structure is also two.
Preferably, described adapter sleeve has semi-circular structure, and the number of described the first mounting groove and described elastic piece structure is one.
Preferably, described nail seat also has the second mounting groove of being located at described flat horizontal surface, and this second mounting groove is parallel with described the first mounting groove bearing of trend.
Pedicle screw component provided by the present invention, comprise pedicle nail and afterbody fastening means thereof, described pedicle nail comprises the rivet nut being connected with human body and the nail seat being connected with described rivet nut, described afterbody fastening means is fixedly connected with described nail seat, unlike the prior art, described nail seat and described afterbody fastening means one have the axially extended groove along described rivet nut, and another one has the projection being connected with described groove fit.Pedicle nail is connected work connection during with afterbody, groove is relative with projection, along being axially combined together of rivet nut, groove can effectively lead, can effectively avoid the deviation between afterbody fastening means and nail seat, the joint efficiency that improves afterbody fastening means and nail seat, forms stable syndeton, convenient and swift.Meanwhile, groove and projection are all simple in structure, are easy to processing.In addition, the length of afterbody fastening means can need design according to operation, is convenient to realize pedicle nail afterbody and extends effect, facilitates operative reduction.
One preferred embodiment in, described nail seat circumferentially there is flat horizontal surface and periphery, described flat horizontal surface and described periphery are arranged alternately; The mating surface of described nail seat and described afterbody fastening means is described flat horizontal surface.When pedicle nail coordinates with afterbody fastening means, the mating surface in nail seat is flat horizontal surface, and afterbody fastening means is also flat horizontal surface, and both joint faces can fit tightly, and guarantees to connect closely, increases both cooperation areas, improves both bonding strengths.
In another preferred embodiment, the outer wall of described nail seat is also provided with the first mounting groove radially extending, and the outlet of this first mounting groove is described periphery; Described afterbody fastening means comprises adapter sleeve and is located at the elastic piece structure of described adapter sleeve inner side, the stiff end of this elastic piece structure is fixedly connected with described adapter sleeve, free end is provided with boss, and described boss coordinates with described the first mounting groove, and the inner surface of described adapter sleeve coordinates with described flat horizontal surface.When afterbody fastening means slides along groove, elastic piece structure is positioned in the middle of the inner surface of adapter sleeve and the outer surface of nail seat, and moves with adapter sleeve, under the elastic force effect of elastic piece structure, is offset suitable distance to the periphery of nail seat.After adapter sleeve moves a certain distance, the free-ended boss of shell fragment arrives the first mounting groove position, and under the bounce effect of elastic piece structure, boss snaps in the first mounting groove, the relative position of locking adapter sleeve and nail seat, makes afterbody fastening means effectively be fixedly connected with pedicle nail.This connected mode is simple to operation, and high with joint efficiency, Stability Analysis of Structures, once it is reliable to have connected rear connection, can effectively improve the reliability of pedicle screw component.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of typical pedicle nail in prior art;
Fig. 2 is the structural representation of a kind of typical afterbody fastening means in prior art;
Fig. 3 is the perspective view of a kind of detailed description of the invention of pedicle screw component provided by the present invention;
Fig. 4 is the structural representation of pedicle nail the first detailed description of the invention provided by the present invention;
Fig. 5 is the schematic cross-section of afterbody fastening means the first detailed description of the invention provided by the present invention;
Fig. 6 is the schematic cross-section of afterbody fastening means the second detailed description of the invention provided by the present invention;
Fig. 7 is the schematic cross-section that shown in Fig. 6, afterbody fastening means is connected with nail seat;
Fig. 8 is the top view of a kind of detailed description of the invention of nail seat provided by the present invention;
Fig. 9 is the structural representation of afterbody fastening means the first detailed description of the invention provided by the present invention;
Figure 10 is the structural representation of afterbody fastening means the second detailed description of the invention provided by the present invention;
Figure 11 is the structural representation of pedicle nail the second detailed description of the invention provided by the present invention;
Figure 12 is the perspective view of pedicle nail shown in Figure 11.
Detailed description of the invention
Core of the present invention is to provide a kind of pedicle screw component, and its pedicle nail and its afterbody fastening means are simple in structure, easy to connect, can effectively reduce the difficulty that is connected of pedicle nail and its afterbody fastening means.
The related upper and lower noun of locality that waits herein, the relative position while being in running order taking pedicle screw component is as benchmark defines, near the residing position of rivet nut of tissue be under, the residing position of afterbody fastening means is upper; Meanwhile, the related inside and outside noun of locality that waits herein, be radial center taking rivet nut as datum mark defines, near rivet nut center be in, away from rivet nut center be outside.Should be appreciated that the noun of locality that adopted should not limit the protection domain of this patent herein.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the perspective view of a kind of detailed description of the invention of pedicle screw component provided by the present invention; Fig. 4 is the structural representation of pedicle nail the first detailed description of the invention provided by the present invention.
Pedicle screw component provided by the present invention, comprise pedicle nail 2 and afterbody fastening means 3 thereof, pedicle nail 2 comprises the rivet nut 21 being connected with tissue and the nail seat 22 being connected with rivet nut 21, afterbody fastening means 3 is fixedly connected with nail seat 22, unlike the prior art, nail seat 22 has the axially extended groove 4 along rivet nut 21 with afterbody fastening means 3 one, and another one has the projection 5 being connected with groove 4.Afterbody fastening means 3 has opening to individual lower U-shaped groove 34, and the U-shaped channel opening of upper U-shaped groove 23, two that nail seat 22 has opening upwards is relative, and can hold Ha Shi rod and penetrate, and the passage forming along two U-shaped grooves, press fit in the upper U-shaped groove 23 of nail seat 22.Meanwhile, the upper end of afterbody fastening means 3 has cavity 33, and other implant in operation process and kit can enter in nail seat 22 along cavity 33.
Please refer to Fig. 5 to Fig. 7, Fig. 5 is the schematic cross-section of afterbody fastening means the first detailed description of the invention provided by the present invention; Fig. 6 is the schematic cross-section of afterbody fastening means the second detailed description of the invention provided by the present invention; Fig. 7 is the schematic cross-section that shown in Fig. 6, afterbody fastening means is connected with nail seat.
Afterbody fastening means 3 shown in Fig. 5 is provided with groove 4, afterbody fastening means 3 shown in Fig. 6 is provided with projection 5, nail seat 22 shown in Fig. 7 is provided with and 5 grooves that coordinate 4 of projection shown in Fig. 6, and obviously, the nail seat 22 coordinating with the afterbody fastening means 3 shown in Fig. 5 should have projection 5.Above-mentioned two kinds of pedicle screw components all can meet requirement of the present invention, all should be within protection scope of the present invention.
Pedicle nail 2 is connected work connection during with afterbody, groove 4 is relative with projection 5, along being axially combined together of rivet nut 21, groove 4 can effectively lead, can effectively avoid the deviation between afterbody fastening means 3 and nail seat 22, the joint efficiency that improves afterbody fastening means 3 and nail seat 22, forms stable syndeton, convenient and swift.
Meanwhile, groove 4 is all simple in structure with projection 5, is easy to processing.In addition, the length of afterbody fastening means 3 can need design according to operation, is convenient to realize pedicle nail 2 afterbodys and extends effect, facilitates operative reduction.
Please refer to Fig. 8, Fig. 8 is the top view of a kind of detailed description of the invention of nail seat provided by the present invention.
In a kind of concrete embodiment, nail seat 22 circumferentially there is flat horizontal surface 221 and periphery 222, flat horizontal surface 221 is arranged alternately with periphery 222; Nail seat 22 is flat horizontal surface 221 with the mating surface of afterbody fastening means 3.When pedicle nail 2 coordinates with afterbody fastening means 3, the mating surface in nail seat 22 is flat horizontal surface 221, and afterbody fastening means 3 is also flat horizontal surface 221, both joint faces can fit tightly, guarantee to connect closely, increase both cooperation areas, improve both bonding strengths.
Please refer to Fig. 9 and Figure 10, Fig. 9 is the structural representation of afterbody fastening means the first detailed description of the invention provided by the present invention; Figure 10 is the structural representation of afterbody fastening means the second detailed description of the invention provided by the present invention.
Further, the outer wall of nail seat 22 is also provided with the first mounting groove 223 radially extending, and the outlet of this first mounting groove 223 is periphery 222; Afterbody fastening means 3 comprises adapter sleeve 31 and is located at the elastic piece structure 32 of adapter sleeve 31 inner sides, the stiff end of this elastic piece structure 32 is fixedly connected with adapter sleeve 31, free end is provided with boss 321, and boss 321 coordinates with the first mounting groove 223, and the inner surface of adapter sleeve 31 coordinates with flat horizontal surface 221.When afterbody fastening means 3 slides along groove 4, elastic piece structure 32 is positioned in the middle of the inner surface of adapter sleeve 31 and the outer surface of nail seat 22, and moves with adapter sleeve 31, under the elastic force effect of elastic piece structure 32, is offset suitable distance to the periphery of nail seat 22.After adapter sleeve 31 moves a certain distance, the free-ended boss 321 of shell fragment arrives the first mounting groove 223 positions, under the bounce effect of elastic piece structure 32, boss 321 snaps in the first mounting groove 223, the relative position of locking adapter sleeve 31 and nail seat 22, makes afterbody fastening means 3 effectively be fixedly connected with pedicle nail 2.This connected mode is simple to operation, and high with joint efficiency, Stability Analysis of Structures, once it is reliable to have connected rear connection, can effectively improve the reliability of pedicle screw component.
Concrete, above-mentioned boss 321 can be axial flaring pyramidal structure from bottom to top.When afterbody fastening means 3 is installed, the upper end in contact of its lower end elder generation and nail seat 22, then be the lower end of elastic piece structure 32 and the upper end in contact of nail seat 22, the lower end of boss 321 is less than upper end, more easily wedge between adapter sleeve 31 and nail seat 22, reduce the difficulty that is connected of adapter sleeve 31 and nail seat 22, raising joint efficiency.
In the concrete embodiment of the first, adapter sleeve 31 provided by the present invention is tubular-shaped structures, is enclosed within the periphery (as shown in Figure 9) of nail seat 22 as sleeve pipe.Now be crisscross arranged two peripheries 222 and two flat horizontal surfaces 221 of the periphery of nail seat 22, on each periphery 222, be provided with first mounting groove 223, the inside of adapter sleeve 31 is provided with two elastic piece structures 32, two elastic piece structures 32 are corresponding one by one with two the first mounting grooves 223 respectively, after being installed, the boss 321 of each elastic piece structure 32 snaps in first mounting groove 223, week at mount pad is upwards fixed nail seat 22 and adapter sleeve 31 simultaneously, and structure is more solid and reliable.
In the concrete embodiment of the second, adapter sleeve 31 can be semi-circular structure (as shown in figure 10), be that adapter sleeve 31 coordinates with a periphery 222, the elastic piece structure 32 of its inner side coordinates with the first mounting groove 223 in nail seat 22, equally can fixed operating sleeve 31 and nail seat 22.
Obviously, the number of periphery 222 and flat horizontal surface 221 can be also multiple, and along being circumferentially uniformly distributed of nail seat 22, flat horizontal surface 221 all can be used as the mating surface of adapter sleeve 31 and nail seat 22, and projection 5 and groove 4 are combined together; Periphery 222 all can be used as joint face, and the boss of elastic piece structure 32 321 and the first mounting groove 223 are linked together.Concrete structure can need to determine according to installing.
In addition, the first mounting groove 223 can be the circular groove that has certain depth, can be also through hole, as long as can be fixed with boss 321, just can meet requirement of the present invention, all should be in protection scope of the present invention.
Can improve further above-mentioned pedicle nail 2.
Please refer to Figure 11 and Figure 12, Figure 11 is the structural representation of pedicle nail the second detailed description of the invention provided by the present invention; Figure 12 is the perspective view of pedicle nail shown in Figure 11.
One preferred embodiment in, nail seat 22 provided by the present invention can also be offered the second mounting groove 224 on flat horizontal surface 221, and the second mounting groove 224 is parallel with the first mounting groove 223 bearing of trends.The second mounting groove 224 can increase a fixed support point on flat horizontal surface 221, in the time that pedicle nail 2 is connected with tissue, this fixed support point can utilize other setting tool to be mated, when pedicle nail 2 is installed, be not limited to afterbody fastening means 3 and fix, thus the suitability of increase pedicle nail 2.
And, when afterbody fastening means 3 is fixing, can also increase a new secure mounting arrangements by the second mounting groove 224, utilize new secure mounting arrangements and afterbody fastening means 3 respectively from the radial and axial pedicle nail 2 of fixing simultaneously, thereby effectively increase the constant intensity of pedicle nail 2, improve fixed efficiency and the reliability of pedicle nail 2.
Above pedicle screw component provided by the present invention is described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 the claims in the present invention.
Claims (5)
1. a pedicle screw component, comprise pedicle nail and afterbody fastening means thereof, described pedicle nail comprises the rivet nut being connected with human body and the nail seat being connected with described rivet nut, described afterbody fastening means is fixedly connected with described nail seat, it is characterized in that, described nail seat and described afterbody fastening means one have the axially extended groove along described rivet nut, and another one has the projection being connected with described groove fit; Described nail seat circumferentially there is flat horizontal surface and periphery, described flat horizontal surface and described periphery are arranged alternately; The mating surface of described nail seat and described afterbody fastening means is described flat horizontal surface; The outer wall of described nail seat is also provided with the first mounting groove radially extending, and the outlet of this first mounting groove is described periphery; Described afterbody fastening means comprises adapter sleeve and is located at the elastic piece structure of described adapter sleeve inner side, the stiff end of this elastic piece structure is fixedly connected with described adapter sleeve, free end is provided with boss, and described boss coordinates with described the first mounting groove, and the inner surface of described adapter sleeve coordinates with described flat horizontal surface.
2. pedicle screw component according to claim 1, is characterized in that, described boss is axial flaring pyramidal structure from bottom to top.
3. pedicle screw component according to claim 2, is characterized in that, described adapter sleeve has tubular-shaped structures, and the number of described flat horizontal surface and described periphery is two, and the number of described the first mounting groove and described elastic piece structure is also two.
4. pedicle screw component according to claim 2, is characterized in that, described adapter sleeve has semi-circular structure, and the number of described the first mounting groove and described elastic piece structure is one.
5. according to the pedicle screw component described in claim 2 to 4 any one, it is characterized in that, described nail seat also has the second mounting groove of being located at described flat horizontal surface, and this second mounting groove is parallel with described the first mounting groove bearing of trend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039853.7A CN102525637B (en) | 2012-02-21 | 2012-02-21 | Pedicle screw component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039853.7A CN102525637B (en) | 2012-02-21 | 2012-02-21 | Pedicle screw component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102525637A CN102525637A (en) | 2012-07-04 |
| CN102525637B true CN102525637B (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210039853.7A Active CN102525637B (en) | 2012-02-21 | 2012-02-21 | Pedicle screw component |
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| Country | Link |
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| CN (1) | CN102525637B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327146A (en) * | 2008-07-31 | 2008-12-24 | 中国人民解放军第三军医大学第二附属医院 | Double-groove channel-to-channel connection type percutaneous vertebral pedicle screw nail internal fixation system |
| CN201768026U (en) * | 2010-07-13 | 2011-03-23 | 山东威高骨科材料有限公司 | Long-tail pedicle orthopedic screw |
| CN202446242U (en) * | 2012-02-21 | 2012-09-26 | 上海拓腾医疗器械有限公司 | Vertebra pedical nail assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8454664B2 (en) * | 2010-06-18 | 2013-06-04 | Spine Wave, Inc. | Method for fixing a connecting rod to a thoracic spine |
-
2012
- 2012-02-21 CN CN201210039853.7A patent/CN102525637B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327146A (en) * | 2008-07-31 | 2008-12-24 | 中国人民解放军第三军医大学第二附属医院 | Double-groove channel-to-channel connection type percutaneous vertebral pedicle screw nail internal fixation system |
| CN201768026U (en) * | 2010-07-13 | 2011-03-23 | 山东威高骨科材料有限公司 | Long-tail pedicle orthopedic screw |
| CN202446242U (en) * | 2012-02-21 | 2012-09-26 | 上海拓腾医疗器械有限公司 | Vertebra pedical nail assembly |
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| CN102525637A (en) | 2012-07-04 |
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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: 20140717 |
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Effective date of registration: 20140717 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, Shanghai, Jiading District Patentee before: Shanghai Sanyou Medical Devices Co., Ltd. |