CN201290757Y - Injectable pediculus arcus vertebrae screw - Google Patents
Injectable pediculus arcus vertebrae screw Download PDFInfo
- Publication number
- CN201290757Y CN201290757Y CNU2008201682436U CN200820168243U CN201290757Y CN 201290757 Y CN201290757 Y CN 201290757Y CN U2008201682436 U CNU2008201682436 U CN U2008201682436U CN 200820168243 U CN200820168243 U CN 200820168243U CN 201290757 Y CN201290757 Y CN 201290757Y
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- screw
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- pedicle
- screw base
- injectable
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- Expired - Lifetime
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Abstract
The utility model relates to a pedicle screw capable of being injected with bone materials. Aiming at solving the defects that the existing pedicle screws are easy to become loosened, prolapsed and ruptured during the use, the utility model provides a pedicle screw with a firm structure which can be injected with bone cements or bone materials and is unlikely to become loosened, prolapsed or ruptured when being implanted in the bodies of the orthopaedics patients. The pedicle screw comprises a screw and a screw base. An injection channel is arranged on a screw rod axis; and a taper thread is arranged on the outer surface of a screw rod. The pedicle screw is characterized in that: a through hole is arranged on the outer surface of the head part of the screw rod, and communicated with the injection channel arranged on the screw rod axis; the screw base is in a U-shape; a saw-tooth thread is arranged on the inner surface of the screw base; and a pressing bar groove and a fragile groove are positioned on the outer surface of the screw base. The pedicle screw can adopt a single-shaft structural form or a universal structural form. In the universal structural form, a split type structure is arranged between the screw and the screw base; and a ball-end structure is arranged at the tail of the screw rod.
Description
Technical field
This utility model belongs to the orthopaedics implant field, particularly a kind ofly is used for the vertebral body shakiness, the nail road is overhauled and vertebral fracture imports the injectable pedicle screw of the injectable bone material of medium.
Background technology
Existing orthopaedics implant LOCATION OF PEDICLE SCREW FIXATION at orthopaedics clinically, particularly in the loose vertebral fracture treatment that causes of senile fracture, obtained extensive use, but in use existing pedicle screw exists the weak point that screw easily becomes flexible, deviates from and ruptures, and this brings great misery to the patient.
Summary of the invention
The purpose of this utility model is in use to exist the weak point that screw easily becomes flexible, deviates from and ruptures at existing pedicle screw, provide the firm in structure of a kind of injectable bone cement or bone material, the injectable pedicle screw that can not become flexible, can not deviate from and can not rupture after implantation orthopedics patient body is interior.
This utility model is to finish by following technical scheme, a kind of injectable pedicle screw, this pedicle screw comprises screw and screw base, on screw axis, be provided with injection canal, on the lateral surface of screw rod, be provided with taper thread, it is characterized in that on the lateral surface of screw head, being provided with through hole, through hole connects with the injection canal that is located on the screw axis, screw base takes the shape of the letter U, and is provided with saw-tooth thread on the medial surface of screw base, is provided with the pressure bar groove on the lateral surface of screw base.
In above-mentioned injectable pedicle screw, on the lateral surface of screw base, be provided with easy fault trough, easily fault trough is positioned at the rear side of pressure bar groove.
In above-mentioned injectable pedicle screw, pedicle screw adopts single-shaft configuration, promptly is monolithic construction between screw rod and the screw base.
In above-mentioned injectable pedicle screw, pedicle screw can adopt universal structure, be to be split-type structural between screw rod and the screw base, wherein, the afterbody of screw rod is a ball head structure, is provided with a screw hole at the head of screw base, and screw rod is inserted in the screw hole of head of screw base, the bulb of screw rod tail is fixed on the screw base inboard by back-up ring, and back-up ring and screw base are fixed together.In use, universal pedicle screw not only meets clinical in ordinary fixed and fixed requirement, and the screw rod ailhead can become the angle of certain limit in any direction, at utmost reduced the curved excellent requirement to pitman, also reduced the stress concentration of following closely excellent junction.
In the universal pedicle screw of above-mentioned injectable, on the lateral surface of screw base, be provided with the back-up ring fixing hole, wherein, the back-up ring fixed hole position is in the head of screw base, the pressure bar groove is positioned at the rear side of back-up ring fixing hole, the lateral surface of back-up ring is provided with locating slot, and back-up ring is fixed together by back-up ring fixing hole on the screw base and locating slot and the screw base on the back-up ring.
In the universal pedicle screw of above-mentioned injectable, on the lateral surface of screw base, be provided with easy fault trough, easily fault trough is positioned at the rear side of pressure bar groove.
During use, after pedicle screw is screwed into vertebral body, enter vertebral body by screw injection canal injection bone cement or bone material, load onto pitman and the horizontal device that connects, strut or pressurize with strutting compressor as the case may be in the art, tighten clamp nut, at last with the special equipment pedicle screw body prolongation that fractures, form low incisura, effectively reduce the stimulation and the postoperative damage of soft tissue.
This utility model is compared with existing pedicle screw, have firm in structure, the characteristics that can not become flexible, can not deviate from and can not rupture after implanting in the orthopedics patient body.
Description of drawings
Fig. 1 is a kind of structural representation of injectable single shaft pedicle screw.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is a kind of axonometric drawing of injectable single shaft pedicle screw.
Fig. 4 is the structural representation of the universal pedicle screw of a kind of injectable.
Fig. 5 is the vertical view of Fig. 4.
Fig. 6 is the STRUCTURE DECOMPOSITION figure of the universal pedicle screw of a kind of injectable.
The specific embodiment
Contrast accompanying drawing below, the utility model is described in further detail by embodiment.
With reference to accompanying drawing 1 to accompanying drawing 3, a kind of injectable single shaft pedicle screw, it is made up of screw rod 1 and screw base 2, be monolithic construction between screw rod 1 and the screw base 2, wherein, on screw rod 1 axis, be provided with injection canal 101, on the lateral surface of screw rod 1, be provided with taper thread 102, be provided with through hole 103 on the lateral surface of screw rod 1 head, through hole 103 connects with the injection canal 101 that is located on screw rod 1 axis; Screw base 2 takes the shape of the letter U, and is provided with saw-tooth thread 201 on the medial surface of screw base 2, is provided with easy fault trough 202 and pressure bar groove 203 on the lateral surface of screw base 2, and wherein easy fault trough 202 is positioned at the rear side of pressure bar groove 203.
With reference to accompanying drawing 4 to accompanying drawing 6, the universal pedicle screw of a kind of injectable, it is made up of screw rod 3, screw base 4 and back-up ring 5, screw rod 3, screw base 4 and back-up ring 5 are split-type structural, wherein, are provided with injection canal 301 on screw rod 3 axis, on the lateral surface of screw rod 3, be provided with taper thread 302, be provided with through hole 303 on the lateral surface of screw rod 3 heads, through hole 303 connects with the injection canal 301 that is located on screw rod 3 axis, and the afterbody of screw rod 3 is a ball head structure; Screw base 4 takes the shape of the letter U, head at screw base 4 is provided with a screw hole, on the medial surface of screw base 4, be provided with saw-tooth thread 401, on the lateral surface of screw base 4, be provided with easy fault trough 402, pressure bar groove 403 and back-up ring fixing hole 404, wherein, back-up ring fixing hole 404 is positioned at the head of screw base 4, and pressure bar groove 403 is positioned at the rear side of back-up ring fixing hole 404, and easily fault trough 402 is positioned at the rear side of pressure bar groove 403; The lateral surface of back-up ring 5 is provided with locating slot 501; Screw rod 3 is inserted in the screw hole of head of screw base 4, screw rod 3 afterbodys be fixed on screw base 4 inboards for bulb by back-up ring 5, back-up ring 5 is fixed together with screw base 4 by back-up ring fixing hole 404 on the screw base 4 and the locating slot on the back-up ring 5 501.
Claims (6)
1, a kind of injectable pedicle screw, this pedicle screw comprises screw and screw base, on screw axis, be provided with injection canal, on the lateral surface of screw rod, be provided with taper thread, it is characterized in that being provided with through hole on the lateral surface of screw head, through hole connects with the injection canal that is located on the screw axis, and screw base takes the shape of the letter U, on the medial surface of screw base, be provided with saw-tooth thread, on the lateral surface of screw base, be provided with the pressure bar groove.
2, injectable pedicle screw according to claim 1 is characterized in that being provided with easy fault trough on the lateral surface of screw base, easily fault trough is positioned at the rear side of pressure bar groove.
3, injectable pedicle screw according to claim 1 and 2 is characterized in that pedicle screw adopts single-shaft configuration, promptly is monolithic construction between screw rod and the screw base.
4, injectable pedicle screw according to claim 1, it is characterized in that pedicle screw adopts universal structure, be to be split-type structural between screw rod and the screw base, wherein, the afterbody of screw rod is a ball head structure, is provided with a screw hole at the head of screw base, and screw rod is inserted in the screw hole of head of screw base, the bulb of screw rod tail is fixed on the screw base inboard by back-up ring, and back-up ring and screw base are fixed together.
5, injectable pedicle screw according to claim 4, it is characterized in that on the lateral surface of screw base, being provided with the back-up ring fixing hole, wherein, the back-up ring fixed hole position is in the head of screw base, the pressure bar groove is positioned at the rear side of back-up ring fixing hole, the lateral surface of back-up ring is provided with locating slot, and back-up ring is fixed together by back-up ring fixing hole on the screw base and locating slot and the screw base on the back-up ring.
6, according to claim 4 or 5 described injectable pedicle screws, it is characterized in that being provided with easy fault trough on the lateral surface of screw base, easily fault trough is positioned at the rear side of pressure bar groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201682436U CN201290757Y (en) | 2008-11-18 | 2008-11-18 | Injectable pediculus arcus vertebrae screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201682436U CN201290757Y (en) | 2008-11-18 | 2008-11-18 | Injectable pediculus arcus vertebrae screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201290757Y true CN201290757Y (en) | 2009-08-19 |
Family
ID=41004209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201682436U Expired - Lifetime CN201290757Y (en) | 2008-11-18 | 2008-11-18 | Injectable pediculus arcus vertebrae screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201290757Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803944A (en) * | 2010-03-26 | 2010-08-18 | 王春 | pedicle screw |
| CN102178557A (en) * | 2011-05-12 | 2011-09-14 | 上海市第六人民医院 | Pelvic internal fixation unit and application thereof |
| CN103919603A (en) * | 2014-04-18 | 2014-07-16 | 北京市奥斯比利克新技术开发有限公司 | Long-tail U-type vertebral pedicle locking device |
| CN105125265A (en) * | 2015-07-14 | 2015-12-09 | 屈波 | Fixing method for pelvic posterior ring fracture and fixing device for pelvic posterior ring fracture |
| CN105326556A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Breakable universal pedicle screw |
| CN105326544A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Breakable pedicle screw |
| CN105534587A (en) * | 2015-12-21 | 2016-05-04 | 武汉康斯泰德科技有限公司 | Bone grafting type metal bone needle |
| CN112253595A (en) * | 2020-10-30 | 2021-01-22 | 宁波华科润生物科技有限公司 | Adjustable percutaneous bone cement nail props pressure |
-
2008
- 2008-11-18 CN CNU2008201682436U patent/CN201290757Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803944A (en) * | 2010-03-26 | 2010-08-18 | 王春 | pedicle screw |
| CN101803944B (en) * | 2010-03-26 | 2011-09-28 | 王春 | Pedicle screw |
| CN102178557A (en) * | 2011-05-12 | 2011-09-14 | 上海市第六人民医院 | Pelvic internal fixation unit and application thereof |
| CN102178557B (en) * | 2011-05-12 | 2013-01-23 | 上海市第六人民医院 | Pelvic internal fixation unit and application thereof |
| CN103919603A (en) * | 2014-04-18 | 2014-07-16 | 北京市奥斯比利克新技术开发有限公司 | Long-tail U-type vertebral pedicle locking device |
| CN105326556A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Breakable universal pedicle screw |
| CN105326544A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Breakable pedicle screw |
| CN105125265A (en) * | 2015-07-14 | 2015-12-09 | 屈波 | Fixing method for pelvic posterior ring fracture and fixing device for pelvic posterior ring fracture |
| CN105534587A (en) * | 2015-12-21 | 2016-05-04 | 武汉康斯泰德科技有限公司 | Bone grafting type metal bone needle |
| CN112253595A (en) * | 2020-10-30 | 2021-01-22 | 宁波华科润生物科技有限公司 | Adjustable percutaneous bone cement nail props pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG CANWELL MEDICAL CO., LTD. Free format text: FORMER NAME: KEHUI MEDICAL EQUIPMENT CO., LTD., ZHEJIANG |
|
| CP03 | Change of name, title or address |
Address after: 321016 Zhejiang Province, Jinhua city Wucheng District Xianghua Street No. 466 Patentee after: Zhejiang Ke Hui Medical Treatment Equipment Co., Ltd Address before: 321000 No. 341 Shengli Street, Wucheng District, Zhejiang, Jinhua Patentee before: Zhejiang Canwell Medical Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |
|
| CX01 | Expiry of patent term |