CN102018564B - Hollow U-shaped nail device capable of injecting bone cement - Google Patents
Hollow U-shaped nail device capable of injecting bone cement Download PDFInfo
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- CN102018564B CN102018564B CN2010105977630A CN201010597763A CN102018564B CN 102018564 B CN102018564 B CN 102018564B CN 2010105977630 A CN2010105977630 A CN 2010105977630A CN 201010597763 A CN201010597763 A CN 201010597763A CN 102018564 B CN102018564 B CN 102018564B
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- hollow
- hole
- pedicle screw
- bone cement
- cylindrical
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- 239000002639 bone cement Substances 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229950000845 politef Drugs 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 206010010214 Compression fracture Diseases 0.000 abstract description 5
- 208000001132 Osteoporosis Diseases 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 208000001848 dysentery Diseases 0.000 abstract 1
- 230000000399 orthopedic effect Effects 0.000 abstract 1
- 230000010412 perfusion Effects 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 3
- 208000002193 Pain Diseases 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 206010065687 Bone loss Diseases 0.000 description 1
- 208000000094 Chronic Pain Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000036592 analgesia Effects 0.000 description 1
- 230000036528 appetite Effects 0.000 description 1
- 235000019789 appetite Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000037118 bone strength Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000036407 pain Effects 0.000 description 1
- 230000009325 pulmonary function Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
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Abstract
The invention discloses a hollow U-shaped nail device capable of injecting bone cement, and relates to an internal fixing device for orthopedic surgery. In particular to the treatment of vertebral body diseases caused by spinal instability, vertebral body compression fracture, osteoporosis, and the like. Consists of a hollow pedicle screw, a middle body and a connector; the hollow pedicle screw is provided with a through hole, namely a hollow inner hole, and further comprises a screw rod with external threads and a head with rectangular internal threads, wherein the head area of the screw rod is provided with a side hole, the head with the rectangular internal threads is provided with a cylindrical hole and an inner tapered hole, and the inner tapered hole is used for connecting an intermediate; the intermediate body is matched with an inner hole at the head part of the hollow pedicle screw; one end of the connector is arranged to be a cylindrical rod and is used for being tightly matched with a cylindrical hole of the intermediate body, the rectangular threads are matched with the rectangular internal thread head of the hollow pedicle screw, and the other end of the connector is provided with a standard Ruhr interface.
Description
Technical field
What the hollow staple device of injectable bone cement of the present invention related to is a kind of inner fixing device that is used for bone surgery.The vertebral body disease that causes especially for treatment spinal column unstability, compression fracture of vertabral body, osteoporosis etc.
Background technology
Tumor of spine or osteoporosis usually cause compression fracture of vertabral body, pain etc., have a strong impact on patient's quality of life.Gerontal patient particularly, normal and deposit organic systemic disease, when a plurality of vertebral compression fracture, cause the distortion of vertebral body sagittal plane, contiguous vertebral body biomechanics changes, and the probability that fracture takes place adjacent vertebral bodies is increased greatly.This type fracture can cause chronic pain, the going down of mobility, and pulmonary function lowers, and appetite is low, and is depressed, and medical expense sharply increases, and thing followed disability rate and case fatality rate increase.The method of traditional treatment painful vertebral compression fracture comprises lies up, medicine analgesia, brace external fixation etc., but these methods can not solve the deformity of spinal column; And the minimizing of activity further causes bone loss; Bone strength descends, and causes the generation of refracture, and is absorbed in vicious cycle.
At present, to this type problem, the protruding plasty treatment in clinical general employing percutaneous vertebroplasty or back, evident in efficacy and stable and durable, widely-used at home and abroad.But there is bigger bone cement risk of leakage in the both, so and the complication of generation has had a strong impact on patient's health.How to adopt safer such disease of method treatment, become the problem that many doctors or medical apparatus and instruments producer seek jointly in recent years.
Summary of the invention
The present invention seeks to provides a kind of hollow staple device of injectable bone cement to above-mentioned weak point, and this apparatus structure is simple, and assembly is few, and is easy to operate and safe, fixing reliable, good airproof performance.
The hollow staple device of injectable bone cement is to take following scheme to realize:
The hollow staple device of injectable bone cement is made up of hollow pedicle screw, intermediate and union joint.Described hollow pedicle screw is provided with through hole; Promptly comprise a hollow endoporus, as the injecting pathway of perfusion bone cement, described hollow pedicle screw also comprises one has externally threaded screw rod and the head that the rectangle female thread is arranged; Described screw head zone is provided with side opening; Described side opening is set to 2～6, is in 60 °～180 ° at angle in described screw axis direction between described side opening adjacent holes, and described side opening is used for the directed bone cement of in pedicle of vertebral arch, injecting; Described have the head of rectangle female thread to be provided with a cylindrical hole and an internal taper hole, and described interior vertebral foramen is used to connect intermediate; Described intermediate is set to cylindrical; Described intermediate matches with the head endoporus of hollow pedicle screw; Described intermediate inside comprises the cylindrical hole of two sections different-diameters, and a bigger hole is used for closely cooperating with union joint in the described cylindrical hole, and it is consistent that a less hole is set in the hollow with the hollow pedicle screw hole size in the described cylindrical hole; Described intermediate comprises the cylindrical conical nose that an inner conical surface that is used for the hollow pedicle screw fits; Described intermediate adopts elasticity material preferably, and described material comprises politef, ultra high molecular polyethylene etc., and the first end of described connection is arranged to cylindrical bar; Said cylindrical bar is used for closely cooperating with the cylindrical hole of intermediate; Described union joint middle part comprises one section rectangular thread, and described rectangular thread matches with the rectangle female thread head of hollow pedicle screw, and the described union joint other end is provided with the female luer of a standard; Described female luer is used to connect injector for medical purpose; Described female luer afterbody is designed to the outer-hexagonal structure and is convenient to rotation, and null interface promptly comprised a hollow endoporus during described union joint also was set to, and the hollow endoporus of said union joint is sized to the hollow endoporus of hollow pedicle screw consistent.
Operation principle:
The hollow staple device of injectable bone cement is connected with intermediate, hollow pedicle screw respectively through each structure on the union joint.Described union joint and described intermediate are through described cylinder and the described intermediate endoporus close-fitting that is connected first end, and this assembling can be accomplished before operation in advance, reduces operating time.Described union joint intermediate rectangular screw thread is connected with described hollow pedicle screw head rectangle female thread, guarantees the stability of the hollow staple device of injectable bone cement.Described intermediate cylindrical conical nose is connected with described hollow pedicle screw head internal taper hole; Described intermediate good springiness; Described intermediate cylindrical conical nose and described hollow pedicle screw internal taper hole can fit tightly under the external force squeezing action; Good airproof performance prevents the seepage of bone cement.
Through operation tool, in pedicle of vertebral arch, get out the endoporus that can place the hollow pedicle screw, rotate described hollow pedicle screw by specific purpose tool, screwed the tram until described hollow pedicle screw.Screw in union joint then and be placed on the described hollow pedicle screw in the pedicle of vertebral arch; The first end of described connection close-fitting intermediate, described intermediate is placed into earlier in the described hollow pedicle screw head cylindrical hole, utilizes operation tool to rotate described union joint outer-hexagonal structure; Fit tightly until described intermediate outer cone and described hollow pedicle screw internal taper hole; Described union joint can not be rotated down again, and so far, the hollow U sprig device of injectable bone cement is accomplished all and connected; Can connect injector for medical purpose this moment through the female luer of described union joint, to vertebral body injection bone cement.
Advantage of the present invention:
Adopted the combination of percutaneous vertebroplasty, the protruding plasty in back and pedicle of vertebral arch internal fixation technology in the hollow staple device design of injectable bone cement; Side opening through intermediary through hole of U sprig and ailhead makes the bone cement directional perfusion arrive desired site, greatly reduces the risk of bone cement seepage.Simultaneously, because the U sprig adopts made, when inculcating bone cement, problems such as balloon rupture, intrusion pipe breach seepage can not take place.
In addition; Because osteoporosis patient's sclerotin poor adhesive force; Insufficient strength is forbidden to use the treatment of pedicle nail technology, and the hollow staple device of injectable bone cement is through union joint, intermediate and hollow pedicle screw perfusion bone cement; Fixing pedicle screw after dabbling then bone cement solidifies, having avoided the loose patient of fracture can't control pedicle screw because of vertebral body can not be through the defective of pedicle of vertebral arch internal fixation technology treatment.
Description of drawings
In order to understand the present invention better and to understand practical application of the present invention, at this paper following accompanying drawing is provided, and said accompanying drawing has been carried out reference.Should be noted that given accompanying drawing only as an example with preferred implementation, institute's restricted portion in restriction explanation and claims.
Fig. 1 is the hollow staple device sketch map of injectable bone cement
Fig. 2 is the hollow pedicle screw sketch map of the hollow staple device of injectable bone cement.
Fig. 3 is the intermediate sketch map of the hollow staple device of injectable bone cement.
Fig. 4 is the union joint sketch map of the hollow staple device of injectable bone cement.
The specific embodiment
With reference to accompanying drawing 1～4, the hollow staple device of injectable bone cement is by hollow pedicle screw 1, and intermediate 2 constitutes with union joint 3.Described hollow pedicle screw 1 is provided with through hole; Promptly comprise a hollow endoporus 4, as the injecting pathway of perfusion bone cement, described hollow pedicle screw 1 also comprises one has externally threaded screw rod 5 and the head 6 that the rectangle female thread is arranged; Described screw rod 5 head zone are provided with side opening 7; Described side opening 7 is set to 2～6, is in 60 °～180 ° at angle at described screw rod 5 axis directions between described side opening 7 adjacent holes, and described side opening 5 is used for the directed bone cement of in pedicle of vertebral arch, injecting; Described have the head 6 of rectangle female thread to be provided with a cylindrical hole 8 and an internal taper hole 9, and described internal taper hole 9 is used to connect intermediate 2; Described intermediate 2 is set to cylindrical; Described intermediate 2 matches with the head cylindrical hole 8 of hollow pedicle screw 1; Described intermediate 2 inside comprise the cylindrical hole 10,11 of two sections different-diameters; A bigger hole 10 is used for closely cooperating with union joint 3 in the described cylindrical hole, and a less hole 11 is set to consistently with the hollow endoporus of hollow pedicle screw 14 sizes in the described cylindrical hole, and described intermediate 2 comprises the cylindrical conical nose 12 that an internal taper hole 9 that is used for hollow pedicle screw 1 fits; Described intermediate 2 adopts elasticity material preferably; Described material comprises politef, ultra high molecular polyethylene etc., and described union joint 3 one ends are arranged to cylindrical bar 13, and said cylindrical bar 13 is used for closely cooperating with the cylindrical hole 10 of intermediate 2; Described union joint 3 middle parts comprise one section rectangular thread 14; Described rectangular thread 14 matches with the rectangle female thread head 6 of hollow pedicle screw 1, and described union joint 3 other ends are provided with the female luer 15 of a standard, and described female luer 15 is used to connect injector for medical purpose; Described female luer afterbody is provided with outer-hexagonal 16; Be convenient to rotation, null interface promptly comprised a hollow endoporus 17 during described union joint 3 also was set to, and the hollow endoporus 17 of said union joint 3 is sized to hollow endoporus 4 unanimities with hollow pedicle screw 1.
Described intermediate adopts politef or high-molecular polythene material to process.
Claims (5)
1. the hollow staple device of an injectable bone cement is characterized in that being made up of hollow pedicle screw, intermediate and union joint; Described hollow pedicle screw is provided with through hole; Promptly comprise a hollow endoporus; Described hollow pedicle screw also comprises one has externally threaded screw rod and the head that the rectangle female thread is arranged; Described screw head zone is provided with side opening, and described have the head of rectangle female thread to be provided with a cylindrical hole and an internal taper hole, and described internal taper hole is used to connect intermediate; Described intermediate is set to cylindrical; Described intermediate matches with the head cylindrical hole of hollow pedicle screw; Described intermediate inside comprises the cylindrical hole of two sections different-diameters; A bigger hole is used for closely cooperating with union joint in the cylindrical hole that said intermediate inside comprises; It is consistent that a less hole is set in the hollow with the hollow pedicle screw hole size in the cylindrical hole that said intermediate inside comprises, and described intermediate comprises the cylindrical conical nose that an internal taper hole that is used for the hollow pedicle screw fits; The first end of described connection is arranged to cylindrical bar; Said cylindrical bar is used for closely cooperating with the cylindrical hole of intermediate; Described union joint middle part comprises one section rectangular thread, and described rectangular thread matches with the rectangle female thread head of hollow pedicle screw, and the described union joint other end is provided with the female luer of a standard; Described union joint also is set to middle null interface, promptly comprises a hollow endoporus.
2. the hollow staple device of injectable bone cement according to claim 1 is characterized in that described side opening is set to 2～6, is in 60 °～180 ° at angle in described screw axis direction between described side opening adjacent holes.
3. the hollow staple device of injectable bone cement according to claim 1 is characterized in that described intermediate adopts politef or high-molecular polythene material to process.
4. the hollow staple device of injectable bone cement according to claim 1 is characterized in that described female luer afterbody is provided with outer-hexagonal.
5. the hollow staple device of injectable bone cement according to claim 1 is characterized in that the hollow endoporus of described union joint is sized to the hollow endoporus of hollow pedicle screw consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105977630A CN102018564B (en) | 2010-12-20 | 2010-12-20 | Hollow U-shaped nail device capable of injecting bone cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105977630A CN102018564B (en) | 2010-12-20 | 2010-12-20 | Hollow U-shaped nail device capable of injecting bone cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102018564A CN102018564A (en) | 2011-04-20 |
| CN102018564B true CN102018564B (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105977630A Active CN102018564B (en) | 2010-12-20 | 2010-12-20 | Hollow U-shaped nail device capable of injecting bone cement |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108606825A (en) * | 2016-12-12 | 2018-10-02 | 创生医疗器械（中国）有限公司 | A kind of osteoporosis pedicle screw |
| TWI637764B (en) * | 2017-11-02 | 2018-10-11 | 台灣微創醫療器材股份有限公司 | Injection unit for injection of bone filler |
| CN109276303A (en) * | 2018-11-27 | 2019-01-29 | 西安市红会医院 | Bone Cement Fixing Screw and Bone Cement Injection Device |
| CN113143437A (en) * | 2021-04-07 | 2021-07-23 | 苏州欣荣博尔特医疗器械有限公司 | Bone cement injection device |
| CN119184823A (en) * | 2024-09-02 | 2024-12-27 | 中国人民解放军总医院第四医学中心 | Fracture fixing device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224132A (en) * | 2007-01-19 | 2008-07-23 | 陈建庭 | Hollow, side hole, directional perfusion cervical pedicle bolt |
| CN201108494Y (en) * | 2007-10-30 | 2008-09-03 | 冠亚国际科技股份有限公司 | Nail structure |
| US20090264895A1 (en) * | 2008-04-22 | 2009-10-22 | Warsaw Orthopedic, Inc. | Systems and methods for implanting a bone fastener and delivering a bone filling material |
| CN201958990U (en) * | 2010-12-20 | 2011-09-07 | 常州市康辉医疗器械有限公司 | Hollow U-shaped nail device capable of injecting bone cement |
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| CN102018564A (en) | 2011-04-20 |
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