CN102018564A - Hollow U-shaped nail device capable of being filled with bone cement - Google Patents
Hollow U-shaped nail device capable of being filled with bone cement Download PDFInfo
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- CN102018564A CN102018564A CN 201010597763 CN201010597763A CN102018564A CN 102018564 A CN102018564 A CN 102018564A CN 201010597763 CN201010597763 CN 201010597763 CN 201010597763 A CN201010597763 A CN 201010597763A CN 102018564 A CN102018564 A CN 102018564A
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- pedicle screw
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Abstract
The invention discloses a hollow U-shaped nail device capable of being filled with bone cement, and the U-shaped nail device is an internal fixation device used in the orthopaedic surgery and is especially used in the treatments of vertebral diseases and the like caused by spinal instability, vertebral body compression fracture and osteoporosis. The hollow U-shaped nail device is composed of a hollow pedicle screw, a middle body and a connector; the hollow pedicle screw is provided with a through hole, namely contains an inner hole; the hollow pedicle screw also contains a screw stem with an external thread and a head with a rectangular internal thread; the head of the screw stem is provided with a side hole; the head with the rectangular internal thread is provided with a cylindrical hole and an inner tapered hole; the inner tapered hole is used for connecting the middle body; the middle body fits with the inner hole of the head of the hollow pedicle screw; one end of the connector is a cylindrical rod and is used to fit with the cylindrical hole of the middle body closely; and a rectangular thread fits with the head with the rectangular internal thread of the hollow pedicle screw, and the other end of the connector is provided with a standard Ruhl 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 class 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, at this class problem, the protruding plasty treatment in clinical general employing percutaneous vertebroplasty or back, evident in efficacy and stable lasting, 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 method to treat such disease, 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 at above-mentioned weak point, a kind of hollow staple device of injectable bone cement is provided, this apparatus structure is simple, and assembly is few, and is easy to operate and safe, and is 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 of hollow pedicle screw, intermediate and union joint.Described hollow pedicle screw is provided with through hole, promptly comprise a hollow endoporus, injecting pathway as the perfusion bone cement, described hollow pedicle screw also comprises one 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, be in 60 °～180 ° at angle in described screw axis direction between described side opening adjacent holes, described side opening is used for the directed bone cement of injecting in pedicle of vertebral arch, 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, a bigger hole is used for closely cooperating with union joint in the described cylindrical hole, 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, described material comprises politef, ultra high molecular polyethylene etc., the first end of described connection is arranged to cylindrical bar, described cylindrical bar is used for closely cooperating with the cylindrical hole of intermediate, described union joint middle part comprises one section rectangular thread, described rectangular thread matches with the rectangle female thread head of hollow pedicle screw, 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, null interface promptly comprised a hollow endoporus during described union joint also was set to, and the hollow endoporus of described union joint is sized to the hollow endoporus unanimity with the hollow pedicle screw.
Operation principle:
The hollow staple device of injectable bone cement is connected with intermediate, hollow pedicle screw respectively by each structure on the union joint.Described union joint and described intermediate are by described cylinder and the described intermediate endoporus close-fitting that is connected first end, and this assembling can be finished before operation in advance, reduce 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.
By 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.Then union joint is screwed in the described hollow pedicle screw that is placed 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, utilize 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, so far, the hollow U sprig device of injectable bone cement is finished whole connections, can connect injector for medical purpose this moment by 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 by 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 the metal manufacturing, 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, forbidden to use the treatment of pedicle nail technology, the hollow staple device of injectable bone cement is by 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 by 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, provide the following drawings at this paper, and described accompanying drawing has been carried out reference.Should be noted that given accompanying drawing only as an example with preferred implementation, the scope defined 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 and union joint 3 constitute.Described hollow pedicle screw 1 is provided with through hole, promptly comprise a hollow endoporus 4, injecting pathway as the perfusion bone cement, described hollow pedicle screw 1 also comprises one 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, be in 60 °～180 ° at angle at described screw rod 5 axis directions between described side opening 7 adjacent holes, described side opening 5 is used for the directed bone cement of injecting in pedicle of vertebral arch, 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 of two sections different-diameters, 11, a bigger hole 10 is used for closely cooperating with union joint 3 in the described cylindrical hole, a less hole 11 is set to consistent with hollow endoporus 4 sizes of hollow pedicle screw 1 in the described cylindrical hole, 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., described union joint 3 one ends are arranged to cylindrical bar 13, described 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, described union joint 3 other ends are provided with the female Luer 15 of a standard, 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 described 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 make.
Claims (5)
1. the hollow staple device of an injectable bone cement is characterized in that being made 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 externally threaded screw rod and the head that the rectangle female thread is arranged, described screw head zone is provided with side opening, 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, a bigger hole is used for closely cooperating with union joint in the described cylindrical hole, it is consistent that a less hole is set in the hollow with the hollow pedicle screw hole size in the described cylindrical hole, and described intermediate comprises the cylindrical conical nose that an inner conical surface that is used for the hollow pedicle screw fits; The first end of described connection is arranged to cylindrical bar, described cylindrical bar is used for closely cooperating with the cylindrical hole of intermediate, described union joint middle part comprises one section rectangular thread, described rectangular thread matches with the rectangle female thread head of hollow pedicle screw, the described union joint other end is provided with the female Luer of a standard, and null interface promptly comprised a hollow endoporus during described union joint also was set to.
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 make.
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, the hollow endoporus that it is characterized in that described union joint is sized to the hollow endoporus unanimity with the hollow pedicle screw.
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 being filled with 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 being filled with bone cement |
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| Publication Number | Publication Date |
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| CN102018564A true CN102018564A (en) | 2011-04-20 |
| CN102018564B CN102018564B (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105977630A Active CN102018564B (en) | 2010-12-20 | 2010-12-20 | Hollow U-shaped nail device capable of being filled with bone cement |
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Cited By (4)
| 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 |
| CN109276303A (en) * | 2018-11-27 | 2019-01-29 | 西安市红会医院 | Cement reaction screw and bone cement injection device |
| CN109745151A (en) * | 2017-11-02 | 2019-05-14 | 台湾微创医疗器材股份有限公司 | Inject the connection unit of bone filler |
| 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 |
Citations (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 | Bone 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 |
-
2010
- 2010-12-20 CN CN2010105977630A patent/CN102018564B/en active Active
Patent Citations (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 | Bone 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 |
Cited By (4)
| 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 |
| CN109745151A (en) * | 2017-11-02 | 2019-05-14 | 台湾微创医疗器材股份有限公司 | Inject the connection unit of bone filler |
| CN109276303A (en) * | 2018-11-27 | 2019-01-29 | 西安市红会医院 | Cement reaction 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 |
Also Published As
| Publication number | Publication date |
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| CN102018564B (en) | 2012-05-09 |
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