CN201958990U - Hollow U-shaped nail device capable of injecting bone cement - Google Patents
Hollow U-shaped nail device capable of injecting bone cement Download PDFInfo
- Publication number
- CN201958990U CN201958990U CN2010206705747U CN201020670574U CN201958990U CN 201958990 U CN201958990 U CN 201958990U CN 2010206705747 U CN2010206705747 U CN 2010206705747U CN 201020670574 U CN201020670574 U CN 201020670574U CN 201958990 U CN201958990 U CN 201958990U
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- hollow
- pedicle screw
- hole
- bone cement
- cylindrical
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Abstract
The utility model provides a hollow U-shaped nail device capable of injecting bone cement, and relates to an internal fixation device for bone surgery. The hollow U-shaped nail device capable of injecting bone cement is specially used for treating vertebral body diseases caused by spinal instability, vertebral body compression fractures and osteoporosis, and is composed of a hollow pedicle screw, an intermediate, and a connector; a through hole is formed in the hollow pedicle screw, that is, a hollow inner hole is included; the hollow pedicle screw further comprises a screw rod with external threads and a head part with rectangular internal threads; side holes are formed in the area of the head part of the screw rod; a cylindrical hole and an inner cone hole are formed at the head part with the rectangular internal threads; the inner cone hole is used for connecting the intermediate; the intermediate is matched with the inner hole at the head part of the hollow pedicle screw; a cylindrical rod is arranged at one end of the connector, which is used for being in close fit with the cylindrical hole on the intermediate; the rectangular threads are matched with the head part with the rectangular internal threads of the hollow pedicle screw; and a standard Ruhr interface is arranged at the other end of the connector.
Description
Technical field
What the hollow staple device of this utility model injectable bone cement 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
This utility model purpose is at above-mentioned weak point, and a kind of hollow staple device of injectable bone cement is provided, and 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 utility model:
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 this utility model better and to understand practical application of the present utility model, 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 a female Luer, 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 |
|---|---|---|---|
| CN2010206705747U CN201958990U (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 |
|---|---|---|---|
| CN2010206705747U CN201958990U (en) | 2010-12-20 | 2010-12-20 | Hollow U-shaped nail device capable of injecting bone cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201958990U true CN201958990U (en) | 2011-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206705747U Expired - Lifetime CN201958990U (en) | 2010-12-20 | 2010-12-20 | Hollow U-shaped nail device capable of injecting bone cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201958990U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102018564A (en) * | 2010-12-20 | 2011-04-20 | 常州市康辉医疗器械有限公司 | Hollow U-shaped nail device capable of being filled with bone cement |
| CN102151170A (en) * | 2011-03-02 | 2011-08-17 | 中国人民解放军第三军医大学第一附属医院 | Universal pedicle screw pressure injection system device |
| CN103405268A (en) * | 2013-02-26 | 2013-11-27 | 张雪松 | Pedicle screw reinforcing system adopting minimally invasive technology and high-pressure bone cement injection technology |
| CN104644256A (en) * | 2015-03-13 | 2015-05-27 | 邱正奭 | Internal fixation hollow needle for patellar fracture |
| CN112426218A (en) * | 2020-11-23 | 2021-03-02 | 常州集硕医疗器械有限公司 | Bone cement fixation device and method |
-
2010
- 2010-12-20 CN CN2010206705747U patent/CN201958990U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102018564A (en) * | 2010-12-20 | 2011-04-20 | 常州市康辉医疗器械有限公司 | Hollow U-shaped nail device capable of being filled with bone cement |
| CN102151170A (en) * | 2011-03-02 | 2011-08-17 | 中国人民解放军第三军医大学第一附属医院 | Universal pedicle screw pressure injection system device |
| CN102151170B (en) * | 2011-03-02 | 2012-09-26 | 中国人民解放军第三军医大学第一附属医院 | Universal pedicle screw pressure injection system device |
| CN103405268A (en) * | 2013-02-26 | 2013-11-27 | 张雪松 | Pedicle screw reinforcing system adopting minimally invasive technology and high-pressure bone cement injection technology |
| CN104644256A (en) * | 2015-03-13 | 2015-05-27 | 邱正奭 | Internal fixation hollow needle for patellar fracture |
| CN112426218A (en) * | 2020-11-23 | 2021-03-02 | 常州集硕医疗器械有限公司 | Bone cement fixation device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20120509 |