CN101849856A - Locking device used for cervical steel plate - Google Patents
Locking device used for cervical steel plate Download PDFInfo
- Publication number
- CN101849856A CN101849856A CN 201010187526 CN201010187526A CN101849856A CN 101849856 A CN101849856 A CN 101849856A CN 201010187526 CN201010187526 CN 201010187526 CN 201010187526 A CN201010187526 A CN 201010187526A CN 101849856 A CN101849856 A CN 101849856A
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- China
- Prior art keywords
- steel plate
- ball collar
- locking device
- screw
- cervical
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Abstract
The invention discloses a locking device for a cervical steel plate. The device is characterized by comprising a circular hole and a spherical ring positioned on the cervical steel plate; the hole wall of the circular hole is of a cambered surface; the spherical ring is arranged in the circular hole; the shape of the external wall of the spherical ring is of a spherical cambered surface which is adapted to the hole wall of a positioning circular hole; the spherical ring can revolve in the circular hole in a certain range; the internal wall of the spherical ring is provided with a connecting thread which can be locked with a matched screw of which the head is provided with a thread; and a gap of the spherical ring is provided with a cylindrical pin which is arranged on a plate body and is used for limiting the spherical ring to revolve in the certain range. By using the device, the screw can be locked by an operator after adjusting the implantation direction of the screw according to actual requirement, so that the fixation intensity of a screw plate is improved and the steel plate can be fixed stably. Therefore, a treatment effect can be improved.
Description
Technical field
The present invention relates to a kind of locking device, more particularly, relate to a kind of fixed locking device of cervical operation steel plate that is applied to.
Technical background
Regular meeting need fix skeleton to play strong fixed effect with steel plate to medical field diseases such as fracture of cervical vertebra, dislocation or regression being undergone surgery often, helps the fast quick-recovery of damaged part.Existing steel plate is tightened in by the fixing hole on the steel plate by screw usually to be needed on the fixed skeleton.But owing to need fixed skeleton not have regular shape usually, and steel plate that is used for fixing and screw use sturdy material to make, can only axially hammering into when hammering into screw along the fixing hole on the steel plate, can not be according to the direction that hammers into of the shape adjustments screw of operation needs and skeleton, easily cause the constant intensity deficiency of screw, the operation steel plate is fixing firm inadequately.
Summary of the invention
The object of the present invention is to provide a kind of locking device that is used for cervical steel plate, this device can make the operator according to actual needs with the direction that hammers into of the shape adjustments screw of skeleton, improve the constant intensity of screw, steel plate can firmly be fixed, to improve therapeutic effect.
Above-mentioned purpose can be realized by following technological means: a kind of locking device that is used for cervical steel plate, comprise be positioned on the cervical steel plate circular port and ball collar, the hole wall of described circular port is a cambered surface, ball collar is located in the circular hole, the outer wall of described ball collar is shaped as and the suitable spherical arc of the hole wall of positioning round orifice, and the inwall of described ball collar is provided with connecting thread.Ball collar can be done ring in circular hole change, thereby lock screw can be implanted by different directions.
The outer wall surface of described ball collar has the friction stricture of vagina.Described friction stricture of vagina is used for increasing the frictional force between the circular port on ball collar and the cervical steel plate, makes ball collar can keep adjusted state after its axis is adjusted to required angle, thereby plays the guide effect to screw.
Described locking device also comprises a spacer pin on the circular port hole wall that is fixed on cervical steel plate, and a side of described ball collar has a fracture breach; The projection of described spacer pin is limited in the fracture indentation, there of ball collar.When adjusting position or pedicle screw, ball collar can rotate in a circumferential direction along it under external force, and spacer pin can limit the circumferential rotation of ball collar, is convenient to tighten screw.
During use, user can rotate the tuning bar, making it have an externally threaded end screws in and rotates the tuning bar behind the screw thread on the ball collar inwall and adjust direction, because positioning round orifice and the mating surface between the ball collar on the steel plate are cambered surface, so ball collar can rotate to a plurality of directions, its axis can tilt with respect to steel plate, when user is observed ball collar and turned to suitable angle by the tuning bar of hollow, rotation tuning bar makes it have an externally threaded end and withdraws from ball collar.Last user uses apparatus that screw is screwed in and the implantation skeleton along ball collar axis direction at this moment, and steel plate is fixed.
Usefulness of the present invention is: user can be implanted dog screw after the axis direction of ball collar need being adjusted to suitable position by the tuning pole-footing again along the axial direction of the ball collar of adjusting, that is to say, user can be adjusted the implantation direction of screw as required, strengthen the constant intensity of screw, make the operation steel plate that steel plate can firmly be fixed, to improve therapeutic effect.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is the A-A view of Fig. 1.
Specific embodiment
As shown in Figure 1 to Figure 3, a specific embodiment of the present invention, be positioned at and offer positioning round hole 2 on the cervical vertebra locking steel plate 1, the hole wall of circular port 2 is a cambered surface, ball collar 3 and cylindrical spacer pin 4 are installed in the circular port 2, the outer wall of ball collar 3 is shaped as the spherical arc that the hole wall with circular port 2 matches, and the inwall of ball collar has connecting thread; The outer wall surface of ball collar 2 has the friction screw thread.
Concrete fixedly the time, use a hollow, wherein an end have can with the externally threaded tuning bar of threads engaged on ball collar 3 inwalls, making it have an externally threaded end screws in and rotates the tuning bar behind the screw thread on the ball collar inwall and adjust direction, because positioning round orifice and the mating surface between the ball collar on the steel plate are cambered surface, so ball collar can rotate to a plurality of directions, its axis can tilt with respect to steel plate, when user is observed ball collar and has been turned to suitable angle by the tuning bar of hollow, rotation tuning bar makes it have an externally threaded end and withdraws from ball collar.Last user uses apparatus that screw is implanted skeleton along ball collar axis direction at this moment, and steel plate is fixed.
Embodiments of the present invention are not limited thereto; according to foregoing of the present invention; ordinary skill knowledge and customary means according to this area; do not breaking away under the above-mentioned basic fundamental thought of the present invention prerequisite; can also make modification, replacement or the change of other various ways, all drop within the rights protection scope of the present invention.
Claims (5)
1. locking device that is used for cervical steel plate, it is characterized in that: comprise be positioned on the cervical steel plate circular port and ball collar, the hole wall of described circular port is a cambered surface, ball collar is located in the circular hole, the outer wall of described ball collar is shaped as and the suitable spherical arc of the hole wall of positioning round orifice, and the inwall of described ball collar is provided with connecting thread.
2. the locking device that is used for cervical steel plate according to claim 1 is characterized in that: a side of described ball collar has a fracture breach.
3. the locking device that is used for cervical steel plate according to claim 1 and 2 is characterized in that: the outer wall surface of described ball collar is provided with the friction stricture of vagina.
4. the locking device that is used for cervical steel plate according to claim 3 is characterized in that: also comprise a spacer pin on the circular port hole wall that is fixed on cervical steel plate, the projection of described spacer pin is limited in the fracture indentation, there of ball collar.
5. the locking device that is used for cervical steel plate according to claim 4 is characterized in that: described spacer pin is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010187526 CN101849856A (en) | 2010-05-24 | 2010-05-24 | Locking device used for cervical steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010187526 CN101849856A (en) | 2010-05-24 | 2010-05-24 | Locking device used for cervical steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101849856A true CN101849856A (en) | 2010-10-06 |
Family
ID=42801666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010187526 Pending CN101849856A (en) | 2010-05-24 | 2010-05-24 | Locking device used for cervical steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101849856A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486174A (en) * | 1993-02-24 | 1996-01-23 | Soprane S.A. | Fastener for the osteosynthesis of the spinal column |
| CN1582132A (en) * | 2001-12-24 | 2005-02-16 | 库尔斯恩蒂斯股份公司 | Device for reformig osteosynthesis |
| CN2879998Y (en) * | 2006-03-31 | 2007-03-21 | 天津正天医疗器械有限公司 | Nail hole locking structure for bone implanted product |
| CN201469395U (en) * | 2009-07-15 | 2010-05-19 | 苏州市百得医疗器械有限公司 | Condyle universal locking bone-knitting plate |
-
2010
- 2010-05-24 CN CN 201010187526 patent/CN101849856A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486174A (en) * | 1993-02-24 | 1996-01-23 | Soprane S.A. | Fastener for the osteosynthesis of the spinal column |
| CN1582132A (en) * | 2001-12-24 | 2005-02-16 | 库尔斯恩蒂斯股份公司 | Device for reformig osteosynthesis |
| CN2879998Y (en) * | 2006-03-31 | 2007-03-21 | 天津正天医疗器械有限公司 | Nail hole locking structure for bone implanted product |
| CN201469395U (en) * | 2009-07-15 | 2010-05-19 | 苏州市百得医疗器械有限公司 | Condyle universal locking bone-knitting plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101006 |