CN202568417U - Anterior cervical self-locking steel plate system - Google Patents
Anterior cervical self-locking steel plate system Download PDFInfo
- Publication number
- CN202568417U CN202568417U CN 201220153176 CN201220153176U CN202568417U CN 202568417 U CN202568417 U CN 202568417U CN 201220153176 CN201220153176 CN 201220153176 CN 201220153176 U CN201220153176 U CN 201220153176U CN 202568417 U CN202568417 U CN 202568417U
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- steel plate
- screw
- anterior cervical
- locking
- screws
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Abstract
The utility model relates to the field of medical instrument technology, in particular to an anterior cervical self-locking steel plate system. At preset, clinical commonly-used restrictive steel plates and non-restrictive steel plates are not suitable for treatment on degenerative cervical spondylosis and cervical cancers caused by senile osteoporosis and wounds. The anterior cervical self-locking steel plate system comprises a steel plate body, screw holes, polyethylene rings, screws and the like. When the screws are screwed into the screw holes during operation, the polyethylene rings in the screw holes are in close pressing fit with threads at the tails of the screws to be cut into corresponding locking threads, so that the screws are screwed into the steel plate and locked with the steel plate in one step, the screws and the steel plate are integrated, and screwing out and loosening of the screws are avoided. The anterior cervical self-locking steel plate system is simple in structure and convenient to operate. According to the anterior cervical self-locking steel plate system, the steel plate body has a good operation field and multi-direction and flexible screw inlet angles, a firm and stable anterior cervical self-locking device is provided for clinical doctors, operation process is speeded up, operation quality is improved, and pain of patients is reduced.
Description
Technical field
This utility model relates to technical field of medical instruments, is a kind ofly to be used for anterior cervical vertebrae that the anterior cervical operation fixation and grafting uses from locking steel plate system.
Background technology
Progress along with China's economic development and modern medical service level; State's people living life-span significantly prolongs; The sickness rate of senile degenerated cervical spondylosis, cervical vertebra wound and cervical vertebral body metastatic tumo(u)r rises year by year, for this type of disease except the compressing that will remove spinal cord or nerve root, the alleviating pain, important also need rebuild spinal column normal anatomical structures, stabilizing spine.Since Bohler at first reported use throat road steel plate screw internal fixation in 1964, at present existing anterior plate fixation, clinical these two types of restricted steel plate and the non-limiting steel plates that mainly contain commonly used than polymorphic type.
The non-limiting steel plate of cervical vertebra is claimed the power type steel plate again, is meant that screw through fixing vertebral body exists on the angle with respect to steel plate or locational fine motion reaches the effect of power pressurization.The degenerated cervical spondylosis that causes for above-mentioned senile osteoporosis and the treatment of cervical vertebra tumor and wound, spinal column needs strong, stable internal fixation steel plate, and therefore non-limiting steel plate is obviously inapplicable.
At present outside the screw that clinical restricted steel plate commonly used mainly adopts, lock device, behind the operation technique light plate screw-driving, also need tighten the outer locking nut of steel plate again, reach screw and steel plate one.The shortcoming of this design is except having increased surgical operation step, and outer simultaneously locking device occupies certain steel plate visual field and bone grafting window again, influences the healing of operation time and postoperative bone grafting.
The utility model content
The purpose of this utility model provides a kind of firm anterior cervical vertebrae simple in structure, easy to use, strong from locking the steel plate screw system.
This utility model provides a kind of anterior cervical vertebrae from locking steel plate system, comprises steel plate body, polyethylene ring, screw;
4-6 screw arranged on the steel plate body; Preferably, the border width of steel plate body is designed to 1mm;
Insert the polyethylene ring in the screw on the steel plate body, be screwed;
The polyethylene ring has the mobility of 15-30 degree direction in screw, and the taper that the polyethylene ring is about 20 degree becomes the angle;
The nail portion of screw is an external thread structure, and the afterbody of screw is provided with interior hexagonal groove, can mate with the hex(agonal)screw cutter.
The steel plate of this utility model, screw length can be processed the different length model as required.
Preferably, steel plate body thickness is 2.5mm, and intermediate width is 14mm, and Breadth Maximum is 16mm at the screw place; Screwhole diameter 5.5mm; Polyethylene ring thickness 1.2mm; The external thread diameter 5mm of screw nail portion, interior hexagonal groove diameter 3mm.
The anterior cervical vertebrae of this utility model is when locking the use of steel plate screw system operation; Earlier the polyethylene ring is inserted in the screw on the steel plate body; Make the polyethylene ring that the mobility of 15-30 degree direction arranged in screw, and the taper that the polyethylene ring is about 20 degree go into to follow closely angle; With the hex(agonal)screw cutter screw is screwed in the screw on the steel plate body then; At this moment; The polyethylene ring in the screw and the external screw thread of screw nail portion closely are press-fitted and are cut to corresponding locking screw; Make screw and steel plate be screwed into locking one step completion, screw and steel plate are linked to be an integral body, can not move back nail, get loose.
The system structure of this utility model is simple, easy to operate; Plate body has good surgical field of view and multi-directionly advances to follow closely angle flexibly, and the screw design of the low incisura of steel plate body has reduced ossified formation of the contiguous intervertebral space of postoperative; For the clinician provides strong firm anterior cervical vertebrae self-locking device; Accelerate the operation progress, improved the operation quality, reduced the patient suffering.
When being particularly useful for the operation of senile degenerated cervical spondylosis, cervical vertebra wound and cervical vertebral body metastatic tumo(u)r, rebuilds this utility model spinal column normal anatomical structures and stabilizing spine.
This utility model cost is low, function is strong, application prospect is wide, is expected to the production of industrialization in the future, to solve the clinical practice requirements of one's work.
Description of drawings
Fig. 1 is the structural representation of the steel plate body of this utility model
Fig. 2 is the structural representation of the screw of this utility model
Fig. 3 is built in the structural representation of screw for the polyethylene ring of this utility model
Fig. 4 is the system structure sketch map of this utility model
Wherein: steel plate body 1, screw 2, polyethylene ring 3, screw 4, interior hexagonal groove 5.
The specific embodiment
Elaborate below in conjunction with the enforcement of embodiment and accompanying drawing to this utility model; Following examples are to be to implement under the prerequisite with this utility model technical scheme; Provided detailed embodiment, but the protection domain of this utility model is not limited to following embodiment.
Embodiment 1: a kind of anterior cervical vertebrae is from locking steel plate system
Shown in Fig. 1 to 4, a kind of anterior cervical vertebrae comprises steel plate body 1, polyethylene ring 3, screw 4 from locking steel plate system; 6 screws 2 are arranged on the steel plate body, and the border width of steel plate body is designed to 1mm; Insert polyethylene ring 3 in the screw on the steel plate body, be screwed; The nail portion of screw 4 is an external thread structure, and the afterbody of screw is provided with interior hexagonal groove 5.
Steel plate body of this utility model and screw adopt titanium alloy material to process.
Steel plate body thickness 2.5mm, plate body intermediate width 14mm, plate body is Breadth Maximum 16mm at the screw place.Screwhole diameter 5.5mm, polyethylene ring thickness 1.2mm, the taper that is about 20 degree becomes the angle.The external thread diameter 5mm of screw nail portion, interior hexagonal groove diameter 3mm.Screw thread external diameter 4mm, internal diameter 2mm.
When operation is used, earlier the polyethylene ring is inserted in the screw on the steel plate body, make the polyethylene ring that the mobility of 15-30 degree direction arranged in screw, and the taper that the polyethylene ring is about 20 degree goes into to follow closely angle; With the hex(agonal)screw cutter screw is screwed in the screw on the steel plate body then; At this moment; The polyethylene ring in the screw and the external screw thread of screw nail portion closely are press-fitted and are cut to corresponding locking screw, make screw and steel plate body be screwed into locking one step completion, and screw and steel plate body are linked to be an integral body.
Claims (4)
1. an anterior cervical vertebrae is characterized in that from locking steel plate system this anterior cervical vertebrae comprises steel plate body (1), polyethylene ring (3), screw (4) from locking steel plate system; 4-6 screw (2) arranged on the steel plate body, insert polyethylene ring (3) in the screw, be screwed; Polyethylene ring (3) has the mobility of 15-30 degree direction in screw, and the taper that polyethylene ring (3) is about 20 degree becomes the angle.
2. a kind of anterior cervical vertebrae according to claim 1 is characterized in that from locking steel plate system the border width of steel plate body is 1mm.
3. a kind of anterior cervical vertebrae according to claim 1 is characterized in that from locking steel plate system the nail portion of screw (4) is an external thread structure, and the afterbody of screw is provided with interior hexagonal groove (5).
4. lock steel plate system certainly according to claim 1,2 or 3 described a kind of anterior cervical vertebraes, it is characterized in that steel plate body (1) thickness is 2.5mm, intermediate width is 14mm, and Breadth Maximum is 16mm at the screw place; Screw (2) diameter 5.5mm; Polyethylene ring (3) thickness 1.2mm; The external thread diameter 5mm of screw (4) nail portion, interior hexagonal groove (5) diameter 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153176 CN202568417U (en) | 2012-04-12 | 2012-04-12 | Anterior cervical self-locking steel plate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153176 CN202568417U (en) | 2012-04-12 | 2012-04-12 | Anterior cervical self-locking steel plate system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202568417U true CN202568417U (en) | 2012-12-05 |
Family
ID=47237880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220153176 Expired - Fee Related CN202568417U (en) | 2012-04-12 | 2012-04-12 | Anterior cervical self-locking steel plate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202568417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103462677A (en) * | 2013-09-26 | 2013-12-25 | 上海三友医疗器械有限公司 | Internal fixation system of spine and anchoring structure of internal fixation system of spine |
-
2012
- 2012-04-12 CN CN 201220153176 patent/CN202568417U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103462677A (en) * | 2013-09-26 | 2013-12-25 | 上海三友医疗器械有限公司 | Internal fixation system of spine and anchoring structure of internal fixation system of spine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150412 |
|
| EXPY | Termination of patent right or utility model |