CN2543495Y - Novel cervical vertebrae front self-locking internal fixator - Google Patents
Novel cervical vertebrae front self-locking internal fixator Download PDFInfo
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- CN2543495Y CN2543495Y CN 02215586 CN02215586U CN2543495Y CN 2543495 Y CN2543495 Y CN 2543495Y CN 02215586 CN02215586 CN 02215586 CN 02215586 U CN02215586 U CN 02215586U CN 2543495 Y CN2543495 Y CN 2543495Y
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Abstract
The utility model belongs to the technical field of a medical machinery device, in particular to a novel cervical vertebrae front self-locking internal fixator. At present, the design level of used relevant products is relatively low and the manufacturing technique is too rough to be promoted in the market. The utility model provides a novel cervical vertebrae front self-locking internal fixator which is characterized in that the fixating system comprises a plate-shaped main body(10), a plurality of single-surface skin-material bone screws(20) and a plurality of tight-locking screws(30). Wherein, the single-surface skin-material bone screws(20) and the tight-locking screws(30) are connected with the plate-shaped main body(10). The utility model with excellent biologic properties can timely build up the stability of a cervical vertebra. The skin-material bone screws(20) have a double tight-locking organism with overall material surface processed with nitridation handling. The plate-shaped main body(10) is a low cutting mark. The auxiliary machines have simple but complete operation. Therefore, the novel cervical vertebrae front self-locking internal fixator can be extensively used for combined fixating treatment in front surgery vertebrae chambers of the diseases such as a cervical vertebrae degradation, wound and tumor.
Description
Technical field
This utility model relates to technical field of medical instruments, is specifically related to the preceding road self-locking of a kind of novel cervical vertebra inner fixing device.
Background technology
At present, modern cervical vertebra surgery diseases such as the preceding road of extensive use Reconstruction treatment cervical vertebra degenerated, wound and tumor.But because of importance and particularity that cervical vertebra is dissected, the complication of operation is more sees, and can cause spinal cord injury.Wherein most common complication is the loosening of postoperative plant bone mass and merges failure, especially multi-segmental cervical vertebra reconstruction.From Bohler first Application standard bone plate row anterior cervical fixation postoperative in 1964, the spinal surgery doctor found that the preceding road strong internal fixation of cervical vertebra can increase the rigidity of structure, and can reduce above-mentioned complication.Europe began to use the capable anterior cervical fixation art of H shape steel plate in 1975.Hollow titanium screw steel plate system is applied to decorative sursery by Raveh, through Switzerland's Morscher improved application in cervical vertebra.Morscher had reported the clinical effectiveness of using present technique in 1986.After this titanium alloy self-locking steel plate screw system is widely used in cervical vertebra and rebuilds.The stability that the anterior cervical vertebrae internal fixation system provides can make patient avoid halo external fixation or way of escape plasty.Biomechanics Research shows anterior plate system and way of escape steel wire in the spinal trauma model, and the former anti-stretching force and lateral bending power are better than steel wire.Can use the patient of anterior plate systematic treating spinal column front pillar and rear portion ligament injury separately.Zdeblick etc. adopt the above fusion of three sections of goat scale-model investigation cervical vertebra, adopt from body and allograph bone, relatively use or do not use the biomechanics and the histology result of anterior plate system.Studies show that the anterior plate system can increase the bone fusion rate, and can increase the anti-spin intensity of cervical vertebra, axial load and anti-stretching-Qu Li.Human clinical's application result shows use anterior plate system when multi-segmental merges, and then pseudarthrosis, delay fusion and plant bone mass slippage rate obviously descend.After the decompression of cervical vertebra multi-segmental, the arm of force repeated load of long steel plate can be with screw lock more than the sections as working as 3, and especially at distal vertebral body, this fusion for plant bone mass is favourable.
Increasingly extensive because of the clinical practice of anterior cervical vertebrae internal fixation system, its curative effect has also obtained generally acknowledging of clinicist.Because of the design and the manufacturing of this system relates to high-tech sectors such as materialogy, biomechanics, manufacturing technology and surgical technic, and contain huge economic.So American-European developed country has all developed the anterior cervical vertebrae internal fixation system of independent intellectual property right.Kind of an external product enters domestic surplus in the of existing ten at present, wherein, product commonly used comprises: a kind of Orozlo system and a kind of Caspar system are arranged, they are that non-load disperses steel plate, so need two-sided os integumentale screw, may bring the loosening of screw or slide when shortening this bone-plate structure, especially loosening, the fracture of screw or steel plate extracts.Penetrating the rear side cortical bone has certain technical difficulty and may Spinal Cord, but is necessary for these systems, can reduce the loosening of screw.Be fixed on new cervical spine locking steel plate on the steel plate (cervical spine locking plate, CSLP), system has excellent biological compatibility and corrosion resistance by pure titanium manufacturing screw is strong for avoiding using bilateral os integumentale screw, AO company to develop.Its locking device is that the swell fixture by the screw afterbody connects as one steel plate and screw.Also have a kind of Orion anterior cervical vertebrae internal fixation system with lock in addition, it is to be produced by Sofamor-Danek company, also is present domestic most widely used anterior cervical vertebrae internal fixation system.This system has drawn some mature technologies of anterior plate fixation development, as good biomechanical strength, it has narrower width is not only arranged, only 18mm also has lower incisura, is 2mm, screw-locking device, different steel plate lengths and screw length are satisfying different needs, but aspects such as steel plate pre-bending, so obtained world wide clinicist's approval.We can say the application at home of above-mentioned anterior cervical vertebrae internal fixation system, improved the level of domestic spinal surgery, a large amount of clinical intractable cases have been solved, but some problems have in use also been brought, mainly comprise: cost an arm and a leg, its average price is about 15000 yuan of RMB, and general compatriots are difficult to bear; Design basis is westerner's anatomical documentation, therefore can not meet compatriots' body fully; Assistive device is many, complicated operation.
Spinal implant material at present commonly used has two kinds: medical stainless steel and titanium.Rustless steel is higher than 12 times of the elastic modelling quantity of bone, and titanium alloy then is 6 times.Titanium has better biocompatibility and corrosion resistance than rustless steel.The latter's characteristic also comprises: high strength, light specific gravity, good toughness and fatigue life prolong, so now become the main material of orthopaedics implant.But the processing of titanium alloy and handle complicatedly, the specification requirement height has only the production and processing of having the ability of minority developed country at present.
In recent years, some spinal surgery doctors and medical apparatus and instruments producer that China is domestic also began to develop Related product in succession, but design level is lower, and especially manufacturing process is coarse, so fail to obtain to promote.
Summary of the invention
The anterior cervical vertebrae self-locking internal fixation system that purpose of design of the present utility model is exactly a kind of compatriots' of meeting anatomical features of exploitation, material property is superior, design principle is advanced, manufacturing process is higher, cheap.
For achieving the above object, this utility model provides the preceding road self-locking of a kind of novel cervical vertebra inner fixing device, and it comprises one by a titanium alloy spherical curve plate-like body, many pieces of titanium alloy single face os integumentale screws and the many pieces of systems that the titanium alloy lock-screw is formed.Wherein, described plate-like body is a spherical structure, flexibility meets the human cervical spine physiologic radian, and multiple length is arranged to satisfy different needs, two os integumentale screw holes and a lock-screw hole are respectively arranged at the two ends of described main board, the main board middle body is to have the rectangular configuration unit of a plant bone mass fixing hole to constitute by the center, and is individual by 0-6 according to the number of the different rectangle units of plate body length.By four pieces of single face os integumentale screws plate body and cervical vertebral body are fixed, compressed the os integumentale screw afterbody and plate body is rigidly connected, with screw plant bone mass is fixed by the plant bone mass fixing hole by two pieces of lock-screws.
The design and the processing features of the preceding road self-locking of a kind of novel cervical vertebra inner fixing device that this utility model provides mainly contain: it has drawn the mature technology of domestic and international multiple product; Meet compatriots' cervical vertebra anatomical features; All material adopts the titanium alloy that meets the GB/T13870-1997 standard, has excellent biological compatibility, corrosion resistance and nonmagnetic, and feasible MRI checks; Good biomechanical property can be rebuild cervical stability immediately; Os integumentale screw has dual locking mechanism; The all capable nitrogen treatment of whole material surfaces; Plate body is low incisura; Assistive device is succinct, and is simple to operate; Titanium alloy material treatment technology advanced person; All the apparatus appearance colour is bright-coloured, and the color recognition reaction is arranged.
Principal indication of the present utility model has: relate to cervical vertebral body part or inferior full excision, and need bone-graft fusion, rebuild the cervical stability person.Relate to the cervical vertebral body sections two above persons of sections.Pathological changes can be diseases such as degenerated, wound, tumor, prolapse of cervical intervertebral disc and tuberculosis.
Below in conjunction with accompanying drawing and embodiment this utility model is described in further detail:
Description of drawings
The plate-like body front view that Fig. 1 provides for this utility model
The plate-like body side sectional view that Fig. 2 provides for this utility model
The os integumentale screw structural representation that Fig. 3 provides for this utility model
The lock-screw structural representation that Fig. 4 provides for this utility model
The specific embodiment
The preceding road self-locking of a kind of novel cervical vertebra inner fixing device that this utility model provides comprises a titanium alloy spherical curve plate-like body 10, many pieces of titanium alloy single face os integumentale screws 20 and many pieces of titanium alloy lock-screws 30, wherein, above-mentioned many pieces of titanium alloy single face os integumentale screws 20 and many pieces of titanium alloy lock-screws 30 can link to each other with above-mentioned titanium alloy spherical curve plate-like body 10.
As shown in Figure 1, there are os integumentale screw and lock-screw zone A in the two ends of the plate-like body 10 that this utility model provides, and this is the fixed structure of plate body, and the centre is plate-like body middle body B.Wherein, comprise 2, one lock-screw holes 3, two os integumentale screw holes in above-mentioned two A districts respectively, nail periphery, hole is a groove area 1, lock-screw head of a nail groove scope 7.During installation system, at first two pieces of os integumentale screws 20 are inserted through cortex bone screw 2, one piece of lock-screw 30 is 3 fixing through the lock-screw hole, and three pieces of screws nail tails are imbedded groove area 1, and the plate body peripheral profile is an arc 4.There is a plant bone mass fixing hole 5 at the center in plate-like body middle body B district, constitutes a rectangular configuration unit 6, is 0-6 according to the number of the different rectangle units of plate body length.The length range of plate-like body 10 is 20.0-80.0mm.
As shown in Figure 2, the visible plate-like body 10 of this utility model main body side-looking is the arc plate body, and the scope of thickness D is 1.0-3.0mm, and the radian of this plate-like body 10 meets human cervical spine physiology lordosis.
As shown in Figure 3, the os integumentale screw 20 that provides of this utility model can be divided into the head of a nail 21, nail tail 22, nail body 23 successively.Wherein said nail tail 22 is no helicitic texture, can prevent that screw from withdrawing from.Screw length is 10.0-20.0mm according to the scope that enters the vertebral body distance, and its diameter range is 3.5-4.5mm.
As shown in Figure 4, the lock-screw 30 that provides of this utility model can be divided into nut 31 and full thread nail body 32 successively.Described nut 31 diameter ranges are 1.0-16.0mm., and its coverage can be pressed in the head of a nail 21 of os integumentale screw 20 in the plate body 10.
Claims (5)
1, the preceding road self-locking of a kind of novel cervical vertebra inner fixing device, it is characterized in that this fixture comprises a plate-like body (10), many pieces of single face os integumentale screws (20) and many pieces of lock-screws (30), wherein, above-mentioned many pieces of single face os integumentale screws (20) and many pieces of lock-screws (30) can link to each other with above-mentioned plate-like body (10).
2, the preceding road self-locking of a kind of novel cervical vertebra according to claim 1 inner fixing device is characterized in that there are os integumentale screw and lock-screw zone A in the two ends of described plate-like body (10), and the centre is plate-like body middle body B; Wherein, comprise two os integumentale screw holes (2) respectively in above-mentioned two A districts, a lock-screw hole (3), nail periphery, hole is a groove area (1), lock-screw head of a nail groove scope (7); There is a plant bone mass fixing hole (5) at the center in above-mentioned middle body B district, constitutes a rectangular configuration unit (6), is 0-6 according to the number of the different rectangle units of plate body length (6).
3, the preceding road self-locking of a kind of novel cervical vertebra according to claim 1 inner fixing device, it is characterized in that described plate-like body (10) is the arc plate body, be preceding convex, the length range of above-mentioned plate-like body (10) is 20.0-80.0mm, and thickness range is 1.0-3.0mm.
4, the preceding road self-locking of a kind of novel cervical vertebra according to claim 1 inner fixing device is characterized in that described single face os integumentale screw (20) can be divided into the head of a nail (21), nail tail (22), nail body (23) successively; Wherein, described nail tail (22) is no helicitic texture, and screw length is 10.0-20.0mm according to the scope that enters the vertebral body distance, and diameter range is 3.5-4.5mm.
5, the preceding road self-locking of a kind of novel cervical vertebra according to claim 1 inner fixing device is characterized in that described lock-screw (30) can be divided into nut (31) and full thread nail body (32) successively; Described nut (31) diameter range 1.0-16.0mm., its coverage can be pressed in the head of a nail (21) of os integumentale screw (20) in the plate body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215586 CN2543495Y (en) | 2002-02-05 | 2002-02-05 | Novel cervical vertebrae front self-locking internal fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215586 CN2543495Y (en) | 2002-02-05 | 2002-02-05 | Novel cervical vertebrae front self-locking internal fixator |
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| Publication Number | Publication Date |
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| CN2543495Y true CN2543495Y (en) | 2003-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02215586 Expired - Fee Related CN2543495Y (en) | 2002-02-05 | 2002-02-05 | Novel cervical vertebrae front self-locking internal fixator |
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| CN (1) | CN2543495Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100349552C (en) * | 2005-10-19 | 2007-11-21 | 中国人民解放军第三军医大学第一附属医院 | Front self locking fixing pin plate for lumbar vertebra |
| CN103860245A (en) * | 2014-03-22 | 2014-06-18 | 常州市康辉医疗器械有限公司 | Anti-withdrawing stable cervical vertebra posterior single-opening door sheet nailing system |
| CN105326543A (en) * | 2014-08-08 | 2016-02-17 | 冯骄阳 | Memory alloy bone screw type anterior cervical steel plate |
| USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
| CN108742953A (en) * | 2018-03-19 | 2018-11-06 | 唐小毛 | A kind of minimally invasive double cortex centrum screw self-stabilization type " ear " type lumbar intervertebral fusion devices |
-
2002
- 2002-02-05 CN CN 02215586 patent/CN2543495Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100349552C (en) * | 2005-10-19 | 2007-11-21 | 中国人民解放军第三军医大学第一附属医院 | Front self locking fixing pin plate for lumbar vertebra |
| CN103860245A (en) * | 2014-03-22 | 2014-06-18 | 常州市康辉医疗器械有限公司 | Anti-withdrawing stable cervical vertebra posterior single-opening door sheet nailing system |
| CN105326543A (en) * | 2014-08-08 | 2016-02-17 | 冯骄阳 | Memory alloy bone screw type anterior cervical steel plate |
| USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
| USD798455S1 (en) | 2014-10-08 | 2017-09-26 | Nuvasive, Inc. | Anterior cervical bone plate |
| CN108742953A (en) * | 2018-03-19 | 2018-11-06 | 唐小毛 | A kind of minimally invasive double cortex centrum screw self-stabilization type " ear " type lumbar intervertebral fusion devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |