CN202078387U - Bionic anterior cervical dynamic stabilizer for vertebral subtotal resection - Google Patents
Bionic anterior cervical dynamic stabilizer for vertebral subtotal resection Download PDFInfo
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- CN202078387U CN202078387U CN201120077199XU CN201120077199U CN202078387U CN 202078387 U CN202078387 U CN 202078387U CN 201120077199X U CN201120077199X U CN 201120077199XU CN 201120077199 U CN201120077199 U CN 201120077199U CN 202078387 U CN202078387 U CN 202078387U
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- vertebral body
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- anterior cervical
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Abstract
A bionic anterior cervical dynamic stabilizer for vertebral subtotal resection comprises an upper vertebral connecting plate and a lower vertebral connecting plate, the upper vertebral connecting plate is composed of an upper front plate and an upper base plate which is connected with the upper front plate at a certain angle, the lower vertebral connecting plate is composed of a lower front plate and a lower base plate which is connected with the lower front plate at a certain angle, the upper base plate is perpendicularly connected with an upper central post, the lower base plate is perpendicularly connected with a lower central post, a spring ring is circularly wound to the upper central post and the lower central post prior to being connected with the upper vertebral connecting plate and the lower vertebral connecting plate, bottoms of the upper central post and the lower central post are matched with and tightly connected with the inner periphery of the spring ring while the diameters of the bottoms are reduced gradually towards a free side, the upper front plate and the lower front plate are both metal sheets protruding forwards, two parallel locking screw holes are arranged at the center of the upper front plate, and two parallel locking screw holes are arranged at the center of the lower front plate. The bionic anterior cervical dynamic stabilizer belonging to the technical field of medical instruments is designed bionically, and capable of highly simulating elastic motion of a cervical vertebra in the flexion and extension process.
Description
Technical field
This utility model belongs to technical field of medical instruments, is specifically related to a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy.
Background technology
For diseases such as fracture of cervical vertebra, regression, infection or tumors, usually need to carry out cervical vertebral body time full excision, to reach the purpose of thorough removing focus and spinal canal decompression.But thing followed problem is how cervical vertebra to be rebuild.Clinical common method for reconstructing roughly can be divided into two classes at present: a class is the bone-graft fusion internal fixation, and another kind of is the artificial vertebral body replacement.These methods can be rebuild the stability of cervical vertebra mostly well, but have the problem that the sections mobility completely loses of rebuilding, and therefore quite a few patient the sections intervertebral disc degeneration occurs closing on long term and quicken, even needs the situation of surgical procedure once more.
Therefore seek a kind of stability that can keep cervical vertebra after the cervical vertebral body subtotal ectomy, can keep its mobility again, the method for avoiding the adjacent segment regression to quicken, significant.
The domestic in recent years scholar of having has carried out useful exploration in this regard, but still can not obtain the elastic process of cervical vertebra moving cell.This utility model bends and stretches the dynamic stability device of elastic movement the process from a kind of altitude simulation cervical vertebra of bionics angle design.
Summary of the invention
The purpose of this utility model is from bionic angle, designs the anterior cervical vertebrae dynamic stability device that a kind of altitude simulation cervical vertebra bends and stretches the elastic movement in the process.
For achieving the above object, this utility model is by the following technical solutions:
A kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy, it is characterized in that: described system comprises vertebral body connecting plate, hypocentrum connecting plate, last center pillar, following center pillar and turn, wherein go up the vertebral body connecting plate by anepisternite with form with the upper substrate that anepisternite is connected at an angle, the hypocentrum connecting plate is by following front side board and form with the infrabasal plate that following front side board is connected at an angle; The upper substrate one side of anepisternite dorsad is connected with last center pillar, and last center pillar is vertical with upper substrate; Infrabasal plate descends the one side of front side board to be connected with following center pillar dorsad, and following center pillar is vertical with infrabasal plate; The turn two ends are connected with the hypocentrum connecting plate with last vertebral body connecting plate around behind last center pillar and the following center pillar respectively, and last center pillar is complementary with the turn internal diameter respectively with following center pillar substrate and closely is connected, and reduces gradually to free side diameter afterwards; Anepisternite and following front side board are the metal sheet that is to lordosis, and there are two parallel screw holes in anepisternite central authorities, and there are two parallel screw holes in following front side board central authorities;
Upper substrate and infrabasal plate are rectangle, and more smaller than the anterior cervical vertebrae vertebral body time formed bone groove area in full excision back, and thickness is 2-4mm.
Going up center pillar when the length requirement of last center pillar and following center pillar compresses for the turn limit does not contact with following center pillar.
In screw hole and the screw hole screw thread is arranged, for from the locking nail hole.
The composition of turn is carbon spring steel or alloy spring steel.
In the last vertebral body connecting plate, the angle between upper substrate and the anepisternite is less than 90 °, and is slightly less than upper vertebral body forward lower comer, i.e. the angle on two limits in vertebral body sagittal median plane the place ahead and bottom.
In the hypocentrum connecting plate, the angle between infrabasal plate and the following front side board is greater than 90 °, and goes up angle, the i.e. angle on two limits in vertebral body sagittal median plane the place ahead and bottom before being slightly less than the next vertebral body.
The steel wire diameter of turn is bigger, interpyramidal movable amplitude up and down in the time of guaranteeing that amplitude is near the normal flexion and extension of cervical vertebra under its stress.
The screw orientation of putting into screw hole is parallel with infrabasal plate with upper substrate respectively.
Advantage of the present utility model and effect are:
1) utilize the elastic telescopic of spring, the simulation intervertebral disc is stretched elastic movement in the process of bending at cervical vertebra, realizes " dynamic fixation ", avoids closing on the sections regression and quickens;
2) alternative traditional view with " artificial vertebral body " graft after the breakthrough vertebral body subtotal ectomy combines vertebral body and intercalated disc together, realizes the function of body vertebral body-intercalated disc motor unit;
3) substrate surface is beneficial to the fusion of prosthese and vertebral body coated with hydroxyapatite coating layer;
4) hold-down screw prevents skidding off of hold-down screw with the locking of self-locking form;
5) only regulate the model of prosthese by the length that turn is set, the miscellaneous part uniform specification is saved production cost.
Description of drawings:
Fig. 1 is the bionics anterior cervical vertebrae dynamic stability device front view that is used for the vertebral body subtotal ectomy;
Fig. 2 is the bionics anterior cervical vertebrae dynamic stability device side view that is used for the vertebral body subtotal ectomy;
Fig. 3 is that the bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy is overlooked or upward view;
Description of reference numerals:
1. go up vertebral body connecting plate, 2. center pillar under hypocentrum connecting plate, the last center pillar of 3a., the 3b., 4. front side board under turn, 1b. anepisternite, 1a. upper substrate, the 2b., 2a. infrabasal plate, 4. turn, 5a/5b. screw hole, the 6. angle between the angle between hydroxyapatite coating layer, A. upper substrate and the anepisternite, B. infrabasal plate and the following front side board.
The specific embodiment:
The present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the bionics anterior cervical vertebrae dynamic stability device front view that is used for the vertebral body subtotal ectomy, Fig. 2 is the bionics anterior cervical vertebrae dynamic stability device side view that is used for the vertebral body subtotal ectomy, Fig. 3 is that the bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy is overlooked or upward view, as shown in the figure, last vertebral body connecting plate 1 by anepisternite 1b with anepisternite 1b at an angle the upper substrate 1a that is connected of A form, angle A is less than 90 °, and is slightly less than upper vertebral body forward lower comer (angles on two limits in vertebral body sagittal median plane the place ahead and bottom); Hypocentrum connecting plate 2 by following front side board 2b with following front side board 2b at an angle the infrabasal plate 2a that is connected of B form, angle B is greater than 90 °, and be slightly less than the next vertebral body preceding on angle (angles on two limits in vertebral body sagittal median plane the place ahead and bottom).The material of last vertebral body connecting plate 1 and hypocentrum connecting plate 2 is titanium alloy, and is approaching with the elastic modelling quantity of bone.Upper substrate 1a and infrabasal plate 2a are rectangle, and more smaller than the anterior cervical vertebrae vertebral body time formed bone groove area in full excision back, and thickness is 2-4mm.The upper substrate 1a one side of anepisternite 1b dorsad is connected with last center pillar 3a, and last center pillar 3a is vertical with upper substrate 1a; Infrabasal plate 2a descends the one side of front side board 2b to be connected with following center pillar 3b dorsad, and following center pillar 3b is vertical with infrabasal plate 2a; Going up center pillar 3a when the length requirement of last center pillar 3a and following center pillar 3b is the compression of turn 4 limit does not contact with following center pillar 3b.The composition of turn 4 is carbon spring steel or alloy spring steel, and steel wire diameter is bigger, interpyramidal movable amplitude up and down in the time of can guaranteeing that amplitude is near the normal flexion and extension of cervical vertebra under its stress.Turn 4 two ends are connected with hypocentrum connecting plate 2 with last vertebral body connecting plate 1 around behind last center pillar 3a and the following center pillar 3b respectively, last center pillar 3a is complementary with turn 4 internal diameters respectively with following center pillar 3b substrate and closely is connected, reduce gradually to free side diameter afterwards, with guarantee that cervical vertebra bends and stretches or during lateral flexion center pillar can not clash into mutually with turn 4.Anepisternite 1b and following front side board 2b are the metal sheet that is to lordosis, and there are two parallel screw hole 5a in anepisternite 1b central authorities, and there are two parallel screw hole 5b in following front side board 2b central authorities; In screw hole 5a and the screw hole 5b screw thread is arranged, when placing screw guider must be installed earlier, parallel with upper substrate 1a respectively with the control screw orientation with infrabasal plate 2a, locking voluntarily after screw is screwed into fully.
One side of last vertebral body connecting plate 1 and hypocentrum connecting plate 2 all scribbles the hydroxyapatite coating layer 6 that thickness is 100 ± 50 μ m, is beneficial to the bone fusion of itself and terminal plate of vertebral body.
According to the physiological activity characteristic of people's cervical vertebra, this programme can bend and stretch as coronalplane, the sagittal plain lateral bending reaches actions such as axially rotation, simultaneously, with the soft tissue around cervical vertebra posterior column structure, uncovertebral joint and the cervical vertebra, keeps the stable of cervical vertebra together.
This utility model is primarily aimed to be implanted after the subtotal ectomy of the preceding road of C4-6 vertebral body and designs, because C3/5, C4/6, C5/7 gap length differ, the plurality of specifications size that prosthese can become to vary in size with prosthetic designs by the length that turn 4 is set is to satisfy the application of different parts.
This utility model is used for the bionics anterior cervical vertebrae dynamic stability device of vertebral body subtotal ectomy, can it be implanted the position of patient's cervical spine disk pathological change by surgical operation, and last vertebral body connecting plate 1 and hypocentrum connecting plate 2 are fixed with screw.Use this prosthese, can reduce pressure to cervical vertebral space and vertebral body rear, and can recover the physiology height and the movable function in this gap.This prosthese is applicable to cervical spondylosis, ossified posterior longitudinal ligament, fracture of cervical vertebra etc., and all implement the patient of preceding road vertebral body time full excision.
Further describe this utility model below by embodiment.But protection domain is not limited to this embodiment.
Embodiment 1:
Appear complete through anterior cervical vertebrae, after time full excision of row vertebral body, handle intervertebral space up and down, thoroughly decompression finishes, finishing bone groove, thoroughly hemostasis, handle under the upper vertebral body soleplate and the next vertebral body and go up soleplate, note keeping subchondral bone complete, sting and remove before the upper vertebral body upper limb hyperosteogeny before the lower edge and the next vertebral body, measure under the upper vertebral body soleplate and the next vertebral body and go up length between the soleplate, select suitable types bionics anterior cervical vertebrae dynamic stability device prosthese, in the implantable bone groove, on, hypocentrum connecting plate and upper and the next vertebral body attach closely, install and fix screw guides, insert hold-down screw and locking after the boring.
Claims (9)
1. bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy, it is characterized in that: described system comprises vertebral body connecting plate (1), hypocentrum connecting plate (2), last center pillar (3a), following center pillar (3b) and turn (4), wherein go up vertebral body connecting plate (1) by anepisternite (1b) with form with the upper substrate (1a) that anepisternite (1b) is connected at an angle, hypocentrum connecting plate (2) is by following front side board (2b) and form with the infrabasal plate (2a) that following front side board (2b) is connected at an angle; Upper substrate (1a) one side of anepisternite (1b) dorsad is connected with last center pillar (3a), and last center pillar (3a) is vertical with upper substrate (1a); Infrabasal plate (2a) descends the one side of front side board (2b) to be connected with following center pillar (3b) dorsad, and following center pillar (3b) is vertical with infrabasal plate (2a); Turn (4) two ends are connected with hypocentrum connecting plate (2) with last vertebral body connecting plate (1) with following center pillar (3b) back around last center pillar (3a) respectively, last center pillar (3a) is complementary and closely is connected with turn (4) internal diameter respectively with following center pillar (3b) substrate, reduces gradually to free side diameter afterwards; Anepisternite (1b) and following front side board (2b) are the metal sheet that is to lordosis, and there are two parallel screw holes (5a) in anepisternite (1b) central authorities, and there are two parallel screw holes (5b) in following front side board (2b) central authorities.
2. according to the described a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy of claim 1, it is characterized in that: upper substrate (1a) and infrabasal plate (2a) are rectangle, and more smaller than the anterior cervical vertebrae vertebral body time formed bone groove area in full excision back, thickness is 2-4mm.
3. according to the described a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy of claim 1, it is characterized in that: last center pillar (3a) and following center pillar (3b) did not contact when the length requirement of last center pillar (3a) and following center pillar (3b) was the compression of turn (4) limit.
4. according to the described a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy of claim 1, it is characterized in that: in screw hole (5a) and the screw hole (5b) screw thread is arranged, for from the locking nail hole.
5. according to the described a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy of claim 1, it is characterized in that: the composition of turn (4) is carbon spring steel or alloy spring steel.
6. according to the described a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy of claim 1, it is characterized in that: go up in the vertebral body connecting plate (1), angle (A) between upper substrate (1a) and the anepisternite (1b) is less than 90 °, and be slightly less than upper vertebral body forward lower comer, the i.e. angle on two limits in vertebral body sagittal median plane the place ahead and bottom.
7. according to the described a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy of claim 1, it is characterized in that: in the hypocentrum connecting plate (2), angle (B) between infrabasal plate (2a) and the following front side board (2b) is greater than 90 °, and go up angle, the i.e. angle on two limits in vertebral body sagittal median plane the place ahead and bottom before being slightly less than the next vertebral body.
8. according to the described a kind of bionics anterior cervical vertebrae dynamic stability device that is used for the vertebral body subtotal ectomy of claim 1, it is characterized in that: the steel wire diameter of turn (4) is bigger, interpyramidal movable amplitude up and down in the time of guaranteeing that amplitude is near the normal flexion and extension of cervical vertebra under its stress.
9. according to claim 1 or 4 described a kind of bionics anterior cervical vertebrae dynamic stability devices that are used for the vertebral body subtotal ectomy, it is characterized in that: the screw orientation of putting into screw hole (5a), (5b) is parallel with infrabasal plate (2a) with upper substrate (1a) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120077199XU CN202078387U (en) | 2011-03-23 | 2011-03-23 | Bionic anterior cervical dynamic stabilizer for vertebral subtotal resection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120077199XU CN202078387U (en) | 2011-03-23 | 2011-03-23 | Bionic anterior cervical dynamic stabilizer for vertebral subtotal resection |
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| CN202078387U true CN202078387U (en) | 2011-12-21 |
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| CN201120077199XU Expired - Fee Related CN202078387U (en) | 2011-03-23 | 2011-03-23 | Bionic anterior cervical dynamic stabilizer for vertebral subtotal resection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103356275A (en) * | 2012-03-29 | 2013-10-23 | 董健文 | Micro-movement lumber pedicle screw elastic-fixation system |
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2011
- 2011-03-23 CN CN201120077199XU patent/CN202078387U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103356275A (en) * | 2012-03-29 | 2013-10-23 | 董健文 | Micro-movement lumber pedicle screw elastic-fixation system |
| CN103356275B (en) * | 2012-03-29 | 2016-06-01 | 董健文 | A kind of Micro-movement lumber pedicle screw elastic-fixation system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20140323 |