CN102335037B - Vertebral plate steel plate for cervical vertebral body - Google Patents
Vertebral plate steel plate for cervical vertebral body Download PDFInfo
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- CN102335037B CN102335037B CN201110202618.2A CN201110202618A CN102335037B CN 102335037 B CN102335037 B CN 102335037B CN 201110202618 A CN201110202618 A CN 201110202618A CN 102335037 B CN102335037 B CN 102335037B
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- plate
- vertebral
- steel plate
- screens piece
- gripping
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7071—Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor
Abstract
The invention discloses a vertebral plate steel plate for cervical vertebral body, which is provided with a gripping end, wherein the gripping end is provided with an upper gripping plate and a lower gripping plate for gripping the cut end of the vertebral plate, and the gripping end is also provided with a retaining block to be retained into a groove at the port of the vertebral plate cut end. Under the gripping effects of the upper gripping plate and the lower gripping plate, the vertebral plate can not move up and down relative to the vertebral plate steel plate; simultaneously, because the retaining block can be inserted into the groove at the port of the vertebral plate cut end, the front and back side walls of the groove are abutted against the retaining block, so that the vertebral plate can not swing back and forth relative to the vertebral plate steel plate; and in addition, because the cut end of the vertebral plate is pushed open outwards and has a certain resetting trend, the cut end of the vertebral plate is not liable to disengage from the side. Therefore, the vertebral plate steel plate of the structure can position the cut end of the vertebral plate between the upper gripping plate and the lower gripping plate more reliably before setscrews are implanted, and moreover, the retaining block is helpful to strengthen the fixation of the setscrews after the setscrews are implanted.
Description
Technical field
The present invention relates to field of medical technology, particularly a kind of vertebral steel plate for body of cervical vertebra.
Background technology
When cervical vertebra is impaired, may cause the spinal cord in cervical vertebra to sustain damage, and spinal cord may be oppressed cervical vertebra nerve after impaired, causes the condition of illness such as patient's discomfort, pain.Such as, in the canalis spinalis of fracture-dislocation of cervical spine with spinal cord injury, cervical vertebra, there is sclerite obviously to oppress spinal cord, hinder the situations such as rear spinal cord injury symptom increases the weight of gradually, all may cause cervical vertebra nerve compression.
Clinical operation when treatment, conventionally carry out otch, appear, fusion after vertebrae plate resection, excision fixes, closes the steps such as otch.In prior art, vertebrae plate resection mainly comprises laminectomy, expands vertebrae plate resection, unilateral laminectomy.The above two modes are all excised vertebral plate, and higher to the destructiveness of cervical stability, the latter cuts one-sided vertebral plate and struts vertebral plate and side plate, can expand canalis spinalis, thereby solve the problem of spinal compression, simultaneously, can retain again the most of rock-steady structure in cervical vertebra rear portion, to the stability influence of cervical vertebra a little less than.
Fix for the fusion after vertebrae plate resection, there is various ways, mainly comprise after Cauaturn vertebrae plate resection and facet joint fusion, vertebrae plate resection by many fixations with steel wire, and hold-down screw and the fixing fusion of steel plate.The latter is mainly for unilateral laminectomy.
Please refer to Fig. 1 to Fig. 4, Fig. 1 is preoperative body of cervical vertebra structural representation; Fig. 2 is the body of cervical vertebra structural representation of being fixed by vertebral steel plate after vertebrae plate resection; Fig. 3 is the perspective view of vertebral steel plate in Fig. 2; Fig. 4 is the front view of Fig. 3.
Compare and can find out by Fig. 1 and Fig. 2, hemilaminectomy, be to cut (root for right side vertebral plate 102 shown in Fig. 2) from the root of one-sided vertebral plate 102, the top of vertebral plate 102 connects the spinous process 101 of body of cervical vertebra 10, and root connects the lateral mass 103 of body of cervical vertebra 10.As shown in Figure 3, one end of vertebral steel plate 11 has train wheel bridge 111 and lower plate 112, between train wheel bridge 111 and lower plate 112, form the utensil receiving opening that holds vertebral plate 102 cut end, the cut end that is vertebral plate 102 can snap between the train wheel bridge 111 and lower plate 112 of vertebral steel plate 11 one end, and the other end of vertebral steel plate 11 is connected in or is overlapped on corresponding lateral mass 103.For fixing vertebral steel plate 11 and vertebral plate 102 and lateral mass 103, upper surface at the two ends of vertebral steel plate 11 all processes through hole, the through hole 1111 of train wheel bridge 111 as shown in Figure 3, the hold-down screw that re-uses respective number runs through respectively each through hole, and implant respectively in vertebral plate 102 and lateral mass 103, realize fixing.
But, there is following technical problem in above-mentioned fixation: in the time inserting vertebral steel plate 11, only by the mode of upper and lower clamping, one end of vertebral steel plate 11 and vertebral plate 102 are located, so that implantation hold-down screw, which less stable, vertebral steel plate 11 is easy to come off from utensil receiving opening both-side opening, and separate with vertebral plate 11, be difficult for operating in Rhizoma Atractylodis Macrocephalae, and, only rely on hold-down screw also cannot ensure postoperative stability; In addition, train wheel bridge 111 and lower plate 112 are separated, and its intensity is poor, a little less than bearing capacity.
In view of this, how improving the structure of vertebral steel plate, improve the stability of fixing vertebral plate, is those skilled in the art's technical issues that need to address.
Summary of the invention
Object of the present invention is for providing a kind of vertebral steel plate, this vertebral steel plate has the screens piece that snaps in vertebral plate root port draw-in groove, this screens piece can limit vertebral plate cut ends and swing and the utensil receiving opening of disengaging vertebral steel plate, thereby improve the reliability of vertebral steel plate clamping vertebral plate cut ends, be convenient to operate in art.
To achieve the object of the present invention, the invention provides a kind of vertebral steel plate for body of cervical vertebra, have bare terminal end, described bare terminal end has train wheel bridge and the lower plate of clamping vertebral plate cut ends, and described bare terminal end is provided with the screens piece snapping in described cut ends port draw-in groove.
Preferably, the top of described screens piece and bottom join with described train wheel bridge and described lower plate respectively.
Preferably, described screens piece, and the plate body of described vertebral steel plate between described train wheel bridge and described lower plate connects as one.
Preferably, the width w of described screens is less than the width t of described lower plate.
Preferably, the length L 2 of described screens piece is less than or equal to the length L 1 of described lower plate.
Preferably, the width w of described screens piece equals the width t of described lower plate, and the length L 2 of described screens piece is less than the length L 1 of described lower plate.
Preferably, the length of described train wheel bridge is greater than the length L 1 of described lower plate.
The bare terminal end of the vertebral steel plate that this invention provides is provided with the screens piece snapping in vertebral plate cut ends port draw-in groove.So under the clamping action of train wheel bridge and lower plate, vertebral plate cannot move up and down with respect to vertebral steel plate; Meanwhile, because screens piece can insert in the draw-in groove of vertebral plate cut ends port, therefore the front and back sidewall of draw-in groove can be conflicted with screens piece, vertebral plate also cannot swing with respect to vertebral steel plate; In addition, because vertebral plate cut ends outwards struts, have certain reset trend, vertebral plate cut ends is also not easy to depart from from side.Therefore, the vertebral steel plate of this structure can be positioned vertebral plate cut ends between train wheel bridge and lower plate comparatively reliably before implanting hold-down screw, and after implanting hold-down screw, screens piece also contributes to consolidate the positioning action of hold-down screw.
In further technical scheme, the top of screens piece and bottom are connected on respectively train wheel bridge and lower plate.This kind of set-up mode can be strengthened the intensity of vertebral steel plate bare terminal end, improves anti-pressure ability, thereby maintains the normal function of postoperative this body of cervical vertebra.
Brief description of the drawings
Fig. 1 is preoperative body of cervical vertebra structural representation;
Fig. 2 is the body of cervical vertebra structural representation of being fixed by vertebral steel plate after vertebrae plate resection;
Fig. 3 is the perspective view of vertebral steel plate in Fig. 2;
Fig. 4 is the front view of Fig. 3;
Fig. 5 is the structural representation of a kind of detailed description of the invention of vertebral steel plate provided by the present invention;
Fig. 6 is the structural representation of the body of cervical vertebra that coordinates with vertebral steel plate in Fig. 5;
Fig. 7 is that in Fig. 5, vertebral steel plate is implanted the structural representation after body of cervical vertebra in Fig. 6;
Fig. 8 is the front view of Fig. 5;
Fig. 9 is the left view of Fig. 5.
Detailed description of the invention
Core of the present invention is for providing a kind of vertebral steel plate, this vertebral steel plate has the screens piece that snaps in vertebral plate root port draw-in groove, this screens piece can limit vertebral plate cut ends and swing and the utensil receiving opening of disengaging vertebral steel plate, thereby improve the reliability of vertebral steel plate clamping vertebral plate cut ends, be convenient to operate in art.
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 5, Fig. 5 is the structural representation of a kind of detailed description of the invention of vertebral steel plate provided by the present invention; Fig. 6 is the structural representation of the body of cervical vertebra that coordinates with vertebral steel plate in Fig. 5; Fig. 7 is that in Fig. 5, vertebral steel plate is implanted the structural representation after body of cervical vertebra in Fig. 6; Fig. 8 is the front view of Fig. 5.
It should be noted that, for ease of describing and consulting, the upper and lower, left and right of mentioning in literary composition and the forward and backward temporald eixis word that waits be all taking the visual angle of Fig. 8 as benchmark, vertical paper direction outwards, inwards in the forward and backward corresponding diagram 8 respectively wherein relating to.
The vertebral steel plate 21 that this embodiment provides, for fixing of body of cervical vertebra 20 vertebral plates 202.After the fixing excision of vertebral plate 202 completes, otch forms the cut ends 2021 of vertebral plate 202 and lateral mass 203 cut ends of body of cervical vertebra 20.Vertebral plate 202 cut ends 2021 outwards strut to expand after canalis spinalis, need to fix vertebral plate 202 and lateral mass 203, for realizing this object, what this programme was same as the prior art is, one end of vertebral steel plate 21 is bare terminal end, and bare terminal end has train wheel bridge 211 and lower plate 212, and the two is held on vertebral plate 202 cut ends 2021 between the two, be the utensil receiving opening that train wheel bridge 211 and lower plate 212 form vertebral plate 202 cut ends 2021, the other end of vertebral steel plate 21 connects the lateral mass 203 of body of cervical vertebra 20.
The other end of vertebral steel plate 21 can be a lapping plate 213, directly be overlapped in the upper surface of lateral mass 203, the other end of vertebral steel plate 21 shown in Fig. 5 also have by plate body to downward-extension against plate, also form interface arrangment with lapping plate, should, against plate against lateral mass 203, improve the stability that vertebral steel plate 21 is connected with lateral mass 203.The train wheel bridge 211 of vertebral steel plate 21 bare terminal ends and lapping plate 213 all can arrange the through hole that through-thickness extends, the hold-down screw of respective number runs through each through hole and implants respectively in corresponding vertebral plate 202 and lateral mass 203, thereby realizes the fixing of vertebral plate 202 and lateral mass 203.A through hole 2111 can be set on train wheel bridge 211, two through holes 2131 are set on lapping plate 213, as shown in Figure 5, on vertebral plate 202 and lateral mass 203, implant respectively one and two hold-down screws, the difference that this kind of set-up mode mainly can operations area based on vertebral plate 202 and lateral mass 203.In addition,, by fixed plate 213 and lateral mass 203, train wheel bridge 211 and vertebral plate 202, be easy to practical operation.
The bare terminal end of the vertebral steel plate 21 that unlike the prior art, this embodiment provides is also provided with the screens piece 214 snapping in vertebral plate 202 cut ends 2021 port draw-in groove A.While operation, before implanting vertebral steel plate 21, sting out draw-in groove A at the port of vertebral plate 202 cut ends 2021, while making this vertebral steel plate 21 be stuck in vertebral plate 202 cut ends 2021, this screens piece 214 can insert in draw-in groove A.So under the clamping action of train wheel bridge 211 and lower plate 212, vertebral plate 202 cannot move up and down with respect to vertebral steel plate 21; Meanwhile, because screens piece 214 inserts in draw-in groove A, front and back sidewall and the screens piece 214 of draw-in groove A are conflicted, and vertebral plate 202 also cannot swing with respect to vertebral steel plate 21; Certainly, because vertebral plate 202 cut ends 2021 outwards strut, have certain reset trend, vertebral plate 202 cut ends 2021 are also not easy to depart from from the left side of utensil receiving opening.Based on above-mentioned analysis, the vertebral steel plate 21 of this structure can be positioned vertebral plate 202 cut ends 2021 between train wheel bridge 211 and lower plate 212 comparatively reliably before implanting hold-down screw, and after implanting hold-down screw, screens piece 214 also contributes to consolidate the positioning action of hold-down screw.
Preferably make lower plate 212 length be less than the length of train wheel bridge 211, be mainly the through hole that needs processing to run through for hold-down screw due to train wheel bridge 211, possess certain size, and lower plate 212 can support under the prerequisite of vertebral plate 202 bottoms in guarantee, minification as far as possible, in order to avoid interfere canalis spinalis inside.
The concrete structure of screens piece 214 and set-up mode can have multiple.Such as, the lower surface of train wheel bridge 211 has the projection to downward-extension, or the upper surface of lower plate 212 has upwardly extending projection, above-mentioned projection all can be used as required screens piece 214 structures, now, the draw-in groove A stinging out at vertebral plate 202 cut ends 2021 ports need connect upper surface or the lower surface of vertebral plate 202 cut ends 2021; Certainly, can also be the projection that extend to vertebral plate 202 cut ends 2021 at the plate body place between train wheel bridge 211 and lower plate 212, do not contact with upper and lower two clamping plate, now, draw-in groove A can retain upper side wall and lower wall.The screens piece 214 of said structure all can be realized the effect of restriction vertebral plate 202 swings.
Comparatively preferred screens piece 214 set-up modes are, the top of screens piece 214 and bottom are connected on respectively train wheel bridge 211 and lower plate 212, such as, the screens piece 214 of column is set, now, correspondingly sting out the draw-in groove A of perforation vertebral plate 202 root upper and lower surfaces at vertebral plate 202 cut ends 2021 ports.In prior art; train wheel bridge 211 is only connected by the plate body of vertebral steel plate 21 in low order end place with lower plate 212, intensity a little less than, this kind of set-up mode can be strengthened the intensity of vertebral steel plate 21 bare terminal ends; improve anti-pressure ability, thereby maintain the normal function of postoperative this body of cervical vertebra 20.
For the scheme of above-mentioned raising vertebral steel plate 21 intensity, further preferred version is, makes screens piece 214, and plate body between train wheel bridge 211 and lower plate 212 connects as one, and on the basis of above-mentioned column screens piece 214, continues to extend.This preferred version is equivalent to lower plate 212 and train wheel bridge 211 roughly to link into an integrated entity.Obviously, can further improve the intensity of vertebral steel plate 21 bare terminal ends.
Please refer to Fig. 9, the left view that Fig. 9 is Fig. 5.
In addition, the width w of screens piece 214 is preferably less than or equal to the width t of lower plate 212.The train wheel bridge 211 of vertebral steel plate 21, lower plate 212, and the width of plate body is roughly equal, on lapping plate 213 due to vertebral steel plate 21, be set up in parallel two through hole, therefore the width of lapping plate 213 is bigger, the width w of screens piece 214 is mainly using lower plate 212 as with reference to standard herein.The width t of the width lower plate 212 shown in Fig. 9.Because vertebral plate 202 itself is narrower, be that width is less, screens piece 214 need snap in the draw-in groove A of vertebral plate 202 cut ends 2021, in order to limit the swing of vertebral plate 202, the width of draw-in groove A must be less than the width of vertebral plate 202 cut ends 2021, therefore the width w of screens piece 214 should be suitable, unsuitable excessive, be convenient to sting out draw-in groove A in practical operation, guarantee that screens piece 214 can give play to the effect of restriction vertebral plate 202 swings.Because the width of vertebral steel plate 21 is less than the width of vertebral plate 202 conventionally, therefore make the width of screens piece 214 be less than the width t of lower plate 212, can ensure that the width w of screens piece 214 is less than the width of vertebral plate 202 cut ends 2021.
In the time that the width w of screens piece 214 equals the width of lower plate 212, the length L 2 of screens piece 214 must be less than the length L 1 of lower plate 212, ensures that lower plate 212 can support the lower surface of vertebral plate 202 cut ends 2021, as shown in Figure 8.Because screens piece 214 extends to the plate body place between train wheel bridge 211 and lower plate 212, its length is the distance of its left end to plate body, and the length L 1 of lower plate 212 is that the left end of lower plate 212 is to the distance of plate body.In the time that the width w of screens piece 214 is less than the width t of lower plate 212, for the not specific restriction of length L 2 of screens piece 214, but still preferably make screens piece 214 length L 2 be less than the length L 1 of lower plate 212, on the one hand, ensure that lower plate 212 has the area of enough support vertebral plates 202 cut ends 2021 lower surfaces, on the other hand, the long meeting of length L 2 of screens piece 214 causes the degree of depth of draw-in groove A darker, screens piece 214 length L 2 shown in Fig. 8 are less than the length of lower plate 212, realize restriction vertebral plate 202 swings and strengthening bare terminal end intensity simultaneously, can reduce the draw-in groove A degree of depth of vertebral plate 202 cut ends 2021 as far as possible.
Above a kind of vertebral steel plate for body of cervical vertebra provided by the present invention is described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (6)
1. the vertebral steel plate for body of cervical vertebra, there is bare terminal end, described bare terminal end has train wheel bridge (211) and the lower plate (212) of clamping vertebral plate (202) cut ends (2021), it is characterized in that, described bare terminal end is provided with the screens piece (214) snapping in described cut ends (2021) port draw-in groove (A); The top of described screens piece (214) and bottom join with described train wheel bridge (211) and described lower plate (212) respectively.
2. vertebral steel plate according to claim 1, is characterized in that, the plate body of the described vertebral steel plate (21) between described screens piece (214) and described train wheel bridge (211) and described lower plate (212) connects as one.
3. vertebral steel plate according to claim 2, is characterized in that, the width w of described screens piece (214) is less than the width t of described lower plate (212).
4. vertebral steel plate according to claim 3, is characterized in that, the length L 2 of described screens piece (214) is less than or equal to the length L 1 of described lower plate (212).
5. vertebral steel plate according to claim 2, is characterized in that, the width w of described screens piece (214) equals the width t of described lower plate (212), and the length L 2 of described screens piece (214) is less than the length L 1 of described lower plate (212).
6. according to the vertebral steel plate described in claim 1 to 5 any one, it is characterized in that, the length of described train wheel bridge (211) is greater than the length of described lower plate (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110202618.2A CN102335037B (en) | 2011-07-19 | 2011-07-19 | Vertebral plate steel plate for cervical vertebral body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110202618.2A CN102335037B (en) | 2011-07-19 | 2011-07-19 | Vertebral plate steel plate for cervical vertebral body |
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| CN102335037A CN102335037A (en) | 2012-02-01 |
| CN102335037B true CN102335037B (en) | 2014-06-25 |
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| CN201110202618.2A Active CN102335037B (en) | 2011-07-19 | 2011-07-19 | Vertebral plate steel plate for cervical vertebral body |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108056806B (en) * | 2017-12-19 | 2023-11-14 | 杨晋才 | Centrum steel plate |
| CN108113741A (en) * | 2018-01-22 | 2018-06-05 | 浙江嘉佑医疗器械有限公司 | A kind of titanium plate for laminoplasty |
| CN113855200B (en) * | 2021-09-15 | 2023-07-04 | 北京纳通医疗科技控股有限公司 | Cervical vertebra rear road single door opening fixture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201022741Y (en) * | 2006-12-01 | 2008-02-20 | 创生医疗器械(江苏)有限公司 | Cervical vertebra open door fixed plate |
| CN202191349U (en) * | 2011-07-19 | 2012-04-18 | 上海拓腾医疗器械有限公司 | Vertebral steel plate used for cervical vertebra of patient |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8105366B2 (en) * | 2002-05-30 | 2012-01-31 | Warsaw Orthopedic, Inc. | Laminoplasty plate with flanges |
| GB2486608B (en) * | 2009-10-03 | 2016-03-30 | Nuvasive Inc | Laminoplasty bone plate system and template tool |
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2011
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201022741Y (en) * | 2006-12-01 | 2008-02-20 | 创生医疗器械(江苏)有限公司 | Cervical vertebra open door fixed plate |
| CN202191349U (en) * | 2011-07-19 | 2012-04-18 | 上海拓腾医疗器械有限公司 | Vertebral steel plate used for cervical vertebra of patient |
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