CN204181700U - A kind of inner fixator in front of cervical vertebra - Google Patents
A kind of inner fixator in front of cervical vertebra Download PDFInfo
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- CN204181700U CN204181700U CN201420499709.6U CN201420499709U CN204181700U CN 204181700 U CN204181700 U CN 204181700U CN 201420499709 U CN201420499709 U CN 201420499709U CN 204181700 U CN204181700 U CN 204181700U
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Abstract
The utility model discloses a kind of inner fixator in front of cervical vertebra, comprise fixing feet on a pair, a pair time fixing feet, a pair first connecting rod, a pair second connecting rod and at least one bracing piece, fixed foot and described lower fixing feet are oppositely arranged; Two fixed feet are connected by a described first connecting rod, and two described lower fixing feet are connected by first connecting rod described in another root, and relative fixed foot is connected by described second connecting rod with described lower fixing feet; And described bracing piece is between two described second connecting rods, and the two ends of described bracing piece are connected with two described first connecting rods respectively.This utility model adopts four tooth designs and fixed form that is upper and lower, left and right Bidirectional-pressure, play the fixing effect of Bidirectional-pressure to single segmental cervical vertebra, meet cervical vertebrae physiological construction features, stickiness well and can provide very stable and firmly fixed effect, and structure is simple, be easy to adjustment is installed.
Description
Technical field
This utility model relates to a kind of medical fixed system, particularly relates to a kind of inner fixator in front of cervical vertebra.
Background technology
From 20th century 50, the sixties, after autologous for anterior decompression bone implantation fusion is used for the treatment of cervical spondylosis by Bailey and Badgley first, the people such as Smith, Robison and Cloward have carried out improving to this new treatment of cervical spondylopathy technology and since applying, the modus operandi of anterior plate fixation screw internal fixtion is widely accepted by people, is particularly widely used in clinical treatment cervical spinal trauma fracture, dislocation and degeneration cervical spondylosis etc.After disc removal bone grafting, row anterior plate screw internal fixtion significantly enhances the stability of cervical vertebra and plant bone mass, decrease the pathologic event that can cause pseudoarticulation formation, can prevent the loss of intervertebral height and promote bone-graft fusion, patient can early ambulation, reduces the generation of post-operative complication.
Traditional anterior approach nail-plate is fixed of a great variety, is generally the fixation steel plate of steel plate and screw, and the risk that screw is deviate from may occur, damage esophagus, trachea, blood vessel and nerve etc.; More advanced is that locking plate screw is fixed, and its advantage is that screw and steel plate are connected as a single entity, and steel plate can stop exiting of screw, even if screw loosening when exiting from vertebral body, screw and steel plate often together move, and screw afterbody can not be deviate from alone from steel plate, decrease the danger of esophageal injury.
MEDICREA company proposes a kind of C-JAWS cervical vertebra pressure fixer, be made up of pure titanium metal T40, single structure designs, though integrative-structure takes off the risk of nail when traditional anterior approach nail-plate fixed system can be avoided to fix, and can one direction pressurization make fixing more firm up and down again, but its structure is single, two toothing design stabilities are poor, and unidirectional pressurization fixed effect is not obvious.
Chinese patent CN201248760U discloses a kind of cervical vertebra front-path memory alloy pressure fixing device: comprise fixing feet and stationary links.Holder is provided with a pair or the fixing feet of two pairing approximation symmetries, a pair or two pairs of fixing feet tops are connected with stationary links, angle α between fixing feet and foot top line, 60 °≤α≤88 °, non-parallel design between fixing feet, fixing feet bottom is with upwards sawtooth hook, holder material adopts memorial alloy, implant after needing low temperature during implantation, after temperature increase, make fixing feet recover original angle by memory characteristic, reach pressurization up and down fixing, this operation is more complicated, and can only one direction pressurization fix up and down.
Chinese patent application CN101491454 proposes a kind of titanium alloy cervical vertebra pressure fixer and preparation method thereof, titanium alloy cervical vertebra pressure fixer disclosed in this utility model is U-shaped overall structure, two tops of U-shaped opening part are respectively rectangular pyramid, side, the front and back indentation respectively on U-shaped two limits, article two, the inner side on limit has the little hook at the bottom of U-shaped, and the bottom of U-shaped has the hole of hollow out.Be prepared from through low-speed WEDM, mold pressing and surface treatment.This technology is by titanium alloys for molding, and single structure designs, and compression molding, the shortcomings such as easy generation stress is concentrated, and do not relate to pressurization function, two toothing design stabilities are poor.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of inner fixator in front of cervical vertebra, has better stability and the stronger rigidity of structure, can realize Bidirectional-pressure, required operating time is few.
This utility model is solve the problems of the technologies described above the technical scheme adopted to be to provide a kind of inner fixator in front of cervical vertebra, comprise fixing feet on a pair, a pair time fixing feet, a pair first connecting rod, a pair second connecting rod and at least one bracing piece, fixed foot and the opposing parallel setting of described lower fixing feet; Two fixed feet are connected by a described first connecting rod, and two described lower fixing feet are connected by first connecting rod described in another root, and relative fixed foot is connected by described second connecting rod with described lower fixing feet; And described bracing piece is between two described second connecting rods, and the two ends of described bracing piece are connected with two described first connecting rods respectively.
Above-mentioned inner fixator in front of cervical vertebra, wherein, fixed foot, described lower fixing feet, described first connecting rod, described second connecting rod and described bracing piece are one-body molded.
Above-mentioned inner fixator in front of cervical vertebra, wherein, the top of each fixed foot and lower fixing feet is rectangular pyramid shape, and medial surface is provided with sawtooth hook, and two beside near medial surface are provided with sawtooth.
Above-mentioned inner fixator in front of cervical vertebra, wherein, two described second connecting rods are positioned at same plane, outwardly and be symmetrical arranged along the bearing of trend of described first connecting rod separately.
Above-mentioned inner fixator in front of cervical vertebra, wherein, part outwardly on described second connecting rod is curved, half rhombus or its combination.
Above-mentioned inner fixator in front of cervical vertebra, wherein, two fixed feet are all vertical with described second connecting rod with two described lower fixing feet.
Above-mentioned inner fixator in front of cervical vertebra, wherein, two fixed feet face two described lower fixing feet correspondences respectively and arrange.
Above-mentioned inner fixator in front of cervical vertebra, wherein, the overall shape of cross section of fixed foot, lower fixing feet is roughly the polygon of rectangle, square, trapezoidal or band camber line.
Above-mentioned inner fixator in front of cervical vertebra, wherein, the medial surface of two fixed feet is in the first plane and the second plane respectively, and arrange in β angle between described first plane and described second plane, the angle of described β angle is 45 °≤β≤90 °.
Above-mentioned inner fixator in front of cervical vertebra, wherein, the medial surface of two described lower fixing feet is in the 3rd plane and the 4th plane respectively, and arrange in β angle between described 3rd plane and described 4th plane, the angle of described β angle is 45 °≤β≤90 °.
Above-mentioned inner fixator in front of cervical vertebra, wherein, the material of fixed foot, lower fixing feet, first connecting rod, second connecting rod and bracing piece is titanium alloy, pure titanium, the high purity magnesium of purity more than 99% or magnesium alloy.
This utility model contrast prior art has following beneficial effect: the inner fixator in front of cervical vertebra that technical solutions of the utility model provide, the fixing feet of inner fixator in front of cervical vertebra is designed to the structure of four teeth, the stability compared after two toothing products implantation is better, after can implanting with tradition locking anterior approach nail-plate internal fixation system, the stability of product compares favourably, and it adopts one machine-shaping mode can avoid the possibility be separated with steel plate as the screw occurred after traditional anterior approach nail-plate internal fixation system implantation completely, more can not there is screw to deviate from from steel plate separately, the risk of damage esophagus, and this utility model is arranged to up and down and the fixed form of left and right twocouese pressurization, the unidirectional pressurization comparing two teeth is fixing more firm, and operating time is short, eliminate loaded down with trivial details installation steps and nut secured adjusted time as locking anterior approach nail-plate internal fixation system, significantly can shorten operating time, alleviate patient's misery, reduce patient and doctor's roentgenization time, and operation wound is little, is fixed with elastic reaction by pressurization, is conducive to symphysis complete.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of inner fixator in front of cervical vertebra in this utility model embodiment;
(a), (b) in Fig. 2, (c), (d) for fixing feet cross section in this utility model embodiment be in β angle with the front view of the inner fixator in front of cervical vertebra of observation window partial semi-circular, left view, top view and perspective view between outer circular inner rectangular, fixing feet;
(a), (b) in Fig. 3, (c), (d) for fixing feet cross section in this utility model embodiment be in β angle with the front view of the inner fixator in front of cervical vertebra of observation window partial semi-circular, left view, top view and perspective view between rectangle, fixing feet;
(a), (b) in Fig. 4, (c), (d) for fixing feet cross section in this utility model embodiment be in β angle with the front view of the inner fixator in front of cervical vertebra of observation window partial circle arc, left view, top view and perspective view between outer circular inner rectangular, fixing feet;
(a) (b) in Fig. 5, (c), (d) for fixing feet cross section in this utility model embodiment be in β angle with the front view of the inner fixator in front of cervical vertebra of observation window partial circle arc, left view, top view and perspective view between rectangle, fixing feet;
(a) (b) in Fig. 6, (c), (d) for fixing feet cross section in this utility model embodiment be in β angle with the front view of the inner fixator in front of cervical vertebra of observation window local half rhombus, left view, top view and perspective view between outer circular inner rectangular, fixing feet;
(a), (b) in Fig. 7, (c), (d) for fixing feet in this utility model embodiment be in β angle with the front view of the inner fixator in front of cervical vertebra of observation window local half rhombus, left view, top view and perspective view between rectangle, fixing feet;
(a), (b) in Fig. 8, (c), (d) for fixing feet cross section in this utility model embodiment be arranged in parallel between outer circular inner rectangular, fixing feet and the front view of inner fixator in front of cervical vertebra of observation window partial semi-circular, left view, top view and perspective view;
(a) (b) in Fig. 9, (c), (d) are for be arrangeding in parallel between fixing feet cross section rectangle, fixing feet in this utility model embodiment and the front view of inner fixator in front of cervical vertebra of observation window partial semi-circular, left view, top view and perspective view;
(a), (b) in Figure 10, (c), (d) for fixing feet cross section in this utility model embodiment be to be arranged in parallel between outer circular inner rectangular, fixing feet and observation window is the front view of the inner fixator in front of cervical vertebra of local arc, left view, top view and perspective view;
(a), (b) in Figure 11, (c), (d) are for be arranged in parallel between this utility model embodiment fixing feet cross section rectangle, fixing feet and observation window is the front view of the inner fixator in front of cervical vertebra of local arc, left view, top view and perspective view;
(a), (b) in Figure 12, (c), (d) for this utility model embodiment fixing feet cross section be arranged in parallel between outer circular inner rectangular, fixing feet and the front view of inner fixator in front of cervical vertebra of observation window local half rhombus, left view, top view and perspective view;
(a), (b) in Figure 13, (c), (d) for this utility model embodiment fixing feet cross section be arranged in parallel between rectangle, fixing feet and the front view of inner fixator in front of cervical vertebra of observation window local half rhombus, left view, top view and perspective view;
Figure 14 (a), (b), (c), (d) for this utility model embodiment fixing feet be arranged in parallel between outer circular inner rectangular, fixing feet, observation window is partial semi-circular and the front view of the inner fixator in front of cervical vertebra of band dimpling arc second connecting rod, left view, top view and perspective view;
(a), (b) in Figure 15, (c), (d) for this utility model embodiment fixing feet cross section be arranged in parallel between rectangle, fixing feet, the front view of the inner fixator in front of cervical vertebra of observation window partial semi-circular and band dimpling arc second connecting rod, left view, top view and perspective view;
(a), (b) in Figure 16, (c), (d) for this utility model embodiment fixing feet cross section be β angle between outer circular inner rectangular, fixing feet, observation window is the front view of the inner fixator in front of cervical vertebra of partial semi-circular and band dimpling arc second connecting rod, left view, top view and perspective view;
(a), (b) in Figure 17, (c), (d) for this utility model embodiment fixing feet be the front view of the inner fixator in front of cervical vertebra of β angle between rectangle, fixing feet, observation window partial semi-circular and band dimpling arc second connecting rod, left view, top view and perspective view;
The various schematic shapes that in Figure 18, (a), (b), (c), (d) are observation window in this utility model embodiment;
The overall shape of cross section schematic diagram that in Figure 19, (a), (b), (c), (d), (e) are fixing feet in this utility model embodiment;
Figure 20 is this utility model inner fixator in front of cervical vertebra effect schematic diagram after cervical vertebra struts pressurization;
The stressed schematic diagram that (a), (b) in Figure 21, (c), (d) are this utility model inner fixator in front of cervical vertebra softened pressurization back link and fixing feet.
In figure:
Fixing feet 2 times fixing feet 21 first connecting rod 22 second connecting rods on 1
3 observation window 4 end 5 sawtooth hook 6 sawtooth
7 bracing pieces
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
Fig. 1 is the overall structure schematic diagram of inner fixator in front of cervical vertebra in this utility model embodiment.
Refer to Fig. 1, the inner fixator in front of cervical vertebra that the present embodiment provides comprises fixing feet 1 on a pair, a pair time fixing feet 2, a pair first connecting rod 21, a pair second connecting rod 22 and at least one bracing piece 7, and upper fixing feet 1 and described lower fixing feet 2 are oppositely arranged; Two upper fixing feet 1 are connected by a first connecting rod 21, and two lower fixing feet 2 are connected by another root first connecting rod 21, and relative upper fixing feet 1 is connected by second connecting rod 22 with lower fixing feet 2; And bracing piece 7 is between two second connecting rods 22, and the two ends of bracing piece 7 are connected with two first connecting rods respectively.
The top 4 of upper fixing feet 1 and lower fixing feet 2 is tapered, preferred rectangular pyramid shape, the medial surface of upper fixing feet 1 and lower fixing feet 2 is provided with sawtooth hook 5, two beside near medial surface are provided with sawtooth 6, first connecting rod 21 and second connecting rod 22 form observation window 3, and observation window 3 facilitates in doctor's art and clinical follow is used.Bracing piece 7 plays reinforcement fixation to whole inner fixator in front of cervical vertebra, simultaneously also as the strut realizing left and right directions pressurization.Two upper fixing feet 1 and two lower fixing feet 2 be arranged in parallel between two along described fixing feet bearing of trend.
The inner fixator in front of cervical vertebra that the present embodiment provides, upper fixing feet 1, lower fixing feet 2, first connecting rod 21, second connecting rod 22 and bracing piece 7 can use titanium alloy (as Ti6Al4 etc.), pure titanium (T40 etc.) and high purity magnesium or magnesium alloy materials; As magnesium alloys such as 99.999% pure magnesium or ZK60, MB2, AZ31 or M15; Three-dimensional software is adopted to design various one inner fixator in front of cervical vertebra contour structures, then machining.
The inner fixator in front of cervical vertebra that the present embodiment provides, the machine-shaping of upper fixing feet 1, lower fixing feet 2, first connecting rod 21, second connecting rod 22 and bracing piece 7 one; , more can not there is screw and deviate from from steel plate separately in the possibility adopting one machine-shaping mode that screw can be avoided completely to be separated with steel plate, the risk of damage esophagus; Upper fixing feet 1 and lower fixing feet 2 are four toothing designs, and product has higher stability after implanting; The fixed form that the present embodiment achieves up and down and left and right twocouese pressurizes, make fixing more firm, and operating time is short, eliminate loaded down with trivial details installation steps and nut secured adjusted time as locking anterior approach nail-plate internal fixation system, significantly can shorten operating time, alleviate patient's misery, reduce patient and doctor's roentgenization time, and operation wound is little, is fixed with elastic reaction by pressurization, is conducive to symphysis complete.
The inner fixator in front of cervical vertebra that this utility model provides, on a pair, fixing feet 1 can face a pair time fixing feet 2 design arranged in parallel (as shown in Fig. 8-Figure 15), also fixing feet 1 on a pair that is connected by first connecting rod 21 can be designed to have β angle, correspondingly, a pair time fixing feet 2 is also designed to be had β angle (45 °≤β≤90 °) (as shown in Fig. 2-Fig. 7, Figure 16 and Figure 17), thus making pressurization area larger, pressure effect is better more stable.Specifically, the medial surface of two upper fixing feet 1 can be made to be in the first plane and the second plane respectively, arrange in β angle between described first plane and described second plane, the medial surface of two lower fixing feet 2 is in the 3rd plane and the 4th plane respectively, arranges between described 3rd plane and described 4th plane in β angle.
The inner fixator in front of cervical vertebra that this utility model provides, two first connecting rods 21 and two second connecting rods 22 are connected to form observation window 3, two second connecting rods 22 and bracing piece 7 can be positioned at same plane, as shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12 and Figure 13; Or be a globoidal structure along the fixing feet bottom outside dimpling of bearing of trend, as shown in Figure 14, Figure 15, Figure 16 and Figure 17, also namely two second connecting rods 22 and bracing piece 7 can be positioned at same curved surface.On the other hand, preferably, two second connecting rods 22 are outwardly and be symmetrical arranged along described first connecting rod bearing of trend separately.
This fixed system has spring function, can be softened thus play the fixing effect of single segmental cervical vertebra pressurization.Second connecting rod 22 is to allow this fixed system better fit in cervical vertebra along the structural design that fixing feet bottom bearing of trend is differential of the arc face, thus drops to minimum by human body to the foreign body sensation after implantation.As shown in figure 18, the global shape of observation window 3 can be that (projection of second connecting rod is half Pedicellus et Pericarpium Trapae shape to local half rhombus, can simultaneously see Fig. 6, Fig. 7, shown in Figure 12 and Figure 13), or (projection of second connecting rod is arc for local arc, can simultaneously see Fig. 4, Fig. 5, shown in Figure 10 and Figure 11), or (projection of second connecting rod is for semicircle for the curved band groove in middle part (projection of second connecting rod is the combination of arc and half rhombus) or middle part semicircular in shape, can simultaneously see Fig. 2, Fig. 3, Fig. 8, Fig. 9, Figure 14, Figure 15, Figure 16 and Figure 17), the stress that design like this can make the junction of connecting rod and fixing feet be subject to is less, prevent breakage and fracture, also reliably safer while extending the life-span of product.
The inner fixator in front of cervical vertebra that this utility model provides, the end 4 of its fixing feet 1 is preferably rectangular pyramid, and the overall shape of cross section of fixing feet 1 is roughly outer circular inner rectangular (as shown in Fig. 2, Fig. 4, Fig. 6, Fig. 8, Figure 10, Figure 12, Figure 14 and Figure 16); Or be roughly rectangle (as shown in Fig. 3, Fig. 5, Fig. 7, Fig. 9, Figure 11, Figure 13, Figure 15 and Figure 17); Or being roughly inside square, trapezoidal or outer circular trapezoidal, the design that cross section has arc can make the intensity of fixing feet higher, more stable after implantation.
The inner fixator in front of cervical vertebra that this utility model provides, by changing the angle β in fixing feet 1, the shape of observation window 3, the shape of second connecting rod 22 and a pair between the fixing feet 1 and angle β between a pair time fixing feet 2, forms different structural designs.Specifically as shown in Fig. 2-17, be described respectively below.
In Fig. 2, the cross sectional shape of fixing feet is outer circular inner rectangular (as Suo Shi (a) in Fig. 2), on first connecting rod 21 be connected a pair, fixing feet 1 is arranged in β angle, and a pair time fixing feet 2 also arranges (45 °≤β≤90 °) in β angle; The top of upper fixing feet 1 and lower fixing feet 2 is rectangular pyramid, two second connecting rods 22 are positioned at same plane and arrange, the inner side of upper fixing feet 1 and lower fixing feet 2 is provided with sawtooth hook 5, and two beside near medial surface of upper fixing feet 1 and lower fixing feet are provided with sawtooth 6.Bracing piece 7 plays reinforcement fixation to whole inner fixator in front of cervical vertebra, play strut effect when left and right directions pressurizes simultaneously, two pairs of fixing feet are made relatively to draw close compression at left and right directions, finally present the effect of four teeth directional anterior cervical vertebrae fixture center extruding, thus the fixing effect of Bidirectional-pressure is served to single segmental cervical vertebra; Observation window 3 facilitates in doctor's art and clinical follow use, and local is semicircle, as shown in (a) in Fig. 2.
Design in Fig. 3 and Fig. 2 is substantially identical, and the shape of cross section unlike fixing feet is rectangle, as shown in (a) in Fig. 3.
Design in Fig. 4 and Fig. 2 is substantially identical, is partial circle arc, unlike observation window 3 as shown in (a) in Fig. 4.
Design in Fig. 5 and Fig. 4 is substantially identical, and the shape of cross section unlike fixing feet is rectangle, as shown in (a) in Fig. 5.
Substantially identical with the design in Fig. 2 in Fig. 6, be local half rhombus unlike observation window 3, as shown in (a) in Fig. 6.
Design in Fig. 7 and Fig. 6 is substantially identical, and the shape of cross section unlike fixing feet is rectangle, as shown in (a) in Fig. 7.
Design in Fig. 8 and Fig. 2 is substantially identical, is arranged in parallel, unlike two pairs of fixing feet as shown in (a), (b) He (c) in Fig. 8.
Design in Fig. 9 and Fig. 8 is substantially identical, and the cross section unlike fixing feet is rectangle, as shown in (a) in Fig. 9.
Design in Figure 10 and Fig. 8 is substantially identical, is partial circle arc, unlike observation window 3 as shown in (a) in Figure 10.
Design in Figure 11 and Figure 10 is substantially identical, and the cross sectional shape unlike fixing feet is rectangle, as shown in (a) in Figure 11.
Design in Figure 12 and Fig. 8 is substantially identical, is local half rhombus, unlike observation window 3 as shown in (a) in Figure 12.
Design in Figure 13 and Figure 12 is substantially identical, and the cross sectional shape unlike fixing feet is rectangle, as shown in (a) in Figure 13.
Design in Figure 14 and Fig. 8 is substantially identical, is the design of dimpling arc, unlike second connecting rod 22 along the side of fixing feet bearing of trend as shown in (b) in Figure 14.
Design in Figure 15 and Figure 14 is substantially identical, and the cross sectional shape unlike fixing feet is rectangle, as shown in (a) in Figure 15.
Design in Figure 16 and Fig. 2 is substantially identical, unlike second connecting rod 22 side along fixing feet bearing of trend be dimpling arc design, as shown in (b) in Figure 16.
Design in Figure 17 and Figure 16 is substantially identical, and the cross sectional shape unlike fixing feet 1 is rectangle.
Figure 20 is this utility model inner fixator in front of cervical vertebra effect schematic diagram after cervical vertebra struts pressurization; (a), (b) in Figure 21, (c), (d) strut the stressed schematic diagram of pressurization back link and fixing feet for this utility model inner fixator in front of cervical vertebra.
Refer to Figure 20 and 21, the inner fixator in front of cervical vertebra that this utility model provides in use, after inner fixator in front of cervical vertebra implant into body, inside second connecting rod 22, observation window 3 middle parts outwards apply distracting force F, while above-mentioned position applies outside distracting force, the two pairs of fixing feet make it constantly relatively draw close compression (in see left view 21 (c)) at above-below direction due to structural design, because the effect of bracing piece 7 makes two pairs of fixing feet relatively draw close compression (see overlooking in Figure 21 (d)) at left and right directions in the process of compression, finally present the effect of four teeth directional inner fixator in front of cervical vertebra center extruding, thus the fixing effect (see in Front view 21 (b)) of Bidirectional-pressure is served to single segmental cervical vertebra, after removing distracting force, product keeps Bidirectional-pressure effect, make fixing more firm.
This utility model adopts four tooth designs and fixed form that is upper and lower, left and right Bidirectional-pressure, play the fixing effect of Bidirectional-pressure to single segmental cervical vertebra, meet cervical vertebrae physiological construction features, stickiness well and can provide very stable and firmly fixed effect, and structure is simple, be easy to install and regulate, significantly can shorten operating time simultaneously, alleviate patient's misery, reduce patient and doctor's roentgenization time, and operation wound is little, is fixed with elastic reaction by pressurization, is conducive to symphysis complete.
Although this utility model discloses as above with preferred embodiment; so itself and be not used to limit this utility model; any those skilled in the art; not departing from spirit and scope of the present utility model; when doing a little amendment and perfect, therefore protection domain of the present utility model is when being as the criterion of defining with claims.
Claims (11)
1. an inner fixator in front of cervical vertebra, is characterized in that, comprising:
Fixing feet, a pair time fixing feet, a pair first connecting rod, a pair second connecting rod and at least one bracing piece on a pair, fixed foot and the opposing parallel setting of described lower fixing feet;
Two fixed feet are connected by a described first connecting rod, and two described lower fixing feet are connected by first connecting rod described in another root, and relative fixed foot is connected by described second connecting rod with described lower fixing feet; And
Described bracing piece is between two described second connecting rods, and the two ends of described bracing piece are connected with two described first connecting rods respectively.
2. inner fixator in front of cervical vertebra as claimed in claim 1, it is characterized in that, fixed foot, described lower fixing feet, described first connecting rod, described second connecting rod and described bracing piece are one-body molded.
3. inner fixator in front of cervical vertebra as claimed in claim 1, it is characterized in that, the top of each fixed foot and lower fixing feet is rectangular pyramid shape, and medial surface is provided with sawtooth hook, and two beside near medial surface are provided with sawtooth.
4. inner fixator in front of cervical vertebra as claimed in claim 1, is characterized in that, two described second connecting rods are positioned at same plane, outwardly and be symmetrical arranged along the bearing of trend of described first connecting rod separately.
5. inner fixator in front of cervical vertebra as claimed in claim 4, is characterized in that, part outwardly on described second connecting rod is curved, half rhombus or its combination.
6. inner fixator in front of cervical vertebra as claimed in claim 1, it is characterized in that, two described second connecting rods and described bracing piece are positioned at same plane or same curved surface.
7. inner fixator in front of cervical vertebra as claimed in claim 1, is characterized in that, two fixed feet face two described lower fixing feet correspondences respectively and arrange.
8. inner fixator in front of cervical vertebra as claimed in claim 1, is characterized in that, the overall shape of cross section of fixed foot and described lower fixing feet is roughly the polygon of rectangle, square, trapezoidal or band camber line.
9. inner fixator in front of cervical vertebra as claimed in claim 1, is characterized in that, arrange in β angle between two fixed feet, the angle of described β angle is 45 °≤β≤90 °.
10. inner fixator in front of cervical vertebra as claimed in claim 1, is characterized in that, arrange in β angle between two described lower fixing feet, the angle of described β angle is 45 °≤β≤90 °.
11. inner fixator in front of cervical vertebras as claimed in claim 1, it is characterized in that, the material of fixed foot, described lower fixing feet, described first connecting rod, described second connecting rod and described bracing piece is titanium alloy, pure titanium, the high purity magnesium of purity more than 99% or magnesium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420499709.6U CN204181700U (en) | 2014-09-02 | 2014-09-02 | A kind of inner fixator in front of cervical vertebra |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420499709.6U CN204181700U (en) | 2014-09-02 | 2014-09-02 | A kind of inner fixator in front of cervical vertebra |
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| CN204181700U true CN204181700U (en) | 2015-03-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015144010A1 (en) * | 2014-03-28 | 2015-10-01 | 上海微创骨科医疗科技有限公司 | Anterior cervical internal fixation system and preparation method therefor |
| CN105434024A (en) * | 2014-09-02 | 2016-03-30 | 上海微创骨科医疗科技有限公司 | Internal fixing device for anterior cervical spine |
-
2014
- 2014-09-02 CN CN201420499709.6U patent/CN204181700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015144010A1 (en) * | 2014-03-28 | 2015-10-01 | 上海微创骨科医疗科技有限公司 | Anterior cervical internal fixation system and preparation method therefor |
| CN105434024A (en) * | 2014-09-02 | 2016-03-30 | 上海微创骨科医疗科技有限公司 | Internal fixing device for anterior cervical spine |
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Effective date of registration: 20181220 Address after: 215000 Workshop B, No. 112 Fangzhong Street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: Suzhou Minimally Invasive Spinal Trauma Medical Technology Co., Ltd. Address before: Building 23, Lane 588, Tianxiong Road, Zhoupu Town, Pudong New Area, Shanghai, 201318 Patentee before: Shanghai MicroPort Orthopedics Co., Ltd. |
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