CN101991457B - Interfacial distracting device of cervical vertebra facet joint - Google Patents
Interfacial distracting device of cervical vertebra facet joint Download PDFInfo
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- CN101991457B CN101991457B CN 200910170681 CN200910170681A CN101991457B CN 101991457 B CN101991457 B CN 101991457B CN 200910170681 CN200910170681 CN 200910170681 CN 200910170681 A CN200910170681 A CN 200910170681A CN 101991457 B CN101991457 B CN 101991457B
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Abstract
The invention provides an interfacial distracting device of a cervical vertebra facet joint, comprising a first part and a second part which are overlapped up and down, wherein the rear ends of the first part and the second part are connected, and the front ends thereof form free ends; and a front-end distracting device is arranged between the first part and the second part and causes the front ends of the first part and the second part to open after the first part and the second part are inserted into the cervical vertebra facet joint interfaces. The interfacial distracting device of a cervical vertebra facet joint of the invention can distract a gap between the cervical vertebra facet joint interfaces angularly so as to widen a foramen intervertebrale which permits nerve roots to pass through, and restore cervical vertebra height and physiological curvature, thus greatly lowering the cervical vertebra operation curing trauma and operation difficulty.
Description
Technical field
The present invention is relevant for a kind of orthopaedic medical treatment product, device for spreading between particularly a kind of interface, the little joint of cervical vertebra that is used to treat cervical spondylosis.
Background technology
Spinal column is the important system that supports the human body body; As shown in Figure 1; The cervical part of esophagus spinal column of human body is connected and composed up and down by polylith cervical vertebra 20, between the vertebral body of adjacent two cervical vertebras 20 up and down, intervertebral disc 201 is arranged, and goes up hypocentrum 202,203 thereby support; The upper and lower incisura of the pedicle of vertebral arch 204 upper and lower edge of adjacent cervical vertebrae 20 forms intervertebral foramina 205 (being nerve root canal) relatively, has crest nerve root and [to pass through.Referring to shown in Figure 1, expression is in the structure of the human cervical spine of normal physiological situation.Under the normal physiological situation, the cervical part of esophagus spinal column has certain physiology curvature, and intervertebral disc 201 is in normal height, and the size of intervertebral foramina 205 is enough to supply nerve root to be passed.As shown in Figure 2, the human cervical spine structure during for cervical vertebra generation pathological changes.When cervical vertebra generation pathological changes; It is straight that the normal physiological curvature of cervical part of esophagus spinal column becomes, and intervertebral disc 201 is squeezed, and intervertebral foramina 205 is diminished; The nerve root of passing intervertebral foramina 205 will be upset and oppress, produce symptoms such as upper limb pain, numbness of the fingers, and severe patient can cause upper limb disorder.
Because symptoms such as the pain that patient produced behind the cervical spondylosis, numbness of the fingers mainly because intervertebral foramina 205 diminishes and causes, make the state before pathological changes is arrived in intervertebral foramina 205 changes big (recovery) through operation, just can effectively eliminate above-mentioned symptom and sign.Can find out that from the cervical vertebra structure chart of Fig. 1, Fig. 2 can make intervertebral foramina 205 become big through following dual mode, one be the gap 206 of bed hedgehopping between interface, intervertebral foramina 205 rear sides, two little joint; Another is two vertebral bodys 202, the height between 203 that recovers intervertebral foramina 205 front sides.But; If the gap 206 between direct interface, bed hedgehopping intervertebral foramina 205 rear sides, two little joint; Can cause cervical vertebra tilt forward, its incline direction is just in time in the opposite direction with the physiological bending of cervical part of esophagus spinal column, makes two vertebral bodys 202, the height between 203 littler; Intervertebral disc 201 suffers oppression more serious, and can produce adverse influence to the normal activity of postoperative patient.Therefore, generally believe that at present this to make intervertebral foramina 205 become big method be infeasible, and general adopt increase by two vertebral bodys 202, the mode of the height treatment that undergos surgery between 203.The operative treatment of present cervical spondylosis; Need walk crosswise otch in cervical region one side, cut skin tailing edge skin and walk crosswise notch sharpness incision platysma, separate along sternocleidomastoid inner edge passivity; The tissue of inboard is comprised that trachea, esophagus and thyroid retract to the inside; Locate with C arm X-ray machine after exposing interbody space,, rebuild the physiology curvature of cervical vertebra and the intervertebral height of lesion segment then through device for spreading, intervertebral bone grafting etc.This kind operative treatment mode, wound is bigger, and operating difficulty is also bigger.
Summary of the invention
The objective of the invention is to; Device for spreading between interface, the little joint of a kind of cervical vertebra is provided; It can be through strutting gap between interface, the little joint of cervical vertebra; The intervertebral foramina that supplies nerve root to pass is become greatly, and recover height and physiology curvature between cervical vertebral body, reduce the wound of cervical operation treatment and reduce operating difficulty.
Above-mentioned purpose of the present invention can adopt following technical scheme to realize: device for spreading between interface, the little joint of a kind of cervical vertebra; It comprises stacked first parts and second parts up and down; These first parts are connected with the rear end of second parts; Its front end forms free end, between these first parts and second parts, is provided with the front end device for spreading, and this front end device for spreading is arranged to; Before first parts and second parts are inserted between interface, the little joint of cervical vertebra, make the front end of first parts and second parts be in the state of closing, after first parts and second parts are inserted between interface, the little joint of cervical vertebra, the front end of first parts and second parts is opened.
In the present invention, said device for spreading comprises first parts and second positioning parts positioner in the front end deployed position.
In an optional embodiment of the present invention; Said front end device for spreading can be the utricule that is arranged between first parts and second parts, on this utricule, is provided with the inlet that supplies bone cement to charge into, after first parts and second parts are inserted between interface, the little joint of cervical vertebra; Can in this utricule, charge into bone cement; Make utricule expand, thereby the front end of first parts and second parts is strutted, make first parts and second parts be in the open state of front end.
In another optional embodiment of the present invention; Described front end device for spreading can be the plates that are arranged between first parts and second parts; The rear end of these plates has rotating operation portion; Thereby can make these plates turn to upright state through operating this rotating operation portion, thereby strut the front end of first parts and second parts, win parts and second parts are opened at front end from flat condition.
In this embodiment; On said first parts and second parts, be provided with the locating slot that plates is positioned at upright state; Thereby when the front end device for spreading that these plates constitute turns to upright state; Through the location of this locating slot, make win parts and second parts be in stable front end open configuration.
In another optional embodiment of the present invention; Described front end device for spreading comprises two first connecting rods that are hinged and second connecting rod; Wherein first connecting rod is articulated in first parts; Second connecting rod is articulated in second parts, is connected with the control stick that stretches out towards first parts and the second parts rear end in the articulated position of first connecting rod and second connecting rod.
As a variation of this optional embodiment of the present invention, described front end device for spreading can be parallel four-bar linkage, and it comprises four connecting rods that are hinged to parallelogram; Have four pin joints; Wherein first pin joint is positioned at the front portion of first parts and second parts, and second pin joint relative with this first pin joint is positioned at the rear portion of first parts and second parts, and the 3rd pin joint is connected in first parts; Four pin joint relative with the 3rd pin joint is connected in second parts; On first pin joint or second pin joint, be connected with control stick, thereby, make parallel four-bar linkage move through this control stick of pulling; With first pin joint and second pin joint furthers or away from, thereby win parts and second parts opened or close.
In above-mentioned optional embodiment; Rear end at said first parts and second parts can have fixed muffle; Said control stick passes this fixed muffle; And on this control stick, have and cooperate localized elastic locking piece with this fixed muffle, thereby through the cooperate deployed position that lock this first parts and second parts of this elastic locking piece with fixed muffle.
In the present invention, said first parts and second parts can be plates.
In the present invention, the rear end of said first parts and second parts can pivot through pivot and link together; Perhaps on one of them of first parts and second parts, be provided with arcuate groove, be formed with arc bump at another, this arc bump is entrenched in the arcuate groove, thereby forms being rotatably connected of first parts and second parts; Perhaps between the rear end of first parts and second parts, be connected with flexible connecting member, for example sheet rubber, hinge etc., thus form being rotatably connected of first parts and second parts.Perhaps be provided with the 3rd parts in the rear end of first parts and second parts, said first parts are connected with the rear end one of second parts or are hinged on the 3rd parts.Said front end device for spreading includes operating parts, and said the 3rd parts are provided with unthreaded hole or screwed hole, passes for the operating parts of said front end device for spreading.
In the present invention; Rear end at said first parts and second parts can be provided with positioning boss; So that when this device for spreading is inserted between interface, the little joint of cervical vertebra; This positioning boss can be replaced in location, the outside, the little joint of cervical vertebra, avoids device for spreading too much to be inserted in the gap between interface, the little joint of cervical vertebra.
Adopt said structure of the present invention, effect of the present invention is significant: because the rear end of device for spreading links together between interface, the little joint of cervical vertebra of the present invention, front end is a free end; After being inserted between interface, the little joint of cervical vertebra; The front end of this device for spreading opens, thereby with angled the strutting in gap between interface, the little joint of cervical vertebra, makes intervertebral foramina become big; And recovered height and the physiology curvature between cervical vertebral body simultaneously, can reach extraordinary treatment of cervical spondylopathy effect; Itself just have the gap owing between interface, the little joint of cervical vertebra simultaneously, and be positioned at the nape of human body, adopt Minimally Invasive Surgery to insert between interface, the little joint of cervical vertebra from the device for spreading of the present invention that nape will be in the state of closing; The front end of this device for spreading is strutted get final product, compare with existing operative treatment, not only wound is little; Reduced patient's misery of performing the operation; Post-operative recovery is fast, and operating difficulty is little, has also reduced surgery cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is in the structural representation of normal physiological state for the cervical part of esophagus spinal column;
Fig. 2 is the structural representation after the cervical part of esophagus spinal column generation pathological changes;
Fig. 3 is the front end of a kind of embodiment of device for spreading between interface, the little joint of the cervical vertebra of the present invention view of closing;
Fig. 4 removes the view of overlooking behind first parts for device for spreading between interface, the little joint of cervical vertebra shown in Figure 3;
Fig. 5 is the front end open configuration sketch map of device for spreading between interface, the little joint of Fig. 3 cervical vertebra;
Fig. 6 is a kind of modified configuration sketch map of device for spreading between interface, the little joint of cervical vertebra shown in Figure 3;
Fig. 7 is the front end open configuration sketch map of device for spreading between interface, the little joint of cervical vertebra shown in Figure 3;
Fig. 8 is inserted into the sketch map between interface, the little joint of cervical vertebra for device for spreading between interface, the little joint of cervical vertebra of the present invention, and wherein device for spreading is in the state of closing between interface, the little joint of cervical vertebra;
Fig. 9 is that device for spreading is in front end open configuration sketch map between interface, the little joint of cervical vertebra of the present invention after being inserted between interface, the little joint of cervical vertebra;
Figure 10-Figure 12 is several kinds of rear end syndeton sketch maps of device for spreading between interface, the little joint of cervical vertebra of the present invention;
Figure 13 is the another kind of embodiment structural representation of device for spreading between interface, the little joint of cervical vertebra of the present invention; Wherein utricule is in and is softened state;
Figure 14 is the utricule softened state sketch map of device for spreading between interface, the little joint of cervical vertebra shown in Figure 13;
Figure 15 is another embodiment structural representation of device for spreading between interface, the little joint of cervical vertebra of the present invention, and wherein the front end device for spreading is in the state of closing;
Figure 16 is the front end open configuration sketch map of device for spreading between interface, the little joint of cervical vertebra shown in Figure 15;
Figure 17 is a kind of variation sketch map of embodiment shown in Figure 15, and wherein the front end device for spreading is the state that closes;
Figure 18 is the front end open configuration sketch map of device for spreading between interface, the little joint of the cervical vertebra of Figure 17;
Figure 19 is a kind of location structure sketch map of front end device for spreading of the present invention.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Therefore and do not mean that and limit in description, only be used for reference at this employed some term.For example, such as " on ", term such as D score, " top ", " below " is meant the direction in the accompanying drawing of institute's reference.Only if spell out in the literary composition, term " first ", " second " and other this type of number of relating to structure do not hint order or order.
Like Fig. 3-shown in Figure 19; The invention provides device for spreading 1 between interface, the little joint of a kind of cervical vertebra; It comprises stacked first parts 11 and second parts 12 up and down; These first parts 11 are connected with the rear end of second parts 12; Its front end forms free end, between these first parts 11 and second parts 12, is provided with front end device for spreading 13, and this front end device for spreading 13 is arranged to; Before first parts 11 and second parts 12 are inserted between interface, the little joint of cervical vertebra, make the front end of first parts 11 and second parts 12 be in the state of closing, after first parts 11 and second parts 12 are inserted between interface, the little joint of cervical vertebra, the front end of first parts 11 and second parts 12 is opened.
When cervical spondylosis being undergone surgery treatment; Like Fig. 8, shown in Figure 9,, the front end that is in of the present invention is closed that device for spreading 1 is inserted in the gap 206 between interface, the little joint of cervical vertebra (shown in Figure 8) between the interface, the little joint of cervical vertebra of state earlier through the cervical region rear aperture of Minimally Invasive Surgery the patient; Then; Through operation front end device for spreading 13, make first parts 11 of device for spreading 1 between interface, the little joint of cervical vertebra and the front end of second parts 12 open (shown in Figure 9), thereby the gap 206 between interface, the little joint of cervical vertebra is strutted angledly; Make intervertebral foramina 205 become big, and recovered height and the physiology curvature between cervical vertebral body simultaneously.Like this, owing to itself just have the gap between interface, the little joint of cervical vertebra, and be positioned at the nape of human body; Adopt Minimally Invasive Surgery to insert between interface, the little joint of cervical vertebra from the device for spreading of the present invention that nape will be in the state of closing; The front end of device for spreading 1 is strutted can reach extraordinary treatment of cervical spondylopathy effect, compare with existing operative treatment, not only wound is little; Reduced patient's misery of performing the operation; Post-operative recovery is fast, and operating difficulty is little, has also reduced surgery cost.
In the present invention; Device for spreading 1 can further comprise the positioner that first parts 11 and second parts 12 is positioned at the front end deployed position between interface, the little joint of said cervical vertebra; Locating slot 133 for example shown in Figure 5; Elasticity locating piece 171 shown in Figure 19 and fixed muffle 17 cooperate location structure etc., thereby make that device for spreading 1 can make that the gap 206 between interface, the little joint of cervical vertebra is in stable softened state between interface, the little joint of cervical vertebra of the present invention after front end opens.
In the present invention; Like Fig. 3, Fig. 6, Figure 13, Figure 15, shown in Figure 17; Said first parts 11 and second parts 12 can be plates; Thereby it is thinner to make between interface, the little joint of cervical vertebra of the present invention that device for spreading 1 is in when closing state thickness, can be inserted into comparalive ease in the gap 206 between interface, the little joint of cervical vertebra.
In the present invention; Like Fig. 3, Fig. 6, Figure 15, shown in Figure 17; Rear end at said first parts 11 and second parts 12 can be provided with positioning boss 16; So that when this device for spreading 1 is inserted between interface, the little joint of cervical vertebra, this positioning boss 16 can be replaced in location, the outside, the little joint of cervical vertebra, thus the on position of device for spreading 1 between interface, the little joint of cervical vertebra, location.
Through several specific embodiments, come to explain in more detail the structure of device for spreading between interface, the little joint of cervical vertebra of the present invention below.
Like Fig. 3-shown in Figure 9; As an optional embodiment of the present invention; In the present embodiment, described front end device for spreading 13 can comprise the plates 131 that are arranged between first parts 11 and second parts 12, and the rear end of these plates 131 has rotating operation portion 132.As shown in Figure 3, shown in Figure 8; When these plates 13 are in flat condition; First parts 11 of device for spreading 1 and the front end of second parts 12 are in the state of closing between interface, the little joint of cervical vertebra; Make that device for spreading 1 has less size between interface, the little joint of this cervical vertebra on thickness, be convenient to be inserted in the gap 206 between interface, the little joint of cervical vertebra through operation technique.Like Fig. 5, shown in Figure 9; After device for spreading 1 is inserted in the gap 206 between interface, the little joint of cervical vertebra between interface, the little joint of this cervical vertebra; Can make this plates 131 turn to upright state through the rotating operation portion 132 of operation front end device for spreading from flat condition; The front end of first parts 11 and second parts 12 is strutted, thereby win parts 11 and second parts 12 are opened at front end, with gap 206 angled the strutting between interface, the little joint of cervical vertebra; Thereby enlarge intervertebral foramina 205, recover intervertebral height and physiology curvature.
In this embodiment; As required; When needs took out between this cervical vertebra between interface, little joint device for spreading 1, rotating operation portion 132 round about made plates 131 turn to flat condition from upright state; Remove the support force of these plates to first parts 11 and second parts 12; Make the front end of the win parts 11 and second parts 13 return to the state of closing, the size of device for spreading 1 on thickness becomes smaller between interface, the little joint of cervical vertebra like this, thereby takes out the gap 206 between interface, the little joint of cervical vertebra with comparalive ease.
As shown in Figure 4; In the present embodiment; On said first parts 11 and second parts 12, be provided with the locating slot 133 that plates 131 is positioned at upright state; Thereby when these plates 131 turn to upright state,, make win parts 11 and second parts 12 be in stable front end open configuration through the location of this locating slot 133.
Like Fig. 3-shown in Figure 7, in the present embodiment, can be provided with the 3rd parts 15 in the rear end of said first parts 11 and second parts 12, the rear end one of described first parts 11 and second parts 12 is connected on the 3rd parts 15.Described positioning boss 16 also can be integrally formed on the 3rd parts 15.Like Fig. 3-shown in Figure 7; For ease of operation; On the 3rd parts 15, be formed with the hole 151 that the rotating operation portion 132 that supplies front end device for spreading 13 is passed, the outer end size of this rotating operation portion 132 can be greater than the external diameter in this hole 151, and can have the groove (like flat recess, cross recess etc.) that operating grip or confession instrument insert; Thereby can be easily through pulling this operating grip or utilizing instrument that rotating operation portion 132 is rotated, the front end of the win parts 11 and second parts 12 opened or close.
Like Fig. 3-shown in Figure 5, the hole 151 that supplies rotating operation portion 132 to pass on said the 3rd parts 15 can be unthreaded hole.Like Fig. 6, shown in Figure 7; A variation as present embodiment; The hole 151 that supplies rotating operation portion 132 to pass on said the 3rd parts 15 can be screwed hole; On the relevant position of rotating operation portion 132, be formed with it the thread segment that cooperates, this rotating operation portion 132 is threaded on the 3rd parts 15, thereby the front end of the win parts 11 and second parts 12 is opened or closes through rotating this rotating operation portion 132.In this example, itself have certain positioning action owing to be threaded, can on first parts 11 and second parts 12, locating slot be set yet.
Embodiment 2
Like Figure 13, shown in Figure 14, as another optional embodiment of the present invention, in the present embodiment, said front end device for spreading 13 can be the utricule 134 that is arranged between first parts 11 and second parts 12, on this utricule 134, can be provided with inlet 135.Shown in figure 13; Before device for spreading 1 is inserted into the gap 206 between interface, the little joint of cervical vertebra between interface, the little joint of this cervical vertebra; This utricule 134 is in relaxed state; Win parts 11 and second parts 12 are superimposed together, thereby on thickness, have smaller size, be convenient to be inserted in the little interarticular gap 206 of cervical vertebra; Shown in figure 14, after first parts 11 and second parts 12 are inserted between interface, the little joint of cervical vertebra, can in this utricule 134, charge into bone cement through this inlet 135; Make utricule 134 expand; The front end of first parts 11 and second parts 12 is strutted, make first parts 11 and second parts 12 be in the open state of front end, thereby strut the gap 206 between interface, the little joint of cervical vertebra; Enlarge intervertebral foramina 205, recover intervertebral height and physiology curvature simultaneously.
In the present embodiment, the rear end of said first parts 11 and second parts 12 can be connected like Figure 13, shown in Figure 14 being connected on the 3rd parts 15 through one.On the 3rd parts 15, can have hole 151, the conduit that injects bone cement with the inlet 135 that feeds to utricule 134 inserts.Certainly, first parts 11 also can adopt accompanying drawing 10-syndeton shown in Figure 12 to be connected with the rear end of second parts 12 in the present embodiment, and the while also can form porose in the rear end of first parts 11 and/the second parts 12, passes (not shown) for conduit.
In the present embodiment; Charge into after bone cement and bone cement solidify at the utricule 134 between first parts 11 and second parts 12; The front end of these first parts 11 and second parts 12 will be in open configuration always; Thereby device for spreading 1 generally is used under the situation about need not pull down between interface, the little joint of the cervical vertebra of present embodiment; For example for bigger patient of age, behind device for spreading 1 between implantation interface, the little joint of this cervical vertebra, device for spreading 1 need forever be stayed the intravital situation of patient between interface, the little joint of this cervical vertebra.
Embodiment 3
Like Figure 16-shown in Figure 19; As another optional embodiment of the present invention; In the present embodiment, described front end device for spreading 13 comprises two first connecting rods that are hinged 136 and second connecting rod 137, and wherein first connecting rod 136 is articulated in first parts 11; Second connecting rod 137 is articulated in second parts 12; Be connected with the control stick 138 that stretches out towards first parts 11 and second parts, 12 rear ends in the articulated position of first connecting rod 136 and second connecting rod 137, open or close through controlling moving forward and backward of this control stick 138, make the win front end of the parts 11 and second parts 12.
Shown in figure 19; In the present embodiment; Rear end at said first parts 11 and second parts 12 can have fixed muffle 17; Said control stick 138 passes this fixed muffle 17, and on this control stick 138, has and cooperate localized elastic locking piece 171 with this fixed muffle 17, thereby through the cooperate deployed position that lock this first parts 11 and second parts 12 of this elastic locking piece 171 with fixed muffle 17.The structure of present embodiment in fact with the structure similar of umbrella; Can first parts 11 and second parts 12 be locked in the front end deployed position through this elastic locking piece 171; As required; Also can unlock, the front end of the win parts 11 and second parts 12 is closed through pushing this elastic locking piece 171.As required; Can be provided with a plurality of elastic locking pieces 171 by control stick 138; So that control stick 138 can be positioned on a plurality of latched positions, thereby make win parts 11 and second parts 12 can be in a plurality of deployed position, to adapt to different opening angle demands.
Shown in figure 15; Before device for spreading 1 is inserted into the gap 206 between interface, the little joint of cervical vertebra between interface, the little joint of this cervical vertebra; This control stick 138 is in the state of unlocking; First parts 11 and second parts 12 are superimposed together, thereby on thickness, have smaller size, are convenient to be inserted in the little interarticular gap 206 of cervical vertebra; Shown in figure 16; After first parts 11 and second parts 12 are inserted in the gap 206 between interface, the little joint of cervical vertebra, can drive first connecting rod 136 and open through pulling control stick 138 with second connecting rod 137; The front end of first parts 11 and second parts 12 is strutted; Through the locking of elastic locking piece 171, make first parts 11 and second parts 12 be in stable front end open configuration, thereby strut the gap 206 between interface, the little joint of cervical vertebra simultaneously; Enlarge intervertebral foramina 205, recover intervertebral height and physiology curvature simultaneously.
Like Figure 17, shown in Figure 180; As a variation of present embodiment, front end device for spreading 13 can be parallel four-bar linkage, and it comprises four connecting rods 1301,1302,1303,1304 that are hinged to parallelogram; And have four pin joints 1305,1306,1307,1308; Wherein first pin joint 1305 is positioned at the front portion of first parts 11 and second parts 12, is positioned at the rear portion of first parts 11 and second parts 12 with these first pin joint, 1,305 second relative pin joints 1306, and the 3rd pin joint 1307 is connected in first parts 11; Be connected in second parts 12 with the 3rd pin joint 1307 the 4th relative pin joints 1308; On first pin joint 1305 or second pin joint 1306, be connected with control stick 138, thereby, make parallel four-bar linkage move through this control stick of pulling; First pin joint 1305 and second pin joint 1306 further or away from, thereby the front end of the win parts 11 and second parts 12 opened or close.In this variation; Also can adopt detent mechanism shown in figure 19 to lock the deployed position of the front end of first parts 11 and second parts 12; Promptly has fixed muffle 17 in the rear end of first parts 11 and second parts 12; Control stick 138 passes this fixed muffle 17, and on this control stick 138, has and cooperate localized elastic locking piece 171 with this fixed muffle 17, thereby through the cooperate deployed position that lock this first parts 11 and second parts 12 of this elastic locking piece 171 with fixed muffle 17.
In present embodiment and above-mentioned variation, the rear end of said first parts 11 and second parts 12 can be connected like Figure 15, Figure 16, Figure 17, shown in Figure 180 being connected on the 3rd parts 15 through one.Described fixed muffle 17 can be formed on the 3rd parts 15, and control stick 138 passes the fixed muffle 17 on the 3rd parts 15.Certainly; First parts 11 also can adopt accompanying drawing 10-syndeton shown in Figure 12 to be connected with the rear end of second parts 12 in the present embodiment; Fixed muffle 17 can be formed on the rear end of first parts 11 or second parts 12, passes (not shown) for control stick 138.
The foregoing description is several kinds of specific embodiment of the present invention; Only be used to explain the present invention; But not be used to limit the present invention; Front end device for spreading 13 for example of the present invention can also be arranged on the compression spring between first parts 11 and first parts 12 or be arranged on the torsion spring of first parts 11 and second parts, 12 rear end link positions, can through bayonet lock or be connected first parts 11 and second parts 12 between cotton rope first parts 11 and second parts 12 are locked in closed position, and after device for spreading 1 is inserted in the gap 206 between interface, the little joint of cervical vertebra between interface, the little joint of cervical vertebra; Push bayonet lock aside or cut off cotton rope; Under the elastic reaction of compression spring or torsion spring, the front end of first parts 11 and second parts 12 opens, thereby struts the gap 206 between interface, the little joint of cervical vertebra angledly; Enlarge intervertebral foramina 205, recover cervical intervertebral height and physiology curvature simultaneously.
Claims (15)
1. device for spreading between interface, the little joint of cervical vertebra; It is characterized in that; Device for spreading comprises stacked first parts and second parts up and down between interface, the little joint of this cervical vertebra, and these first parts are connected with the rear end of second parts, and its front end forms free end; Between these first parts and second parts, be provided with the front end device for spreading; This front end device for spreading is arranged to, and before first parts and second parts are inserted between interface, the little joint of cervical vertebra, makes the front end of first parts and second parts be in the state of closing, and after first parts and second parts are inserted between interface, the little joint of cervical vertebra, the front end of first parts and second parts is opened.
2. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 1 is characterized in that, device for spreading also comprises first parts and second positioning parts positioner in the front end deployed position between interface, the little joint of said cervical vertebra.
3. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 1 is characterized in that said front end device for spreading is the utricule that is arranged between first parts and second parts, on this utricule, is provided with the inlet that supplies bone cement to charge into.
4. device for spreading between according to claim 1 or claim 2 interface, the little joint of cervical vertebra; It is characterized in that; Described front end device for spreading is the plates that are arranged between first parts and second parts; The rear end of these plates has rotating operation portion, can make these plates turn to upright state from flat condition through operating this rotating operation portion.
5. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 4 is characterized in that, on said first parts and second parts, is provided with the locating slot that plates is positioned at upright state.
6. device for spreading between according to claim 1 or claim 2 interface, the little joint of cervical vertebra; It is characterized in that; Described front end device for spreading comprises two first connecting rods that are hinged and second connecting rod; Wherein first connecting rod is articulated in first parts, and second connecting rod is articulated in second parts, is connected with the control stick that stretches out towards first parts and the second parts rear end in the articulated position of first connecting rod and second connecting rod.
7. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 6; It is characterized in that; Rear end at said first parts and second parts has fixed muffle; Said control stick passes this fixed muffle, and on this control stick, has and cooperate localized elastic locking piece with this fixed muffle, thereby through the cooperate deployed position that lock this first parts and second parts of this elastic locking piece with fixed muffle.
8. device for spreading between according to claim 1 or claim 2 interface, the little joint of cervical vertebra is characterized in that described front end device for spreading is a parallel four-bar linkage; It comprises four connecting rods that are hinged to parallelogram, has four pin joints, and wherein first pin joint is positioned at the front portion of first parts and second parts; Second pin joint relative with this first pin joint is positioned at the rear portion of first parts and second parts; The 3rd pin joint is connected in first parts, and four pin joint relative with the 3rd pin joint is connected in second parts, on first pin joint or second pin joint, is connected with control stick; Thereby through this control stick of pulling; Make parallel four-bar linkage action, first pin joint and second pin joint further or away from, win parts and second parts opened or close.
9. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 8; It is characterized in that; Rear end at said first parts and second parts has fixed muffle; Said control stick passes this fixed muffle, and on this control stick, has and cooperate localized elastic locking piece with this fixed muffle, thereby through the cooperate deployed position that lock this first parts and second parts of this elastic locking piece with fixed muffle.
10. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 1 is characterized in that said first parts and second parts are plates.
11. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 1 is characterized in that, is provided with the 3rd parts in the rear end of first parts and second parts, said first parts are connected with the rear end one of second parts or are hinged on the 3rd parts.
12. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 11 is characterized in that said front end device for spreading includes operating parts, said the 3rd parts are provided with unthreaded hole or screwed hole, pass for the operating parts of said front end device for spreading.
13. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 1 is characterized in that the rear end of said first parts and second parts pivots through pivot and links together; Perhaps on one of them of first parts and second parts, be provided with arcuate groove, be formed with arc bump at another, this arc bump is entrenched in the arcuate groove, is rotatably connected thereby form in the rear end of first parts and second parts; Perhaps between the rear end of first parts and second parts, be connected with flexible connecting member, thereby be rotatably connected in the formation of the rear end of first parts and second parts.
14. like device for spreading between claim 1 or interface, the little joint of 13 described cervical vertebras; It is characterized in that; Said front end device for spreading includes operating parts, and the rear end link position of said first parts and second parts is provided with the hole, passes for the operating parts of said front end device for spreading.
15. device for spreading between interface, the little joint of cervical vertebra as claimed in claim 1 is characterized in that, is provided with positioning boss in the rear end of said first parts and second parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910170681 CN101991457B (en) | 2009-08-27 | 2009-08-27 | Interfacial distracting device of cervical vertebra facet joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910170681 CN101991457B (en) | 2009-08-27 | 2009-08-27 | Interfacial distracting device of cervical vertebra facet joint |
Publications (2)
| Publication Number | Publication Date |
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| CN101991457A CN101991457A (en) | 2011-03-30 |
| CN101991457B true CN101991457B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910170681 Active CN101991457B (en) | 2009-08-27 | 2009-08-27 | Interfacial distracting device of cervical vertebra facet joint |
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| CN (1) | CN101991457B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1486167A (en) * | 2001-01-12 | 2004-03-31 | �ֶ������ɷ�����˾ | Surgical instrument for implanting an intervertebral prosthesis |
| CN101035490A (en) * | 2004-09-23 | 2007-09-12 | 脊骨分离有限公司 | Improved destractor for lumbar insertion instrument |
| CN101361673A (en) * | 2007-08-09 | 2009-02-11 | 邹德威 | Angle-adjustable intervertebral expansion device |
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2009
- 2009-08-27 CN CN 200910170681 patent/CN101991457B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1486167A (en) * | 2001-01-12 | 2004-03-31 | �ֶ������ɷ�����˾ | Surgical instrument for implanting an intervertebral prosthesis |
| CN101035490A (en) * | 2004-09-23 | 2007-09-12 | 脊骨分离有限公司 | Improved destractor for lumbar insertion instrument |
| CN101361673A (en) * | 2007-08-09 | 2009-02-11 | 邹德威 | Angle-adjustable intervertebral expansion device |
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| CN101991457A (en) | 2011-03-30 |
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