CN110141345A - A kind of dual-purpose pedicle nail of undercut mark of anti-explosion filaments - Google Patents

Abstract

The present application relates to a kind of applied to the implantation material arrived used in Orthopeadic Surgery and neurosurgery, particularly as the dual-purpose pedicle nail of undercut mark for being a kind of anti-explosion filaments being laid out using side stick；It is this will be in traditional pedicle nail, pitman and screw, it is placed in the structure type of nail seat centre, changes into that pitman is side-mounted, becomes the pedicle nail fundamentally solved as " quick-fried silk " problem for suffering from many years, and there is lower incisura, and can be carried out the switching of " dynamic is followed closely " with " fixing glue " two kinds of forms, to solve in the course of surgery, when strutting or clamping adjacent two pedicle nail, the deviation being likely to occur also alleviates the trouble of stock.

Description

A kind of dual-purpose pedicle nail of undercut mark of anti-explosion filaments

Technical field

The present application relates to a kind of applied to the implantation material arrived used in Orthopeadic Surgery and neurosurgery, particularly as It is the dual-purpose pedicle nail of undercut mark using a kind of anti-explosion filaments of side stick layout；It is this fundamentally to solve to suffer from The pedicle nail of " quick-fried silk " problem of many years, and there is lower incisura, and can be carried out " dynamic is followed closely " and " fixing glue " two kinds of shapes The switching of formula, to solve in the course of surgery, when strutting or clamping adjacent two pedicle nail, in fact it could happen that deviation, also Alleviate the trouble of stock.

Background technique

Currently, to the traditional scheme for the treatment of disc herniation and spinal canal stenosis, being in Orthopeadic Surgery and field of neurosurgery Theoretical according to " rigidly fixing fusion " for being referred to as " gold law " and matching used pedicle nail, including uniaxial follow closely and universal Nail, collectively termed as " fixing glue "；And with clinical medical development, derive a new academic school, i.e., it is " non-fused solid It is fixed " it is theoretical, meet this theoretical pedicle nail gradually received by art circle, is then referred to as " dynamic is followed closely "；Both are different The main distinction of the pedicle nail (referred to as following closely below) of type is: after the completion of operation, entirely with " fixing glue " function Pedicle nail is connected to a rigid body together with the lesion centrum being implanted by rivet nut；And there is the vertebral arch of " dynamic is followed closely " function Root nail, the lesion centrum being implanted by rivet nut then still can make micro swing, at energy with respect to nail seat and pitman Enough while backbone is protected in support, the stress for reducing adjacent segment is concentrated, to reduce the generation of Adjacent segment degeneration and overflow Prolong.

Since " fixing glue " and " dynamic is followed closely " are that respectively have its advantage, clinically, in same operation, often to make simultaneously Using the nail of these two types of types, Ji Shu circle is known as " mashed up ", so, it is necessary to while preparing that these two types of nails are spare at the scene, this just exists Clinically add the difficulty of stock.

Moreover, the nail of these two types of types, is essentially all that U-shaped opening through slot is provided with right above the axial line of nail seat, The opening of this opening through slot, is additionally provided with the internal screw thread matched with plug screw, and plug screw needs to connect by enough oppressive forces Stick is fixed in opening through slot, but this is simultaneously, and plug screw can also generate certain component, and the two sides for the through slot that is open are strutted outward, It is easy to cause plug screw to return pine；Although using new technique in recent years, i.e., the thread form of plug screw is arranged to negative angle, to reduce spiral shell to the greatest extent Fill in the cross component force generated, but fail fundamentally to solve this problem, plug screw return pine cause pitman fall off it is equal caused by perform the operation The malpractice of failure, happens occasionally.

Again due to the component compositing characteristic of this class formation, incisura, (term in art circle generally can approximatively be thought, just It is the height of nail seat) generally between 16 ~ 19mm, it may be assumed that incisura is higher, increases the pain that implantation material generates muscular irritation Deng not.

Further, since one of program is to need to strut adjacent pedicle nail during operation, then fill out Enter TAGE, then clamp, is finally just locked pitman with plug screw；This in the uniaxial nail belonged in " fixing glue ", then be easy into Row, but due to scene operation and the characteristics of human spine, clamping tool can only be acted in nail seat, the nail tail of " dynamic is followed closely " in Nail seat can swing relatively, and in clamping process, be influenced by CAGE, and tail is more difficult accomplishes to keep the plumbness to nail seat for nail, The result is that affecting the performance of the functional characteristics of " dynamic is followed closely ".

How " quick-fried silk " this lead to operative failure an important factor for is inherently eliminated, meanwhile, it reduces " cut as far as possible Mark ", and it is able to achieve the mutual conversion of " fixing glue " with " dynamic is followed closely ", and the conveniently correct locking in art to " dynamic is followed closely ", this It is problem clinically in the urgent need to address.

Summary of the invention

For industry to pedicle nail clinically " anti-explosion filaments " in the urgent need to address, " drop incisura ", " interchangeable " and " Yi Suoding " four problems in the technical solution disclosed in the present patent application, obtain effective solution method: being exactly will be even It takes over the baton and is arranged to " side-mounted ", the pitman for occupying incisura is set to the side of nail seat, rather than as traditional way is arranged Centre above the axis of nail seat, this is just to reduce incisura and vacateed comparable space.

Also, since pitman is placed in side, the nail seat of screw thread pair is formed with plug screw, then can change traditional " U-shaped Open slot " structure, and be arranged to encircle shape, this just fundamentally solves the relatively weak opening through slot of structure by the side of plug screw Outside component and " strutting outward " is formed by " quick-fried silk " phenomenon.

Since pitman is placed in side, no longer control of the barrier plug screw to rivet nut, this is just to be arranged again among plug screw One control screw is used to control the selectivity of the bulb in rivet nut and becomes possibility, and exactly this possibility just makes this Pedicle nail disclosed in patent application has the function of " interchangeable ", thus only need to be for a nail, being just able to satisfy clinically has Required " mashed up ", also just solves the problems, such as stock.

And " dynamic is followed closely " can be switched to the function of " fixing glue " during surgery as utilizing, it is only necessary to common work Tool, it is possible to which adjacent two nail is strutted or clamped and keeps rivet nut vertical with nail seat easily；Like this, disclosed in the present patent application Technical solution, just can be well solved four problems clinically in the urgent need to address.

Further, the plug screw has internal and external threads, makees the control that controls to the bulb in rivet nut with acting on respectively Internal screw thread in the inner cavity of screw-making and the nail seat matches；The outwardly extending flat upper cover in plug screw top, center There is the groove for driver, is locked in nail seat after the hook frame being compressed and is socketed.

Still further, the hook frame is the tubular body of an inner wall belt taper, inner wall and the nail seat appearance Face matches；In the side of this tubular body, it is provided with a notch, in the top of this notch, extends outward a pressure bar Arm, pressure bar arm are equipped with a downwardly open U-lag, this notch and pressure bar arm, together with the superolateral folder stick groove of nail seat, altogether With clamping and the fixed pitman.

Still further, the pitman, just continues to use the general part that conventional vertebral pedicle nails on, to save R & D Cost； And rivet nut, also substantially continue to use general part, the lower semisection of the rivet nut, i.e. tail portion, for externally threaded spike body, from described The under shed of nail seat stretch out and be implanted into the centrum of patient；And the upper half of rivet nut, i.e. head, according to it is different clinically It is required that being set as bulb type, external spring type and suspension type rivet nut.

Preferably, the bulb type rivet nut, head is orbicule, and is equipped with a plane, and plane central has one and rotation Has the blind hole that matches, in this blind hole, there are one half round pools；The external spring type rivet nut, head are one section of spring, Spring screws in the lower opening of nail seat and fixes；The suspension type rivet nut, head are orbicule, and are set there are two one Pair symmetrical blind hole, this blind hole is suspended on from a pair of pin that the nail seat is stretched out and nails on, and makees swinging axle with this pin.

Still further, the nail seat, upper semisection, outer surface band is tapered, and inner cavity is that processing internal thread is empty Chamber；The cylinder of Rouno Cormer Pregrinding Wheel is fallen for band, and is provided with one for supporting and the folder stick for the stick that is clamped and connected is recessed in the outer surface of lower semisection Slot, inner cavity is the cavity in incomplete sphere, and has under shed, and the rivet nut head is just fixed about in this cavity Beam or by flexible constraint.

Still further, it may be preferred that the control screw is placed in the plug screw center, using its in plug screw The internal screw thread of centre is formed by screw thread pair, can compress directly or by medium or loosen the control to rivet nut, thus realize " Gu Switching of the fixed nail " with " dynamic is followed closely ".

Still further, it may be preferred that one group of optional accessory of increase, can be better achieved the flexible constraint to pedicle nail Or rigid constraint: it utilizes in the plug screw in the following, process an inner cavity, and intracavitary in this, successively in placement Cylindrical flat control block and line-spacing is slightly larger than the spring of line footpath and central column and downwardly open and rivet nut bulb The briquetting matched, by the effect of spring, control block bears against the inner cavity of plug screw upwards, and briquetting bears against downwards the ball The rivet nut bulb of hair style rivet nut is in flexible constraint, and in this case, whole piece of pedicle nail is in the function of " dynamic is followed closely "；And it ought incite somebody to action After the inner bolt hole in the control screw precession plug screw center of selection, so that it may control block is pressed downward, and briquetting will be by spring It is urged to extreme degree, is deformed into and is commonly called as " close spring " state, i.e., each coil is mutually urgent close to and then pressing to down briquetting It moves, finally compresses the bulb in rivet nut using its downward cambered surface, realize and switch to " fixing glue ".

Further it may be preferred that rivet nut bulb is converted into one section of spring, the rivet nut of the external spring type is formed, That is: one end of spring, connects and is fixed on the position of former connecting ball head on the end face of rivet nut tail portion, and the other end then screws in and exists In the under shed for the threaded property matched with the outer diameter of the spring that nail seat center processes, and it is welded and fixed, this Under state, tail and nail seat are followed closely due to the effect for the spring contacted therebetween, are each other in soft connection；And works as and utilize the interior of plug screw center After screw hole screws in the lock-screw, in the cavity among the section of stretching out insertion spring of lower end, cause spring curved Song, i.e. nail seat and spring and nail tail, are linked to be a rigid body, each other in being fixedly connected；That is: the use of the described control screw with It is no, entire pedicle nail can be switched to two kinds of functional status, to solve the use purpose of " interchangeable ".

Still further, it may be preferred that by the rivet nut bulb perpendicular to the position of its axis and the centre of sphere excessively, symmetrically A pair of of blind hole is processed, the suspension type rivet nut is formed, and on the corresponding position of nail seat, also processes a pair of of through-hole, The pin just passes through this through-hole, into the blind hole of rivet nut bulb two sides；In this case, rivet nut will not be slided from nail seat Out, and rivet nut can only be around the axis swing of the pin；Likewise, can also make this pedicle of vertebral arch by set control plug screw Nail realizes the switching of " single shaft nail " with " dynamic is followed closely " two states.

Still further, also " side stick " feature of the present patent application is applied in traditional pedicle nail, so that passing " universal nail " in the fixing glue of system also has the effect of " anti-explosion filaments " and " drop incisura ".

Beneficial effect

The beneficial effect of the present patent application is exactly to be that is, by pitman side by improving the structure type of conventional vertebral pedicle nail The transformation of U-shaped opening through slot is circularized and provides possibility, this just fundamentally solves " quick-fried silk " hardly possible for perplexing clinical many years Topic；Enough spaces also are provided to reduce " incisura " simultaneously；In addition, selected control screw, by be located in plug screw The cooperation of the internal screw thread of centre can also realize the switching of two states, so that clinically, it is only necessary to be equipped with a nail, Ji Keman The stock problem of sufficient clinically " mashed up "；And since such switching can be carried out at any time, it is more advantageous to during surgery, adjustment will nail The operation of " clamping " and " loosening " is carried out, to fill the inherent advantages that part plays dynamic nail.

In conclusion the present patent application has novelty and creativeness, further, it is possible to four clinically faced solved Therefore a problem has stronger practicability, and can generate great social benefit.

Detailed description of the invention

Hereinafter, in conjunction with attached drawing and specific embodiment, further explanation explanation is made to the present patent application；

Fig. 1 is the X-Y scheme and effect picture of the present patent application；

Fig. 2 is the partial sectional view and explosive decomposition figure of the embodiment one of the present patent application；

Fig. 3 is the X-Y scheme of the embodiment two of the present patent application and the effect picture of part；

Fig. 4 is the switching schematic diagram of the two states of the embodiment two of the present patent application；

Fig. 5 is the X-Y scheme of the embodiment three of the present patent application and the effect picture of part；

Fig. 6 is the switching schematic diagram of the two states of the embodiment three of the present patent application；

Fig. 7 is the X-Y scheme of the embodiment four of the present patent application and the effect picture of part；

Fig. 8 is the X-Y scheme of the embodiment five of the present patent application and the effect picture of part；

Fig. 9 is the schematic illustration that the present patent application can solve " quick-fried silk " Yu " incisura "；

Figure 10 is the schematic illustration that the present patent application can solve " locking " Yu " exchange "；

Wherein:

Plug screw 1；Hook frame 2；Pitman 3；Rivet nut 4；Nail seat 5；Control screw 6；Spring 7；

Control block 8；Briquetting 9；Pin 0；(clamper G；)

Plug screw external screw thread 11；Plug screw inner bolt hole 12；Plug screw upper cover 13；

Hook frame inner wall 21；Hook frame notch 22；Hook frame pressure bar arm 23；Pressure bar slot 24；

Rivet nut bulb 41；Rivet nut tail portion 42；Half round pool 43 in bulb；Rivet nut adaptation groove 44；

Nail seat male cone (strobilus masculinus) 51；Nail seat internal screw thread 52；Nail seat presss from both sides stick groove 53；Nail seat under shed 54；

Briquetting Internal Spherical Surface 91；Briquetting end face 92.

Specific embodiment

In order to be easier to understand the practicability of the present patent application, attached drawing is first passed through, brief introduction is clinically required at present to be solved Four problems certainly: as shown in 9 right side effect picture of attached drawing, traditional pedicle nail is essentially all logical using opening by plug screw Screw thread on slot oppresses downwards pitman in the U-shaped opening through slot of nail seat, to reach the connection of adjacent nail；Plug screw to Under it is bigger to the active force of pitman while generated also bigger to the cross component force F of nail seat, in weaker nail seat Opening through slot upper end is deformed, and when being flared out increase to a certain extent, the cooperation of screw thread pair weakens, or even failure, this is just It is referred to as " quick-fried silk " phenomenon for perplexing Liao Shu circle many years；In addition, among Fig. 9, shown in be traditional pedicle nail two dimension Figure, pitman 3 and plug screw 1 be it is placed in the middle, necessarily occupy certain height, and the two dimension of the present patent application shown in left side Figure, the pitman 3 is moved to side, effectively vacates the space in short transverse, reduction incisura height h, up to 6 ~ 9mm；

In addition, as shown in Figure 10, why dynamic nail generates the function of " On Fluctuations promote fusion ", it is necessary to after the completion of operation, Its rivet nut tail portion 42 still can make one relative to the pitman 3 and nail seat 5 being integrally fixed together with the centrum being implanted into The swing of fixed positive negative direction, shown in the nail on the left of Figure 10；And due in the course of surgery, not yet locking the plug screw When 1, it is necessary to clamping device G to be used, first struts adjacent nail, merging is referred to as the supporter (shown among Figure 10) of CAGE, by In clamping device G position in nail seat 5, and rivet nut 4 can be swung with respect to nail seat 5, when again by adjacent nail clip Tightly, and after locking plug screw 1, it often will form as shown on the right, why dynamic nail can be presented the swing angle of dynamic function Half has been lost, what is more, has arrived extreme angles, this just affects the performance of the effective efficiency of dynamic nail；So if can support Open or clamping process in so that the rivet nut 4 of the pedicle nail and nail seat 5 keep coaxial line, in the state of single shaft nail, then may be used Situation shown in being effectively prevented from the right side of Figure 10 occurs.

The present patent application the technical solution adopted is that: pitman 3 is arranged to " side-mounted ", to fundamentally cancel pole It is also easy to produce the structure type equipped with U-shaped opening slot of the nail seat 5 of " quick-fried silk ", main points is specifically improved and makees below specifically Bright explanation:

As can be seen that the upper semisection of the nail seat 5 from Fig. 1 and the X-Y scheme and explosive view of the present patent application shown in Fig. 2 Nail seat male cone (strobilus masculinus) 51 matched with the inner wall 21 of the hook frame 2 with tapered；Inner cavity is the sky for being provided with internal screw thread 52 Chamber is matched with the external screw thread 11 of the plug screw 1, and the locking of hook frame 2 and fixation are placed on nail seat 5 to realize On；Then, since the structure type of U-shaped opening slot is cancelled, " quick-fried silk " phenomenon is fundamentally solved, moreover, external screw thread 11 With screw thread pair composed by nail seat internal screw thread 52, the biggish negative reverse angle threads of difficulty of processing need not be also used, and can use and add Work is easy to common triangular tooth-shaped, is significantly reduced processing charges, in this R&D process, is used general M8 ~ M10 Triangular tooth regular screw threads can reach ideal locking effect.

The hook frame 2 is a hollow cylindrical tubular body, to be provided with one convenient for carrying out the fixation to pitman 4 jointly A notch 22, this notch precisely exposes the nail seat folder stick groove 53 in the nail seat 5, above hook frame notch 22 is corresponding, A pressure bar arm 23 is extended outward, the inner wall 21 with taper can be accurately overlapped with the axis of nail seat 5 joined together, To be accurately positioned and combine downwardly open pressure bar slot 24 and the nail seat of pressure bar arm 23 to press from both sides stick slot 53, common implementing is to connection The locking of stick 3；In this R&D process, set taper is 10 degree, can achieve the purpose that intrinsic precise positioning.

The plug screw 1, is one section of screw, center be equipped with one with it is described be referred to as control screw 6 match it is interior Screw hole 12 is equipped with a plug screw upper cover 13 on the top of plug screw 1, and center is equipped with a slot for driver, uses work Tool compresses hook frame 2, to lock pitman 3 using plug screw upper cover 13；And the control screw 6, in this R&D process, The screw that its main body is M4 is set, and secondary part may also be arranged to be suitble to the cooperation pair of each embodiment being slightly different The feature of elephant.

The rivet nut bulb 41 is constrained on the lower end of the nail seat inner cavity, and swingable angle is limited by described The lower diameter to opening 54 of nail seat 5, and can be according to the requirement and the rivet nut joined together used of different academic schools clinically 4 concrete specification is different, is set as 6.3 ~ 6.8mm, and the swing angle of ± (2 ~ 10 °) can be realized.

Before clinical application, the rivet nut 4 has been assemblied in the nail seat 5, and has been arranged to not deviate from, In clinical application, it is only necessary to driver is used, rivet nut 4 can be implanted into the centrum of lesion, then be placed in the hook frame 2, Pitman 3 is placed in again in the pressure bar slot 24 of the hook frame 2 of adjacent nail, realizes connection；Outside due to hook frame inner wall 21 and nail seat The conical surface 51 is tapered in cooperation so that the pressure bar slot 24 on hook frame 2 be in half of circumference cambered surface, automatically with the folder in nail seat Cambered surface on stick groove 53 is formed by axial line coincidence each other, when the plug screw 1 is screwed in nail seat inner wall 21 and is locked Afterwards, plug screw upper cover 13 oppresses hook frame 2, the two cambered surfaces make about 250 ° of containing to the circumference of connection stick 3 jointly, it is sufficient to will It constrains and locks, then can be so that plug screw 1, hook frame 2, pitman 3 and nail seat 5 are linked into an entirety, and rivet nut bulb 41 The swing of certain angle is made around its centre of sphere in the inner cavity of nail seat 5, under this state, is presented, and is exactly the function of " dynamic is followed closely ".

Preferable, it can screw in plug screw inner bolt hole 12, as needed by the control screw 6 until control screw 6 The hemisphere face of least significant end, bears against half round pool 43 in bulb, and entire pedicle nail is then linked to be an entirety and is under this state Reveal the function of " fixing glue "；From this as can be seen that by the way that the control screw 6 is added, the switching of two classes nail can be realized； Moreover, in the course of surgery, when especially be clamped CAGE therebetween to adjacent two nail, this control screw 6 It is added, is avoided that the phenomenon as shown in 9 right side of attached drawing generates；It, also can be according to clinically and once clamped and be locked Removed it is required that choosing whether that screw 6 will be controlled, to meet to standby a nail is only needed, can meet whether " mashed up " it is more Kind selection, alleviates the pressure of stock.

It is the embodiment one of the present patent application institute publicity above, its main feature is that the rivet nut bulb 41 is in nail seat 5 The downward intrados of inner cavity and plug screw 1 is formed by spherical hollow space and swings, and swing angle is straight by nail seat under shed 54 Diameter is determined.

To meet clinically more high-end clinical effectiveness, the embodiment two of the present patent application institute publicity, i.e., in embodiment one On the basis of, three small parts are increased, that is, can produce micro- play along rivet nut axial (Z axis), thus by the function of dynamic nail " On Fluctuations promote fusion " theory is adequately applied；As shown in Fig. 3；The plug screw 1 is arranged to one to following The cylindrical cavity of indent, the flat control block 8 and line-spacing are commonly called as dredging spring slightly larger than the spring 7(of line footpath) it is placed in cavity It is interior, and the briquetting 9 is then placed in the top of rivet nut bulb 41；When locking plug screw 1, by the active force of spring 7, upwards top control Clamp dog 8 is pressing against downwards the end face 92 of briquetting 9 to the inner cavity top surface for being close to plug screw 1, and its briquetting Internal Spherical Surface 91, then bears against Rivet nut bulb 41, is in flexible constraint, and this restraining force, then depends on line footpath used in production spring 7 and the elastic force that presents, Under this state, entire to follow closely on the left of the center line of the X-Y scheme of attached drawing 3 and shown in the effect picture in the left side of attached drawing 4, it is in " dynamic The function of state nail ", and when by impact along rivet nut axis direction (Z-direction), spring 7 can play cushioning effect, so that Rivet nut 4 can be in the play of micro Z-direction together with the centrum being implanted into, so that the function of " dynamic is followed closely " be made to obtain sufficient body It is existing；

If the control screw 6 is oppressed downwards control block 8 by the plug screw inner bolt hole 12, the height of spring 7 is generated Variation must cause presented elastic force to generate variation, result then in generated briquetting Internal Spherical Surface 91 to the soft of rivet nut bulb 41 Property restraining force also generate variation, from this as can be seen that by be placed in and adjust control screw 6, can satisfy clinically to " dynamic The demand for the different rocking couples of nail " realized；And extreme degree, i.e. the control spiral shell once are adjusted to by such Each coil of spring 7 is urged to be deformed into and is commonly called as " close spring " state, i.e., each mutually urgent patch of coil by control block 8 by nail 6 Closely, and then briquetting 9 is pressed to and is moved down, finally compressed the bulb 41 in rivet nut using its downward cambered surface, realize to " fixing glue " Switching, this state, as shown in the right side of the effect picture on the right side and attached drawing 4 of the X-Y scheme center line of attached drawing 3.

The present patent application also publicity is a kind of with what is automatically reset, external bullet required for can satisfy certain clinically The embodiment three of spring formula, as shown in attached drawing 5 and attached drawing 6；Specific practice be the rivet nut 4 is modified into it is described external Rivet nut bulb 41 is replaced as a cylindrical spring 7 by spring rivet nut, and the end face of rivet nut tail portion 42 process one with The groove 44 that the end face of cylindrical spring 7 matches, to generate the contact surface for being conducive to welding each other, in addition, in the nail The bottom in seat center processes the under shed 54 with internal screw thread property that the outer surface of one and spring 7 matches, then will Connect with nail tail 42 and in the fixed screw-in under shed 54 of spring 7 and is welded to jail, due to the both ends of spring 7, respectively with nail Body tail portion 42 and nail seat are rigidly connected, and in embodiment one, two, utilize the inner cavity institute of the nail seat 5 of rivet nut bulb 41 The swing of work is different, receives in the case that external force especially receives impact force in rivet nut tail portion 42, rivet nut tail portion 42 can Using the bending deformation of the interlude of spring 7, while making the swing relative to nail seat 5, the spring 7 can also absorb, Alleviate this impact force, and be converted into potential energy storage, once this impact force is reduced or disappeared, is stored on spring 7 Potential energy will assist the nail tail 42 of implanted centrum, be restored back to original state；And such beneficial functions, that is, it automatically resets and has The axial enabling capabilities having, (i.e. perpendicular to the support force in the backbone direction of the z axis of nail) are that current institute, some academic school is strong Adjust the what's new that has, be also the present patent application creative, novelty and practicability good illustration.

Similarly, it is only necessary to screw in the control screw 6 in plug screw inner bolt hole 12, control screw 6 extends downwardly section Insertion is useed as in the cavity among the spring 7 on rivet nut head, until arriving in the central pit of rivet nut adaptation groove 44, so that spring 7 can not redeformation, this completes the processes for switching to " fixing glue ".

If using the suspension type rivet nut, example IV as shown in Fig. 7 is being in spherical rivet nut bulb 41 On, its centre of sphere is crossed, and perpendicular on the position of the axis of rivet nut 4, symmetrically processing two blind holes, while also in the nail 5 corresponding positions of seat also process through-hole, then put on pin 0, and the suspension type rivet nut just suspended on and be with this pin 0 Pivot center and make micro swing, and amplitude of fluctuation is controlled by nail seat under shed 54；Similarly, if control spiral shell described in merging Nail 6 controls in the constrained through-hole central in plug screw 1 in upper end of screw 6, meanwhile, the screw thread of 6 lower end of screw is controlled, by rivet nut Bulb 41 is linked to be a rigid body, therefore can not swing, the example IV of the present patent application, is exactly in this way, to realize The switching of two classes nail.

" on-fixed fusion " and " On Fluctuations promote fusion " is theoretical, is belonged to emerging in Orthopeadic Surgery and neurosurgery Front subject meets this theory, and pedicle nail with this function, referred to as " dynamic is followed closely "；However, being referred to as, " gold is fixed " rigidly fixing fusion " of rule " is theoretical, still there is its extensive use demand, that is, equally exists the tired of " quick-fried silk " and " incisura " It disturbs；The present patent application can also provide solution thus, also be the position by replacing pitman 3, from root as shown in Fig. 8 Cancel the U-shaped opening through slot being located above nail seat axis for easily causing " quick-fried silk " in sheet, is improved to using hook frame 2, placement connects Take over the baton 3；And such displacement, the height of entire nail seat is also greatly reduced, like this, generates and applies the present patent application Main two beneficial effects, here it is this practical the disclosed embodiments five.

In clinical application, pedicle nail shown in the present embodiment five has the function of " universal nail " in fixing glue, Before, the pressure ring 9 and rivet nut system have been assemblied in the inner cavity of the nail seat 5, and will not deviate from again, by institute After the rivet nut 4 stated is implanted into the centrum of patient, then successively after the set merging hook frame 2, plug screw 1 and merging pitman, but still When not locking plug screw 1, can by adjusting the swing angle of nail seat 5, to correct after the rivet nut 4 is implanted into the centrum of people, with Deviation on position existing for adjacent rivet nut, here it is " universal nail " the relatively advanced places belonged in fixing glue；And it is adjusting After the completion of whole, then the plug screw 1 is locked, the lower end surface of plug screw is oppressed briquetting end face 92, then compressed by briquetting Internal Spherical Surface 91 Rivet nut bulb 41, meanwhile, it accurately positions, so that pitman 3 is locked and press from both sides the joint of stick groove 53 and pressure bar slot 24 in nail seat In constraint；So far, each part is connected to a rigid body, this takes on the function of fixing glue.

Above-described embodiment is the present patent application preferred embodiment, and other embodiments of exhaustive the present patent application, because This, as long as any modifications, equivalent replacements, and improvements made by the description and the appended drawings content with the present patent application etc., should all wrap It is contained within the protection scope of the present patent application.

Claims (10)

1. the dual-purpose pedicle nail of undercut mark of a kind of anti-explosion filaments, by plug screw, hook frame, pitman, rivet nut, nail seat and control screw institute Composition, it is characterised in that:

The pitman, rigging position are placed in the side of the nail seat, solid for making connection with adjacent pedicle nail It is fixed；

The nail seat cooperates the screw thread pair of the encircling type of the plug screw, so that the institute that the plug screw will be socketed in the nail seat Hook frame compression is stated, and is accurately positioned by the contact surface with taper between hook frame and nail seat, so that the folder stick in nail seat is recessed Pressure bar arm on slot and hook frame can be fixed jointly and lock the pitman；

The main body of the control screw is a plain screw, by the inner bolt hole in the plug screw center, goes to realize to the nail Restrained condition between body and nail seat, to reach the switching of reversible " dynamic is followed closely " and " fixing glue ".

2. the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 1, it is characterised in that: the plug screw is equipped with Respectively with the control screw and the internal and external threads that match of nail seat inner cavity, extend a flat upper cover outside plug screw top, use It is compressed in the hook frame that will be socketed in the nail seat, upper cover center is additionally provided with the groove used for driver.

3. the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 1, it is characterised in that: the hook frame is one The tapered tubular body of inner wall belt, one side are provided with a notch, in the top of this notch, extend outward a pressure bar arm, Pressure bar arm is equipped with a downwardly open U-lag, for clamping and fixing the pitman.

4. the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 1, it is characterised in that: the nail seat, thereon Half section, outer surface band is tapered, and inner cavity is equipped with internal screw thread；Its lower semisection, outer surface are equipped with one and assist the recessed of stick that be clamped and connected Slot, inner cavity to lower end, be equipped with downwardly open.

5. the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 1, it is characterised in that: the pitman is One cylindric barred body；The rivet nut, lower semisection are one with externally threaded spike body, for being implanted into lesion centrum, and are followed closely The upper semisection of body is set as bulb type, external spring type and suspension type rivet nut according to different clinical requirements.

6. the bulb type rivet nut in the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 5, it is characterised in that: Its upper semisection is an orbicule, is matched with the incomplete sphere in the inner cavity of the nail seat, and can put around its centre of sphere Dynamic, orbicule upward, processes a plane vertical with rivet nut axis, and the center of plane has one for the recessed of driver Slot.

7. the external spring type rivet nut in the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 5, feature Be: its upper semisection is one section of cylindrical spring, and one end of this cylindrical spring merges with the matching of the groove of the lower semisection end face of rivet nut It is fixedly connected, and the other end of cylindrical spring, it is placed in the under shed of the nail seat and makees permanent connection.

8. the suspension type rivet nut in the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 5, it is characterised in that: Its upper semisection be an orbicule, cross its centre of sphere and with rivet nut axis vertical direction, be equipped with symmetrical two blind holes, this is to blind Hole is just suspended on from the corresponding position of the nail seat, and inside stretched out a pair of pin nails on, and can put around this pin It is dynamic.

9. the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 1, it is characterised in that: the control spiral shell Nail reaches realization to the adjustable gradual of the pedicle nail disclosed in the present patent application by one group of auxiliary small part The clinical technology effect of flexible constraint power.

10. the dual-purpose pedicle nail of undercut mark of anti-explosion filaments according to claim 9, it is characterised in that: described one group is auxiliary Small part is helped, is made of control block, spring and briquetting, the control block is a flat cylindrical body, and the spring is Line-spacing is slightly larger than the cylindricality pressure spring of line footpath, control block and spring be placed in the plug screw into following shrinkage pool, it is described Briquetting be a circular cylindrical, to it is following be an incomplete spherical surface, the spherical mates with the rivet nut.