CN110141346A

CN110141346A - A kind of fixed pedicle nail of the dynamic of anti-explosion filaments

Info

Publication number: CN110141346A
Application number: CN201910494051.7A
Authority: CN
Inventors: 何静; 何伟义
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-08
Filing date: 2019-06-08
Publication date: 2019-08-20

Abstract

The present application relates to a kind of applied to the implantation material arrived used in Orthopeadic Surgery and neurosurgery, particularly as the fixed pedicle nail of dynamic for being a kind of anti-explosion filaments being laid out using side bar type；This pedicle nail with " non-fused fixation " function uses the structure type that pitman is placed on to nail seat side, it can fundamentally solve as the pedicle nail of " quick-fried silk " problem for suffering from many years, and there is lower incisura, and switching to " dynamic is followed closely " with " fixing glue " two kinds of forms can be realized by one of selection simple part, 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.

Description

A kind of fixed pedicle nail of the dynamic 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 that one kind meets " on-fixed fusion " theory, it is solid using the undercut mark dynamic that can effectively prevent quick-fried silk of side bar type layout Fixed pattern pedicle nail.

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 this two type, 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 is just Clinically add the difficulty of stock；

Moreover, the nail of these two types of types is essentially all to be provided with U-shaped right above the axial line of nail seat on traditional method Be open through slot, and the opening of this opening through slot is additionally provided with the internal screw thread matched with plug screw, plug screw is needed through enough compressings Pitman is fixed in opening through slot by power, but this is simultaneously, and plug screw can also generate certain component, by two sides of the through slot that is open to It struts outside, plug screw is be easy to cause to return pine；Although using new technique in recent years, i.e., the thread form of plug screw is arranged to negative angle, with to the greatest extent Amount reduces the cross component force that plug screw generates, but fails fundamentally to solve this problem, and plug screw, which returns pine, to be caused pitman to fall off etc. to draw The malpractice of the operative failure risen, happens occasionally；

Again due to the component compositing characteristic of this class formation, incisura, (term in art circle generally can approximatively be thought, exactly follow closely The height of seat) generally between 16 ~ 19mm, it may be assumed that incisura is higher, increases pain that implantation material generates muscular irritation etc. no It is suitable；

Further, since one of program is to need to strut adjacent pedicle nail during operation, it is then filled with CAGE, then clamp, finally just pitman is locked with plug screw；This is then easy to carry out in the uniaxial nail belonged in " fixing glue ", But the characteristics of due to scene operation and human spine, clamping tool can only be acted in nail seat, and the nail tail of " dynamic is followed closely " is in nail Seat, can swing relatively, in clamping process, influenced by CAGE, and tail is more difficult accomplishes to keep the plumbness to nail seat for nail, tie Fruit is the performance for affecting 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, reduction " incisura " as far as possible, And it being 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 is to face Problem in the urgent need to address on bed.

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 The rigging position taken over the baton is arranged to " side-mounted ", i.e., the pitman for occupying incisura is set to the side of nail seat, rather than as passing The way of system is set to the centre above the axis of nail seat, this is just to reduce incisura and vacateed comparable space.

Also, since pitman is placed in side, nail seat with plug screw composition screw thread pair then can " U-shaped be opened by traditional Mouth slot " structure, improves to become and encircles shape, this just fundamentally solves the relatively weak opening through slot of structure by the lateral of plug screw Outer 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 nail seat, the upper half, outer surface have the taper matched with the inner wall of hook frame, and inner cavity is It is machined with the internal screw thread matched with the plug screw；Its lower half, outer surface are the cylinder with rounded corner, and in its outer surface The groove of stick of being clamped and connected is assisted equipped with one in side, and inner cavity is equipped with hemispherical under shed to lower end.

Still further, the plug screw, there are internal and external threads, the head in rivet nut made to control with acting on respectively Internal screw thread in the inner cavity of control screw and the nail seat matches；The outwardly extending flat upper cover in plug screw top, wherein There is groove for driver in centre, the hook frame being socketed in nail seat can be compressed, plug screw in the following, processing in one Recessed inner cavity.

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, the folder stick groove on the outside of nail seat that this notch exposes, together with pressure bar arm On U-lag, common clamping and the fixed pitman.

Still further, the pitman continues to use the general part that conventional vertebral pedicle nails on as soon as being cylindrical bar, with 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, out of, the under shed of the nail seat stretches out and be implanted into patient centrum；And the upper semisection of rivet nut, i.e. head, it is in one Orbicule, and it is equipped with a plane perpendicular to tail portion axis, plane central has the blind hole matched with driver, this blind hole Interior, there are one half round pools.

Still further, the control screw, main body is a screw, and top is equipped with the socket for driver, under Side extend a hemispherical projection, can according to the needs of user clinically, in entire surgical procedure, select merging with It is no, to realize that pedicle nail switches in " dynamic is followed closely " and the reversible in working condition in " fixing glue " two.

Beneficial effect

The beneficial effect of the present patent application is exactly fundamentally to solve " quick-fried silk " problem for perplexing clinical many years；Also it is simultaneously It reduces " incisura " and provides enough spaces；In addition, the switching of two states can be also realized, so that clinically, it is only necessary to match Standby a nail, can meet the stock problem of clinically " mashed up "；And since such switching can be carried out at any time, it is more advantageous to In operation, nail is carried out the operation of " clamping " and " loosening " by adjustment, 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 decomposition explosion effect picture of the present patent application；

Fig. 3 is the switching schematic diagram of the two states of the present patent application；

Fig. 4 is the schematic illustration that the present patent application can solve " quick-fried silk " Yu " incisura "；

Fig. 5 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；

(tool -- clamper G；)

Plug screw external screw thread 11；Plug screw inner bolt hole 12；Plug screw upper cover 13；Plug screw lower end concave surface 14；

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

Rivet nut head 41；Rivet nut tail portion 42；Half round pool 43 in bulb；

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；

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 4 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. 4, 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 5, why dynamic nail generates the function of " On Fluctuations promote fusion ", it is necessary to after the completion of operation, Rivet nut tail portion 42 can still be made certain together with the centrum being implanted into relative to the pitman 3 and nail seat 5 being integrally fixed Positive negative direction swing, shown in the nail on the left of Fig. 5；And due in the course of surgery, not yet locking the plug screw 1 When, it is necessary to clamping device G to be used, first struts adjacent nail, merging is referred to as the supporter (shown in the Z among Fig. 5) 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 Fig. 5 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 explains solution below It releases:

It can be seen that the upper half 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 is matched with the inner wall 21 of the hook frame 2 with tapered；Inner cavity is the cavity for being provided with internal screw thread 52, with The external screw thread 11 of the plug screw 1 matches, and the hook frame 2 being placed in nail seat 5 is locked and fixed to realize；Then, Screw thread pair since the structure type of traditional U-shaped opening slot is cancelled, with the cooperation of plug screw 1, so that it may it is made into and encircles shape, without It is traditional opening U-lag formula, this just fundamentally solves " quick-fried silk " phenomenon；Moreover, external screw thread 11 and nail seat internal screw thread 52 Composed screw thread pair need not also use the biggish negative reverse angle threads of difficulty of processing, and can be easy to using processing common It is triangular tooth-shaped, processing charges is significantly reduced, in this R&D process, uses the general common spiral shell of M8 ~ M10 triangular tooth Line can reach ideal locking effect；

The hook frame 2 is a hollow tubular body, to be provided with one convenient for carrying out the fixation to pitman 4 jointly Notch 22, this notch precisely expose the folder stick groove 53 of the nail seat in the nail seat 5, in the corresponding top of hook frame notch 22, outward Extending a pressure bar arm 23, the inner wall 21 with taper can be accurately overlapped with the axis of nail seat 5 joined together, thus It is accurately positioned and combines the downwardly open pressure bar slot 24 and nail seat folder stick slot 53 of pressure bar arm 23, common implementing is to pitman 3 Locking；In this R&D process, set taper is 10 degree, can achieve the purpose that intrinsic precise positioning；

The plug screw 1 is a screw, and center is equipped with one and the inner bolt hole 12 for being referred to as control screw 6 and matching, The top of plug screw 1 extends outward a plug screw upper cover 13, and center is equipped with a slot for driver, uses tool, benefit With plug screw upper cover 13, hook frame 2 is compressed, to lock pitman 3；And the control screw 6, in this R&D process, setting It is the screw of M4, and processes a hemispherical protrusion to lower end surface at it；

The rivet nut bulb 41 is constrained on the lower end of the nail seat inner cavity, and swingable angle is limited by the nail seat The 5 lower diameter to opening 54, and can be according to the requirements of different academic schools clinically and the rivet nut 4 joined together used 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 is in the cambered surface of half of circumference, adjusts automatically or slightly, It can be formed by each other axial line coincidence, followed closely when screwing in the plug screw 1 with the cambered surface on the folder stick groove 53 in nail seat After seat inner wall 21 and locking, plug screw upper cover 13 oppresses hook frame 2, so that the two cambered surfaces are jointly right with pressure bar slot 24 for folder stick groove 53 The circumference of pitman 3 makees about 250 ° of containing, it is sufficient to be constrained and be locked, so that plug screw 1, hook frame 2, pitman 3 and nail Seat 5 is linked into an entirety, and rivet nut bulb 41, then can make the swing of certain angle in the inner cavity of nail seat 5, around its centre of sphere, this It under state, is presented, is exactly the function of " dynamic is followed closely ".

It may find out from the X-Y scheme of Fig. 1 in conjunction with effect picture shown in the left side Fig. 3: the bulb 41 of rivet nut, by nail seat The constraint of downwardly open 54 and plug screw lower end concave surface 14, due to mutual with being combined into clearance fit, so rivet nut 4 can around its from Body centre of sphere O makees taper swing；And after merging controls screw 6, hemispherical protrusion on lower end surface can be accurate and effectively Ground bears against half round pool 43 in bulb, causes rivet nut 4 that can not swing, and this completes from " dynamic is followed closely " to both " fixing glue " Switching；And this switching is reversible, it is only necessary to which control screw 6, this state, such as the X-Y scheme of attached drawing 1 are removed in merging Shown in the right side of the effect picture on the right side and attached drawing 3 of center line.

In conclusion the technical solution that the present patent application is proposed, is able to solve and perplexs the " explosive of clinical boundary's many years at present The technical problems such as silk ", " incisura high ", " stock is tired " and " hardly possible locking ", and the crucial core technology measure used, i.e. " side Stick ", it is creative；It is conceived, great novelty；In clinical effectiveness, more high practicability；Moreover, above-described embodiment is The present patent application preferred embodiment, and the other embodiments of exhaustive the present patent application, therefore, as long as with the present patent application The description and the appended drawings content made by any modifications, equivalent replacements, and improvements etc., should be included in the protection of the present patent application Within the scope of.

Claims

1. a kind of fixed pedicle nail of the dynamic 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 control screw passes through the inner bolt hole in the plug screw center, goes to realize the about pencil between the rivet nut and nail seat State, to reach the switching of reversible " dynamic is followed closely " and " fixing glue ".

2. the fixed pedicle nail of the dynamic 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 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, plug screw it is downward Face is equipped with concave hole.

3. the fixed pedicle nail of the dynamic 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 fixed pedicle nail of the dynamic of anti-explosion filaments according to claim 1, it is characterised in that: the nail seat, thereon Half portion, outer surface band is tapered, and inner cavity is equipped with internal screw thread；Its lower half, the side of outer surface are clamped and connected equipped with an assistance The groove of stick, inner cavity to lower end, be equipped with imperfect hemispherical cavity and downwardly open.

5. according to claim 3 and hook frame as claimed in claim 4 and nail seat, it is characterised in that: by between hook frame and nail seat The contact surface with taper positioning, the downwardly open U-lag of the pressure bar arm on hook frame, the groove with nail seat outer surface, two The cambered surface of person is formed by axis coincidence, for clamping and fixing the pitman jointly.

6. the fixed pedicle nail of the dynamic of anti-explosion filaments according to claim 1, it is characterised in that: the pitman is One cylindric barred body for connecting and fixing adjacent pedicle nail, and can make bending adjustment in clinical sites.

7. the fixed pedicle nail of the dynamic of anti-explosion filaments according to claim 1, it is characterised in that: the rivet nut it is upper Half portion is an orbicule, and is equipped with the plane perpendicular to its axis, and plane central is equipped with the blind hole for driver, blind via bottom Equipped with a hemispherical shrinkage pool；Lower semisection is one with externally threaded spike body, for being implanted into lesion centrum.

8. the fixed pedicle nail of the dynamic of anti-explosion filaments according to claim 1, it is characterised in that: the control screw Main body be a screw, top be equipped with for driver socket, extend a hemispherical projection below；It can be according to using The clinical of person needs, whether entire surgical procedure, selection merging, to realize the reversible function switch of pedicle nail.