CN203915049U - The novel dynamic pedicle screw that absorbs - Google Patents
The novel dynamic pedicle screw that absorbs Download PDFInfo
- Publication number
- CN203915049U CN203915049U CN201420213351.6U CN201420213351U CN203915049U CN 203915049 U CN203915049 U CN 203915049U CN 201420213351 U CN201420213351 U CN 201420213351U CN 203915049 U CN203915049 U CN 203915049U
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- China
- Prior art keywords
- screw
- bearing
- autotomying
- absorbs
- connecting portion
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Abstract
The novel dynamic pedicle screw that absorbs of this utility model relates to a kind of spinal column localizer or regulator being screwed, comprise screw, the jackscrew of autotomying, the plug screw of autotomying, Connection Block, the top of the described plug screw of autotomying is vertically arranged hollow body, the bearing that bottom is arranged horizontally, described screw is vertically through described main body and bearing, and be threaded with described main body and bearing, described Connection Block comprises the tabular connecting portion of tight lock part and right side in left side, the top of described tight lock part vertically offers locking through hole, lower horizontal offers connecting hole, on described connecting portion, offer jack, described screw inserts in described jack, described connecting portion and described bearing close contact.Its objective is for a kind of easy and simple to handle, screw good fixing effect being provided, can affect patient health by the disconnected rod of broken nail, and can alleviate the novel dynamic pedicle screw that absorbs that doctor perplexs.
Description
Technical field
This utility model relates to a kind of inner fixer technical field for synthetism, and for example blade plate, bone screw or analog, particularly relate to a kind of spinal column localizer or regulator being screwed.
Background technology
Spinal fracture is common clinical disease, resets, fixes these two basic principles very important in treatment.Reset is that the fracture site that displacement occurs after fracture is again recovered to normal or approaches original anatomy relationship, again to recover the support effect of skeleton.After the reduction of the fracture, because of unstable, easily generation is shifted again, therefore will adopt diverse ways to be fixed in satisfied position, and it is healed gradually.Pedicle of vertebral arch have transmission power to the place ahead epicentral function, and can control the motion of certain orientation, therefore, used clinically pedicle of vertebral arch that screw is screwed into vertebral body, can control the composite construction of spinal column whole " three posts ", reach good three-dimensional and fix.More common fractures method is in hindering the two vertebral body pedicles of vertebral arch up and down of vertebra, to inject screw to strut at present, make the corpus vertebrae replacement of its compression, adopt in this way, fixed performance is poor, and after fracture healing, need screw to take out as early as possible, otherwise easily there is the situations such as broken nail, disconnected rod, harm patient healthy, affect patients ' life quality, the while also brings very big puzzlement to doctor.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of easy and simple to handle, screw good fixing effect, can not be because the disconnected rod of broken nail affect patient health, and can alleviate the novel dynamic pedicle screw that absorbs that doctor perplexs.
The novel dynamic pedicle screw that absorbs of this utility model, comprise screw, the jackscrew of autotomying, the plug screw of autotomying, Connection Block, the top of the described plug screw of autotomying is vertically arranged hollow body, the bearing that bottom is arranged horizontally, described screw is vertically through described main body and bearing, and be threaded with described main body and bearing, described Connection Block comprises the tabular connecting portion of tight lock part and right side in left side, the top of described tight lock part vertically offers locking through hole, lower horizontal offers connecting hole, on described connecting portion, offer jack, described screw inserts in described jack, described connecting portion and described bearing close contact.
The novel dynamic pedicle screw that absorbs of this utility model coordinates by the jackscrew of autotomying, the plug screw of autotomying, Connection Block three, effectively limited that screw occurs radially, axial displacement, not only easy and simple to handle, and greatly improved the fixed effect of screw, screw is difficult for loosening.
As further improvement, the novel dynamic pedicle screw that absorbs of this utility model, the upper surface of wherein said connecting portion in described jack right side is provided with the first sawtooth portion of projection, the right side lower surface of described bearing is provided with depression, and the second sawtooth portion of coincideing with described the first sawtooth portion.The mutual sawtooth portion of interlock, the connection of make to autotomy plug screw and Connection Block is more firm, and the fixed effect of screw is better.
Preferably, described the first sawtooth portion and the second sawtooth portion all adopt almag to make, magnalium absorbable metal material has higher moment of torsion and torsional rigidity than common stainless steel material, reduced the distorting stress of shank of screw, strengthened the fixed effect of shank of screw, possess over a period to come good mechanical support performance, can degrade voluntarily afterwards.Along with vertebral body heals gradually, the alloy of sawtooth portion is also degraded and is absorbed gradually, fixing screw also starts to become flexible gradually, thereby can not stop the activity generation stress of healing spinal column, there will not be the broken nail excellent situation of breaking, greatly improved patients ' life quality, reduced the puzzlement in medical treatment later stage.
Preferably, the main body of plug screw of autotomying described in is hollow cylindrical.
Below in conjunction with accompanying drawing, the novel dynamic pedicle screw that absorbs of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is that the novel master who absorbs dynamic pedicle screw of this utility model looks partial sectional view;
Fig. 2 is that partial sectional view is looked on the novel right side that absorbs dynamic pedicle screw of this utility model;
Fig. 3 is the axonometric drawing of Connection Block in this utility model;
Fig. 4 is the another axonometric drawing of Connection Block in this utility model.
The specific embodiment
As shown in Figure 1, novelly absorb that dynamic pedicle screw comprises screw 4, the jackscrew 2 of autotomying, the plug screw 3 of autotomying, Connection Block 1, the autotomy top of plug screw 3 is vertically arranged hollow body 31, the shape of this main body 31 can be cylindric or other shapes, the inside of main body 31 is provided with female thread, the bearing 32 that the bottom of the plug screw 3 of autotomying is arranged horizontally, and screw 4 is provided with external screw thread, screw 4 is vertical through main body 31 and bearing 32, and is threaded with main body 31 and bearing 32.Again as shown in Figure 4, Connection Block 1 comprises the tabular connecting portion 12 of tight lock part 11 and right side in left side, again as shown in Figure 3, the top of tight lock part 11 offers locking through hole 111, and the below of locking through hole 111 offers the connecting hole 112 that runs through tight lock part 11 forward and backward surfaces.During use, tight lock part 11 is positioned at the left side of screw 4, the jackscrew 2 of autotomying is screwed in locking through hole 111, again pitman (not illustrating in figure) is inserted in connecting hole 112 along the direction vertical with screw 4, then regulate the jackscrew 2 of autotomying, it is moved, locking pitman (not illustrating in figure) to pitman (not illustrating in figure) direction.Again as shown in Figure 3, offer jack 121 on connecting portion 12, during use, screw 4 is vertical to be inserted in jack 121, connecting portion 12 and bearing 32 close contacts.Screw 4 and the plug screw 3 of autotomying are threaded and have limited the axial displacement of screw 4, jack 121 has limited the radial displacement of screw 4, add connecting portion 12 and the bearing 32 of close contact, above-mentioned each parts cooperatively interact, guaranteed the stability of screw 4, in addition, by use jackscrew 2 locking of autotomying, guaranteed that again pitman (not illustrating in figure) is difficult for loosening, made pedicle screw integral body obtain good fixed effect.In the present embodiment, pitman (not illustrating in figure) couples together two or more pedicle screws by inserting connecting hole 112, to reach therapeutic purposes, because pitman (not illustrating in figure) is the common equipment in the reduction of the fracture, locating therapy, its structure and using method are prior art, so locate not repeat.
Again in conjunction with shown in Fig. 2 to Fig. 3, the upper surface that is positioned at jack 121 right sides on connecting portion 12 is provided with the first sawtooth portion 122 of projection, the right side lower surface of bearing 32 is provided with the second sawtooth portion 321 of depression, this the first sawtooth portion 122 and the second sawtooth portion 321 match, mutually make the to autotomy connection of plug screw 3 and Connection Block 1 of identical sawtooth portion is more firm, has further improved the fixed effect of pedicle screw integral body.Preferably, the first sawtooth portion 122 and the second sawtooth portion 321 all adopt almag to make, in general, the healing time of fracture is 6-9 month, the degradation time of almag is 18-24 month, before alloy degraded, the first sawtooth portion 122 and the closely interlock always of the second sawtooth portion 321, guarantee the fixed effect of pedicle screw integral body, afterwards As time goes on, alloy is degraded gradually, absorb, the connection of plug screw 3 and Connection Block 1 of making to autotomy occurs loosening, the fixed performance of pedicle screw reduces greatly, screw 4 is easily loosening, thereby when patient is movable, screw 4 there will not be stress to stop phenomenon, screw 4 or pitman can not fractureed, therefore, greatly improved patient's quality of life, also avoided doctor's later maintenance work.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of this utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of this utility model claims.
Claims (4)
1. the novel dynamic pedicle screw that absorbs, it is characterized in that: comprise screw (4), the jackscrew (2) of autotomying, the plug screw (3) of autotomying, Connection Block (1), the top of the described plug screw of autotomying (3) is vertically arranged hollow body (31), the bearing that bottom is arranged horizontally (32), described screw (4) is vertically through described main body (31) and bearing (32), and be threaded with described main body (31) and bearing (32), described Connection Block (1) comprises the tabular connecting portion (12) of tight lock part (11) and right side in left side, the top of described tight lock part (11) vertically offers locking through hole (111), lower horizontal offers connecting hole (112), on described connecting portion (12), offer jack (121), described screw (4) inserts in described jack (121), described connecting portion (12) and described bearing (32) close contact.
2. the novel dynamic pedicle screw that absorbs according to claim 1, it is characterized in that: the upper surface that described connecting portion (12) is positioned at described jack (121) right side is provided with the first sawtooth portion (122) of projection, the right side lower surface of described bearing (32) is provided with the second sawtooth portion (321) depression and that coincide with described the first sawtooth portion (122).
3. the novel dynamic pedicle screw that absorbs according to claim 2, is characterized in that: described the first sawtooth portion (122) and the second sawtooth portion (321) all adopt almag to make.
4. the novel dynamic pedicle screw that absorbs according to claim 3, is characterized in that: described in the autotomy main body (31) of plug screw (3) be hollow cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213351.6U CN203915049U (en) | 2014-04-29 | 2014-04-29 | The novel dynamic pedicle screw that absorbs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213351.6U CN203915049U (en) | 2014-04-29 | 2014-04-29 | The novel dynamic pedicle screw that absorbs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203915049U true CN203915049U (en) | 2014-11-05 |
Family
ID=51810944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213351.6U Expired - Fee Related CN203915049U (en) | 2014-04-29 | 2014-04-29 | The novel dynamic pedicle screw that absorbs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203915049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111419369A (en) * | 2020-04-03 | 2020-07-17 | 董谢平 | Hinged pedicle screw with neutral bracing pressure and static-to-dynamic self-rotation-converted fixed state |
-
2014
- 2014-04-29 CN CN201420213351.6U patent/CN203915049U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111419369A (en) * | 2020-04-03 | 2020-07-17 | 董谢平 | Hinged pedicle screw with neutral bracing pressure and static-to-dynamic self-rotation-converted fixed state |
| CN111419369B (en) * | 2020-04-03 | 2024-04-12 | 董谢平 | Hinged pedicle screw capable of neutral bracing and self-conversion from static to dynamic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160429 |