CN2598519Y - Intenral fixed device for vertebral arch pedicle of vertebral column - Google Patents
Intenral fixed device for vertebral arch pedicle of vertebral column Download PDFInfo
- Publication number
- CN2598519Y CN2598519Y CNU032368372U CN03236837U CN2598519Y CN 2598519 Y CN2598519 Y CN 2598519Y CN U032368372 U CNU032368372 U CN U032368372U CN 03236837 U CN03236837 U CN 03236837U CN 2598519 Y CN2598519 Y CN 2598519Y
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- CN
- China
- Prior art keywords
- screw
- vertebral
- universal
- vertebral arch
- spinal column
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Prostheses (AREA)
Abstract
The utility model discloses an intenral fixed device for vertebral arch pedicle of vertebral column, and aims to provide an intenral fixed device for vertebral arch pedicle of vertebral column with simple surgery, and easily grasped installation, and the neck of a vertebra bolt with enough strength and bolt/rod locking strength, and with powerful combination between the vertebral bolt and the vertebra, and the satisfied requirement for the lower notch. The device comprises a plurality of vertebral bolts, connection rods, connection clipping blocks and locking screw plugs used to be screwed into the vertebra, wherein the vertebral bolts connected with the connecting clipping blocks are the universal bolts or the single-axis bolts. The hole arranged inside the connecting clipping blocks used for passing through the universal bolts which matches with the spheric head on the tail of the universal bolt hole forms a spheric surface. The utility model can be used to treat the fracture of thoracic-lumbar vertebra, spine tumor, and spine abnormality, as well as the thoracic-lumbar vertebra diseases that need surgical therapy and posterior spinal internal fixation.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates to the preceding road of a kind of spinal column inner fixing device specifically.
Background technology
Current, it is very general to be used for the treatment of lumbar vertebra compression fracture, tumor of spine, deformity of spine rectification and other various breast lumbar disc diseases of operative treatment and the preceding road of spinal column internal fixation that need, and traffic stud rod internal fixation is the very rational a kind of method of the above-mentioned disease of treatment before the spinal column, the preceding road of the spinal column that the is used for the treatment of above-mentioned disease inner fixation surgical instrument of now existing multiple domestic and international production, it mainly comprises the excellent internal fixation system of nail.This follows closely excellent internal fixation system stronger strutting and pressurization, and it is easy and simple to handle, but there is the higher deficiency of incisura (height that promptly exposes surface of bone) in present nail-stick system, and owing to all adopt uni-axial screws, after a vertebral body screw is installed wherein, can cause and connect the central axis in hole and the departing from of bone hole central axis that another root vertebral body screw is installed on the fixture block, cause fitting operation inconvenience even failure, moreover, the nail tail female thread of the vertebral body screw of the common profile of tooth of available technology adopting and regular screw threads exists vertebral body screw cervical region intensity little, defectives such as the adhesion of nail rod connection coupling mechanism force and vertebral body screw and vertebral body is low.
Technology contents
Main purpose of the present utility model is that the adhesion that provides a kind of vertebral body screw cervical region to have sufficient intensity, nail rod connection coupling mechanism force and vertebral body screw and vertebral body is high and operation technique that satisfied low incisura requires is easy, mounting technique is grasped easy spinal column pedicle of vertebral arch inner fixing device.
To achieve these goals, this utility model adopts following technical scheme:
A kind of spinal column pedicle of vertebral arch inner fixing device, comprise several cone screws that are used to be screwed into spinal vertebral, pitman, connection fixture block and locking plug screw, wherein, each cone screw that connects on the fixture block is meant universal screw and uni-axial screws, the universal screw here is meant and has universal structure, promptly follow closely the central axis within the specific limits free to rotate screw of excellent locking mechanism with respect to vertebral body screw nail bar, uni-axial screws then is meant the screw that does not have universal structure.
Wherein, connect and to be used for hole that universal screw passes and universal screw on the fixture block to follow closely the surface that the ballhead on the bar cooperates be spherical.Hole the first half is provided with the zigzag female thread that can cooperate with the external screw thread of locking plug screw.Described vertebral body screw nail bar solid section is all tapered, and major diameter of thread is then consistent.
Compared with prior art, the outstanding beneficial effect of this utility model is:
1, it is easy that operation technique is easy, mounting technique is grasped;
2, vertebral body screw cervical region has sufficient intensity;
3, the adhesion height of nail rod connection coupling mechanism force and vertebral body screw and vertebral body has low incisura;
Introduce this utility model in detail below in conjunction with description of drawings and specific implementation.
Description of drawings
Fig. 1 is a connection diagram of the present utility model;
Fig. 2 is the cutaway view of this utility model along the A-A direction;
Fig. 3 is the axial partial cutaway schematic of the locking plug screw of this utility model and universal screw fit.
Specific implementation
As shown in Figure 1 and Figure 2, the described a kind of spinal column pedicle of vertebral arch inner fixing device of this utility model embodiment comprises several universal screws 1 that are used to be screwed into spinal vertebral, uni-axial screws 2, pitman 3, connects fixture block 4 with the locking plug screw 5 that cooperates with universal screw 1 and be used to lock the locking plug screw 6 that is connected fixture block 4 and pitman 3.
Wherein, connecting and being used for the hole that universal screw 1 passes on the fixture block 4 is spherical with the surface that universal screw 1 tail end ballhead 7 cooperates, promptly relies on the hole of connection fixture block 4 and the ballhead 7 formation universal structures of universal screw 1, and this structure helps reducing incisura.
Hole the first half is provided with the zigzag female thread that can cooperate with the external screw thread of locking plug screw 5, to improve the coupling mechanism force of locking plug screw 5.
The nail bar solid section of described universal screw 1, uni-axial screws 2 is all tapered, and major diameter of thread is then consistent, and this kind structure can strengthen the intensity of vertebral body screw cervical region and the bond strength of vertebral body screw and sclerotin.Uni-axial screws B nail bar near caudal end part screw thread is that double thread and pitch are 1/2 of nail bar thread pitch.
Wherein be used for being provided with double thread in the hole that uni-axial screws 2 passes.As shown in Figure 3, locking plug screw 5 bottoms with universal screw fit are spherical.Spherical on this spherical and the ballhead 7 and being connected is used for the bottom surface, hole that universal screw 1 passes on the fixture block 4 can be provided with coarse structure, such as the toroid of many projections, to strengthen the engagement effect.
Universal screw 1, uni-axial screws 2 are connected by being connected fixture block 4 with pitman 3, these connection fixture block 4 one sides are the arc that adapts with vertebral body side radian, connect fixture block 4 fronts and have four holes, wherein two holes are used to pass the vertebral body screw, connect fixture block 4 sides two holes are arranged, one is through hole, and one is blind hole, and two pitmans 3 insert respectively thus.Wherein, universal screw 1 adopts the single thread structure.
When the preceding road of carrying out the single vertebral body pathological changes of breast lumbar vertebra resets internal fixation operation, select earlier 2 pitmans 3 of appropriate length, an end of pitman 3 is inserted the top connect in the hole of fixture block 4 sides, and insert locking screw plug 6 in advance but wouldn't tighten.To need fixed two vertebral bodys to strut to correct position with strutting pincers, two connection fixture blocks 4 that are inserted with pitman 3 are placed on the fixedly front side of vertebral body, be screwed into the universal screw 1 that has ballhead 7 then earlier and will connect on the surface of bone that fixture block 4 is pressed on the vertebral body side, be screwed into again and lock plug screw 5; Be screwed into uni-axial screws 2 afterwards, to correct position, tighten locking plug screw 6, promptly finished installation of the present utility model with strutting the suitable distances of adjusting two connection fixture blocks 4 of pincers or pressurized clamp.
In the foregoing description, the vertebral body screw can have plurality of specifications, does not wait from 6mm to 8.0mm length from 20mm to 60mm as diameter, applicable to various build patients' thoracic vertebra, the anterior approach internal fixation at lumbar vertebra position.
Claims (7)
1, a kind of spinal column pedicle of vertebral arch inner fixing device comprises cone screw, pitman, connection fixture block and locking plug screw, and it is characterized in that: the cone screw that is installed on this connection fixture block is meant universal screw and uni-axial screws.
2, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1 is characterized in that: being used for the surface that hole that universal screw passes cooperates with the ballhead of universal screw tail end in the described connection fixture block is spherical.
3, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 2 is characterized in that: the first half in described hole is provided with the zigzag female thread that can cooperate with the external screw thread of locking plug screw.
4, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1 is characterized in that: described cone screw nail bar solid section is all tapered, and the major diameter of thread unanimity.
5, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1 is characterized in that: the spherical of the lower surface of the locking plug screw of described and universal screw fit for cooperating with ballhead on the universal screw body.
6, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 5 is characterized in that: the ballhead surface on described locking plug screw lower surface and the universal screw nail bar is coarse structure.
7, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1 is characterized in that: the screw thread on the described universal screw nail bar is an one start screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032368372U CN2598519Y (en) | 2003-01-29 | 2003-01-29 | Intenral fixed device for vertebral arch pedicle of vertebral column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032368372U CN2598519Y (en) | 2003-01-29 | 2003-01-29 | Intenral fixed device for vertebral arch pedicle of vertebral column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2598519Y true CN2598519Y (en) | 2004-01-14 |
Family
ID=34167024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032368372U Expired - Fee Related CN2598519Y (en) | 2003-01-29 | 2003-01-29 | Intenral fixed device for vertebral arch pedicle of vertebral column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2598519Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133130B (en) * | 2010-01-21 | 2013-05-08 | 林士斌 | Rotating bone nail for orthopaedics |
| CN104398297A (en) * | 2014-12-27 | 2015-03-11 | 山东威高骨科材料股份有限公司 | Pedicle screw |
| CN110338894A (en) * | 2019-06-04 | 2019-10-18 | 迪恩医疗科技有限公司 | It can the fixed pedicle nail of double screws |
| CN113813033A (en) * | 2021-09-24 | 2021-12-21 | 浙江省立同德医院 | Angle-adjustable self-locking type lumbosacral anterior channel vertebral arch fixing nail plate fixing method and system |
-
2003
- 2003-01-29 CN CNU032368372U patent/CN2598519Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133130B (en) * | 2010-01-21 | 2013-05-08 | 林士斌 | Rotating bone nail for orthopaedics |
| CN104398297A (en) * | 2014-12-27 | 2015-03-11 | 山东威高骨科材料股份有限公司 | Pedicle screw |
| CN110338894A (en) * | 2019-06-04 | 2019-10-18 | 迪恩医疗科技有限公司 | It can the fixed pedicle nail of double screws |
| CN113813033A (en) * | 2021-09-24 | 2021-12-21 | 浙江省立同德医院 | Angle-adjustable self-locking type lumbosacral anterior channel vertebral arch fixing nail plate fixing method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |