CN201208297Y - Fixture device by pedicle of vertebral arch - Google Patents
Fixture device by pedicle of vertebral arch Download PDFInfo
- Publication number
- CN201208297Y CN201208297Y CNU2008200397730U CN200820039773U CN201208297Y CN 201208297 Y CN201208297 Y CN 201208297Y CN U2008200397730 U CNU2008200397730 U CN U2008200397730U CN 200820039773 U CN200820039773 U CN 200820039773U CN 201208297 Y CN201208297 Y CN 201208297Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pedicle
- titanium alloy
- cable
- vertebral arch
- Prior art date
- 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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Abstract
The utility model discloses a fixing device through vertebral arch pedicle, which comprises a hollow sleeve, cables, vertebral arch pedicle screws, locking nuts and a groove, wherein the cables are arranged inside the sleeve; the vertebral arch pedicle screws are arranged at both ends of the sleeve and fixed on the sleeve through the locking nuts; and the groove is formed on the outer surface of the sleeve. The utility model has the beneficial effects that the middle part of the titanium alloy sleeve is used as a hinge-type structure, so that a universal motion degree of the sleeve is guaranteed; and the existence of the cables ensure that the titanium alloy sleeve has enough strength and excessive deformation of the sleeve cylinder is prevented.
Description
Technical field
This utility model relates to the fixture of orthopaedics spinal column implant, particularly a kind of pedicle.
Background technology
The present sickness rate of lumbar degenerative disease is higher, is having a strong impact on people's quality of life.Traditional treatment means spinal fusion is the modus operandi commonly used of this disease of treatment, by using pedicle of lumbar vertebral arch screw and being used from body bone, homogeneous allogenic bone and artificial bone, fusion rate is very high, and patient's postoperative lesion segment can reach 90% strong fixing.Yet, thisly be known as therapeutic modality for goldstandard by the clinician, but exist certain limitation.
At first, though very perfect even if the clinician observes the position of sound production of postoperative patient pedicle screw, it is also very thorough to reduce pressure, and merges also very goodly, and the patient still complains the symptom that lumbago is arranged, and screw also has risk loosening, that withdraw from and rupture; In addition, behind lesion segment row fusion, the aggravation that increases relatively, loads of the LOM of this motion stage, two adjacent sections activities, As time goes on, the regression of adjacent segment more easily takes place.
The utility model content
For the defective that overcomes, the technical problems to be solved in the utility model is: the fixture that a kind of pedicle is provided.
The technical scheme that this utility model adopted is: a kind of pedicle fixture, comprise hollow sleeve, this sleeve inboard is provided with cable, and these telescopic two ends are provided with pedicle screw, with on this sleeve of this LOCATION OF PEDICLE SCREW FIXATION, described sleeve outer surface has groove by locking nut.
According to another one embodiment of the present utility model, the pedicle fixture further comprises described groove shape in the shape of a spiral.
According to another one embodiment of the present utility model, the pedicle fixture comprises that further described sleeve, cable are that titanium alloy material is made.
According to another one embodiment of the present utility model, the pedicle fixture comprises that further described cable fixes at described sleeve two ends.
According to another one embodiment of the present utility model, the pedicle fixture comprises that further described recess width is 0.1-0.5mm.
The beneficial effects of the utility model are: use the telescopic middle part of titanium alloy to make the hinge spline structure, make sleeve guarantee to have universal mobility, because the existence of cable guarantees that the titanium alloy sleeve has enough intensity, prevents the sleeve excessive deformation.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is the structural representation of this utility model preferred embodiment;
Fig. 2 is sleeve and cable two ends welding fixed structure sketch map;
Fig. 3 is sleeve and cable two ends roll extrusion fixed structure sketch map;
Fig. 4 is sleeve and cable two ends clamp fixed structure sketch map;
Fig. 5 is that sleeve and cable two ends screw clamp fasten structural representation;
Fig. 6 is that sleeve and cable two ends do not have the fixed structure sketch map;
Fig. 7 is sleeve and cable two ends cable outside self-locking structure sketch map;
Among the figure: 1. sleeve, 3. cable, 5. pedicle screw, 7. locking nut, 9. groove, 11. fixation clamps.
The specific embodiment
A kind of pedicle fixture as shown in Figure 1, comprise hollow sleeve 1, this sleeve 1 inboard is provided with cable 3, and the two ends of this sleeve 1 are provided with pedicle screw 5, by locking nut 7 this pedicle screw 5 is fixed on this sleeve 1, sleeve 1 outer surface has groove 9.Wherein, above-mentioned groove 9 is shape in the shape of a spiral, and sleeve 1 and the cable 3 preferred titanium alloy materials that adopt, thereby can guarantee that cable 3 has good elasticity, toughness, intensity, satisfying the 1 active while of sleeve also increases integrally-built intensity, carried the most spinal load of implants, limited the mistake of titanium alloy sleeve 1 and bent effect, effectively avoided titanium alloy sleeve 1 to meet the appearance that causes situations such as fatigue fracture because of too much stress.
Wherein, under titanium alloy sleeve 1 perfect condition, external diameter 5.5mm-7.0mm, inside is hollow form, internal diameter 1.0-3.0mm, titanium alloy sleeve 1 has different length according to different patients, part is the helical groove structure between the pedicle screw 5, groove 9 width are 0.1-0.5mm, be spaced apart 0.2-1.0mm between the groove 9, angle is 10 °-45 °, satisfies the length deformation range of length sleeve 1 at ± 2mm-± 5mm, the angle deformation range is 5 °-30 °, and sleeve 1 is chosen in compressive state and is fit to can play the effect that necessarily struts to this sections in the length implant.
The connected mode of cable 3 and sleeve 1 has following several, comprising:
As shown in Figure 2, the two ends of cable 3 adopt the fixed mode of welding to be connected with the two ends of sleeve 1, at the two ends of sleeve 1 pedicle screw 5 are installed then, by locking nut 7 this pedicle screw 5 are fixed on this sleeve 1.
As shown in Figure 3, use the roll extrusion technology, titanium alloy sleeve 1 and titanium alloy cable 3 are fixed at two ends, then handling sleeve 1 roll extrusion place outside face and sleeve 1 external diameter is consistent, pedicle screw 5 is installed at two ends after the processing of sleeve 1 then, by locking nut 7 this pedicle screw 5 is fixed on this sleeve 1.
As shown in Figure 4, titanium alloy cable 3 is exposed at titanium alloy sleeve 1 outer part to be clamped with fixation clamp 11, make it can not pass titanium alloy sleeve 1, at the two ends of sleeve 1 pedicle screw 5 is installed then, this pedicle screw 5 is fixed on this sleeve 1 by locking nut 7.
As shown in Figure 5, titanium alloy cable 3 is exposed at titanium alloy sleeve 1 outer part two ends to be fixed with the structure of bolt, nut, its two ends are expanded can not detach titanium alloy outer sleeve 1, at the two ends of sleeve 1 pedicle screw 5 is installed then, this pedicle screw 5 is fixed on this sleeve 1 by locking nut 7.
As shown in Figure 6, titanium alloy cable 3 two ends exceed titanium alloy sleeve 1 two ends, exceed part and directly are placed on the pedicle screw 5, directly titanium alloy cable 3 and pedicle screw 5 are fixed together with lock-screw 7 then.
As shown in Figure 7, the prolongation of titanium alloy cable 3 two ends is fixed on titanium alloy sleeve 1 outside in the outside by cartridge device, at the two ends of sleeve 1 pedicle screw 5 is installed then, by locking nut 7 this pedicle screw 5 is fixed on this sleeve 1.
Adopt aforesaid way connect not only can sleeve 1 diameter specifications and existing pedicle screw 5 can be used; And being used of titanium alloy sleeve 1 and cable 3, both satisfied sleeve 1 elasticity activity, satisfied restriction again to sleeve 1 angle, prevent spinal column stage over-activity; Sleeve 1 is made with the length of cable 3 is alternative in addition, satisfies different patients' needs.
Claims (5)
1, a kind of pedicle fixture, comprise hollow sleeve (1), this sleeve (1) inboard is provided with cable (3), the two ends of this sleeve (1) are provided with pedicle screw (5), by locking nut (7) this pedicle screw (5) is fixed on this sleeve (1), be it is characterized in that: described sleeve (1) outer surface has groove (9).
2, pedicle fixture as claimed in claim 1 is characterized in that: described groove (9) is shape in the shape of a spiral.
3, pedicle fixture as claimed in claim 1 is characterized in that: described sleeve (1), cable (3) are made for titanium alloy material.
4, pedicle fixture as claimed in claim 1 is characterized in that: described cable (3) is fixed at described sleeve (1) two ends.
5, pedicle fixture as claimed in claim 1 is characterized in that: described groove (9) width is 0.1-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200397730U CN201208297Y (en) | 2008-06-27 | 2008-06-27 | Fixture device by pedicle of vertebral arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200397730U CN201208297Y (en) | 2008-06-27 | 2008-06-27 | Fixture device by pedicle of vertebral arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201208297Y true CN201208297Y (en) | 2009-03-18 |
Family
ID=40479021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200397730U Expired - Fee Related CN201208297Y (en) | 2008-06-27 | 2008-06-27 | Fixture device by pedicle of vertebral arch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201208297Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984926A (en) * | 2009-07-28 | 2011-03-16 | 斯班莱股份有限公司 | Spinal implant |
| CN104306056A (en) * | 2014-07-07 | 2015-01-28 | 吴爱悯 | Jumping type spine dynamic fixing device |
-
2008
- 2008-06-27 CN CNU2008200397730U patent/CN201208297Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984926A (en) * | 2009-07-28 | 2011-03-16 | 斯班莱股份有限公司 | Spinal implant |
| CN104306056A (en) * | 2014-07-07 | 2015-01-28 | 吴爱悯 | Jumping type spine dynamic fixing device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20160627 |