CN101612057A - A kind of pedicle fixture - Google Patents
A kind of pedicle fixture Download PDFInfo
- Publication number
- CN101612057A CN101612057A CN200810124360A CN200810124360A CN101612057A CN 101612057 A CN101612057 A CN 101612057A CN 200810124360 A CN200810124360 A CN 200810124360A CN 200810124360 A CN200810124360 A CN 200810124360A CN 101612057 A CN101612057 A CN 101612057A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pedicle
- cable
- titanium alloy
- fixture
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
- A61B17/7029—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form the entire longitudinal element being flexible
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention has disclosed 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.The invention has the beneficial effects as follows: 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
Technical field
The present invention 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.
Summary of the invention
For the defective that overcomes, the technical problem to be solved in the present invention is: the fixture that a kind of pedicle is provided.
The technical solution adopted in the present invention 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 preferred embodiment, the pedicle fixture further comprises described groove shape in the shape of a spiral.
According to another preferred embodiment, the pedicle fixture comprises that further described sleeve, cable are that titanium alloy material is made.
According to another preferred embodiment, the pedicle fixture comprises that further described cable fixes at described sleeve two ends.
According to another preferred embodiment, the pedicle fixture comprises that further described recess width is 0.1-0.5mm.
The invention has the beneficial effects as follows: 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
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the preferred embodiment of the present invention;
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 |
|---|---|---|---|
| CN200810124360A CN101612057A (en) | 2008-06-27 | 2008-06-27 | A kind of pedicle fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810124360A CN101612057A (en) | 2008-06-27 | 2008-06-27 | A kind of pedicle fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101612057A true CN101612057A (en) | 2009-12-30 |
Family
ID=41492075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810124360A Pending CN101612057A (en) | 2008-06-27 | 2008-06-27 | A kind of pedicle fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101612057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848597A (en) * | 2013-11-22 | 2016-08-10 | 脊柱平衡股份有限公司 | Poly-axial pedicle screw assembly and packaging therefor |
-
2008
- 2008-06-27 CN CN200810124360A patent/CN101612057A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848597A (en) * | 2013-11-22 | 2016-08-10 | 脊柱平衡股份有限公司 | Poly-axial pedicle screw assembly and packaging therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9532822B2 (en) | Pedicle screw with reverse spiral cut and methods thereof | |
| AU2004318974B2 (en) | Device for dynamic bone stabilization | |
| US20180325570A1 (en) | Implants for tissue fixation and fusion | |
| US20120184993A1 (en) | Expandable facet screw | |
| WO2011106339A1 (en) | Polyaxial bone screw assembly | |
| US20210353333A1 (en) | Integral double rod spinal construct | |
| WO2014090114A1 (en) | Pedicle screw and anterior thoracic/lumbar vertebral internal fixation system | |
| TWM456793U (en) | Coil rod member for linking with spine connecting device | |
| CN201208297Y (en) | Fixture device by pedicle of vertebral arch | |
| US20220330993A1 (en) | Improved cortico-cancello-cortical screw | |
| CN101612057A (en) | A kind of pedicle fixture | |
| US11000326B1 (en) | Orthopedic fastener and associated systems and methods | |
| CN204072293U (en) | A kind of cervical vertebra vertebra inner fixing device | |
| WO2012167729A1 (en) | Torsion-measurable combination-type compression locking device for joint fracture | |
| JP2011234924A (en) | Instrument for atlantoaxial fixation | |
| CN209474775U (en) | One kind can micro-movement vertebral arch pedicle nail | |
| CN210408576U (en) | Anterior cervical internal fixation system | |
| CN211325517U (en) | Fracture adjusting and resetting device | |
| CN201542728U (en) | Posterior atlantoaxial non-fusion internal fixation device | |
| CN201481537U (en) | Pedicle screw-rod connector | |
| CN208274609U (en) | A kind of variable diameter spinous process fusion Interal fixation system | |
| CN205903296U (en) | Basin damage is with internal fixation device that resets at bottom of waist | |
| CN205569048U (en) | Novel fixed adjustable angle connective bar is split in lumbar vertebrae vertebral arch gorge portion | |
| CN202654210U (en) | Dynamic reconstruction device for lumbar vertebra isthmus | |
| CN202365902U (en) | Lock-mounted axial infusion internal fixator for lumbosacral vertebrae |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091230 |