CN102499747A - Auxiliary apparatus for posterior minimally-invasive internal fixation operation for thoracic and lumbar vertebra fractures - Google Patents
Auxiliary apparatus for posterior minimally-invasive internal fixation operation for thoracic and lumbar vertebra fractures Download PDFInfo
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- CN102499747A CN102499747A CN2011104341548A CN201110434154A CN102499747A CN 102499747 A CN102499747 A CN 102499747A CN 2011104341548 A CN2011104341548 A CN 2011104341548A CN 201110434154 A CN201110434154 A CN 201110434154A CN 102499747 A CN102499747 A CN 102499747A
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Abstract
The invention relates to auxiliary apparatus for a posterior minimally-invasive internal fixation operation for thoracic and lumbar vertebra fractures. The auxiliary apparatus comprises two screws, a connecting rod a spreading device, wherein a screw tube is fixedly connected to the lower parts of the screws; a screw hole is formed in the screw tube; an open slot which penetrates through pipe walls on two sides and through which the connecting rod passes is formed on the screw tube; a bolt which is adaptive with the screw tube is connected with the interior of the screw tube; and the two screws are spread in the opposite direction under the action of the spreading device. The auxiliary apparatus brings convenience to operation, and saves the cost of operation.
Description
Technical field
The present invention relates to lumbar vertebra compression fracture way of escape Wicresoft internal fixation operation assistive device.
Background technology
The incidence rate of spinal fracture accounts for the 5%-6% of whole body fracture, and sees with lumbar vertebra compression fracture more.Spinal column breast waist section is the transfer point of the big lumbar vertebra of relatively-stationary thoracic vertebra and mobility, and the movable stress concentration of trunk is in this; Be being connected a little of the lumbar vertebra of the thoracic vertebra of physiology processus aboralis and physiology prolapse, shoulder back heavy burden stress concentration is in this; For the zygapophysial joints face by coronalplane to the dividing a word with a hyphen at the end of a line a little of sagittal plane, be subject to rotate the destruction of load.Because breast waist section has above-mentioned three characteristics on anatomical structure, this section spinal column intrinsic factor of damage have easily been constituted.The operation purpose of lumbar vertebra compression fracture is recovery and keeps the spinal column normal sequence, rebuilds spinal stability, on the basis of the reduction of the fracture, makes neural pipeline obtain effectively decompression, and keeps acquired decompression, prevents increasing the weight of of kyphosis deformity and nerve injury.The operation purpose of lumbar vertebra compression fracture is recovery and keeps the spinal column normal sequence, rebuilds spinal stability, on the basis of the reduction of the fracture, makes neural pipeline obtain effectively decompression, and keeps acquired decompression, prevents increasing the weight of of kyphosis deformity and nerve injury.Way of escape pedicle screw fixation art has been effective Therapeutic Method of generally acknowledging clinically.In traditional open surgery process; Extensively peeling off and tractive repeatedly for a long time of muscle, muscular fasciae and ligament; Cause postoperative muscle ischemic necrosis and fibrosis, thereby cause the stiff and pain of the secular intractable lower back of postoperative, caused scholars' extensive concern.The iatrogenic injury that how to reduce and alleviate in the thoracic and lumbar vertebral posterior operative process becomes a difficult problem that needs to be resolved hurrily clinically.
Along with modern spinal surgery continuous advancement in technology and development, some scholars attempt using Wicresoft's pedicle screw fixation technology treatment lumbar vertebra compression fracture to reduce operation wound, have obtained satisfied curative effect.This technology have otch little, go out insufficiency of blood, to advantages such as lumbodorsal muscle damage are little.At present, Wicresoft's pedicle screw fixation technology is all carried out in national most of areas.But under conventional apparatus, be difficult to carry out the operation of Wicresoft's pedicle screw fixation technology, operation needs assistive device to cooperate.The assistive device that uses clinically at present is main with foreign trader's design, like well-known CD HORIZONTM SETANTTM Wicresoft cervical arc root screw internal fixing system etc.But the hollow screw preparation technology of its use is high, all is external product at present, does not still have China's independent research product, needs complete dependence on import, and overall medical expense is higher.The shortcoming of this system is to lack pressurization and strutting tool in addition, therefore in fractures, strut and the effect of pressurizeing than routine operation difference.This has greatly influenced Wicresoft's pedicle screw fixation The Application of Technology and popularization.
Summary of the invention
The object of the invention solves existing lumbar vertebra compression fracture way of escape Wicresoft internal fixation operation assistive device exactly and lacks pressurization and strutting tool, in fractures, struts and the problem of the weak effect that pressurizes.
The technical scheme that the present invention adopts is: lumbar vertebra compression fracture way of escape Wicresoft internal fixation operation assistive device; It comprises and is used to be screwed into two screws of vertebra and the connecting rod that flexibly connects with two screws that the top of described screw is fixed with screwed pipe, is provided with screw in the screwed pipe; Screwed pipe is provided with and passes the open slot that the both sides tube wall is used to pass connecting rod; Be connected with the bolt adaptive in the screwed pipe, it is characterized in that it also comprises a device for spreading, struts two screws round about under the device for spreading effect with screwed pipe.
Above-mentioned device for spreading comprises dilator, positioning tube, cross bar and pressure bar device; Described positioning tube comprises diameter and suitable sleeve and the montant of screwed pipe; Montant vertically is connected on the sleeve wall; Described pressure bar device is two clampings rod of being hinged together of an end and be connected in a sleeve on the clamping rod, and montant is provided with the through hole that supplies cross bar to pass, and cross bar one end penetrates in the through hole of montant; The other end and connecting rod same side are clamped in the pressure bar device, and dilator is positioned on the cross bar montant moved along cross bar and struts.
Use for convenient, the montant end cross is fixed with handle.
Better move effect for reaching, the sleeve lower edge face of said positioning tube is connected with the projection of parcel screw and sleeve connecting portion.
In sum, beneficial effect of the present invention is: the present invention is provided with device for spreading makes the localized vertebra of two screws strut in external realization, has made things convenient for operation, has practiced thrift the operation cost.
Description of drawings
Fig. 1 is a sketch map of the present invention.
Fig. 2 is that screw cooperates sketch map with connecting rod.
Fig. 3 is the vertical view of Fig. 2.
Among the figure, 1, vertebra, 2, screw, 3, convexity, 4, connecting rod, 5, sleeve, 6, cross bar, 7, montant, 8, handle, 9, dilator, 10, the pressure bar device, 11, screwed pipe, 12, bolt, 13, fixed card.
The specific embodiment
As shown in Figure 1; Lumbar vertebra compression fracture way of escape Wicresoft internal fixation operation assistive device, it comprises and is used to be screwed into two screws 2 of vertebra 1 and the connecting rod 4 that flexibly connects with two screws 2 that screw 2 is like Fig. 2, shown in Figure 3; Its top is fixed with screwed pipe 11; Be provided with screw in the screwed pipe 11, screwed pipe 11 is provided with and passes the open slot that the both sides tube wall is used to pass connecting rod 4, is connected with the bolt 12 adaptive with screwed pipe in the screwed pipe 11; It also comprises a device for spreading, and two screws 2 are strutted under the device for spreading effect round about.
Device for spreading comprises dilator 9, positioning tube, cross bar 6 and pressure bar device 10; Positioning tube comprises the sleeve 5 and montant 7 that diameter and screwed pipe 11 are suitable; Montant 7 vertically is connected on sleeve 5 walls; Pressure bar device 10 is two clampings rod of being hinged together of an end and be connected in a sleeve on the clamping rod, and montant 7 is provided with the through hole that supplies cross bar 6 to pass, and cross bar 6 one ends penetrate in the through hole of montant 7; The other end and connecting rod 4 same side are clamped in the pressure bar device 10, and dilator 9 is positioned on the cross bar 6 montant 7 moved along cross bar 6 and struts.Montant 7 end cross are fixed with handle 8.The sleeve 5 lower edge faces of positioning tube are connected with the projection 3 of parcel screw and sleeve connecting portion.For making things convenient for dilator 9 on cross bar 6, to find impetus, be fixed with fixed card 13 near the middle part of cross bar 6, during use, a foot of dilator 9 is squeezed on the fixed card 13, can conveniently strut.
The present invention makes two screws that are screwed into vertebra can realize freely strutting through device for spreading, greatly facilitates operation, has practiced thrift the operation cost.
Claims (4)
1. lumbar vertebra compression fracture way of escape Wicresoft internal fixation operation assistive device; It comprises two screws [2] that are used to be screwed into vertebra [1] and the connecting rod [4] that flexibly connects with two screws [2]; The top of described screw [2] is fixed with screwed pipe [11]; Screwed pipe is provided with screw in [11], and screwed pipe [11] is provided with and passes the open slot that the both sides tube wall is used to pass connecting rod [4], is connected with the bolt adaptive with screwed pipe [12] in the screwed pipe [11]; It is characterized in that it also comprises a device for spreading, two screws [2] are strutted under the device for spreading effect round about.
2. the lumbar vertebra compression fracture way of escape according to claim 1 Wicresoft internal fixation operation assistive device; It is characterized in that described device for spreading comprises dilator [9], positioning tube, cross bar [6] and pressure bar device [10]; Described positioning tube comprises diameter and suitable sleeve [5] and the montant [7] of screwed pipe [11]; Montant [7] vertically is connected on sleeve [5] wall; Described pressure bar device [10] is two clampings rod of being hinged together of an end and be connected in a sleeve on the clamping rod, and montant [7] is provided with the through hole that supplies cross bar [6] to pass, and cross bar [6] one ends penetrate in the through hole of montant [7]; The other end and connecting rod [4] same side is clamped in the pressure bar device [10], and dilator [9] is positioned at cross bar [6] and upward montant [7] is strutted along cross bar [6] is mobile.
3. the lumbar vertebra compression fracture way of escape according to claim 2 Wicresoft internal fixation operation assistive device is characterized in that described montant [7] end cross is fixed with handle [8].
4. according to claim 2 or 3 described lumbar vertebra compression fracture way of escape Wicresoft internal fixation operation assistive devices, it is characterized in that the sleeve lower edge face of said positioning tube is connected with the projection [3] of parcel screw and sleeve connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104341548A CN102499747A (en) | 2011-12-22 | 2011-12-22 | Auxiliary apparatus for posterior minimally-invasive internal fixation operation for thoracic and lumbar vertebra fractures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104341548A CN102499747A (en) | 2011-12-22 | 2011-12-22 | Auxiliary apparatus for posterior minimally-invasive internal fixation operation for thoracic and lumbar vertebra fractures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102499747A true CN102499747A (en) | 2012-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104341548A Pending CN102499747A (en) | 2011-12-22 | 2011-12-22 | Auxiliary apparatus for posterior minimally-invasive internal fixation operation for thoracic and lumbar vertebra fractures |
Country Status (1)
| Country | Link |
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| CN (1) | CN102499747A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9907582B1 (en) | 2011-04-25 | 2018-03-06 | Nuvasive, Inc. | Minimally invasive spinal fixation system and related methods |
-
2011
- 2011-12-22 CN CN2011104341548A patent/CN102499747A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9907582B1 (en) | 2011-04-25 | 2018-03-06 | Nuvasive, Inc. | Minimally invasive spinal fixation system and related methods |
| US10716600B1 (en) | 2011-04-25 | 2020-07-21 | Nuvasive, Inc. | Minimally invasive spinal fixation system |
| US11596453B2 (en) | 2011-04-25 | 2023-03-07 | Nuvasive, Inc. | Minimally invasive spinal fixation system |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |