CN2681691Y - Centrum reductor by way of intervertebral space - Google Patents
Centrum reductor by way of intervertebral space Download PDFInfo
- Publication number
- CN2681691Y CN2681691Y CN 200420043424 CN200420043424U CN2681691Y CN 2681691 Y CN2681691 Y CN 2681691Y CN 200420043424 CN200420043424 CN 200420043424 CN 200420043424 U CN200420043424 U CN 200420043424U CN 2681691 Y CN2681691 Y CN 2681691Y
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- CN
- China
- Prior art keywords
- handle
- arm
- intervertebral space
- hollow handle
- vertebral body
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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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- Surgical Instruments (AREA)
Abstract
The utility model discloses a centrum reductor by way of intervertebral space, comprising a cylindrical hollow handle, a lifting handle, and a clip handle. The side of the front end of the cylindrical hollow handle is provided with a hinge base; the inner wall of the back end of the cylindrical hollow handle is provided with a screw thread. The clip handle is hinged on the hinge base; the lifting handle is penetrated in the hollow handle; the handle body of the back section of the lifting handle is connected with the screw thread of the inner wall of the back end of the hollow handle; the front rod of the lifting handle and the expanding arm of the clip handle are positioned side by side; the outside of the top of the front rod and the expanding arm is respectively provided with saw teeth which are opposite in direction. The utility model can not only completely avoid the disadvantages of the dependence of vertebral arch screws, the loosing of the screws which is caused by the dependence of the vertebral arch screws, incomplete reduction, etc, in the reduction. Meanwhile, due to perfection reduction, complications are reduced, such as the poor stress, the loosing action of internal fixation devices which is caused by the poor stress, the losing of the reduction, etc.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, especially relate to a kind of be used for the lumbar spondylolisthesis reattachment surgery through intervertebral space vertebral body positor.
Background technology
Lumbar spondylolisthesis is crowd's commonly encountered diseases kind, and sickness rate is 5%.Malpractice, the disability rate height.Lumbar spondylolisthesis pathogenesis complexity, it is various to classify.But its Pathophysiology basically identical, be suffer from vertebra joint upper vertebral body with respect to the slippage downwards forward of the next vertebral body, cause intervertebral space to lose, centrum olisthe, lumbar vertebra sagittal plain deformity and cause pathological change such as nervous lesion thus.For the serious lumbar spondylolisthesis more than the II degree, the clinical operative treatment that trends towards.Operation is by open reduction, and intervertebral fusion and internal fixation treatment reach corrects deformity, recovers the purpose of function of nervous system.Repositioning method at present commonly used is to strut the gap that subsides by strutting and lift pedicle screws, reaching, promote the slippage vertebral body then and finish the purpose that resets.Reset and the fixed function of this method realize that by the pedicle screws fixed system apparatus and reduction instrument combine together.Shortcoming through the pedicle screws reduced method is the arm of force weak point that resets, and reset force is transmitted to vertebral body by acting on pedicle screw, is that a kind of lifting indirectly resets on the mechanical mechanism.Strut masterpiece simultaneously and be used for the spinal column rear pillar, be transmitted to front pillar by pedicle screw, strut weak effect, it is not good to reset in advance.Therefore usually exist in the art imperfection that resets, by force reset cause screw loosening, postoperative pedicle screws around sclerotin bear immense pressure, the secondary osteonecrosis causes resetting and shortcoming such as loses.
The utility model content
The purpose of this utility model is to provide a kind of energy to improve to reset, to reduce operation easier, the loosening rate of pedicle screws and postoperative in the art of reducing reset Loss Rate through intervertebral space vertebral body positor.
The purpose of this utility model realizes by following technical measures: comprise cylindric hollow handle, lift handle and clamp holder, cylindric hollow handle front is provided with hinged seat, thereafter the end inwall is provided with screw thread, described clamp holder is articulated on the described hinged seat, the described handle that lifts is interspersed in the hollow handle, the back segment handle body that lifts handle is connected with the inner thread of hollow handle rear end, lift the preceding bar of handle and the arm that struts of clamp holder and be in position side by side, the top outer of described preceding bar respectively is provided with the opposite sawtooth of direction with the top outer that struts arm.During use, insert intervertebral space with lifting the preceding bar of handle and strutting arm, turn and lift handle, can make the preceding bar that lifts handle and strut and produce horizontal shift between the arm, when preceding bar is transferred to the correct position of dislocation vertebral body, the jig arm of closing up clamp holder makes to strut arm and strut, and makes the interface generation frictional force of sawtooth with the terminal plate of vertebral body at their tops by the effect of strutting; Oppositely turn again and lift handle, lift the dislocation vertebral body, finally reach and reset.
Be provided with screw rod between the jig arm of hollow handle described in the utility model and clamp holder, screw rod is provided with adjusting and locking struts the regulating part that arm struts size.
The rearward end of hollow handle described in the utility model is provided with grabs bar, handled easily.
The rear end that lifts handle described in the utility model is provided with stubborn bar, handled easily.
This utility model pedicle screws resetting technique of abandoning tradition fully on the theory that resets by contrast, has the following advantages: 1, strut with reseting procedure and directly carry out in the slippage gap, have and directly strut the spinal column front pillar, strut fully; 2, lift the slippage vertebral body and carry out at intervertebral space, the arm of force that resets is short, and the intensity that resets is big; 3, to the dependence of pedicle screws and the screw loosening that causes thus, not congruent shortcoming resets in the time of not only can avoiding resetting fully; Simultaneously, reduced the loosening effect of bad stress of postoperative and consequent inner fixer, resetted and complication such as lose owing to reset perfectly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, present embodiment comprises cylindric hollow handle 1, lifts handle 2 and clamp holder 3, and cylindric hollow handle 1 front is provided with hinged seat 5, and the end inwall is provided with screw thread thereafter, and the rearward end of hollow handle is provided with handled easily and grabs bar 6.Clamp holder 3 is articulated on the hinged seat 5, lifting handle 2 is interspersed in the hollow handle 1, the back segment handle body that lifts handle 2 is connected with the inner thread of hollow handle 1 rear end, the rear end that lifts handle is provided with the stubborn bar 7 of handled easily, lift the preceding bar 8 of handle and the arm 9 that struts of clamp holder and be in position side by side, the top outer of preceding bar 8 respectively is provided with the opposite sawtooth of direction 10 with the top outer that struts arm 9.Jig arm 11 connecting screw rods 12 of hollow handle 1 and clamp holder 3, screw rod 12 are provided with adjusting and locking struts the adjusting nut 13 that arm struts size.The material of above-mentioned each parts adopts medical 316L rustless steel or titanium alloy.During use, insert intervertebral space with lifting the preceding bar of handle and strutting arm, turn and lift handle, can make the preceding bar that lifts handle and strut and produce horizontal shift between the arm, when preceding bar is transferred to the correct position of dislocation vertebral body, the jig arm of closing up clamp holder makes to strut arm and strut, and makes the interface generation frictional force of sawtooth with the terminal plate of vertebral body at their tops by the effect of strutting; Oppositely turn again and lift handle, lift the dislocation vertebral body, finally reach and reset.
Concrete operations are divided into two steps.The first step is for strutting the slippage gap.Insert intervertebral space with lifting the preceding bar of handle and strutting arm, the preceding bar that lifts handle during insertion is in upper, strut arm be in the next since the slippage gap up and down soleplate not at same position, therefore insert the back and lift handle by turning forward earlier, will be in upper preceding bar horizontal sliding to upper soleplate below; The jig arm of closing up clamp holder then makes to strut arm and strut intervertebral space, finishes in advance to reset.Strutting when reaching intervertebral space and having certain tension force, before bar and strut arm through the sawtooth at its top with after soleplate produces powerful frictional force up and down, beginning turns backward and lifts handle, by the powerful lifting force that screw thread rotation produces, makes that being in upper preceding bar drives upper vertebral body and lift backward together.The power that struts that struts arm is adjusted in attention in the process that lifts, keep it to the anchoring strength of soleplate up and down, prevents to strut the slippage of arm on soleplate.Reach the satisfied fixing dislocation in the back sections that resets.Can use two positors simultaneously at left and right sides intervertebral space in case of necessity, hocketing resets, to reach the purpose that fully resets.
Claims (4)
1, a kind of through intervertebral space vertebral body positor, it is characterized in that: comprise cylindric hollow handle, lift handle and clamp holder, cylindric hollow handle front is provided with hinged seat, thereafter the end inwall is provided with screw thread, described clamp holder is articulated on the described hinged seat, the described handle that lifts is interspersed in the hollow handle, the back segment handle body that lifts handle is connected with the inner thread of hollow handle rear end, lift the preceding bar of handle and the arm that struts of clamp holder and be in position side by side, the top outer of described preceding bar respectively is provided with the opposite sawtooth of direction with the top outer that struts arm.
2, according to claim 1 through intervertebral space vertebral body positor, it is characterized in that: be provided with screw rod between the jig arm of described hollow handle and clamp holder, screw rod is provided with adjusting and locking struts the regulating part that arm struts size.
3, according to claim 1 through intervertebral space vertebral body positor, it is characterized in that: the rearward end of described hollow handle is provided with grabs bar.
4, according to claim 1 through intervertebral space vertebral body positor, it is characterized in that: the described rear end that lifts handle is provided with stubborn bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043424 CN2681691Y (en) | 2004-03-12 | 2004-03-12 | Centrum reductor by way of intervertebral space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043424 CN2681691Y (en) | 2004-03-12 | 2004-03-12 | Centrum reductor by way of intervertebral space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681691Y true CN2681691Y (en) | 2005-03-02 |
Family
ID=34608002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420043424 Expired - Fee Related CN2681691Y (en) | 2004-03-12 | 2004-03-12 | Centrum reductor by way of intervertebral space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681691Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810509A (en) * | 2010-04-23 | 2010-08-25 | 杭州市余杭区第一人民医院 | Spreader for unilateral expansive open-door vertebra board |
| CN102895017A (en) * | 2012-09-20 | 2013-01-30 | 杭州市余杭区第一人民医院 | Reset pliers for spreading and lifting lumbar vertebral bodies |
| CN103040518A (en) * | 2013-01-04 | 2013-04-17 | 浙江科惠医疗器械有限公司 | Minimally invasive system for thoracolumbar posterior |
| CN106809784A (en) * | 2017-03-13 | 2017-06-09 | 辽东学院 | A kind of reagent bottle inner cover opener and application method |
-
2004
- 2004-03-12 CN CN 200420043424 patent/CN2681691Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810509A (en) * | 2010-04-23 | 2010-08-25 | 杭州市余杭区第一人民医院 | Spreader for unilateral expansive open-door vertebra board |
| CN102895017A (en) * | 2012-09-20 | 2013-01-30 | 杭州市余杭区第一人民医院 | Reset pliers for spreading and lifting lumbar vertebral bodies |
| CN102895017B (en) * | 2012-09-20 | 2015-01-21 | 杭州市余杭区第一人民医院 | Reset pliers for spreading and lifting lumbar vertebral bodies |
| CN103040518A (en) * | 2013-01-04 | 2013-04-17 | 浙江科惠医疗器械有限公司 | Minimally invasive system for thoracolumbar posterior |
| CN106809784A (en) * | 2017-03-13 | 2017-06-09 | 辽东学院 | A kind of reagent bottle inner cover opener and application method |
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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 |