CN2444565Y - Vertebral body reductor - Google Patents
Vertebral body reductor Download PDFInfo
- Publication number
- CN2444565Y CN2444565Y CN 00249910 CN00249910U CN2444565Y CN 2444565 Y CN2444565 Y CN 2444565Y CN 00249910 CN00249910 CN 00249910 CN 00249910 U CN00249910 U CN 00249910U CN 2444565 Y CN2444565 Y CN 2444565Y
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- China
- Prior art keywords
- positor
- vertebral body
- top end
- end opening
- fracture
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of a medical appliance, particularly relating to a thoracic vertebra and lumbar vertebra fracture reduction apparatus. A reductor can control a reduction force, after backward convex deformation is corrected, the concrescence time of fracture is shortened, and the utility model has good reduction action to a patient of serious fracture of lumbar vertebrae or deferred operation. The utility model has the advantages of good reduction effect, easy operation and easy handling.
Description
This utility model belongs to medical instruments field, is specifically related to a kind of lumbar vertebra compression fracture reduction instrument.
Lumbar vertebra compression fracture is a modal fracture in the spinal injury, and lumbago and skelalgia, nervous lesion and the dyskinesia that is brought by fracture has a strong impact on patient's live and work.Wherein most patients is to cause owing to kyphosis deformity, unstable spine that the vertebral body malreduction causes.The method that reverts to the compression vertebral height at present has position to reset and apparatus resets, it is to recover vertebral height that position resets, the most ancient and effective method, be used for expectant treatment the earliest to spinal fracture, during the recovery that it mainly shows early stage bolster therapy and the motion of hyperextension was in the future taken exercise, it was to be that representative utilization fracture goes up the hypocentrum hyperextension and impels the fracture vertebra to reset with Harrington and pedicle of vertebral arch apparatus that apparatus resets.Above-mentioned two kinds of methods all belong to when resetting when vertebral body compression serious or non-urgent surgery indirectly from mode, because of vertebral body bone trabecula generation non-reversible deformation, reset inadequately directly and strong, so reset effect is all not ideal enough.
The purpose of this invention is to provide a kind of vertebral body positor, the may command strength that resets is corrected kyphosis deformity, shortens healing time, and is good to patient's reset response of the serious lumbar vertebra fracture or the operation of delaying.
This utility model vertebral body positor enters vertebral body by sick vertebra both sides pedicle of vertebral arch, and directly the vertebral body to compression resets, and this vertebral body positor is by top end opening device 1, fuse strut 2, and shaft 3, bar handle 4, top end opening actuator 5 are connected with localizer 6 to be made.This positor length overall is designed to 270mm, and entering Intrapyramidal length is 30mm, and the Lift of top end opening device is 30mm closely, and the fuse strut adopts 2Gr13 medical stainless steel material.All the other other parts of positor adopt 1Gr13 medical stainless steel material.The top end opening height of this positor top end opening device is controlled by the fuse strut by the top end opening actuator, the top end opening device is connected by bolt with shaft, the fuse strut slides in the chute of top end opening device, and is connected by connecting rod with the top end opening actuator, and shaft and bar handle are an integral body.Top end opening actuator and bar handle are all by being threaded.The top end opening device of this positor is long to be 30mm, and diameter is 10mm, and for cylindrical, opening actuator diameter is 50-80mm, and the localizer diameter is 10-20mm, is flat-shaped circle.
This utility model is after conventional beam worker is finished before patient performs the operation, enter vertebral body and arrive anterior margin of vertebral body thoroughly down with the pedicle of vertebral arch of positor at electricity from sick vertebra both sides, rotating the round handle of positor tail end opens the positor top gradually, anterior margin of vertebral body is strutted, till seeing that vertebral body returns to satisfied height down thoroughly at electricity.The sclerotin that scrapes and the post-decompression bone piece of vertebral body are implanted from the pedicle of vertebral arch of sick vertebra both sides, and filling is because of vertebral body damaged after strutting.Further drawing-off anterior longitudinal ligament of the effect that utilizes apparatus to reset and intervertebral disc make resetting of vertebral body more satisfied.
This utility model is through clinic trial, and the sick vertebra of patient returns to the line of force that original height has recovered spinal column substantially, kyphosis deformity do not occur.Owing to directly carry out distraction reduction in spongy bone, the ideal that resets is grasped again easily, so effect is remarkable.By statistics: the recovery of using patient's vertebral height of the present utility model is all above 2/3 of original vertebral height, and wherein 2 examples reach original height substantially.The physiological curve of spinal column has obtained recovery.Wherein 3 routine paresis patient postoperative 2-3 are monthly walks down, Frankel classification 1 routine E level, and 2 routine D levels, 2 people have now participated in light work.Wherein the Frankel classification in 3 months of 2 routine paralyses patient postoperatives all reaches the C level.The above results confirms: this vertebral body positor has the reduction with good effect to the patient of the serious lumbar vertebra compression fracture or the operation of delaying.Bone grafting helps keeping the height of postcentrum of resetting in the vertebral body after resetting, reduces stress concentration, impels the union of fracture phase to shorten.
Description of drawings: Fig. 1 is that the structure chart of vertebral body positor wherein 1 is localizer for bar handle 5 for top end opening actuator 6 for shaft 4 for fuse strut 3 for top end opening device 2
Embodiment:
Adopt 2Gr13 medical stainless steel material to make the fuse strut, adopt the 1Gr13 medical stainless steel to make top end opening device, shaft, bar handle, top end opening actuator and localizer respectively, and connect successively threadably.Wherein the top end opening device is long is 30mm, and diameter is 6mm, and its inboard is provided with chute, the fuse strut slides in chute, and be connected by connecting rod with the top end opening actuator, the upper and lower opening scope is 0-30mm, shaft is long to be 20mm, diameter is 6mm, bar handle length is 10mm, and diameter is 10mm, all makes cylindrical, top end opening actuator and localizer are all made circular flat-shaped, so that operation.Diameter is respectively 80mm and 20mm.Patient performs the operation when using, the pedicle of vertebral arch of this positor from sick vertebra both sides entered vertebral body and arrive anterior margin of vertebral body thoroughly down at electricity, rotate the round handle of positor tail end and gradually the positor top is opened, anterior margin of vertebral body is strutted, till seeing that vertebral body returns to satisfied height down thoroughly at electricity.
Claims (4)
1, a kind of vertebral body positor is characterized in that being connected by engage thread with localizer by top end opening device, fuse strut, shaft, bar handle, top end opening actuator and makes.
2, by the described vertebral body positor of claim 1, it is characterized in that described positor top end opening device makes cylindrically, length is 30mm, and diameter is 10mm, and the opening scope is 0-30mm.
3, by the described vertebral body positor of claim 1, it is characterized in that described positor shaft bar handle is linked as an integral body.
4, by the described vertebral body positor of claim 1, it is characterized in that described positor top end opening actuator diameter is 50-80mm, the localizer diameter is 10-20mm, all makes flat-shaped circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249910 CN2444565Y (en) | 2000-11-02 | 2000-11-02 | Vertebral body reductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249910 CN2444565Y (en) | 2000-11-02 | 2000-11-02 | Vertebral body reductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2444565Y true CN2444565Y (en) | 2001-08-29 |
Family
ID=33608247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00249910 Expired - Fee Related CN2444565Y (en) | 2000-11-02 | 2000-11-02 | Vertebral body reductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2444565Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340215C (en) * | 2005-09-19 | 2007-10-03 | 吴乃庆 | Bone dilator |
-
2000
- 2000-11-02 CN CN 00249910 patent/CN2444565Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340215C (en) * | 2005-09-19 | 2007-10-03 | 吴乃庆 | Bone dilator |
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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 |