CN2889191Y - In-vitro applied vertebrae dialator - Google Patents
In-vitro applied vertebrae dialator Download PDFInfo
- Publication number
- CN2889191Y CN2889191Y CNU2006200506160U CN200620050616U CN2889191Y CN 2889191 Y CN2889191 Y CN 2889191Y CN U2006200506160 U CNU2006200506160 U CN U2006200506160U CN 200620050616 U CN200620050616 U CN 200620050616U CN 2889191 Y CN2889191 Y CN 2889191Y
- Authority
- CN
- China
- Prior art keywords
- support arm
- arm
- vertebral
- vertebral body
- screw
- 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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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
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
- A61B17/7077—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for moving bone anchors attached to vertebrae, thereby displacing the vertebrae
Abstract
An in vitro vertebral distraction device comprises a lower supporting arm (5) and an upper supporting arm (8) in X-shaped hinge joint, a stretching screw (6) adapted to screw connection between arms at one side of the hinge joint, and a vertebral pedicle screw (1) disposed at each arm at the other side of the hinge joint. The vertebral pedicle screw (1) is inserted into two adjacent compressed vertebral bodies and distracted, so as to restore the compressed vertebral body. The utility model omits open operation and operation for removing inner fixation screw, and helps to restore the height and shape of injured vertebral body and thus to recover spinal function. The utility model has advantages of simple structure, easy operation, and good therapeutic effect.
Description
Technical field
This utility model relates to a kind of medical apparatus, especially a kind of adjustable vertebral body distraction instrument that is used for the treatment of compression fracture of vertabral body.
Background technology
Clinical common vertebroplasty was to adopt open surgery in the past, was hindering the direct bone cement that injects on the vertebra, and postoperative is performed the operation once more and taken out the internal fixation adminicle, in order to reach the healing aim of alleviating pain.Yet this traditional vertebroplasty does not obtain orthopedic reduction owing to hinder vertebra in operation process, promptly recover original spinal column sequence, so make the patient still have the leftover problem of kyphosis deformity and chronic back pain.
The utility model content
The technical problems to be solved in the utility model is, overcome the defective of above-mentioned existing modus operandi, providing a kind of can strut external enforcement vertebral body, recover original height and promptly recover original spinal column sequence thereby can before vertebral body is injected bone cement, will hinder vertebra, implement the assistive device that bone cement injects treatment then safely.
Technical solution of the present utility model is, a kind of in-vitro applied vertebral body dilator is provided, referring to Fig. 1, this dilator has and is hinged lower support arm 5 of X-shaped and upper support arm 8, its technical characterstic is, thread connection has the adjustment screw rod 6 of this two arms opening width of a scalable between described lower support arm 5 and upper support arm 8 hinged places one side, the two arm arm ends, and hinged place opposite side lower support arm 5 and upper support arm 8 arm ends are respectively arranged with by regulating the pedicle screw 1 that bolt 9 is threaded.
By this utility model in-vitro applied vertebral body dilator that constitutes with upper member, tightly tune whole screw rod 6 both sides pedicle screw 1 is opened to both sides are angled; Tuning joint bolt 9 by pine makes both sides pedicle screw 1 by the outside translation in both sides.As pedicle screw 1 being inserted into the vertebral body of adjacent two compressions, can make it to reset by strutting both sides pedicle screw 1 tractive vertebral body.
Therefore, when this utility model used, the medical worker can directly insert the pedicle screw 1 of above-mentioned dilator in the pedicle of vertebral arch of hindering the adjacent upward hypocentrum of vertebra, and upper support arm 8 and lower support arm 5 are inserted in the pedicle screw 1 of both sides.Regulating adjustment screw rod 6 makes both sides pedicle screw 1 become the required angle of treatment to strut to both sides.Regulate regulating bolt 9 makes the pedicle screw 1 of both sides translation struts to both sides.By hindering angle and the translation opening width thereof that the neighbouring vertebral body of vertebra forms, the wedge shape compression of hindering vertebra is reverted to original shape, the sequence of spinal column also is restored simultaneously.Pedicle of vertebral arch by hindering vertebra is injected bone cement and is made its setting and hardening hindering on the vertebra again.
The beneficial effects of the utility model are, because this in-vitro applied vertebral body dilator is simple in structure, use light, easy operating, can make the patient reach operation once more and take out the internal fixation adminicle without open surgery, vertebroplasty analgesic effect before not only reaching equally, and can recover to hinder the height and the shape of vertebra, make it to recover original spinal column sequence.And it is remarkable to be proved to be effect by clinic trial, reaches designing requirement fully, and the patient feels good, and hinders the vertebra healing and accelerates, and is worth of widely use.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of this utility model in-vitro applied vertebral body dilator, is denoted as among the figure:
The 1-pedicle screw,
2-garden arc nut,
The 3-fastening nut,
4-shank cover,
5-lower support arm,
6-adjusts screw rod,
The axial snap ring of 7-,
8-upper support arm,
9-regulates bolt,
The 10-lock nut.
The specific embodiment
Referring to accompanying drawing 1, this embodiment of the adjustable in-vitro applied vertebral body of this utility model dilator thickness of drawing materials is that the bar section of stainless steel of 8mm is made lower support arm 5 and upper support arm 8.Lower support arm 5 and upper support arm are X-shaped symmetry hinged in opposite directions 8.Thread connection is adjusted screw rod 6 between lower support arm 5 and upper support arm 8 hinged places one side, the two arm arm ends, and axially snap ring 7 is inserted in and adjusts location on the screw rod 6.Hinged place opposite side lower support arm 5 and upper support arm 8 arm ends are provided with respectively by regulating the pedicle screw 1 that bolt 9 is threaded, and arc nut 2 fastening nuts 3 in garden are inserted in lower support arm 5 and upper support arm 8 location respectively.In addition, also be provided with shank cover 4 between lower support arm 5 or upper support arm 8 arm ends and the adjusting bolt 9, lock nut 10 is inserted in regulates bolt 9 location.
Claims (2)
1, a kind of in-vitro applied vertebral body dilator, have and be hinged lower support arm (5) of X-shaped and upper support arm (8), it is characterized in that, thread connection has the adjustment screw rod (6) of this two arms opening width of a scalable between described lower support arm (5) and upper support arm (8) the hinged place one side arm end, and hinged place opposite side lower support arm (5) and upper support arm (8) arm end are respectively arranged with by regulating the pedicle screw (1) that bolt (9) is threaded.
2, in-vitro applied vertebral body dilator according to claim 1 is characterized in that, is provided with shank cover (4) between described lower support arm (5) or upper support arm (8) arm end and the adjusting bolt (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200506160U CN2889191Y (en) | 2006-04-12 | 2006-04-12 | In-vitro applied vertebrae dialator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200506160U CN2889191Y (en) | 2006-04-12 | 2006-04-12 | In-vitro applied vertebrae dialator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2889191Y true CN2889191Y (en) | 2007-04-18 |
Family
ID=38019841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200506160U Expired - Fee Related CN2889191Y (en) | 2006-04-12 | 2006-04-12 | In-vitro applied vertebrae dialator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2889191Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319111A (en) * | 2011-07-29 | 2012-01-18 | 王春 | Spreader for pedicle screw systems |
| CN102743216A (en) * | 2012-06-26 | 2012-10-24 | 冯其金 | External thoracolumbar vertebra distraction repositor |
| US9907582B1 (en) | 2011-04-25 | 2018-03-06 | Nuvasive, Inc. | Minimally invasive spinal fixation system and related methods |
| CN109009136A (en) * | 2018-08-30 | 2018-12-18 | 中国人民解放军第二军医大学第二附属医院 | A kind of novel intervertebral measuring appliance |
| CN110074854A (en) * | 2018-01-26 | 2019-08-02 | 蛇牌股份公司 | Vertebra repositioning instrument and vertebra repositioning system |
| CN111603212A (en) * | 2020-06-15 | 2020-09-01 | 四川大学华西医院 | Old calcaneus fracture prying device |
-
2006
- 2006-04-12 CN CNU2006200506160U patent/CN2889191Y/en not_active Expired - Fee Related
Cited By (9)
| 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 |
| CN102319111A (en) * | 2011-07-29 | 2012-01-18 | 王春 | Spreader for pedicle screw systems |
| CN102743216A (en) * | 2012-06-26 | 2012-10-24 | 冯其金 | External thoracolumbar vertebra distraction repositor |
| CN110074854A (en) * | 2018-01-26 | 2019-08-02 | 蛇牌股份公司 | Vertebra repositioning instrument and vertebra repositioning system |
| CN109009136A (en) * | 2018-08-30 | 2018-12-18 | 中国人民解放军第二军医大学第二附属医院 | A kind of novel intervertebral measuring appliance |
| CN109009136B (en) * | 2018-08-30 | 2024-03-22 | 中国人民解放军第二军医大学第二附属医院 | Novel intervertebral measuring device |
| CN111603212A (en) * | 2020-06-15 | 2020-09-01 | 四川大学华西医院 | Old calcaneus fracture prying device |
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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 |