CN202207197U - Pedicle screw system spreader - Google Patents
Pedicle screw system spreader Download PDFInfo
- Publication number
- CN202207197U CN202207197U CN2011202725483U CN201120272548U CN202207197U CN 202207197 U CN202207197 U CN 202207197U CN 2011202725483 U CN2011202725483 U CN 2011202725483U CN 201120272548 U CN201120272548 U CN 201120272548U CN 202207197 U CN202207197 U CN 202207197U
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- China
- Prior art keywords
- sleeve
- strut
- fixing unit
- guide shaft
- shaft fixing
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Abstract
The utility model relates to a pedicle screw system spreader. It is characterized in that the pedicle screw system spreader includes a spreading guide fixing piece, a fixed sleeve base fixed on the spreading guide fixing piece, a glide sleeve base connecting with the spreading guide fixing piece in a gliding manner, a spreading positioning assembly connecting with the glide sleeve base fixedly and cooperating with the spreading guide fixing piece for spreading positioning, and a pair of sleeve assemblies arranged on the fixed sleeve base and the glide sleeve base respectively. The sleeve assemblies are arranged on the same side of the spreading guide fixing piece. The utility model aims to provide the pedicle screw system spreader capable of spreading operation of the pedicle screw system. The pedicle screw system spreader can be used conveniently. And by using the pedicle screw system spreader, an operation of restoring a height of a compressed vertebra can be realized outside a body.
Description
Technical field
This utility model relates to a kind of pedicle nail system dilator.
Background technology
The patent No. is 201020142371.0 disclosed pedicle nail systems; Constitute by pedicle nail, pedicle nail pitman and lock nut; It has operation and places safety, otch is little, damage is little advantage, and help pitman arrangement, reset and lock.In order to carry out the operation that struts of pedicle nail system more easily, need a kind of dilator that matches with the pedicle nail system of research and development.
Summary of the invention
The purpose of this utility model is to provide a kind of pedicle nail system dilator, and it can strut operation to the pedicle nail system, and it is easy to use, the operation that can recover at external completion compression vertebral height.
The purpose of this utility model realizes through following technical scheme: a kind of pedicle nail system dilator is characterized in that: it comprise strut guide shaft fixing unit, be fixed in the fixed cover cylinder base that struts on the guide shaft fixing unit, with strut throwout sleeve seat that guide shaft fixing unit activity slippage is connected, be fixedly connected with the throwout sleeve seat and with strut guide shaft fixing unit cooperate strut localized strut positioning component and be divided into the fixed cover cylinder base and the sleeve sliding seat on a pair of sleeve assembly; Said sleeve assembly is located at the same side that struts guide shaft fixing unit.
The method for using of this utility model is following: inserting pedicle nail; After accomplishing the laying of pedicle nail pitman; Two sleeve assemblies are nested with respectively outside two pedicle nails of correspondence, regulate strutting positioning component afterwards, the direction away from the fixed cover cylinder base moves in the guide effect lower edge that struts guide shaft fixing unit to drive the throwout sleeve seat; Make the distance that is sheathed on respectively between two pedicle nails in two sleeve assemblies increase; Thereby make the compression vertebral height be able to recover, insert lock nut and locking by the sleeve assembly upper end afterwards, so that pedicle nail and pedicle nail pitman are locked together.
This utility model has also carried out following improvement:
Said sleeve assembly comprises the movable sleeve that is rotationally connected with fixed cover cylinder base or throwout sleeve seat, be sheathed in the movable sleeve and can be along movable sleeve the bearing of trend sleeve of slippage and the rotational fixture that cooperate the rotation of control movable sleeve with fixed cover cylinder base or throwout sleeve seat up and down; Said telescopic top is sheathed in the movable sleeve, offers the U-shaped groove of the nested pedicle nail pitman of a pair of ability on the sidewall of said sleeve bottom.Through cooperating of U-shaped groove and pedicle nail pitman, thereby rotation appears in pedicle nail when more effectively preventing to lock lock nut, makes dilator obtain better antitorque effect.
The said guide shaft fixing unit that struts is a tooth bar; Said strut positioning component comprise the pedestal that is fixedly connected with the throwout sleeve seat, be sheathed on pedestal in and with strut guide shaft fixing unit on teeth be meshed the gear that cooperates, with the coaxial fixed connection of gear strut knob, with strut guide shaft fixing unit on teeth be meshed cooperation and the non-return ratchet that is articulated and connected through jointed shaft and pedestal and be sheathed on jointed shaft and act on the reduction torsion spring between non-return ratchet and the pedestal outward; Said jointed shaft and gear shaft are to paralleling.Under the effect of reduction torsion spring, the non-return ratchet be inserted in the teeth groove between two teeth that strut on the guide shaft fixing unit and roof pressure on side teeth near the sleeve fixed pedestal, thereby make the distance that struts keep fixing.
Compared to prior art, the advantage of this utility model is:
(1) it can strut operation to the pedicle nail system, and it is easy to use, can be in the operation of external completion compression vertebral height recovery;
(2) nested through U-shaped groove and pedicle nail pitman, thus rotating appears in pedicle nail when more effectively preventing to lock lock nut, makes dilator obtain better antitorque effect.
Description of drawings
Fig. 1 is the structural representation of a kind of pedicle nail of this utility model dilator embodiment of system.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the working state schematic representation of Fig. 1 embodiment.
Label declaration: 1, strut guide shaft fixing unit, 2, the fixed cover cylinder base, 3, the throwout sleeve seat, 4, movable sleeve; 5, sleeve, 6, rotational fixture, 7, the pedicle nail pitman, 8, the U-shaped groove; 9, pedestal, 10, gear, 11, strut knob, 12, jointed shaft; 13, non-return ratchet, 14, reduction torsion spring, 15, pedicle nail.
The specific embodiment
Below in conjunction with Figure of description and embodiment this utility model content is elaborated:
Like the embodiment sketch map of Fig. 1 to a kind of pedicle nail system dilator that provides for this utility model shown in Figure 5.
A kind of pedicle nail system dilator is characterized in that: it comprise strut guide shaft fixing unit 1, be fixed in the fixed cover cylinder base 2 that struts on the guide shaft fixing unit 1, with strut throwout sleeve seat 3 that guide shaft fixing unit 1 activity slippage is connected, be fixedly connected with throwout sleeve seat 3 and with strut guide shaft fixing unit 1 cooperate strut localized strut positioning component and be divided into fixed cover cylinder base 2 and throwout sleeve seat 3 on a pair of sleeve assembly; Two sleeve assemblies are located at the same side that struts guide shaft fixing unit 1.
Said sleeve assembly comprises the movable sleeve 4 that is rotationally connected with fixed cover cylinder base 2 or throwout sleeve seat 3, be sheathed in the movable sleeve 4 and can be along movable sleeve 4 the bearing of trends sleeve 5 of slippage and the rotational fixture 6 that cooperate 4 rotations of control movable sleeve with fixed cover cylinder base 2 or throwout sleeve seat 3 up and down; The top of said sleeve 5 is sheathed in the movable sleeve 4, offers the U-shaped groove 8 of the nested pedicle nail pitman 7 of a pair of ability on the said sleeve 5 bottom sidewalls.Pivot center between said fixed cover cylinder base 2 and its movable sleeve 4 is parallel to the guiding bearing of trend that struts guide shaft fixing unit 1, and the pivot center between said throwout sleeve seat 3 and its movable sleeve 4 is perpendicular to the guiding bearing of trend that struts guide shaft fixing unit 1.
The said guide shaft fixing unit 1 of strutting is tooth bar, said strut positioning component comprise the pedestal 9 that is fixedly connected with throwout sleeve seat 3, be sheathed on pedestal 9 in and with strut guide shaft fixing unit 1 on teeth be meshed the gear 10 that cooperates, with gear 10 coaxial fixed connections strut knob 11, with strut guide shaft fixing unit 1 on teeth be meshed cooperation and the non-return ratchet 13 that is articulated and connected through jointed shaft 12 and pedestal 9 and be sheathed on outside the jointed shaft 12 and act on the reduction torsion spring 14 between non-return ratchet 13 and the pedestal 9; Said jointed shaft 12 axially parallels with gear 10.
Claims (3)
1. pedicle nail system dilator is characterized in that: it comprise strut guide shaft fixing unit (1), be fixed in the fixed cover cylinder base (2) that struts on the guide shaft fixing unit (1), with strut throwout sleeve seat (3) that guide shaft fixing unit (1) activity slippage is connected, be fixedly connected with throwout sleeve seat (3) and with strut guide shaft fixing unit (1) cooperate strut localized strut positioning component and be divided into fixed cover cylinder base (2) and throwout sleeve seat (3) on a pair of sleeve assembly; Two sleeve assemblies are located at the same side that struts guide shaft fixing unit (1).
2. pedicle nail according to claim 1 system dilator is characterized in that: said sleeve assembly comprises the movable sleeve (4) that is rotationally connected with fixed cover cylinder base (2) or throwout sleeve seat (3), be sheathed in the movable sleeve (4) and can be along movable sleeve (4) the bearing of trend sleeve (5) of slippage and the rotational fixture (6) that cooperate control movable sleeve (4) rotation with fixed cover cylinder base (2) or throwout sleeve seat (3) up and down; The top of said sleeve (5) is sheathed in the movable sleeve (4), offers the U-shaped groove (8) of the nested pedicle nail pitman of a pair of ability (7) on the sidewall of said sleeve (5) bottom.
3. pedicle nail according to claim 2 system dilator; It is characterized in that: the said guide shaft fixing unit (1) that struts is a tooth bar, said strut positioning component comprise the pedestal (9) that is fixedly connected with throwout sleeve seat (3), be sheathed on pedestal (9) in and with strut guide shaft fixing unit (1) on teeth be meshed the gear (10) that cooperates, with the coaxial fixed connection of gear (10) strut knob (11), with strut guide shaft fixing unit (1) on teeth be meshed cooperation and the non-return ratchet (13) that is articulated and connected through jointed shaft (12) and pedestal (9) and be sheathed on outside the jointed shaft (12) and act on the reduction torsion spring (14) between non-return ratchet (13) and the pedestal (9); Said jointed shaft (12) axially parallels with gear (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202725483U CN202207197U (en) | 2011-07-29 | 2011-07-29 | Pedicle screw system spreader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202725483U CN202207197U (en) | 2011-07-29 | 2011-07-29 | Pedicle screw system spreader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202207197U true CN202207197U (en) | 2012-05-02 |
Family
ID=45986755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202725483U Expired - Lifetime CN202207197U (en) | 2011-07-29 | 2011-07-29 | Pedicle screw system spreader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202207197U (en) |
Cited By (7)
| 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 |
| CN103126754A (en) * | 2013-03-26 | 2013-06-05 | 江苏荷普医疗器械有限公司 | Cervical vertebra expander |
| CN105361934A (en) * | 2015-12-08 | 2016-03-02 | 邵阳市中医医院 | Thoracolumbar spine compression fracture percutaneous minimally invasive distraction reduction device |
| CN105596040A (en) * | 2016-01-29 | 2016-05-25 | 山东威高骨科材料股份有限公司 | Intervertebral expander for TLIF (Transforaminal Lumbar Interbody Fusion) surgical channel |
| CN107440777A (en) * | 2017-08-09 | 2017-12-08 | 中国人民解放军第二军医大学第二附属医院 | A kind of anterior approach rotates orthopedic vertebrae strutting device |
| US9907582B1 (en) | 2011-04-25 | 2018-03-06 | Nuvasive, Inc. | Minimally invasive spinal fixation system and related methods |
-
2011
- 2011-07-29 CN CN2011202725483U patent/CN202207197U/en not_active Expired - Lifetime
Cited By (10)
| 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 |
| CN103126754A (en) * | 2013-03-26 | 2013-06-05 | 江苏荷普医疗器械有限公司 | Cervical vertebra expander |
| CN105361934A (en) * | 2015-12-08 | 2016-03-02 | 邵阳市中医医院 | Thoracolumbar spine compression fracture percutaneous minimally invasive distraction reduction device |
| CN105596040A (en) * | 2016-01-29 | 2016-05-25 | 山东威高骨科材料股份有限公司 | Intervertebral expander for TLIF (Transforaminal Lumbar Interbody Fusion) surgical channel |
| CN107440777A (en) * | 2017-08-09 | 2017-12-08 | 中国人民解放军第二军医大学第二附属医院 | A kind of anterior approach rotates orthopedic vertebrae strutting device |
| CN107440777B (en) * | 2017-08-09 | 2020-05-08 | 中国人民解放军第二军医大学第二附属医院 | Cervical anterior rotation orthopedic vertebral body spreader |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120502 Effective date of abandoning: 20130710 |
|
| RGAV | Abandon patent right to avoid regrant |