CN103908330A - Self-guide long-arm solid percutaneous pedicle screw - Google Patents
Self-guide long-arm solid percutaneous pedicle screw Download PDFInfo
- Publication number
- CN103908330A CN103908330A CN201410129233.1A CN201410129233A CN103908330A CN 103908330 A CN103908330 A CN 103908330A CN 201410129233 A CN201410129233 A CN 201410129233A CN 103908330 A CN103908330 A CN 103908330A
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- CN
- China
- Prior art keywords
- nail
- long
- cone
- back segment
- guiding
- 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.)
- Pending
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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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
Abstract
The invention discloses a self-guide long-arm solid percutaneous pedicle screw which comprises a screw head, a screw body and a screw tail connected in sequence from front to rear. The screw head is a solid cone. The section of the screw head decreases gradually from front to rear. The screw body comprises a solid cylinder front section and solid cone rear section. The front end of the cylinder front section and the rear end of the screw head are in smooth transition. The rear end of the cylinder front section and the front end of the cone rear end are in smooth transition. Outer threads are formed on the outer peripheral wall of the cylinder front section. The screw tail is U-shaped and provided with two fixing arms and a screw seat connecting the two fixing arms. The rear end of the cone rear section is connected with the screw seat. The section of the cone rear section gradually increases from front to rear. The rear-end section of the cone rear section is smaller than the section of the screw seat. The self-guide long-arm solid percutaneous pedicle screw has the advantages accurate percutaneous pedicle screw fixation is achieved, operative wound is reduced, and high mechanical strength of the pedicle screw is guaranteed.
Description
?
Technical field
The present invention relates to the pedicle screws fixation that vertebral column minimally invasive is used, be specifically related to from the long-armed solid percutaneous cervical arc root nail of guiding.
Background technology
At present, domestic known percutaneous cervical arc root nail is all hollow pedicle nail, complex manufacturing technology, and price is high, and biomechanical strength deficiency is blocked or flexural deformation by external force usually, also need guide UR to implant at guide pin.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide from the long-armed solid percutaneous cervical arc root nail of guiding, can realize at percutaneous cervical arc root nail and accurately put that nail is fixed, in minimizing operation wound, guarantee that pedicle nail has higher mechanical strength.
Object of the present invention adopts following technical scheme to realize:
From the long-armed solid percutaneous cervical arc root nail of guiding, comprise the ailhead, rivet nut and the nail tail that connect successively from front to back, described ailhead is filled circles cone, the cross-sectional sizes of this ailhead increases progressively from front to back gradually; Described rivet nut comprises solid cylinder leading portion and solid cone back segment, and the front end of cylinder leading portion and the rear end of ailhead seamlessly transit, and the front end of the rear end of cylinder leading portion and cone back segment seamlessly transits, and the periphery wall of cylinder leading portion is provided with external screw thread; Described nail tail takes the shape of the letter U, and has two fixed arms and the nail seat that is connected two fixed arms; The rear end of described cone back segment is connected with nail seat, and the cross section of this cone back segment increases progressively from front to back gradually, and the rear end cross-sectional sizes of this cone back segment is less than the cross-sectional sizes of nail seat.
Preferably, the head end of described ailhead is made as bulb, and the radius of this bulb is 1mm.
Preferably, the length of described ailhead is 8mm, and the tapering of ailhead is 10 °.
Preferably, the length of described cylinder leading portion is 25mm ~ 50mm, and the length of cone back segment is 6mm, and the tapering of cone back segment is 15 °.
Preferably, the length of described nail tail is 50mm ~ 70mm.
Preferably, described cone back segment and nail seat are hinged.
Preferably, the rear end of described cone back segment is provided with ball portion, and described nail seat has ball chamber, and ball is deployed in ball chamber and with ball chamber ball pivot and is connected.
Preferably, described in two, fixed arm is provided with horizontal mark of break, and this mark of break is divided into fixed arm the reserve part being connected with nail seat and the broken part being connected with reserve part.
Preferably, described in two, the medial wall of fixed arm is provided with female thread.
Preferably, described in two, the lateral wall of fixed arm is provided with anti-slip veins.
Compared to existing technology, beneficial effect of the present invention is:
The tapering that ailhead of the present invention has is put and in nail process, has been played good guide effect at percutaneous, and the length of set ailhead, tapering, with the transition setting of cylinder leading portion can make the process of follow-up fixing rivet nut obtain position more accurately, more stable being locked of support force, reduce the secondary insult of performing the operation; Simultaneously, ailhead of the present invention, rivet nut are solid, there is higher mechanical strength, putting in nail process and can effectively prevent from blocking or flexural deformation, and breast waist section vertebra is played to stronger supporting role, and the shape of the length setting of the present invention to rivet nut and cone back segment, length, cross-sectional sizes, also the effect of this raising mechanical strength has been given auxiliary with the transition setting of nail tail, the more difficult external force that is subject to of this pedicle nail is blocked, be applicable to pedicle nail in the invasive surgeries such as thoracolumbar fracture, spinal canal stenosis, intervertebral shakiness or slippage and fix.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is that the present invention follows closely the perspective view under one of them visual angle from the long-armed solid percutaneous cervical arc root of guiding;
Fig. 2 is that the present invention follows closely the perspective view under another visual angle from the long-armed solid percutaneous cervical arc root of guiding;
Fig. 3 is the structural representation of following closely the guider being used in conjunction with the present invention from the long-armed solid percutaneous cervical arc root of guiding;
Fig. 4 is the present invention follows closely another kind of embodiment cutaway view from the long-armed solid percutaneous cervical arc root of guiding.
In figure: 1, ailhead; 11, bulb; 2, rivet nut; 21, cylinder leading portion; 211, external screw thread; 22, cone back segment; 221, ball portion; 3, nail tail; 31, fixed arm; 311, mark of break; 312, reserve part; 313, broken part; 314, female thread; 315, anti-slip veins; 32, nail seat; 321, ball chamber; 4, guider.
The specific embodiment
The long-armed solid percutaneous cervical arc root nail of guiding certainly as shown in Figure 1 and 2, comprises the ailhead 1, rivet nut 2 and the nail tail 3 that connect successively from front to back, and ailhead 1 is filled circles cone, and the cross-sectional sizes of this ailhead 1 increases progressively from front to back gradually; Rivet nut 2 comprises solid cylinder leading portion 21 and solid cone back segment 22, the rear end of the front end of cylinder leading portion 21 and ailhead 1 seamlessly transits, the front end of the rear end of cylinder leading portion 21 and cone back segment 22 seamlessly transits, and the periphery wall of cylinder leading portion 21 is provided with external screw thread 211; Nail tail 3 takes the shape of the letter U, and has two fixed arms 31 and the nail seat 32 that is connected two fixed arms 31; The rear end of cone back segment 22 is connected with nail seat 32, and the cross section of this cone back segment 22 increases progressively from front to back gradually, and the rear end cross-sectional sizes of this cone back segment 22 is less than the cross-sectional sizes of nail seat 32.
In the present embodiment, the head end of ailhead 1 is made as bulb 11, and the radius of this bulb 11 is 1mm.The length of ailhead 1 is 8mm, and the tapering of ailhead 1 is 10 °, and this ailhead front end is bright finish.The length of cylinder leading portion 21 is 25mm ~ 50mm, and the length of cone back segment 22 is 6mm, and the tapering of cone back segment 22 is 15 °, and this cone back segment 22 is bright finish.The length of nail tail 3 has 50mm, 60mm, and 70mm3 kind also can be selected the scope of 50mm ~ 70mm in, and longer fixed arm 31 is beneficial to be put nail and operates and facilitate and being connected of pitman.
Two fixed arms 31 are provided with horizontal mark of break 311, and this mark of break 311 is divided into fixed arm 31 reserve part 312 being connected with nail seat 32 and the broken part 313 being connected with reserve part 312.Fixing rivet nut 2, putting after rod, can be along mark of break 311 fixed arm 31 that fractures, with separately broken part 313 and reserve part 312.
For outside pitman is implemented to fastening being fixedly connected with, the medial wall of two fixed arms 31 is provided with female thread 314, this female thread 314 can with pitman threaded engagement, make multiple to be connected with pitman from the long-armed solid percutaneous cervical arc roots nail of guiding, complete and put clubs and do.
For ease of implement to put the pressurized operation that struts of nail by fixed arm 31, the lateral wall of two fixed arms 31 is provided with anti-slip veins 315.
When use, under guide of fluoroscopy, percutaneous puncture pedicle reaches vertebral body trailing edge, pulls out pin stamen, insert guide pin, exit puncture needle, after expanding soft tissue passage, guide pin classification inserts working tube, hollow screw tap is along guide pin tapping, then inserts and this follows closely from the long-armed solid percutaneous cervical arc root of guiding the guider 4 being used in conjunction with along guide pin, as shown in Figure 3.
Insert this from the long-armed solid percutaneous cervical arc root nail of guiding along guider 4, in the time that ailhead 1 arrives the tapered portion of guider 4, guider 4, by distending, takes out guider 4, under guide effect, is screwed into vertebral body by cylinder leading portion 21 spirals at ailhead 1.Being locked by cylinder leading portion 21, this nails into and puts after nail operation from the long-armed solid percutaneous cervical arc root of guiding, takes out working tube, by female thread 314, pitman is installed, and completes to put clubs and do.
As another embodiment of the invention, i.e. the embodiment of universal nail, as shown in Figure 4, for ease of the pendulum angle of regulating nail tail 3, is beneficial to the follow-up excellent operation of putting, and cone back segment 22 is hinged with nail seat 32, and rivet nut 2 can relatively rotate with respect to nail tail 3.And be the universal rotational of realizing nail tail 3, the rear end of cone back segment 22 is provided with ball portion 221, and nail seat 32 has ball chamber 321, and ball portion 221 is placed in ball chamber 321 and is connected with ball chamber 321 ball pivots.
Above-mentioned embodiment is only the preferred embodiment of the present invention; can not limit the scope of protection of the invention with this, the variation of any unsubstantiality that those skilled in the art does on basis of the present invention and replacement all belong to the present invention's scope required for protection.
Claims (10)
1. from the long-armed solid percutaneous cervical arc root nail of guiding, comprise the ailhead, rivet nut and the nail tail that connect successively from front to back, it is characterized in that: described ailhead is filled circles cone, and the cross-sectional sizes of this ailhead increases progressively from front to back gradually; Described rivet nut comprises solid cylinder leading portion and solid cone back segment, and the front end of cylinder leading portion and the rear end of ailhead seamlessly transit, and the front end of the rear end of cylinder leading portion and cone back segment seamlessly transits, and the periphery wall of cylinder leading portion is provided with external screw thread; Described nail tail takes the shape of the letter U, and has two fixed arms and the nail seat that is connected two fixed arms; The rear end of described cone back segment is connected with nail seat, and the cross section of this cone back segment increases progressively from front to back gradually, and the rear end cross-sectional sizes of this cone back segment is less than the cross-sectional sizes of nail seat.
2. the long-armed solid percutaneous cervical arc root nail of guiding certainly according to claim 1, is characterized in that: the head end of described ailhead is made as bulb, and the radius of this bulb is 1mm.
3. the long-armed solid percutaneous cervical arc root nail of guiding certainly according to claim 2, is characterized in that: the length of described ailhead is 8mm, and the tapering of ailhead is 10 °.
4. the long-armed solid percutaneous cervical arc root nail of guiding certainly according to claim 3, is characterized in that: the length of described cylinder leading portion is 25mm ~ 50mm, and the length of cone back segment is 6mm, and the tapering of cone back segment is 15 °.
5. according to claim 4 from the long-armed solid percutaneous cervical arc root nail of guiding, it is characterized in that: the length of described nail tail is 50mm ~ 70mm.
6. according to the long-armed solid percutaneous cervical arc root nail of the guiding certainly described in claim 1 ~ 5 any one, it is characterized in that: described cone back segment and nail seat are hinged.
7. the long-armed solid percutaneous cervical arc root nail of guiding certainly according to claim 6, is characterized in that: the rear end of described cone back segment is provided with ball portion, and described connecting portion has ball chamber, and ball is deployed in ball chamber and with ball chamber ball pivot and is connected.
8. according to the long-armed solid percutaneous cervical arc root nail of the guiding certainly described in claim 1 ~ 5 any one, it is characterized in that: described in two, fixed arm is provided with horizontal mark of break, this mark of break is divided into fixed arm the reserve part being connected with nail seat and the broken part being connected with reserve part.
9. according to claim 8 from the long-armed solid percutaneous cervical arc root nail of guiding, it is characterized in that: described in two, the medial wall of fixed arm is provided with female thread.
10. according to claim 8 from the long-armed solid percutaneous cervical arc root nail of guiding, it is characterized in that: described in two, the lateral wall of fixed arm is provided with anti-slip veins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129233.1A CN103908330A (en) | 2014-03-31 | 2014-03-31 | Self-guide long-arm solid percutaneous pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129233.1A CN103908330A (en) | 2014-03-31 | 2014-03-31 | Self-guide long-arm solid percutaneous pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103908330A true CN103908330A (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410129233.1A Pending CN103908330A (en) | 2014-03-31 | 2014-03-31 | Self-guide long-arm solid percutaneous pedicle screw |
Country Status (1)
| Country | Link |
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| CN (1) | CN103908330A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989517A (en) * | 2014-05-07 | 2014-08-20 | 广州医科大学附属第一医院 | Guiding device of solid thoracolumbar-spine pedicle screw |
| CN107007340A (en) * | 2017-05-14 | 2017-08-04 | 山东航维骨科医疗器械股份有限公司 | A kind of backbone is fixed and uses horizontal-associate device |
| CN109998656A (en) * | 2019-04-10 | 2019-07-12 | 晏怡果 | Vertebral pedicle nail fixer for cervical vertebrae, fixed system and fixing means |
| CN111631787A (en) * | 2020-04-16 | 2020-09-08 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Long-arm nail guiding device and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207678A (en) * | 1989-07-20 | 1993-05-04 | Prufer | Pedicle screw and receiver member therefore |
| US6554834B1 (en) * | 1999-10-07 | 2003-04-29 | Stryker Spine | Slotted head pedicle screw assembly |
| CN2788753Y (en) * | 2005-05-31 | 2006-06-21 | 杨立群 | Universal spinal column internal fixing system |
| CN201185960Y (en) * | 2008-04-25 | 2009-01-28 | 刘伟强 | Medical vertebral pedicle screw nail mechanism |
| CN202078383U (en) * | 2011-05-12 | 2011-12-21 | 上海市第六人民医院 | Internal fixator for pelvis |
| US20120143011A1 (en) * | 2008-02-28 | 2012-06-07 | Josef Gorek | Minimally invasive retractor with separable blades and methods of use |
| CN203089346U (en) * | 2012-12-27 | 2013-07-31 | 苏州欣荣博尔特医疗器械有限公司 | Spine screw capable of swinging along signal direction |
-
2014
- 2014-03-31 CN CN201410129233.1A patent/CN103908330A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207678A (en) * | 1989-07-20 | 1993-05-04 | Prufer | Pedicle screw and receiver member therefore |
| US6554834B1 (en) * | 1999-10-07 | 2003-04-29 | Stryker Spine | Slotted head pedicle screw assembly |
| CN2788753Y (en) * | 2005-05-31 | 2006-06-21 | 杨立群 | Universal spinal column internal fixing system |
| US20120143011A1 (en) * | 2008-02-28 | 2012-06-07 | Josef Gorek | Minimally invasive retractor with separable blades and methods of use |
| CN201185960Y (en) * | 2008-04-25 | 2009-01-28 | 刘伟强 | Medical vertebral pedicle screw nail mechanism |
| CN202078383U (en) * | 2011-05-12 | 2011-12-21 | 上海市第六人民医院 | Internal fixator for pelvis |
| CN203089346U (en) * | 2012-12-27 | 2013-07-31 | 苏州欣荣博尔特医疗器械有限公司 | Spine screw capable of swinging along signal direction |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989517A (en) * | 2014-05-07 | 2014-08-20 | 广州医科大学附属第一医院 | Guiding device of solid thoracolumbar-spine pedicle screw |
| CN103989517B (en) * | 2014-05-07 | 2016-12-07 | 广州医科大学附属第一医院 | The guider of the solid pedicle nail of Thoracolumbar disk |
| CN107007340A (en) * | 2017-05-14 | 2017-08-04 | 山东航维骨科医疗器械股份有限公司 | A kind of backbone is fixed and uses horizontal-associate device |
| CN109998656A (en) * | 2019-04-10 | 2019-07-12 | 晏怡果 | Vertebral pedicle nail fixer for cervical vertebrae, fixed system and fixing means |
| CN111631787A (en) * | 2020-04-16 | 2020-09-08 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Long-arm nail guiding device and using method thereof |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140709 |