CN103784187B - A kind of Wicresoft wedge lock pedicle nail - Google Patents
A kind of Wicresoft wedge lock pedicle nail Download PDFInfo
- Publication number
- CN103784187B CN103784187B CN201410064129.9A CN201410064129A CN103784187B CN 103784187 B CN103784187 B CN 103784187B CN 201410064129 A CN201410064129 A CN 201410064129A CN 103784187 B CN103784187 B CN 103784187B
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- CN
- China
- Prior art keywords
- wedge
- locking
- nail
- briquetting
- wicresoft
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Classifications
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- 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
Abstract
The invention discloses a kind of Wicresoft wedge lock pedicle nail, comprise rivet nut 1, jackscrew 2, locking wedge 3, briquetting 4, described rivet nut 1 is provided with screw division, the upper end of described screw division is provided with nail seat, the side of described nail seat is provided with the excellent hole of nail and holds nail, top is provided with nail silk hole, described nail silk hole wall is provided with two open slots, the bottom of described locking wedge is provided with locking wedge inclined-plane, top is provided with wedge handle, described wedge handle is provided with barb for retracting locking wedge, described briquetting is provided with the arc groove under shed, epimere outside described arc groove two is provided with two briquetting inclined-planes, hypomere is provided with two guide ledges, during use, screw division is screwed in vertebral body, again curved good spinal rod 5 is inserted spinal rod hole, then successively briquetting and two locking wedges are pushed into spinal rod along open slot, screw in jackscrew again and compress locking wedge, briquetting also locks spinal rod.This Wicresoft's wedge lock pedicle nail adopts tapered ramp pressurization anti-loosening locking mode, has stronger self-locking anti-loosing function.
Description
Technical field
The present invention relates to orthopedic medical device field.
Background technology
Minimally Invasive Surgery is widely used in recent years, and the application of Wicresoft's pedicle nail in spinal operation also gets more and more.The patent No.: CN200820178613.4 discloses a kind of Wicresoft pedicle nail, is applicable to the diseases such as treatment thoracic and lumbar vertebral posterior short segment wound, tumor and unstable spine.Current Wicresoft's pedicle nail, primarily of screwing in the nail seat of the screw of spinal vertebral, attachment screw and spinal rod and locking jackscrew and form, the locking mode of its spinal rod, that the linear contact lay mode formed by the jackscrew end face compression spinal rod face of cylinder is locked, analyze from locking mode, the face way of contact is larger than the locking stability of linear contact lay mode, anti-loosening property is higher.
Summary of the invention
The invention discloses a kind of Wicresoft wedge lock pedicle nail, have employed the locking mode of the higher face contact type cuniform increase power pressurization of locking anti-loosening property, comprise rivet nut, jackscrew, locking wedge, briquetting, described rivet nut is provided with screw division, for screwing in spinal vertebral, the upper end of described screw division is provided with nail seat, the side of described nail seat is provided with through spinal rod hole and holds nail, the top of described nail seat is provided with top wire hole, described top wire hole communicates with spinal rod hole, the inwall of described top wire hole is provided with two open slots, rotate rivet nut for coordinating special spanner and place described briquetting and two locking wedges, described briquetting is provided with the arc groove under shed, the arc surface of described arc groove requires to coordinate with the face of cylinder of spinal rod, epimere outside described arc groove two is provided with two briquetting inclined-planes, hypomere is provided with two guide ledges, the bottom of described locking wedge is provided with locking wedge inclined-plane, spinal rod is locked for coordinating described briquetting inclined-plane in described locking wedge inclined-plane, the top of described locking wedge is provided with wedge handle, the end face of described wedge handle is set to plane, described wedge handle is provided with the syndeton such as barb or screw thread for retracting locking wedge, first screw division is screwed in spinal vertebral during use, again curved good spinal rod is inserted spinal rod hole, then successively briquetting and two locking wedges put into two open slots and fitted in the inclined-plane of the inclined-plane of locking wedge and briquetting the arc groove of briquetting is pushed into follow closely rod, screw in jackscrew again and by compressing locking wedge and briquetting by locking firm for spinal rod.This Wicresoft's wedge lock pedicle nail have employed tapered ramp pressurization anti-loosening locking, having larger coupling mechanism force and locking power, because this enhancing the steadiness of spinal operation, thus effectively can improve the success rate of operation.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of a kind of Wicresoft of the present invention wedge lock pedicle nail;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the schematic diagram of rivet nut in a kind of Wicresoft of the present invention wedge lock pedicle nail;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the schematic diagram of locking wedge in a kind of Wicresoft of the present invention wedge lock pedicle nail;
Fig. 6 is the schematic diagram of briquetting in a kind of Wicresoft of the present invention wedge lock pedicle nail;
In accompanying drawing: 1. rivet nut; 2. jackscrew; 3. locking wedge; 4.Briquetting; 5. spinal rod; 6. screw division; 7. nail seat, 8. spinal rod hole; 9. top wire hole; 10. open slot; 11. locking wedge inclined-planes; 12. wedge handles; 13. barbs; 14. arc grooves; 15 briquetting inclined-planes; 16. guide ledges.
Embodiment:
Fig. 1 to Fig. 6 shows the embodiment of a kind of Wicresoft of the present invention wedge lock pedicle nail.
Fig. 1 to Fig. 2 shows the assembly relation of each parts of a kind of Wicresoft of the present invention wedge lock pedicle nail and spinal rod, and it comprises rivet nut 1, jackscrew 2, locking wedge 3, briquetting 4, spinal rod 5.
Fig. 3 to Fig. 4 shows the structure of rivet nut 1, described rivet nut 1 is provided with screw division 6, for screwing in spinal vertebral, the upper end of described screw division 6 is provided with nail seat 7, the side of described nail seat 7 is provided with through spinal rod hole 8 and holds nail, and the top of described nail seat 7 is provided with nail silk hole 9, and described top wire hole 9 communicates with spinal rod hole 8, the inwall in described nail silk hole 9 is provided with two open slots 10, rotates rivet nut 1 for coordinating special spanner and places described briquetting 4 and two locking wedges 3.
Fig. 5 shows the structure of locking wedge 3, the bottom of described locking wedge 3 is provided with locking wedge inclined-plane 11, spinal rod 5 is locked for coordinating briquetting inclined-plane 15 in described locking wedge inclined-plane 11, the top of described locking wedge 3 is provided with wedge handle 12, the end face of described wedge handle 12 is set to plane, and described wedge handle 12 is provided with the syndetons such as barb 13 or screw thread for retracting locking wedge 3.
Fig. 6 shows the structure of briquetting 4, described briquetting 4 is provided with the arc groove 14 under shed, the arc surface of described arc groove 14 requires to coordinate with the face of cylinder of spinal rod 5, and the epimere in described arc groove 14 liang of outsides is provided with two briquetting inclined-planes 15, hypomere is provided with two guide ledges 16.
First screw division 6 is screwed in spinal vertebral during use, again curved good spinal rod 5 is inserted spinal rod hole 8, then successively briquetting 4 and two locking wedges 3 are put into two open slots 10, and the arc groove 14 of briquetting 4 is pushed into spinal rod 5, fitted in locking wedge inclined-plane 11 and briquetting inclined-plane 15, screw in jackscrew 2 again and by compressing locking wedge 3 and briquetting 4 by locking firm for spinal rod 5, this Wicresoft's wedge lock pedicle nail have employed tapered ramp pressurization anti-loosening locking, there is larger coupling mechanism force and locking power, because this enhancing the steadiness of spinal operation, thus effectively can improve the success rate of operation.
Claims (4)
1. Wicresoft's wedge lock pedicle nail, comprise rivet nut (1), jackscrew (2), briquetting (4), described rivet nut (1) is provided with screw division (6), the upper end of described screw division (6) is provided with nail seat (7), the side of described nail seat (7) is provided with through spinal rod hole (8), the top of described nail seat (7) is provided with nail silk hole (9), described briquetting (4) is provided with the arc groove (14) under shed, it is characterized in that the epimere outside described arc groove (14) two is provided with two briquetting inclined-planes (15), hypomere outside described arc groove (14) two is provided with two guide ledges (16), described a kind of Wicresoft wedge lock pedicle nail also comprises locking wedge (3), the bottom of described locking wedge (3) is provided with locking wedge inclined-plane (11), described locking wedge inclined-plane (11) locks spinal rod (5) for coordinating briquetting inclined-plane (15), the top of described locking wedge (3) is provided with wedge handle (12), the inwall of described nail silk hole (9) is provided with two open slots (10) and rotates rivet nut for coordinating special spanner and place described briquetting (4) and two locking wedges (3).
2. a kind of Wicresoft wedge lock pedicle nail according to claim 1, is characterized in that the end face of described wedge handle (12) is plane.
3. a kind of Wicresoft wedge lock pedicle nail according to claim 1, is characterized in that described wedge handle (12) is provided with the syndetons such as barb (13) or screw thread and is used for retracting locking wedge (3).
4. a kind of Wicresoft wedge lock pedicle nail according to claim 1, is characterized in that the anti-loosening locking mode that the locking of spinal rod (5) be have employed to tapered ramp pressurization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410064129.9A CN103784187B (en) | 2014-02-19 | 2014-02-19 | A kind of Wicresoft wedge lock pedicle nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410064129.9A CN103784187B (en) | 2014-02-19 | 2014-02-19 | A kind of Wicresoft wedge lock pedicle nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103784187A CN103784187A (en) | 2014-05-14 |
| CN103784187B true CN103784187B (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410064129.9A Active CN103784187B (en) | 2014-02-19 | 2014-02-19 | A kind of Wicresoft wedge lock pedicle nail |
Country Status (1)
| Country | Link |
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| CN (1) | CN103784187B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241127A (en) * | 1996-12-20 | 2000-01-12 | 托马斯·T·海德尔 | Pedicle screw system for osteosynthesis |
| US6113601A (en) * | 1998-06-12 | 2000-09-05 | Bones Consulting, Llc | Polyaxial pedicle screw having a loosely coupled locking cap |
| CN101198284A (en) * | 2005-04-25 | 2008-06-11 | 新特斯有限责任公司 | Bone anchor with locking cap and method of spinal fixation |
| CN102164551A (en) * | 2008-07-24 | 2011-08-24 | 英格纽姆股份公司 | Locking mechanism with two-piece washer |
| CN202637080U (en) * | 2012-07-06 | 2013-01-02 | 常州市康辉医疗器械有限公司 | Minimally invasive hollow pedicle screw |
| CN202821566U (en) * | 2012-07-06 | 2013-03-27 | 常州市康辉医疗器械有限公司 | Novel universal vertebral pedicle screw |
| CN203710116U (en) * | 2014-02-19 | 2014-07-16 | 山东航维骨科医疗器械股份有限公司 | Wedge-shaped minimally-invasive locking pedicle screw |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2855392B1 (en) * | 2003-05-28 | 2005-08-05 | Spinevision | CONNECTION DEVICE FOR SPINAL OSTESYNTHESIS |
| US7766945B2 (en) * | 2004-08-10 | 2010-08-03 | Lanx, Inc. | Screw and rod fixation system |
-
2014
- 2014-02-19 CN CN201410064129.9A patent/CN103784187B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241127A (en) * | 1996-12-20 | 2000-01-12 | 托马斯·T·海德尔 | Pedicle screw system for osteosynthesis |
| US6113601A (en) * | 1998-06-12 | 2000-09-05 | Bones Consulting, Llc | Polyaxial pedicle screw having a loosely coupled locking cap |
| CN101198284A (en) * | 2005-04-25 | 2008-06-11 | 新特斯有限责任公司 | Bone anchor with locking cap and method of spinal fixation |
| CN102164551A (en) * | 2008-07-24 | 2011-08-24 | 英格纽姆股份公司 | Locking mechanism with two-piece washer |
| CN202637080U (en) * | 2012-07-06 | 2013-01-02 | 常州市康辉医疗器械有限公司 | Minimally invasive hollow pedicle screw |
| CN202821566U (en) * | 2012-07-06 | 2013-03-27 | 常州市康辉医疗器械有限公司 | Novel universal vertebral pedicle screw |
| CN203710116U (en) * | 2014-02-19 | 2014-07-16 | 山东航维骨科医疗器械股份有限公司 | Wedge-shaped minimally-invasive locking pedicle screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103784187A (en) | 2014-05-14 |
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