CN1748655A - Front self locking fixing pin plate for lumbar vertebra - Google Patents
Front self locking fixing pin plate for lumbar vertebra Download PDFInfo
- Publication number
- CN1748655A CN1748655A CN 200510057332 CN200510057332A CN1748655A CN 1748655 A CN1748655 A CN 1748655A CN 200510057332 CN200510057332 CN 200510057332 CN 200510057332 A CN200510057332 A CN 200510057332A CN 1748655 A CN1748655 A CN 1748655A
- Authority
- CN
- China
- Prior art keywords
- screw
- fixing head
- hold
- nail
- circular arc
- 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.)
- Granted
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
本发明涉及一种腰椎体的内固定器件，特别是一种腰椎体前方自锁固定钉板，包括有固定板和固定螺钉，其特点是同定板沿轴向为与腰椎前凸相一致的圆弧形，固定板沿横向为与腰椎体前方弧形表面相一致的圆弧形，固定板的轴向两端各设有三个呈等边三角形分布的带有沉头的螺纹孔，其中两个螺纹孔与横向边平行，每一个螺纹孔中设置固定螺钉，固定螺钉的钉头顶部的外圆周上开设有一圆弧形切口，三个螺纹孔间的中心还设有沉头锁定螺钉孔，锁定螺钉孔中有钉头为圆盘状的锁定螺钉，锁定螺钉的圆盘状钉头可与三个固定螺钉的钉头顶部的圆弧形切口切合。本发明结构简单，固定强度高，不易松动，安全性好，手术创伤小。
The invention relates to an internal fixation device for the lumbar vertebral body, in particular to a self-locking fixed nail plate in front of the lumbar vertebral body, which includes a fixed plate and a fixed screw, and is characterized in that the fixed plate is in the same circle as the lumbar lordosis along the axial direction. Arc-shaped, the fixed plate is circular arc-shaped in the transverse direction consistent with the arc surface in front of the lumbar vertebral body, and the axial ends of the fixed plate are respectively provided with three threaded holes with countersunk heads distributed in equilateral triangles, two of which are The threaded holes are parallel to the lateral sides, and a fixing screw is arranged in each threaded hole. An arc-shaped cutout is provided on the outer circumference of the top of the nail head of the fixing screw, and a countersunk locking screw hole is arranged in the center of the three threaded holes to lock the screw. There are locking screws with disc-shaped nail heads in the screw holes, and the disc-shaped nail heads of the locking screws can fit with the arc-shaped cutouts at the tops of the nail heads of the three fixing screws. The invention has the advantages of simple structure, high fixing strength, not easy to loosen, good safety and small operation trauma.
Description
One, technical field
The invention belongs to medical implants device, relate to a kind of internal fixation device of lumbar vertebra body, particularly a kind of front self locking fixing pin plate for lumbar vertebra.
Two, background technology
The internal fixation of spine technology is sick and wounded basic of treatment spinal column and important techniques means, especially in the sick and wounded treatment of lumbar vertebra.The internal fixation device that is used for lumbar vertebra at present mainly contains lumbar vertebral posterior (or rear) immobilising device, lumbar vertebra side side immobilising device and lumbar vertebra body the place ahead immobilising device.
What use always at present in lumbar vertebral posterior (or rear) immobilising device is various radix of vertebra screw solid state devices, by being connected and fixed the lumbar vertebra body between screw and the rod.This class immobilising device has following defective: (1) installs and fixes muscle and the ligament that the lumbar vertebra rear need extensively be peeled off and cut off to device, and often need excise lumbar vertebra rear structures such as vertebral plate, articuli intervertebrales and spinous process because of the needs of spinal cord and nerve decompression, wound is big and extensive, hemorrhage many, on average about 1000ml; (2) the screw location technology of installing require high, if any deflection then easy damaged spinal cord, nerve root and dural sac or fixing unstable; (3) be support fixation to lumbar vertebra front pillar and center pillar, the nail rod meets with stresses big and constant intensity is limited, is prone to broken nail, disconnected rod and fixing complication such as loosening; (4) rear and proceeds posterolateral decompression are implemented in the compressing of spinal cord and nerve root, easily caused delayed ischemic neurological deficits to increase the weight of or the generation of complication such as obstacle fully.
In the lumbar vertebra side side immobilising device, commonly used at present is vertebral body side nail-plate immobilising device and single nail rod and the excellent immobilising device of two nails.This class immobilising device has following defective: (1) installs multilamellar muscle and the ligament that this class immobilising device needs extensively to cut off the abdominal part outside and side, back, sometimes also must excise the next rib, operation technique complexity, technical difficulty height, the time is long, wound is big, and is hemorrhage many, on average is about 1200ml; (2) this class fixed system is only applicable to the sick and wounded operation of waist 1 vertebra to waist 3 vertebras, and is difficult to carry out fixing to waist 4 to sacrum 1 vertebra because of the occupy-place of blocking with the total blood vessel of ilium of ala of ilium; (3) the vertebral body side appears owing to need widely, and other vegetative nerve of easy damaged lumbar vertebra and lumbar plexus are done and branch, and causes the complication of corresponding delayed ischemic neurological deficits; (4) owing to one-sided enforcement operation technique, thus be difficult to carry out the decompression of offside nerve root canal, and be difficult to remove the offside lumbal vertebra.
Alternatively clinically at present in the immobilising device of lumbar vertebra body the place ahead mainly contain two kinds of immobilising devices.A kind of fixing for long bone of limbs used the nail-plate immobilising device, and its defective is: (1) its design is based on long bone of limbs and fixes, and the screw thread design of its nail is not suitable for the lumbar vertebra spongy bone, and the form different design of plate closes the anatomic form of lumbar vertebra; (2) Ding installation is positioned on the axis of plate substantially, and antitorque commentaries on classics and anti-side stress intensity are poor; (3) joint portion latch-up-free structure between nail and the plate to making the constant intensity deficiency, is prone to the nail-plate loose shift and deviates from, and the danger that causes mortality complication such as the preceding trunk (ventral aorta, postcava and the total blood vessel of ilium etc.) of vertebra breaks is arranged.The another kind of Elysee-watcher of being uses the PACH nail-plate immobilising device of (world) medical device company, and its defective is: (1) is only applicable to the intervertebral fixation of waist 4-5 and waist 5-sacrum 1; (2) implemented to fix by two cover nail-plates, every cover nail-plate is fixed in hypocentrum by two pieces of screws with plate, because of two cover nail-plates do not have connection each other, so the undercapacity of its antitorque turning stress; (3) joint portion does not have stable latch-up structure between nail and the plate, and is support fixation, so cause the constant intensity deficiency of whole system.
Three, summary of the invention
The present invention is intended to overcome the technological deficiency that existing lumbar vertebra immobilising device exists, and provides a kind of simple in structure, the constant intensity height, is difficult for the front self locking fixing pin plate for lumbar vertebra loosening, that safety is good, operation wound is little.
The present invention adopts such technical scheme: a kind of front self locking fixing pin plate for lumbar vertebra, include fixing head and hold-down screw, it is characterized in that fixing head is and the corresponding to circular arc of kurtorachic vertically, fixing head is along laterally being and the corresponding to circular arc of lumbar vertebra body the place ahead curved surfaces, the axial two ends of fixing head respectively are provided with three and are the screwed hole that has countersunk head that equilateral triangle distributes, wherein two screwed holes are parallel with widthwise edge, in each screwed hole hold-down screw is set, offer a circular arc otch on the excircle at the ailhead top of hold-down screw, center between three screwed holes also is provided with the countersunk head screw hole, it is discoid lock screw that ailhead is arranged in the screw hole, and the discoid ailhead of lock screw can suit with the circular arc otch at the ailhead top of three hold-down screws.
By front self locking fixing pin plate for lumbar vertebra provided by the invention, simple in structure, be provided with screw at the fixing head two ends, hold-down screw is arranged in it, between hold-down screw and fixing head all with thread lock, between the hold-down screw of every end, lock screw is arranged, when the lumbar vertebra body is fixed, the plectane kayser of the locked head of screw of countersunk head cylindrical circular arc otch of three of every end hold-down screws on the fixing head, hold-down screw can not become flexible, realize this fixedly nail-plate the safety of the fixing of lumbar vertebra body high strength and height is fixed.Because operation of the present invention is installed in human body, be to appear lumbar vertebra the place ahead by peritoneal cavity or extraperitoneal space, thus need not extensively to cut off muscle, and have the advantage that wound is little, postoperative patient recovers soon and reduce greatly complication rates such as nerve injury.The present invention can be widely used in the fusion of treatment lumbar vertebra fracture, degenerative lumbar disease, lumbar spondylolisthesis, lumbar vertebra deformity etc.
Four, description of drawings
The present invention has following accompanying drawing:
Fig. 1 is a front view of the present invention;
Fig. 2 is that the B of Fig. 1 is to view;
Fig. 3 is that the A of Fig. 1 is to view;
Fig. 4 is the sketch map of hold-down screw;
Fig. 5 is the sketch map of lock screw.
Five, the specific embodiment
Description embodiment of the present invention with reference to the accompanying drawings.As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, a kind of front self locking fixing pin plate for lumbar vertebra, include fixing head 1 and hold-down screw 3, fixing head 1 is and the corresponding to circular arc of kurtorachic vertically, fixing head is along laterally being and the corresponding to circular arc of lumbar vertebra body the place ahead curved surfaces, the axial two ends of fixing head 1 respectively are provided with three and are the screwed hole that has countersunk head 2 that equilateral triangle distributes, wherein two screwed holes are parallel with widthwise edge, hold-down screw 3 is set in each screwed hole, offer a circular arc otch on the excircle at the ailhead top of hold-down screw, center between three screwed holes also is provided with countersunk head screw hole 4, it is discoid lock screw 5 that ailhead is arranged in the screw hole, and the discoid ailhead of lock screw 5 can suit with the circular arc otch at the ailhead top of three hold-down screws 3.Fixing head 1 is 25cm with the corresponding to circular arc radius of kurtorachic vertically, is 3.5cm along horizontal and the corresponding to circular arc radius of lumbar vertebra the place ahead curved surfaces.The middle part of fixing head 1 also is provided with a bar shaped vertically and observes groove 6.Hold-down screw 3 is provided with fixing head sticking department 3-1 and bone fixed part 3-2, the ailhead of hold-down screw 3 is fixing head sticking department 3-1, the nail tail is bone fixed part 3-2, the body of rod 3-3 of fixing head sticking department 3-1 is slightly larger than the body of rod 3-4 of bone fixed part 3-2, the major diameter of thread of fixing head sticking department 3-1 and bone fixed part 3-2 equates, offers a circular arc otch 3-5 on the excircle at the top of fixing head sticking department 3-1.
Claims (3)
1, a kind of front self locking fixing pin plate for lumbar vertebra, include fixing head (1) and hold-down screw (3), it is characterized in that fixing head (1) is and the corresponding to circular arc of kurtorachic vertically, fixing head is along laterally being and the corresponding to circular arc of lumbar vertebra body the place ahead curved surfaces, the axial two ends of fixing head (1) respectively are provided with three and are the screwed hole that has countersunk head (2) that equilateral triangle distributes, wherein two screwed holes are parallel with widthwise edge, hold-down screw (3) is set in each screwed hole, offer a circular arc otch on the excircle at the ailhead top of hold-down screw, center between three screwed holes also is provided with countersunk head screw hole (4), it is discoid lock screw (5) that ailhead is arranged in the screw hole, and the discoid ailhead of lock screw (5) can suit with the circular arc otch at the ailhead top of three hold-down screws (3).
2, push away fixedly nail-plate of body front self locking by the described waist of claim 1, it is characterized in that the middle part of described fixing head (1) also is provided with bar shaped observation groove (6) vertically.
3, push away fixedly nail-plate of body front self locking by claim 1 or 2 described waists, it is characterized in that described hold-down screw (3) is provided with fixing head sticking department (3-1) and bone fixed part (3-2), the ailhead of hold-down screw (3) is fixing head sticking department (3-1), the nail tail is bone fixed part (3-2), the body of rod (3-3) of fixing head sticking department (3-1) is slightly larger than the body of rod (3-4) of bone fixed part (3-2), the major diameter of thread of fixing head sticking department (3-1) and bone fixed part (3-2) equates, offers a circular arc otch (3-5) on the excircle at the top of fixing head sticking department (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100573324A CN100349552C (en) | 2005-10-19 | 2005-10-19 | Front self locking fixing pin plate for lumbar vertebra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100573324A CN100349552C (en) | 2005-10-19 | 2005-10-19 | Front self locking fixing pin plate for lumbar vertebra |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1748655A true CN1748655A (en) | 2006-03-22 |
| CN100349552C CN100349552C (en) | 2007-11-21 |
Family
ID=36604437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100573324A Expired - Lifetime CN100349552C (en) | 2005-10-19 | 2005-10-19 | Front self locking fixing pin plate for lumbar vertebra |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100349552C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972162A (en) * | 2010-10-21 | 2011-02-16 | 李明 | Self-locking acetabular posterior-wall posterior-column anatomical steel plate |
| CN102647953A (en) * | 2009-11-27 | 2012-08-22 | 新特斯有限责任公司 | Plating concept for distal radial fractures |
| USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69839011T2 (en) * | 1997-02-11 | 2009-01-08 | Warsaw Orthopedic, Inc., Warsaw | DEVICE FOR ATTACHING SKELETAL PANELS |
| US6533786B1 (en) * | 1999-10-13 | 2003-03-18 | Sdgi Holdings, Inc. | Anterior cervical plating system |
| CN2393492Y (en) * | 1999-11-10 | 2000-08-30 | 金大地 | Inner fixator in front of dorsal and lumbar vertebras |
| CN2393490Y (en) * | 1999-11-10 | 2000-08-30 | 金大地 | Inner fixator in front of cervical vertebra |
| CN1216578C (en) * | 2000-12-28 | 2005-08-31 | 英属维京群岛商冠亚股份有限公司 | Vertebra fixing reductor |
| CN2474097Y (en) * | 2001-04-12 | 2002-01-30 | 李永恒 | Self locking device for cervical vertebra |
| US6890335B2 (en) * | 2001-08-24 | 2005-05-10 | Zimmer Spine, Inc. | Bone fixation device |
| CN2543495Y (en) * | 2002-02-05 | 2003-04-09 | 傅强 | Novel cervical vertebrae front self-locking internal fixator |
-
2005
- 2005-10-19 CN CNB2005100573324A patent/CN100349552C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647953A (en) * | 2009-11-27 | 2012-08-22 | 新特斯有限责任公司 | Plating concept for distal radial fractures |
| US9370386B2 (en) | 2009-11-27 | 2016-06-21 | DePuy Synthes Products, Inc. | Plating concept for distal radial fractures |
| CN101972162A (en) * | 2010-10-21 | 2011-02-16 | 李明 | Self-locking acetabular posterior-wall posterior-column anatomical steel plate |
| USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
| USD798455S1 (en) | 2014-10-08 | 2017-09-26 | Nuvasive, Inc. | Anterior cervical bone plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100349552C (en) | 2007-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11730462B2 (en) | Orthopedic tools for implantation | |
| US10080590B2 (en) | Spinal stabilization system and methods of use | |
| US7524323B2 (en) | Subcutaneous support | |
| US6228085B1 (en) | Bone fixation system | |
| EP1737369B1 (en) | Support for bone | |
| US8623062B2 (en) | System and method to stablize a spinal column including a spinolaminar locking plate | |
| US5624442A (en) | Transverse link for use with a spinal implant system | |
| AU690179B2 (en) | Transverse link for spinal implant system | |
| US8430929B2 (en) | Spine reduction and stabilization device | |
| US8118737B2 (en) | Retractor device for cervical spinal fusion | |
| US8231680B2 (en) | Anterior cervical instrumentation systems, methods and devices | |
| US10687861B2 (en) | Systems and methods for spinal compression, distraction, and fixation | |
| WO2007103081A2 (en) | Asymmetrical cervical fusion plate and method for use | |
| US20090292308A1 (en) | Spinal fixation system | |
| US9095378B2 (en) | Spinal stabilization system | |
| WO2007075715A2 (en) | Anterior adherent thoracolumbar spine plate | |
| CN1748655A (en) | Front self locking fixing pin plate for lumbar vertebra | |
| US20160128734A1 (en) | Threaded Setscrew Crosslink |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING FWS MEDICAL INSTRUMENT CO., LTD. Free format text: FORMER OWNER: NO.1 ATTACHED HOSPITAL, NO.3 MILITARY MEDICAL COLLEGE PLA. Effective date: 20150210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400038 SHAPINGBA, CHONGQING TO: 401336 NANAN, CHONGQING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150210 Address after: 401336 Nan'an District of Chongqing City Economic Development Zone No. 11 Jiangqiao Road, room wall Patentee after: CHONGQING FWS MEDICAL DEVICE CO.,LTD. Address before: Chongqing city Shapingba street 400038 gaotanyan No. 29 Patentee before: THE FIRST AFFILIATED HOSPITAL, THIRD MILITARY MEDICAL University PLA |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071121 |