CN103784188A - Adjustable elastic interspinous dynamic propping-open device - Google Patents
Adjustable elastic interspinous dynamic propping-open device Download PDFInfo
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- CN103784188A CN103784188A CN201410082234.5A CN201410082234A CN103784188A CN 103784188 A CN103784188 A CN 103784188A CN 201410082234 A CN201410082234 A CN 201410082234A CN 103784188 A CN103784188 A CN 103784188A
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- square shaft
- sliding block
- blocking plate
- groove
- right baffle
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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
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
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- Orthopedic Medicine & Surgery (AREA)
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- Heart & Thoracic Surgery (AREA)
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Abstract
The invention provides an adjustable elastic interspinous dynamic propping-open device which comprises a left blocking plate and a right blocking plate. A fixing casing is arranged between the left blocking plate and the right blocking plate, a stopper block is arranged in the right blocking plate, a square shaft is arranged in the left blocking plate, a sliding block is arranged between the stopper block and the square shaft and divided into an upper portion and a lower portion, a sharp-shaped groove is reserved between the upper sliding block and the lower sliding block and corresponds to a groove in the square shaft, the convex portions of the upper sliding block and the lower sliding block are provided with springs and connected with guide pins, the guide pins are connected with limiting plates, positioning blocks are arranged on the limiting plates, ejector pins are arranged in the positioning blocks, the guide pins and the limiting plates, an adjusting rod is arranged in a square shaft inner hole, and the front end of the adjusting rod is located in the groove between the sliding block and the square shaft. By adopting the flexible design, rigid impact caused by direct skeleton contact in the surgery process and postoperative rehabilitation process is avoided while propping for pressure reduction, interspinous bone fracture and other complication are decreased, the operation is simple, tissue injury is decreased to the most extent, and the surgery reversibility can be greatly improved.
Description
Technical field
The invention belongs to and should be medical instruments field, relate in particular to dynamic device for spreading between a kind of adjustable elasticity spinous process.
Background technology
Lumbar spinal stenosis is commonly encountered diseases and frequently-occurring disease, and its cause of disease is that lumbar vertebra tube chamber footpath is narrow, and main manifestations is low back pain, and when lower limb are stood or walked, fiber crops are swollen aches and intermittent claudication.At present main means of state's internal therapy lumbar spinal stenosis or to cut and to expand canalis spinalis, reach spinal canal decompression object.In the method operative treatment process, medical worker's complicated operation, performs the operation long compared with the time, not only damages spinal tissues, destroys its stability, also easily makes nerve suffer damage, poor reliability; Patient's hands postoperative bedrest is long, expense is many, is prone to multiple complications simultaneously.Recently, use in the world spinal column dynamic stability theory, invent multiple device for spreading, between Lumbar Vertebral Canal, implant device for spreading, the principle of rigid staybolt opening apparatus is that the power that struts that inner fixing device the produces sections that can make to perform the operation is protruding after occurring relatively in spinous process, make the ligamenta flava of infolding open to reduce to intraspinal intrusion, the power that longitudinally struts producing between vertebral body can increase intervertebral foramina diameter, thereby alleviate the regression between adjacent vertebral bodies, realize the object that reduces Lumbar Vertebral Canal pressure, expands lumbar vertebra tube chamber footpath and decompression, operation process is simple, tissue injury is little, few intercurrent disease.But external device for spreading price comparison costliness, easily produces and comes off or the complication such as fracture of spinous process occur.
Summary of the invention
The present invention provides dynamic device for spreading between a kind of adjustable elasticity spinous process in order to address the above problem.
Technical scheme of the present invention is achieved in that dynamic device for spreading between adjustable elasticity spinous process, comprise right baffle-plate and right baffle plate, between right baffle-plate and right baffle plate, be provided with set casing, in right baffle plate, be provided with block, in right baffle-plate, be provided with square shaft, between block and square shaft, be provided with slide block, slide block is divided into upper and lower two parts, between upper sliding block, be provided with pointed groove, pointed groove is corresponding with the groove on square shaft, upper sliding block bossing is equipped with spring, and be connected with guide finger, guide finger is connected with limiting plate, limiting plate is provided with locating piece, locating piece, in the middle of guide finger and limiting plate, be provided with thimble, square shaft endoporus is provided with adjusting rod, in the groove of adjusting rod front end between slide block and square shaft,
Preferably, the adjustable stroke of both sides thimble is >=5mm that the power that flexibly connects of two springs is 5～15N.
The invention has the beneficial effects as follows: the present invention adopts flexible design, when strutting decompression, avoid operation process and directly contacted with skeleton the rigid shock bringing in post-operative recovery process, reducing the complication such as fracture of spinous process occurs, simple to operate, reduced to greatest extent tissue injury, the reversibility that makes to perform the operation increases greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is generalized section of the present invention.
Part explanation: 1, set casing, 2, adjusting rod, 3, right baffle-plate, 4, thimble, 5, locating piece, 6, right baffle plate, 7, slide block, 8, square shaft, 9, limiting plate, 10, guide finger, 11, block, 12, spring.
The specific embodiment
For Comprehension and Implementation better, below in conjunction with accompanying drawing, the invention will be further described: dynamic device for spreading between adjustable elasticity spinous process, comprise right baffle-plate 3 and right baffle plate 6, between right baffle-plate 3 and right baffle plate 6, be provided with set casing 1, in right baffle plate 6, be provided with block 11, in right baffle-plate 3, be provided with square shaft 8, between block 11 and square shaft 8, be provided with slide block 7, slide block 7 is divided into upper and lower two parts, between upper sliding block 7, be provided with pointed groove, pointed groove is corresponding with the groove on square shaft 8, upper sliding block 7 bossings are equipped with spring 12, and be connected with guide finger 10, guide finger 10 is connected with limiting plate 9, limiting plate 9 is provided with locating piece 5, locating piece 5, guide finger 10 and the middle thimble 4 that is provided with of limiting plate 9, square shaft 8 endoporus are provided with adjusting rod 2, in the groove of adjusting rod 2 front ends between slide block 7 and square shaft 8.
In the time that use is of the present invention, first the device body except right baffle-plate 3 is put between spinous process, the placement location of adjusting device and angle, after adjusting, adjusting rod 2 is regulated with specific purpose tool, adjusting rod 2 is moved forward, adjusting rod 2 front ends are pointed, move forward along the pointed groove between groove and two slide blocks 7 of square shaft 8, upper sliding block 7 is strutted, upper sliding block 7 compresses the spring 12 at two ends, make guide finger 10 drive thimble 4 outwards to move, by thimble 4 and upper and lower two ends skeletal fixation, finally that right baffle-plate 3 is fixing along square shaft 8, realize automatically locking of whole device, firm with the skeleton constraint at upper and lower two ends.
Between adjustable elasticity spinous process, dynamically device for spreading need to satisfied working range be: adjustable dimension >=5mm (prolonging spinal column direction); Flexibly connect power: 5～15N.
The present invention, by the adjusting to adjusting rod, can realize both sides thimble 5mm adjustment stroke, realizes the fixing and locking of optional position in 5mm simultaneously; By the calculating to spring and experimental verification, two ends spring force effectively can be controlled between 5～15N, reduce the impact to patient bone of installation initial stage or strenuous exercise, reduce patient's misery; Two side shields and slide block are selected polyimide material, the self-lubricating effect can increase adjusting time and the facility of installation; Other materials all adopts titanium material, when the rigidity of assurance device, realizes effectively affine with human body, is convenient to patient's recovery.
The present invention adopts flexible design, when strutting decompression, has avoided operation process and has directly contacted with skeleton the rigid shock bringing in post-operative recovery process, reducing the complication such as fracture of spinous process occurs, simple to operate, reduce to greatest extent tissue injury, the reversibility that makes to perform the operation increases greatly.
The foregoing is only better case study on implementation of the present invention, be not used in and limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should belong to the scope of the claims of the present invention.
Claims (2)
1. dynamic device for spreading between adjustable elasticity spinous process, comprise right baffle-plate (3) and right baffle plate (6), between right baffle-plate (3) and right baffle plate (6), be provided with set casing (1), it is characterized in that being provided with in right baffle plate (6) block (11), in right baffle-plate (3), be provided with square shaft (8), between block (11) and square shaft (8), be provided with slide block (7), slide block (7) is divided into upper and lower two parts, upper sliding block is provided with pointed groove between (7), pointed groove is corresponding with the groove on square shaft (8), upper sliding block (7) bossing is equipped with spring (12), and be connected with guide finger (10), guide finger (10) is connected with limiting plate (9), limiting plate (9) is provided with locating piece (5), locating piece (5), guide finger (10) and the middle thimble (4) that is provided with of limiting plate (9), square shaft (8) endoporus is provided with adjusting rod (2), adjusting rod (2) front end is positioned at the groove between slide block (7) and square shaft (8).
2. dynamic device for spreading between adjustable elasticity spinous process according to claim 1, is characterized in that the adjustable stroke of both sides thimble (4) is >=5mm, and the power that flexibly connects of two springs (12) is 5～15N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082234.5A CN103784188B (en) | 2014-03-07 | 2014-03-07 | Dynamic device for spreading between adjustable elasticity spinous process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082234.5A CN103784188B (en) | 2014-03-07 | 2014-03-07 | Dynamic device for spreading between adjustable elasticity spinous process |
Publications (2)
| Publication Number | Publication Date |
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| CN103784188A true CN103784188A (en) | 2014-05-14 |
| CN103784188B CN103784188B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410082234.5A Expired - Fee Related CN103784188B (en) | 2014-03-07 | 2014-03-07 | Dynamic device for spreading between adjustable elasticity spinous process |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1246041A (en) * | 1997-01-02 | 2000-03-01 | 圣弗朗西斯医药技术公司 | Spine distraction implant and method |
| CN201295279Y (en) * | 2008-11-10 | 2009-08-26 | 创生医疗器械(江苏)有限公司 | Interspinal strutting device |
| CN201727573U (en) * | 2010-07-31 | 2011-02-02 | 李照文 | Multidirectional dynamic stabilizer for spinal joints |
| CN102137628A (en) * | 2008-08-28 | 2011-07-27 | 斯恩蒂斯有限公司 | Bone-derived interspinous spacer |
| CN201920883U (en) * | 2011-01-18 | 2011-08-10 | 山东威高骨科材料有限公司 | Spinous process retainer |
| WO2011141869A1 (en) * | 2010-05-11 | 2011-11-17 | Meddev Sagl | Interspinal retractor device |
| CN102448390A (en) * | 2009-03-27 | 2012-05-09 | 财团法人工业技术研究院 | Spinal dynamic stabilization device |
| CN102781373A (en) * | 2009-12-31 | 2012-11-14 | Ldr医疗公司 | Anchoring device, intervertebral implant and implantation instrument |
| CN203829024U (en) * | 2014-03-07 | 2014-09-17 | 鞠传广 | Adjustable elastic interspinous dynamic distraction device |
-
2014
- 2014-03-07 CN CN201410082234.5A patent/CN103784188B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1246041A (en) * | 1997-01-02 | 2000-03-01 | 圣弗朗西斯医药技术公司 | Spine distraction implant and method |
| CN102137628A (en) * | 2008-08-28 | 2011-07-27 | 斯恩蒂斯有限公司 | Bone-derived interspinous spacer |
| CN201295279Y (en) * | 2008-11-10 | 2009-08-26 | 创生医疗器械(江苏)有限公司 | Interspinal strutting device |
| CN102448390A (en) * | 2009-03-27 | 2012-05-09 | 财团法人工业技术研究院 | Spinal dynamic stabilization device |
| CN102781373A (en) * | 2009-12-31 | 2012-11-14 | Ldr医疗公司 | Anchoring device, intervertebral implant and implantation instrument |
| WO2011141869A1 (en) * | 2010-05-11 | 2011-11-17 | Meddev Sagl | Interspinal retractor device |
| CN201727573U (en) * | 2010-07-31 | 2011-02-02 | 李照文 | Multidirectional dynamic stabilizer for spinal joints |
| CN201920883U (en) * | 2011-01-18 | 2011-08-10 | 山东威高骨科材料有限公司 | Spinous process retainer |
| CN203829024U (en) * | 2014-03-07 | 2014-09-17 | 鞠传广 | Adjustable elastic interspinous dynamic distraction device |
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| CN103784188B (en) | 2015-08-19 |
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Granted publication date: 20150819 Termination date: 20190307 |