CN101810509A - Spreader for unilateral expansive open-door vertebra board - Google Patents
Spreader for unilateral expansive open-door vertebra board Download PDFInfo
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- CN101810509A CN101810509A CN 201010157483 CN201010157483A CN101810509A CN 101810509 A CN101810509 A CN 101810509A CN 201010157483 CN201010157483 CN 201010157483 CN 201010157483 A CN201010157483 A CN 201010157483A CN 101810509 A CN101810509 A CN 101810509A
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- spreader
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- dilator
- door
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Abstract
The invention relates to a spreader for a unilateral expansive open-door vertebra board, which can effectively prop the vertebra board open and prevent the vertebra board from slipping from the spreader. The spreader comprises a vertebral body spreader; an angle between a spreader mouth and a handle in the vertebral body spreader is more than 90 degrees; a spreading head of the spreader mouth has a groove structure; and the groove is provided with anti-slip teeth inside. The spreader has the advantages that: the opening and closing modes of the spreader mouth of the spreader are changed, so that the angle between the force application direction of the spreader mouth of the spreader and the force application direction of the hand of an operator is kept between 90 to 120 degrees; therefore, the arms of the operator can operate at the most comfortable angle when the spreader is used, and the stability of the arms of the operator and the safety of the operation are improved; and the spreading head of the spreader mouth has the groove structure and the groove is provided with an anti-slip teeth inside, so the spreader fundamentally ensures that the spread vertebra board cannot slip from the groove of the spreading head, the safety of the operation is ensured, and the risk and operability of propping the lamina open are greatly reduced.
Description
Technical field
The present invention relates to a kind of can either effectively vertebral plate being strutted, can prevent the spreader for unilateral expansive open-door vertebra board of vertebral plate slippage from dilator again effectively, belong to medical apparatus and instruments and make the field.
Background technology
CN201333070Y, title " a kind of vertebral body dilator of anterior cervical vertebrae ".It is to connect the dilator shank by dilator tooth portion by the dilator connecting portion, establishes the set bolt bar between the shank bipod, and shank opens and is provided with tension elastomeric sheet composition between bipod.Vertebral body dilator the place ahead of this anterior cervical vertebrae is the tooth portion of the anti-skidding processing of grid, the rear installs and fixes bolt, the dilator connecting portion has the angle of 120-170 degree, can easily the tooth that struts in the place ahead be inserted between cervical vertebral body, strut the operation of pincers portion by the rear, safe ready finish the operation that struts between vertebral body.Its weak point: the one, the opening and closing of dilator tooth portion and shank hold with a firm grip and to unclamp the direction of pairing power identical, make the patient in the process of using, need significantly open arm and operate, influence the stationarity of arm, bring evitable risk to operation; The 2nd, this dilator support mouth is not owing to there is groove structure, can only be used in the part spinal surgery, in the anterior cervical decompression operation, and can't be used in the posterior approach treatment of multi-segmental cervical spondylosis or spinal canal stenosis, because multi-segmental cervical spondylosis or spinal canal stenosis need vertebral plate is strutted (opening) in the operative treatment process, in case vertebral plate is opened with dilator, just necessary position and lock, otherwise in a single day phenomenon that the vertebral plate after opening in operation process comes off from dilator, its vertebral plate is with coup injury nervous system and nervus centralis; The 3rd, monomer struts and easily causes the door-hinge side over-stressed and open in the process that vertebral plate struts, need be support with the side lateral mass that opens the door, form the lever strength that upwards levers up, and need avoid the interference of muscle on every side in the process of prying and pulling, preceding road dilator can't provide the lever prying and pulling under stopping of stable support point and muscle.
The content of invention
Purpose of design: avoid the weak point in the background technology, design a kind of be applicable to the single open-door canalis spinalis enlarge plastic operation spreader for unilateral expansive open-door vertebra board, reduced risk in the operation process to greatest extent, guaranteed patient's life and healthy.
Design: to achieve these goals, the present invention has made following design: 1, the finger of dilator support mouth and handle exerts oneself that certain angle is arranged between the portion, this angle is good at 90 degree～120 degree, because the palm of dilator support mouth and handle exerts oneself that certain angle is also arranged between the portion, this angle is good at 120 degree～150 degree, the opening and closing of dilator support mouth and handle holds with a firm grip and unclamps pairing power not on identical direction like this, therefore in the process of using, patient's arm can be operated in the angle of the most comfortable, improved the stationarity of patient's arm, accuracy and safety, and avoided stopping of muscle behind the neck, can finish the operation of lever prying and pulling.2, the fastener that dilator is supportted mouth is designed to groove shape structure, and the inner convex platform height of groove is greater than the outer lug boss height, and inner convex platform thickness is greater than outer lug boss thickness.The purpose of doing like this is: it can make the vertebral plate of holding the patient of fastener safety, can make vertebral plate that a stable stress point can be arranged again, guaranteed that vertebral plate can be by the groove slippage, can not damage vertebral plate, can not cause the damage of vertebral plate landing to nerve yet, also in groove, be provided with latticed anti-slop serrations for this reason,, improved safety coefficient to strengthen its frictional force.3, the design of the bottom of dilator handle has anti-skidding stricture of vagina, has increased the frictional force between hands and the dilator handle.
Technical scheme: a kind of spreader for unilateral expansive open-door vertebra board, it comprises the vertebral body dilator, and support mouth in the described vertebral body dilator and the angle between the handle are greater than 90 degree, and the fastener of support mouth is in groove shape structure and the groove and is provided with anti-slop serrations.
The present invention compares with background technology, the one, changed the opening and closing mode of dilator support mouth, make the application of force direction of dilator support mouth and the application of force direction of patient's hands be 90-120 degree angle mutually, therefore in the process of using, patient's arm can be operated in the angle of the most comfortable, improve the stationarity of patient's arm and the safety of operation, and avoided stopping of muscle behind the neck, can finish the operation of lever prying and pulling; The 2nd, the fastener of support mouth is in groove shape structure and the groove and is provided with anti-slop serrations, has guaranteed that fundamentally the vertebral plate that struts can not only not guarantee the safety of patient's operation, and greatly reduce risk and the operability that vertebral plate struts from the landing of fastener further groove.
Description of drawings
Fig. 1 is the main TV structure figure of spreader for unilateral expansive open-door vertebra board; Wherein, the 1st, anti-skidding stricture of vagina, the 2nd, dilator handle, the 3rd, dilator mouth, the 4th, the outer lug boss of fastener groove, the 5th, the inner convex platform of fastener groove, the 6th, fastener, the 7th, anti-slop serrations, the 8th, hold-down nut, the 9th, set bolt bar, the 10th, tension elastomeric sheet, the 11st, dilator connecting portion.
Fig. 2 is the 3-D view of spreader for unilateral expansive open-door vertebra board; Wherein, the 7th, anti-slop serrations.
Fig. 3 is the use principle figure of spreader for unilateral expansive open-door vertebra board.
Fig. 4 is the use sketch map of spreader for unilateral expansive open-door vertebra board; Wherein, A is a vertebral plate, and F is the suffered power of vertebral plate A.
The specific embodiment
Embodiment 1: with reference to accompanying drawing 1-4.A kind of spreader for unilateral expansive open-door vertebra board, it comprises the vertebral body dilator, and support mouth 3 in the described vertebral body dilator and the angle between the handle 2 are greater than 90 degree, and the fastener 6 of support mouth is and is provided with anti-slop serrations 7 in groove shape structure and the groove.Described anti-slop serrations 7 is latticed.That is to say, spreader for unilateral expansive open-door vertebra board is linked to each other with dilator handle 2 by dilator connecting portion 11 by dilator support mouth 3, the lower end of dilator handle 2 is provided with set bolt bar 9, set bolt bar 9 is provided with hold-down nut 8, be provided with tension elastomeric sheet 10 between the dilator handle 2, the fastener 6 of described dilator support mouth 3 is groove shape structure, and be provided with anti-slop serrations 7 in the groove, the inner convex platform height of this groove is greater than the outer lug boss height, and inner convex platform thickness is greater than outer lug boss thickness, the angle of support mouth 3 and handle 2 is in a plane, and the exert oneself angle of portion of support mouth 3 and the finger of handle 2 is good at the 90-120 degree, and the exert oneself angle of portion of support mouth 3 and the palm of handle 2 is good at the 120-150 degree.The principle that the present invention adopts jaw type to strut, one side of dilator support mouth 3 is placed on the side of opening the door among Fig. 4, as a strong point, the another side of dilator support mouth 3 then utilizes the fastener 6 with groove structure to hold the end of vertebral plate A, strut (opening) vertebral plate A by handling dilator handle 2, because vertebral plate A only is subjected to a power F obliquely, not to the pressure of vertebral plate door-hinge side, do not cause door-hinge side vertebral plate to subside so can not make the door-hinge fracture, damage neck marrow.When strutting to a certain degree, tighten fixingly by the hold-down nut on the set bolt bar 98, to keep softened state, safety is convenient again.
It will be appreciated that: though the foregoing description has been done more detailed text description to mentality of designing of the present invention, but these text descriptions, just mentality of designing of the present invention is simply described, rather than to the restriction of mentality of designing of the present invention, any combination, increase or modification that does not exceed mentality of designing of the present invention all falls within the scope of the present invention.
Claims (2)
1. spreader for unilateral expansive open-door vertebra board, it comprises the vertebral body dilator, it is characterized in that: support mouth in the described vertebral body dilator and the angle between the handle be greater than 90 degree, and the fastener of support mouth is in groove shape structure and the groove and is provided with anti-slop serrations.
2. spreader for unilateral expansive open-door vertebra board according to claim 1 is characterized in that: described anti-slop serrations is latticed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157483 CN101810509A (en) | 2010-04-23 | 2010-04-23 | Spreader for unilateral expansive open-door vertebra board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157483 CN101810509A (en) | 2010-04-23 | 2010-04-23 | Spreader for unilateral expansive open-door vertebra board |
Publications (1)
| Publication Number | Publication Date |
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| CN101810509A true CN101810509A (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010157483 Pending CN101810509A (en) | 2010-04-23 | 2010-04-23 | Spreader for unilateral expansive open-door vertebra board |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2181746A (en) * | 1939-02-04 | 1939-11-28 | John R Siebrandt | Combination bone clamp and adjustable drill guide |
| CN1113746A (en) * | 1994-06-17 | 1995-12-27 | 泰山医学院附属医院 | Lumber spondylolisthesis reprositor |
| CN2286031Y (en) * | 1996-01-18 | 1998-07-15 | 北京儿童医院 | Reverse-opening clamper of Harrington bar |
| CN1460453A (en) * | 2003-06-08 | 2003-12-10 | 茆树良 | Miniature vertebral body opening device and its transferring device |
| US6669698B1 (en) * | 2000-10-24 | 2003-12-30 | Sdgi Holdings, Inc. | Vertebrae fastener placement guide |
| US20040176779A1 (en) * | 2003-02-03 | 2004-09-09 | Guido Casutt | Targeting aid |
| CN2681691Y (en) * | 2004-03-12 | 2005-03-02 | 昌耘冰 | Centrum reductor by way of intervertebral space |
| CN2868219Y (en) * | 2006-01-13 | 2007-02-14 | 张敬东 | Jaw-type bone opener |
| CN201290750Y (en) * | 2008-11-08 | 2009-08-19 | 冯虎 | Centrum parallel opening tongs |
| CN201333070Y (en) * | 2008-12-31 | 2009-10-28 | 上海市第一人民医院 | Spreader for anterior cervical vertebral bodies |
| CN101617952A (en) * | 2009-07-30 | 2010-01-06 | 刘振华 | Lower cervical anterior distraction reduction device |
| CN201675974U (en) * | 2010-04-23 | 2010-12-22 | 杭州市余杭区第一人民医院 | Single-door open-propping device for vertebral plate |
-
2010
- 2010-04-23 CN CN 201010157483 patent/CN101810509A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2181746A (en) * | 1939-02-04 | 1939-11-28 | John R Siebrandt | Combination bone clamp and adjustable drill guide |
| CN1113746A (en) * | 1994-06-17 | 1995-12-27 | 泰山医学院附属医院 | Lumber spondylolisthesis reprositor |
| CN2286031Y (en) * | 1996-01-18 | 1998-07-15 | 北京儿童医院 | Reverse-opening clamper of Harrington bar |
| US6669698B1 (en) * | 2000-10-24 | 2003-12-30 | Sdgi Holdings, Inc. | Vertebrae fastener placement guide |
| US20040176779A1 (en) * | 2003-02-03 | 2004-09-09 | Guido Casutt | Targeting aid |
| CN1460453A (en) * | 2003-06-08 | 2003-12-10 | 茆树良 | Miniature vertebral body opening device and its transferring device |
| CN2681691Y (en) * | 2004-03-12 | 2005-03-02 | 昌耘冰 | Centrum reductor by way of intervertebral space |
| CN2868219Y (en) * | 2006-01-13 | 2007-02-14 | 张敬东 | Jaw-type bone opener |
| CN201290750Y (en) * | 2008-11-08 | 2009-08-19 | 冯虎 | Centrum parallel opening tongs |
| CN201333070Y (en) * | 2008-12-31 | 2009-10-28 | 上海市第一人民医院 | Spreader for anterior cervical vertebral bodies |
| CN101617952A (en) * | 2009-07-30 | 2010-01-06 | 刘振华 | Lower cervical anterior distraction reduction device |
| CN201675974U (en) * | 2010-04-23 | 2010-12-22 | 杭州市余杭区第一人民医院 | Single-door open-propping device for vertebral plate |
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Application publication date: 20100825 |