CN102429712B - Spondylolisthesis repositioning device and repositor thereof - Google Patents
Spondylolisthesis repositioning device and repositor thereof Download PDFInfo
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- CN102429712B CN102429712B CN 201110386926 CN201110386926A CN102429712B CN 102429712 B CN102429712 B CN 102429712B CN 201110386926 CN201110386926 CN 201110386926 CN 201110386926 A CN201110386926 A CN 201110386926A CN 102429712 B CN102429712 B CN 102429712B
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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
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
- A61B17/7077—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for moving bone anchors attached to vertebrae, thereby displacing the vertebrae
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Abstract
The invention discloses a spondylolisthesis repositioning device and repositor thereof, which is used for repositioning the olisthed vertebral column in the spondylolisthesis repositioning operation. The repositor comprises a fixing arm, a repositioning arm, an adjusting arm and a driving device, wherein the first end of the fixing arm is hinged with the first end of the repositioning arm; the first end of the adjusting arm is hinged with the middle part of the fixing arm, the second end of the adjusting arm and the middle part of the repositioning arm are glidingly connected along the extending direction, and the middle part thereof is connected with the driving device. The driving device is used for driving the adjusting arm to move and driving the first end of the adjusting arm to swivel relative to the fixing arm and the second end thereof to glide along the extending direction of the repositioning arm so as to change the distance and the angle between the fixing arm the second section of the repositioning arm and finally reach the purpose of spondylolisthesis repositioning. The repositor provided by the invention has a simple structure and easy operation, which can effectively reduce the difficulty and risk of operation so as to enhance the safety and reliability of operation.
Description
Technical field
The present invention relates to medical instruments field, particularly relate to a kind of positor for Spondylolisthesis repositioning device.In addition, the invention still further relates to a kind of Spondylolisthesis repositioning device that comprises above-mentioned positor.
Background technology
Lumbar spondylolisthesis and lumbar vertebra disintegrate are common clinicals, account for 5% of lumbago patient sum.But complicated with intervertebral disc, spinal canal stenosis is so that incomplete spinal cord injury.After Hibb wound in 1911 is with way of escape vertebral plate bone graft fusion treatment lumbar spondylolisthesis, nineteen fifty-two Bosworth improves with " H " shape bone-graft fusion, nineteen fifty-three Watkins wound is with merging between the approach transverse process of the rear outside, and the bone grafting healing rate reaches 96%, but the pseudarthrosis incidence rate is up to 15%～40%.The front road of Freebody wound surface interbody fusion in 1971 directly merges intervertebral, but the disunion rate still can not reduce, and curative effect can not be satisfied with.Buck in 1970 adopts isthmus not connect in place's cut-out, bone grafting, the screw and fixes, but indication very little.More than be long-term next traditional treatment principle: remove the compressing of nerve root or horse hair, prevent from continuing slippage, malformation correction is then felt simply helpless.Also be not reset just because of slippage, lumbosacral angle is excessive, will form the slippage shearing of huge intervertebral, makes bone grafting be not enough to antagonism, fatigue fracture, pseudoarticulation formation just occur gradually and continues slippage.Rectification and resetting at of intervertebral that lumbosacral angle is described have very important significance in the treatment.
At present, realizing the reduction of spondylolisthesis of vertebral body, all is to carry out reset operation by implant and kit, and its operation technique is loaded down with trivial details, connection is complicated; The instrument complicated operation, the operation technique difficulty requires high to the doctor; And easily cause to reset and lose, making the very risky of operation, security reliability is difficult to be protected.
Therefore, how improving the security reliability of centrum olisthe reattachment surgery, reduce operating difficulty and risk, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of positor for Spondylolisthesis repositioning device, the security reliability that this positor can Effective Raise centrum olisthe reattachment surgery reduces operating difficulty and risk.Another object of the present invention provides a kind of Spondylolisthesis repositioning device that comprises above-mentioned positor.
For achieving the above object, the invention provides a kind of positor for Spondylolisthesis repositioning device, comprise: the driving device of the described regulating arm motion of fixed arm, reset arm, regulating arm and driving, the first end of described fixed arm and the first end of described reset arm are hinged; The first end of described regulating arm and the middle part of described fixed arm are hinged, and the middle part of the second end and described reset arm is slidingly connected along its bearing of trend, and the middle part is connected with described driving device.
Preferably, described driving device specifically comprises screw rod and the nut that cooperates with described screw rod, and described fixed arm has through hole, and an end and the described regulating arm of described screw rod are slidingly connected, and the other end penetrates described through hole.
Preferably, also comprise the first regulating shaft that connects described screw rod and described regulating arm, the first chute that described regulating arm is identical with its bearing of trend, described screw rod has connecting hole, and described the first regulating shaft is located in described the first chute and the described connecting hole simultaneously.
Preferably, the middle part of described reset arm is provided with second chute identical with its bearing of trend, and the second end of described regulating arm is fixedly connected with the second regulating shaft, and described the second regulating shaft slides along described the second chute.
Preferably, also comprise the handle that is fixedly connected with described reset arm.
Preferably, the affixed position of described handle is near the second end of described reset arm.
The present invention also provides a kind of Spondylolisthesis repositioning device, comprises the supporting apparatus that is fixedly connected with the intravertebral implant of implantation, comprises as weighing above-mentioned each described positor.
Preferably, described supporting apparatus comprises first crossbeam and second cross beam, and the fixed arm of described positor and described first crossbeam are hinged, the second end of the reset arm of described positor and described second cross beam clamping.
Preferably, the second end of described reset arm has the notch that resets that cooperates with described second cross beam, and described second cross beam is arranged in the described notch that resets.
Positor provided by the present invention resets for the spinal column of spondylolishesis reattachment surgery to slippage.This positor comprises fixed arm, reset arm, regulating arm and driving device, wherein, the first end of reset arm and the first end of described fixed arm are hinged, and the first end of regulating arm and the middle part of described fixed arm are hinged, and the middle part of the second end and described reset arm is slidingly connected along its bearing of trend; Driving device is used for driving described regulating arm motion, makes the relative fixed arm rotation of first end of regulating arm, and the second end slides along the bearing of trend of reset arm, thereby phase mutual edge distance and angle between the fixed arm that is hinged and reset arm the second end change.In the spondylolishesis reattachment surgery, may in spinal column, implant the implant of nail class, again supporting apparatus is fixedly connected with implant, implant has two at least, supporting apparatus has first crossbeam and second cross beam, first crossbeam and second cross beam respectively with two implants in one be fixedly connected with.During reduction of spondylolisthesis, fixed arm and first crossbeam is hinged, reset arm and second cross beam are connected, driving device drives the regulating arm motion, make the two ends of regulating arm act on respectively fixed arm and reset arm, make reset arm drive second cross beam away from first crossbeam, and then two implant spacing walk-off angle degree are changed, reach the purpose of reduction of spondylolisthesis.Above-mentioned positor is simple in structure, and reset operation is simple, can effectively reduce risk and the difficulty of operation, improves the security reliability of operation.
A kind of preferred embodiment in, described driving device specifically comprises screw rod and the nut that cooperates with described screw rod, described fixed arm has through hole, an end and the described regulating arm of described screw rod are slidingly connected, the other end penetrates described through hole.In the operation, as long as the manual rotation nut, just can move up or down by drive screw, and then the first end of drive regulating arm rotates with respect to fixed arm, the second end slides along reset arm.Screw rod and nut simple in structure is easy to realize, makes the holistic cost of positor lower.And, manually the control nut can make the quantity of motion of regulating arm be effectively controlled, and then controls second cross beam well away from distance and the angle of first crossbeam, and the distance of reduction of spondylolisthesis and angle are controlled in the ideal range, thereby improve the operation precision, reduce operation risk.
In another preferred embodiment, positor provided by the present invention also comprises the handle that is fixedly connected with described reset arm.In the operation, can control handle, prevent that the clamping in reseting procedure of reset arm and second cross beam is insecure, skew occur, further improve the security reliability of operation, reduce operation risk.
Providing on the basis of above-mentioned positor, the present invention also provides a kind of Spondylolisthesis repositioning device that comprises above-mentioned positor; Because positor has above-mentioned technique effect, the Spondylolisthesis repositioning device with this positor also has corresponding technique effect.
Description of drawings
Fig. 1 is the structural representation of a kind of specific embodiment of positor provided by the present invention;
Fig. 2 is positor perspective view shown in Figure 1;
Fig. 3 is the explosive view of positor shown in Figure 1.
The specific embodiment
Core of the present invention provides a kind of positor for Spondylolisthesis repositioning device, and the security reliability that this positor can Effective Raise centrum olisthe reattachment surgery reduces operating difficulty and risk.Another core of the present invention provides a kind of Spondylolisthesis repositioning device that comprises above-mentioned positor.
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 to Fig. 3, Fig. 1 is the structural representation of a kind of specific embodiment of positor provided by the present invention; Fig. 2 is positor perspective view shown in Figure 1; Fig. 3 is the explosive view of positor shown in Figure 1.
Positor provided by the present invention is used for the spondylolishesis reattachment surgery, is used for the spinal column of slippage is resetted.This positor comprises fixed arm 1, reset arm 2, regulating arm 3 and driving device 4, wherein, the first end of the first end of reset arm 2 and fixed arm 1 is hinged, and the middle part of the first end of regulating arm 3 and fixed arm 1 is hinged, and the middle part of the second end and reset arm 2 is slidingly connected along its bearing of trend; Driving device 4 is used for driving regulating arm 3 motions, make relative fixed arm 1 rotation of first end of regulating arm 3, the second end slides along the bearing of trend of reset arm 2, thereby phase mutual edge distance and angle between the second end of the fixed arm that is hinged 1 and reset arm 2 change, and reach the purpose that resets.
In the spondylolishesis reattachment surgery, may in spinal column, implant the implant of nail class, again supporting apparatus is fixedly connected with implant, implant has two at least, supporting apparatus has first crossbeam and second cross beam, first crossbeam and second cross beam respectively with two implants in one be fixedly connected with.During reduction of spondylolisthesis, with the second end of fixed arm 1 and first crossbeam is hinged (also can directly be hinged on the bone, take bone as fulcrum), the second end and the second cross beam of reset arm 2 are connected, driving device 4 drives regulating arm 3 motions, makes the two ends of regulating arm 3 act on respectively fixed arm 1 and reset arm 2, makes reset arm 2 drive second cross beam away from first crossbeam, and then two implant spacing walk-off angle degree are changed, reach the purpose of reduction of spondylolisthesis.Above-mentioned positor is simple in structure, and reset operation is simple, can effectively reduce risk and the difficulty of operation, improves the security reliability of operation.
Obviously, middle part mentioned above all is said with respect to the end, only otherwise at two ends, all can be understood as the middle part.
In a kind of concrete embodiment, driving device 4 specifically can comprise screw rod 41 and the nut 42 that cooperates with screw rod 41, and fixed arm 1 has through hole, and an end and the regulating arm 3 of screw rod 41 are slidingly connected other end penetrated through via holes.In the operation, as long as manual rotation nut 42, just can move up or down by drive screw 41, and then the first end that drives regulating arm 3 is with respect to fixed arm 1 rotation, the second end is along reset arm 2 slips.Screw rod 41 is simple in structure with nut 42, is easy to realize, makes the holistic cost of positor lower.And, manually control nut 42 can make the quantity of motion of regulating arm 3 be effectively controlled, and then controls second cross beam well away from distance and the angle of first crossbeam, and the distance of reduction of spondylolisthesis and angle are controlled in the ideal range, thereby improve the operation precision, reduce operation risk.
Except the structure of above-mentioned screw rod 41 and nut 42, the structure that can drive regulating arm 3 also has a lot, for example can cooperate at screw rod 41 handwheel is installed, rotarily drive the screw rod 41 that cooperates with it by handwheel, such structure also can realize purpose of the present invention.Understand from the angle of mathematics, fixed arm 1 provided by the present invention, reset arm 2 and regulating arm 3 have formed a variable triangle, take the position at regulating arm 3 places as a leg-of-mutton limit, the height that changes on this limit just can change leg-of-mutton shape, and then the angle between change fixed arm 1 and the reset arm 2, thereby distance and angle adjustment between the second end of the end of realization adjusting fixed arm 1 and reset arm 2.It is a variety of that energy realizes that the mechanical system of such position adjustment has, and gives unnecessary details no longer one by one at this.
Further, positor provided by the present invention can also comprise the first regulating shaft 5 of connecting screw rod 41 and regulating arm 3, the first chute 31 that regulating arm 3 is identical with its bearing of trend, screw rod 41 has connecting hole, and the first regulating shaft 5 is located in the first chute 31 and the connecting hole simultaneously.During adjusting nut 42, the first regulating shaft 5 slides in the first chute 31, reduces the interaction force between screw rod 41 and the regulating arm 3, and the second end that drives more effortlessly regulating arm 3 rotates around first end.Simultaneously, utilize the first regulating shaft 5 to connect regulating arm 3 and screw rod 41, its connected mode is simple, easily manufactures, and can reduce the production cost of positor.
Same reason, the middle part of reset arm 2 also can be provided with second chute 21 identical with its bearing of trend, and the second end of regulating arm 3 is fixedly connected with the second regulating shaft 6, the second regulating shafts 6 and slides along the second chute 21.The second regulating shaft 6 can satisfy the invention needs with both cooperating of the second chute 21, can simplify again the structure of positor, can further reduce the production cost of positor.
Need to prove, the first above-mentioned regulating shaft 5 and the second regulating shaft 6 all can be bolt or other easily detachable structure, to reduce the assembling difficulty of positor.Simultaneously, the first regulating shaft 5 and the second regulating shaft 6 also can be the pins that is welded on respectively on screw rod 41 and the regulating arm 3, and its concrete structure can for multiple, include but not limited to the above-mentioned specific embodiment.
A kind of preferred embodiment in, positor provided by the present invention also comprises the handle 7 that is fixedly connected with reset arm 2.In the operation, can control handle 7, prevent that reset arm 2 and second cross beam clamping in reseting procedure are insecure, unstability or skew occur, further improve the security reliability of operation, reduce operation risk.
Particularly, the affixed position of handle 7 is near the second end of reset arm 2, in the operation, the most close second cross beam of the second end, its stressed maximum is installed in position near the second end with handle 7, can prevent the most effortlessly reset arm 2 skews, further reduce the difficulty of performing the operation, improve the security reliability of operation.
Except above-mentioned positor, the present invention also provides a kind of Spondylolisthesis repositioning device that comprises above-mentioned positor, this Spondylolisthesis repositioning device comprise positor and with the supporting supporting apparatus of positor.In the reduction of spondylolisthesis operation, need in vertebra, implant the implant of at least two nail classes, two implants are separate, and supporting apparatus can comprise first crossbeam and second cross beam, and first crossbeam and second cross beam can be respectively with two implants in one be fixedly connected with.In operation, the fixed arm 1 of positor linked together with first crossbeam, and (fixed arm also can directly be connected on the bone, take bone as fulcrum), reset arm 2 and second cross beam clamping, regulate the subtended angle of fixed arm 1 and reset arm 2 by regulating arm 3, regulate distance and angle between first crossbeam and second cross beam, and then regulate distance and angle between two implants, reach the purpose of reduction of spondylolisthesis.
Need to prove, supporting apparatus as herein described, when referring to finish the spondylolishesis reattachment surgery, the general name of the equipment except positor.Because the application only makes improvement to the positor of Spondylolisthesis repositioning device, miscellaneous equipment is not changed, those skilled in the art mix positor provided by the present invention according to existing equipment, namely can finish efficiently operation, realize purpose of the present invention, therefore, the present invention does not do deeply to introduce further to supporting apparatus, the reader can with reference to the correlation technique document, not repeat them here.
Simultaneously, because supporting apparatus is general name, can not be interpreted as that supporting apparatus is a device or device, the first crossbeam of for example carrying among the present invention and second cross beam, though both belong to the part of supporting apparatus, can be split, be fixedly connected with two implants respectively.
Particularly, the second end of reset arm 2 has the notch that resets that cooperates with second cross beam, and second cross beam is arranged in the notch that resets.Resetting the concrete structure of notch can be according to the design of the practical structures of second cross beam, in operation second cross beam and reset arm 2 being linked together as basic demand, drives implant and moves the realization reduction of spondylolisthesis so that reset arm 2 can effectively promote second cross beam.
Above Spondylolisthesis repositioning device provided by the present invention and positor thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (9)
1. a positor that is used for Spondylolisthesis repositioning device is characterized in that, comprises the driving device of the described regulating arm motion of fixed arm, reset arm, regulating arm and driving, and the first end of described fixed arm and the first end of described reset arm are hinged; The first end of described regulating arm and the middle part of described fixed arm are hinged, and the middle part of the second end and described reset arm is slidingly connected along its bearing of trend, and the middle part of described regulating arm is connected with described driving device.
2. the positor for Spondylolisthesis repositioning device according to claim 1, it is characterized in that, described driving device specifically comprises screw rod and the nut that cooperates with described screw rod, described fixed arm has through hole, one end and the described regulating arm of described screw rod are slidingly connected, and the other end penetrates described through hole.
3. the positor for Spondylolisthesis repositioning device according to claim 2, it is characterized in that, also comprise the first regulating shaft that connects described screw rod and described regulating arm, first chute identical with the bearing of trend of described regulating arm, described screw rod has connecting hole, and described the first regulating shaft is located in described the first chute and the described connecting hole simultaneously.
4. the positor for Spondylolisthesis repositioning device according to claim 3, it is characterized in that, the middle part of described reset arm is provided with second chute identical with its bearing of trend, the second end of described regulating arm is fixedly connected with the second regulating shaft, and described the second regulating shaft slides along described the second chute.
5. according to claim 1 to 4 each described positors for Spondylolisthesis repositioning device, it is characterized in that, also comprise the handle that is fixedly connected with described reset arm.
6. the positor for Spondylolisthesis repositioning device according to claim 5 is characterized in that, the affixed position of described handle is near the second end of described reset arm.
7. a Spondylolisthesis repositioning device comprises the supporting apparatus that is fixedly connected with the intravertebral implant of implantation, it is characterized in that, comprises such as each described positor of claim 1 to 6.
8. Spondylolisthesis repositioning device according to claim 7, it is characterized in that, described supporting apparatus comprises first crossbeam and second cross beam, and the second end and the described first crossbeam of the fixed arm of described positor are hinged, the second end of the reset arm of described positor and described second cross beam clamping.
9. Spondylolisthesis repositioning device according to claim 8 is characterized in that, the second end of described reset arm has the notch that resets that cooperates with described second cross beam, and described second cross beam is arranged in the described notch that resets.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110386926 CN102429712B (en) | 2011-11-28 | 2011-11-28 | Spondylolisthesis repositioning device and repositor thereof |
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| CN 201110386926 CN102429712B (en) | 2011-11-28 | 2011-11-28 | Spondylolisthesis repositioning device and repositor thereof |
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| CN102429712A CN102429712A (en) | 2012-05-02 |
| CN102429712B true CN102429712B (en) | 2013-09-18 |
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| CN 201110386926 Active CN102429712B (en) | 2011-11-28 | 2011-11-28 | Spondylolisthesis repositioning device and repositor thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112038769B (en) * | 2019-06-03 | 2023-07-21 | 南京中兴新软件有限责任公司 | Adjustable bracket assembly and adjustable mounting piece for equipment installation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113746A (en) * | 1994-06-17 | 1995-12-27 | 泰山医学院附属医院 | Lumber spondylolisthesis reprositor |
| CN101052357A (en) * | 2004-08-10 | 2007-10-10 | 华沙整形外科股份有限公司 | Reducing instrument for spinal surgery |
| CN202409102U (en) * | 2011-11-28 | 2012-09-05 | 上海拓腾医疗器械有限公司 | Spondylolisthesis restoring device and restorer thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8425601B2 (en) * | 2006-09-11 | 2013-04-23 | Warsaw Orthopedic, Inc. | Spinal stabilization devices and methods of use |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113746A (en) * | 1994-06-17 | 1995-12-27 | 泰山医学院附属医院 | Lumber spondylolisthesis reprositor |
| CN101052357A (en) * | 2004-08-10 | 2007-10-10 | 华沙整形外科股份有限公司 | Reducing instrument for spinal surgery |
| CN202409102U (en) * | 2011-11-28 | 2012-09-05 | 上海拓腾医疗器械有限公司 | Spondylolisthesis restoring device and restorer thereof |
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| CN102429712A (en) | 2012-05-02 |
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Owner name: SHANGHAI SANYOU MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: SHANGHAI TATENG MEDICAL DEVICE CO.,LTD. Effective date: 20140609 |
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Effective date of registration: 20140609 Address after: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Patentee after: Shanghai Sanyou Medical Devices Co., Ltd. Address before: 201209, Pudong New Area, Shanghai Qing Road 356, 3, 2 floor Patentee before: Shanghai Tateng Medical Device Co.,Ltd. |
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Address after: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Patentee after: Shanghai Sanyou medical equipment Limited by Share Ltd Address before: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Patentee before: Shanghai Sanyou Medical Devices Co., Ltd. |