WO2024045647A1 - 一种单臂固定支架及其调节固定方法 - Google Patents
一种单臂固定支架及其调节固定方法 Download PDFInfo
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- WO2024045647A1 WO2024045647A1 PCT/CN2023/089637 CN2023089637W WO2024045647A1 WO 2024045647 A1 WO2024045647 A1 WO 2024045647A1 CN 2023089637 W CN2023089637 W CN 2023089637W WO 2024045647 A1 WO2024045647 A1 WO 2024045647A1
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- Prior art keywords
- moving block
- needle
- threaded rod
- threaded
- fixed bracket
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 210000000988 bone and bone Anatomy 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010070918 Bone deformity Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- 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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
Definitions
- the invention relates to medical equipment, and in particular to a single-arm fixed bracket and an adjustment and fixing method thereof.
- the single-arm integrated orthopedic external fixation bracket is a commonly used external fixation method in medicine. It is used in conjunction with metal bone pins for orthopedic external fixation surgeries to help patients with bone fractures or deformities correct and fix their bones and avoid complications during fracture treatment. Problems such as bone dislocation can better help patients recover.
- the traditional single-arm fixed bracket generally consists of a pin clip block, a telescopic body and a universal joint.
- the pin clip block is connected to both ends of the telescopic body through the universal joint with an adjustable angle.
- the telescopic body The length of the single-arm fixed bracket can be adjusted telescopically.
- the needle clamp block fixes the steel needle.
- the position of the needle clamp block and the length of the telescopic body are adjusted.
- the steel pin is embedded into the bone to complete the fixed installation of the single-arm fixed bracket.
- the traditional single-arm fixed bracket requires manual adjustment. The adjustment process is cumbersome and laborious for doctors.
- the purpose of the present invention is to provide a single-arm fixed bracket to solve one or more problems in the prior art.
- a single-arm fixed bracket includes a telescopic body and a needle body.
- the telescopic body includes a first moving block and a second moving block.
- the first moving block and the second moving block move through a slide groove and a slide rail.
- the first moving block and the second moving block are both connected to the needle body through a universal joint, and the first moving block and the second moving block are respectively connected with threaded sleeves.
- barrel and threaded rod, the threaded sleeve and the threaded rod are threadedly connected, and the threaded rod is connected with the driving end of the driving motor.
- a connection threaded hole is provided on the slide rail of the second moving block, an oblong hole is provided on one side of the sliding groove of the matching first moving block, and the first fixing screw passes through the oblong hole and is threadedly connected to the thread on the slide rail.
- the first moving block and the second moving block are fixedly connected in the hole.
- the needle clamp body includes a needle clamp base and a needle clamp cover.
- the needle clamp base and the needle clamp cover are both provided with needle clamp positioning grooves on the inside.
- the needle clamp base and the needle clamp cover are fixedly connected by a second fixing screw.
- the universal joint includes a steel bowl, a universal ball and a locking sleeve.
- the steel bowl is integrally connected to the first moving block and the second moving block.
- the locking sleeve is threadedly connected to the steel bowl and connects the universal joint.
- the ball is mounted into a steel bowl.
- the steel bowl is located on one side of the universal ball and has an eccentric shaft for adjusting the tightness of the universal ball.
- One end of the eccentric shaft is provided with an internal hexagonal groove.
- the threaded sleeve is fixedly connected to the first connection seat, the threaded rod is rotatably connected to the second connection seat, the first connection seat and the second connection seat are connected to the connection column, the first connection seat and the third connection seat are connected to each other.
- the two connecting seats pass through the connecting posts into the through holes opened in the first moving block and the second moving block.
- the first connecting seat is connected to a driving motor, the driving motor is parallel to the threaded sleeve and the threaded rod, the driving motor is connected to the driving gear, the threaded rod is connected to the driven gear, and the driving gear and the driven gear are meshed and connected. .
- the connecting posts of the first connecting seat and the second connecting seat are connected to the O-shaped rubber rings through connecting grooves.
- a method for adjusting and fixing a single-arm fixed bracket including the following steps:
- Adjust the angle of the clamp needle body first turn the eccentric shaft to make the protruding part of the eccentric shaft away from the universal ball, so that the universal ball can be loosened.
- the universal ball can be freely rotated and adjusted in the steel bowl and locking sleeve, and then the universal ball can be driven. Rotate the needle body to adjust the angle. After the angle adjustment is completed, rotate the eccentric shaft again so that the protruding part of the eccentric shaft is close to the universal ball.
- the universal ball can be squeezed tightly into the steel bowl and locking sleeve through the eccentric shaft. The ball cannot rotate freely, that is, the angle of the needle body is fixed;
- the telescopic body is connected to the threaded sleeve and threaded rod: the threaded sleeve and the threaded rod are first threaded into a whole, and then the threaded sleeve penetrates through the connecting column of the first connecting seat into the eccentric shaft connected to the first moving block. into the through hole of the second moving block, that is, the connection between the threaded sleeve and the first moving block is completed, and the threaded rod penetrates through the connecting column of the second connecting seat into the through hole of the eccentric shaft connected to the second moving block, that is, the threaded rod and the first moving block are completed.
- the connection of the second moving block is to complete the connection of the threaded sleeve and the threaded rod to the telescopic body;
- Adjustment of the length of the telescopic body Start the drive motor to drive the driving gear to rotate, and then the threaded rod can be driven through the driven gear meshed with it.
- the threaded rod can adjust the first connection on both sides by matching the threaded sleeve threaded with it.
- the distance between the base and the second connecting base, the distance between the first moving block and the second moving block can be adjusted through the first connecting base and the second connecting base, thereby realizing automatic adjustment of the length of the telescopic body;
- the single-arm fixed bracket can automatically adjust the length of the telescopic body through the drive motor and the threaded sleeve and threaded rod.
- the adjustment operation is convenient, the adjustment efficiency is high, the adjustment accuracy is high, and precise bone adjustment is achieved;
- An eccentric shaft is set on one side of the universal joint.
- the eccentric shaft can rotate to adjust the tightness of the universal ball.
- the eccentric shaft rotates to loosen the universal ball, which facilitates the angle adjustment of the needle body.
- One end of the eccentric shaft has an internal hexagonal slot for rotation adjustment of the eccentric shaft
- the threaded sleeve, threaded rod and drive motor are connected through the first connecting seat and the second connecting seat.
- the first connecting seat and the second connecting seat are connected through the connecting column through the first moving block and the second moving block.
- Figure 1 shows a schematic structural diagram of the single-arm fixed bracket of this embodiment.
- Figure 2 shows a front view of the single-arm fixed bracket of this embodiment.
- Figure 3 shows a cross-sectional view of the single-arm fixed bracket of this embodiment.
- the single-arm fixed bracket of this embodiment includes a telescopic body 1 and a needle body 2.
- the telescopic body 1 includes a first moving block 11 and a second moving block 12.
- the first moving block 11 and The second moving block 12 moves and contracts through the slide groove 111 and the slide rail 121.
- the slide rail 121 of the second moving block 12 is provided with a connecting threaded hole 122, and the matching first moving block 11 is provided with an oblong hole 112 on one side of the slide groove 111.
- the first fixing screw 13 passes through the oblong hole 112 and is threadedly connected to the threaded hole 122 on the slide rail 121 to fixedly connect the first moving block 11 and the second moving block 12.
- the joint 3 is connected to the clamp needle body 2.
- the universal joint 3 includes a steel bowl 31, a universal ball 32 and a locking sleeve 33.
- the steel bowl 31 is integrally connected with the first moving block 11 and the second moving block 12, and the locking sleeve 33 It is threaded on the steel bowl 31 and the universal ball 32 is installed into the steel bowl 31.
- the universal ball 32 passes through the locking sleeve 33 through the connecting rod and is connected to the clamp needle body 2.
- the clamp needle body 2 includes the clamp needle base 21 and The needle clamp cover 22, the needle clamp base 21 and the needle clamp cover 22 each have a needle clamp positioning groove 23 on the inside.
- the needle clamp base 21 and the needle clamp cover 22 are fixedly connected through the second fixing screw 24.
- the first moving block 11 and the second moving block The threaded sleeve 4 and the threaded rod 5 are respectively connected to the block 12, the threaded sleeve 4 and the threaded rod 5 are threaded, and the threaded rod 5 is connected to the driving motor 6.
- the steel bowl 31 is located on one side of the universal ball 32 and has an eccentric shaft 34 for adjusting the tightness of the universal ball 32.
- the eccentric shaft 34 has a through hole.
- the eccentric shaft 34 is located at one end of the through hole and has an inner hexagonal groove 341 for eccentricity. Rotation adjustment of shaft 34.
- the threaded sleeve 4 is fixedly connected to the first connecting seat 41, the threaded rod 5 is rotatably connected to the second connecting seat 51, the first connecting seat 41 and the second connecting seat 51 are connected to the connecting column 7, the first connecting seat 41 and the second connecting seat 51
- the connecting column 7 penetrates into the through hole opened by the eccentric shaft 34.
- the connecting column 7 of the first connecting seat 41 and the second connecting seat 51 is connected to the O-shaped rubber ring 71 through the connecting groove.
- the connecting column can be connected through the O-shaped rubber ring 71. 7 is clamped into the through hole opened by the eccentric shaft 34 to ensure the connection strength between the first connecting seat 41 and the second connecting seat 51 and the telescopic body 1.
- the first connecting seat 41 is connected to the driving motor 6.
- the driving motor 6 is parallel to the threaded sleeve 4 and the threaded rod 5, and is located above the threaded sleeve 4 and the threaded rod 5.
- the driving motor 6 is connected to the driving gear 61, and the threaded rod 5 is connected to the driven gear.
- the gear 52, the driving gear 61 and the driven gear 52 are meshed and connected.
- Angle adjustment of the needle body 2 To adjust the angle of the needle body 2, first rotate the eccentric shaft 34 to make the protruding part of the eccentric shaft 34 away from the universal ball 32, so that the universal ball 32 can be loosened, and the universal ball 32 can be The steel bowl 31 and the locking sleeve 33 can be freely rotated and adjusted to drive the needle body 2 to rotate and adjust the angle. After the angle adjustment is completed, rotate the eccentric shaft 34 again to make the protruding part of the eccentric shaft 34 close to the universal ball 32. The universal ball 32 is squeezed into the steel bowl 31 and the locking sleeve 33 through the eccentric shaft 34. The universal ball 32 cannot rotate freely, that is, the angle of the needle body 2 is fixed;
- the telescopic body 1 is connected to the threaded sleeve 4 and the threaded rod 5: the threaded sleeve 4 and the threaded rod 5 are first threaded into a whole, and then the threaded sleeve 4 penetrates into the first connecting post 7 through the first connecting seat 41. In the through hole of the eccentric shaft 34 connected to the moving block 11, the connection between the threaded sleeve 4 and the first moving block 11 is completed. The threaded rod 5 penetrates into the second moving block 12 through the connecting column 7 of the second connecting seat 51.
- Length adjustment of the telescopic body 1 start the drive motor 6, the drive motor 6 drives the driving gear 61 to rotate, and then drives the threaded rod 5 through the driven gear 52 meshed with it, and the threaded rod 5 cooperates with the threaded sleeve threadedly connected thereto. 4, the distance between the first connecting seat 41 and the second connecting seat 51 on both sides can be adjusted, and the distance between the first moving block 11 and the second moving block 12 can be adjusted through the first connecting seat 41 and the second connecting seat 51. distance between each other, thereby realizing automatic adjustment of the length of the telescopic body 1;
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- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
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- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
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Abstract
本发明涉及一种单臂固定支架及其调节固定方法，包括伸缩体和夹针体，所述伸缩体包括第一移动块和第二移动块，所述第一移动块和所述第二移动块通过滑槽配合滑轨移动伸缩，并通过第一固定螺钉固定连接，所述第一移动块和第二移动块均通过万向节连接夹针体，所述第一移动块和所述第二移动块上分别连接螺纹套筒和螺纹杆，所述螺纹套筒和螺纹杆螺纹连接，所述螺纹杆与驱动电机的驱动端连接，所述单臂固定支架及其调节固定方法，可自动调节伸缩体的长度，调节操作方便，调节效率高，调节精度高，实现精准骨骼调整。
Description
本发明涉及医学设备，尤其涉及一种单臂固定支架及其调节固定方法。
单臂一体式骨科外固定支架是一种医学上常用的外固定骨骼治疗方法，与金属骨针配合供骨科外固定手术用，帮助骨骼断裂或者畸形患者矫正并固定骨骼，避免骨折治疗过程中的骨骼错位等问题，更好地帮助患者恢复。
传统的单臂固定支架为了满足不同情况的固定要求一般包括夹针块、伸缩体和万向节等部件组成，夹针块通过万向节可调节角度的连接在伸缩体两端上，伸缩体可伸缩调节单臂固定支架的长度，该单臂固定支架使用时，夹针块固定钢针，再通过单臂固定支架的固定位置，调节完成夹针块的位置和伸缩体的长度后，再将钢针嵌入骨骼内，完成单臂固定支架的固定安装。传统的单臂固定支架需要人工进行调节，对于医生来说调节过程较为繁琐且费力，调整效果完全依靠于医生的经验，调节精度不可控。并且传统的单臂固定支架两端的夹针块是活动的，存在固定好后，仍有意外移位的可能，会影响正常的治疗流程，甚至会对患者造成二次伤害，所以需要设计一种可自动调节，并不易移位的单臂固定支架。
针对上述现有技术的缺点，本发明的目的是提供一种单臂固定支架，以解决现有技术中的一个或多个问题。
为实现上述目的，本发明的技术方案如下：
一种单臂固定支架，包括伸缩体和夹针体，所述伸缩体包括第一移动块和第二移动块，所述第一移动块和所述第二移动块通过滑槽配合滑轨移动伸缩，并通过第一固定螺钉固定连接，所述第一移动块和第二移动块均通过万向节连接夹针体，所述第一移动块和所述第二移动块上分别连接螺纹套筒和螺纹杆，所述螺纹套筒和螺纹杆螺纹连接，所述螺纹杆与驱动电机的驱动端连接。
作为上述技术方案的进一步改进：
所述第二移动块的滑轨上开设连接螺纹孔，配合的所述第一移动块的滑槽一侧开设长圆孔，所述第一固定螺钉穿过长圆孔螺纹连接到滑轨上的螺纹孔内固定连接所述第一移动块和所述第二移动块。
所述夹针体包括夹针底座和夹针盖，所述夹针底座和夹针盖内侧均开设夹针定位槽，所述夹针底座和夹针盖通过第二固定螺钉固定连接。
所述万向节包括钢碗、万向球和锁紧套，所述钢碗与第一移动块和第二移动块一体连接，所述锁紧套螺纹连接在钢碗上，并将万向球安装到钢碗内。
所述钢碗位于万向球一侧穿有调节万向球松紧的偏心轴。
所述偏心轴一端开设内六角槽。
所述螺纹套筒固定连接第一连接座，所述螺纹杆转动连接第二连接座，所述第一连接座和所述第二连接座连接连接柱，所述第一连接座和所述第二连接座通过连接柱穿到所述第一移动块和所述第二移动块上开设的通孔内。
所述第一连接座连接驱动电机，所述驱动电机与螺纹套筒与螺纹杆平行，所述驱动电机连接主动齿轮，所述螺纹杆连接从动齿轮，所述主动齿轮和从动齿轮啮合连接。
所述第一连接座和所述第二连接座的连接柱通过连接槽连接O形橡胶圈。
一种单臂固定支架调节固定方法，包括以下步骤：
1）夹针体角度调节：先转动偏心轴，使偏心轴凸出部远离万向球，使万向球松开，万向球可在钢碗和锁紧套内自由转动调节，即可带动夹针体转动调节角度，角度调节完成后，再次转动偏心轴，使偏心轴凸出部靠近万向球，即可通过偏心轴将万向球挤紧在钢碗和锁紧套内，万向球不可自由转动，即将夹针体的角度固定住；
2）伸缩体与螺纹套筒和螺纹杆连接：螺纹套筒和螺纹杆先螺纹连接为一个整体，然后螺纹套筒通过第一连接座的连接柱穿入第一移动块上穿连的偏心轴的通孔内，即完成螺纹套筒和第一移动块的连接，螺纹杆通过第二连接座的连接柱穿入第二移动块上穿连的偏心轴的通孔内，即完成螺纹杆和第二移动块的连接，即完成螺纹套筒和螺纹杆整体与伸缩体连接；
3）伸缩体长度调节：启动驱动电机，带动主动齿轮转动，即可通过与之啮合的从动齿轮带动螺纹杆，螺纹杆配合与之螺纹连接的螺纹套筒即可调节两侧的第一连接座和第二连接座之间的距离，通过第一连接座和第二连接座即可调节第一移动块和第二移动块之间的距离，从而实现伸缩体的长度的自动调节；
4）伸缩体长度固定：长度调节完成后，先关闭驱动电机，然后通过第一固定螺钉将第一移动块和第二移动块固定住，即将伸缩体的长度固定住；
5）螺纹套筒和螺纹杆拆卸：第一连接座和第二连接座的连接柱从两根偏心轴内开设的通孔内抽出，即可将第一连接座连接的螺纹套筒和驱动电机以及第二连接座连接螺纹杆拆卸下来；
6）单臂固定支架的固定安装：钢针穿到夹针底座和夹针盖之间的夹针定位槽内，并沿夹针定位槽将钢针安装到患者骨骼内，最后拧紧第二固定螺钉，将钢针夹紧固定在夹针底座和夹针盖之间，即完成单臂固定支架的固定安装。
与现有技术相比，本发明的有益技术效果如下：
1）单臂固定支架，通过驱动电机配合螺纹套筒和螺纹杆可自动调节伸缩体的长度，调节操作方便，调节效率高 ，调节精度高，实现精准骨骼调整；
2）万向节一侧设置偏心轴，偏心轴可转动调节万向球松紧，调节时偏心轴转动将万向球松开，方便进行夹针体的角度调节，夹针体角度调节完成后，再转动偏心轴将万向球挤压，防止角度调整完成后夹针体意外转动；
3）偏心轴一端开设内六角槽，用于偏心轴的转动调节；
4）螺纹套筒、螺纹杆和驱动电机通过第一连接座和第二连接座连接，第一连接座和第二连接座连接通过连接柱穿在第一移动块和第二移动，调节完成后，可直接将螺纹套筒、螺纹杆和驱动电机卸下，可减轻单臂固定支架的重量。
图1示出了本实施例的单臂固定支架的结构示意图。
图2示出了本实施例的单臂固定支架的正视图。
图3示出了本实施例的单臂固定支架的剖视图。
附图中标记：
1、伸缩体；11、第一移动块；111、滑槽；112、长圆孔；12、第二移动块；121、滑轨；122、螺纹孔；13、第一固定螺钉；2、夹针体；21、夹针底座；22、夹针盖；23、夹针定位槽；24、第二固定螺钉；3、万向节；31、钢碗；32、万向球；33、锁紧套；34、偏心轴；341、内六角槽；4、螺纹套筒；41、第一连接座；5、螺纹杆；51、第二连接座；52、从动齿轮；6、驱动电机；61、主动齿轮；7、连接柱；71、O形橡胶圈。
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图和具体实施方式对本发明提出的装置作进一步详细说明。根据下面的说明，本发明的优点和特征将更加清楚。需要说明的是，附图采用了非常简化的形式且均使用非精准的比例，仅用以方便、明晰地辅助说明本发明实施方式的目的。为了使本发明的目的、特征和优点能够更加明显易懂，请参阅附图。须知，本说明书所附图式所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明实施的限定条件，故不具有技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应落在本发明所揭示的技术内容能涵盖的范围内。
如图1至图3所示，本实施例的单臂固定支架，包括伸缩体1和夹针体2，伸缩体1包括第一移动块11和第二移动块12，第一移动块11和第二移动块12通过滑槽111配合滑轨121移动伸缩，第二移动块12的滑轨121上开设连接螺纹孔122，配合的第一移动块11的滑槽111一侧开设长圆孔112，第一固定螺钉13穿过长圆孔112螺纹连接到滑轨121上的螺纹孔122内固定连接第一移动块11和第二移动块12，第一移动块11和第二移动块12均通过万向节3连接夹针体2，万向节3包括钢碗31、万向球32和锁紧套33，钢碗31与第一移动块11和第二移动块12一体连接，锁紧套33螺纹连接在钢碗31上，并将万向球32安装到钢碗31内，万向球32通过连杆穿过锁紧套33连接夹针体2，夹针体2包括夹针底座21和夹针盖22，夹针底座21和夹针盖22内侧均开设夹针定位槽23，夹针底座21和夹针盖22通过第二固定螺钉24固定连接，第一移动块11和第二移动块12上分别连接螺纹套筒4和螺纹杆5，螺纹套筒4和螺纹杆5螺纹连接，螺纹杆5连接驱动电机6。
钢碗31位于万向球32一侧穿有调节万向球32松紧的偏心轴34，且偏心轴34内开有通孔，另外偏心轴34位于通孔一端开设内六角槽341，用于偏心轴34的转动调节。
螺纹套筒4固定连接第一连接座41，螺纹杆5转动连接第二连接座51，第一连接座41和第二连接座51连接连接柱7，第一连接座41和第二连接座51通过连接柱7穿到偏心轴34开设的通孔内，第一连接座41和第二连接座51的连接柱7通过连接槽连接O形橡胶圈71，通过O形橡胶圈71可使连接柱7卡紧到偏心轴34开设的通孔内，保证第一连接座41和第二连接座51与伸缩体1的连接强度。
第一连接座41连接驱动电机6，驱动电机6与螺纹套筒4与螺纹杆5平行，并位于螺纹套筒4与螺纹杆5上方，驱动电机6连接主动齿轮61，螺纹杆5连接从动齿轮52，主动齿轮61和从动齿轮52啮合连接。
本实施例的单臂固定支架调节固定方法，包括以下步骤：
1）夹针体2角度调节：进行夹针体2角度调节，先转动偏心轴34，使偏心轴34凸出部远离万向球32，使万向球32松开，万向球32可在钢碗31和锁紧套33内自由转动调节，即可带动夹针体2转动调节角度，角度调节完成后，再次转动偏心轴34，使偏心轴34凸出部靠近万向球32，即可通过偏心轴34将万向球32挤紧在钢碗31和锁紧套33内，万向球32不可自由转动，即将夹针体2的角度固定住；
2）伸缩体1与螺纹套筒4和螺纹杆5连接：螺纹套筒4和螺纹杆5先螺纹连接为一个整体，然后螺纹套筒4通过第一连接座41的连接柱7穿入第一移动块11上穿连的偏心轴34的通孔内，即完成螺纹套筒4和第一移动块11的连接，螺纹杆5通过第二连接座51的连接柱7穿入第二移动块12上穿连的偏心轴34的通孔内，即完成螺纹杆5和第二移动块12的连接，即完成螺纹套筒4和螺纹杆5整体与伸缩体1连接；
3）伸缩体1长度调节：启动驱动电机6，驱动电机6带动主动齿轮61转动，即可通过与之啮合的从动齿轮52带动螺纹杆5，螺纹杆5配合与之螺纹连接的螺纹套筒4即可调节两侧的第一连接座41和第二连接座51之间的距离，通过第一连接座41和第二连接座51即可调节第一移动块11和第二移动块12之间的距离，从而实现伸缩体1的长度的自动调节；
4）伸缩体1长度固定：伸缩体1长度调节完成后，先关闭驱动电机6，然后通过第一固定螺钉13将第一移动块11和第二移动块12固定住，即将伸缩体1的长度固定住；
5）螺纹套筒4和螺纹杆5拆卸：第一连接座41和第二连接座51的连接柱7从两根偏心轴34内开设的通孔内抽出，即可将第一连接座41连接的螺纹套筒4和驱动电机6以及第二连接座51连接螺纹杆5拆卸下来；
6）单臂固定支架的固定安装：钢针穿到夹针底座21和夹针盖22之间的夹针定位槽23内，沿着夹针定位槽23将钢针安装到患者骨骼内，最后拧紧第二固定螺钉24，将钢针夹紧固定在夹针底座21和夹针盖22之间，即完成单臂固定支架调节固定；
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书所记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都应当属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。
Claims (10)
- 一种单臂固定支架，其特征在于：包括伸缩体和夹针体，所述伸缩体包括第一移动块和第二移动块，所述第一移动块和所述第二移动块通过滑槽配合滑轨移动伸缩，并通过第一固定螺钉固定连接，所述第一移动块和第二移动块均通过万向节连接夹针体，所述第一移动块和所述第二移动块上分别连接螺纹套筒和螺纹杆，所述螺纹套筒和螺纹杆螺纹连接，所述螺纹杆与驱动电机的驱动端连接。
- 如权利要求1所述的单臂固定支架，其特征在于：所述第二移动块的滑轨上开设连接螺纹孔，配合的所述第一移动块的滑槽一侧开设长圆孔，所述第一固定螺钉穿过长圆孔螺纹连接到滑轨上的螺纹孔内固定连接所述第一移动块和所述第二移动块。
- 如权利要求1所述的单臂固定支架，其特征在于：所述夹针体包括夹针底座和夹针盖，所述夹针底座和夹针盖内侧均开设夹针定位槽，所述夹针底座和夹针盖通过第二固定螺钉固定连接。
- 如权利要求1所述的单臂固定支架，其特征在于：所述万向节包括钢碗、万向球和锁紧套，所述钢碗与第一移动块和第二移动块一体连接，所述锁紧套螺纹连接在钢碗上，并将万向球安装到钢碗内。
- 如权利要求4所述的单臂固定支架，其特征在于：所述钢碗位于万向球一侧穿有调节万向球松紧的偏心轴。
- 如权利要求5所述的单臂固定支架，其特征在于：所述偏心轴一端开设内六角槽。
- 如权利要求1所述的单臂固定支架，其特征在于：所述螺纹套筒固定连接第一连接座，所述螺纹杆转动连接第二连接座，所述第一连接座和所述第二连接座连接连接柱，所述第一连接座和所述第二连接座通过连接柱穿到所述第一移动块和所述第二移动块上开设的通孔内。
- 如权利要求7所述的单臂固定支架，其特征在于：所述第一连接座连接驱动电机，所述驱动电机与螺纹套筒与螺纹杆平行，所述驱动电机连接主动齿轮，所述螺纹杆连接从动齿轮，所述主动齿轮和从动齿轮啮合连接。
- 如权利要求7所述的单臂固定支架，其特征在于：所述第一连接座和所述第二连接座的连接柱通过连接槽连接O形橡胶圈。
- 一种单臂固定支架调节固定方法，包括以下步骤：1）夹针体角度调节：先转动偏心轴，使偏心轴凸出部远离万向球，使万向球松开，万向球可在钢碗和锁紧套内自由转动调节，即可带动夹针体转动调节角度，角度调节完成后，再次转动偏心轴，使偏心轴凸出部靠近万向球，即可通过偏心轴将万向球挤紧在钢碗和锁紧套内，万向球不可自由转动，即将夹针体的角度固定住；2）伸缩体与螺纹套筒和螺纹杆连接：螺纹套筒和螺纹杆先螺纹连接为一个整体，然后螺纹套筒通过第一连接座的连接柱穿入第一移动块上穿连的偏心轴的通孔内，即完成螺纹套筒和第一移动块的连接，螺纹杆通过第二连接座的连接柱穿入第二移动块上穿连的偏心轴的通孔内，即完成螺纹杆和第二移动块的连接，即完成螺纹套筒和螺纹杆整体与伸缩体连接；3）伸缩体长度调节：启动驱动电机，带动主动齿轮转动，即可通过与之啮合的从动齿轮带动螺纹杆，螺纹杆配合与之螺纹连接的螺纹套筒即可调节两侧的第一连接座和第二连接座之间的距离，通过第一连接座和第二连接座即可调节第一移动块和第二移动块之间的距离，从而实现伸缩体的长度的自动调节；4）伸缩体长度固定：长度调节完成后，先关闭驱动电机，然后通过第一固定螺钉将第一移动块和第二移动块固定住，即将伸缩体的长度固定住；5）螺纹套筒和螺纹杆拆卸：第一连接座和第二连接座的连接柱从两根偏心轴内开设的通孔内抽出，即可将第一连接座连接的螺纹套筒和驱动电机以及第二连接座连接螺纹杆拆卸下来；6）单臂固定支架的固定安装：钢针穿到夹针底座和夹针盖之间的夹针定位槽内，并沿夹针定位槽将钢针安装到患者骨骼内，最后拧紧第二固定螺钉，将钢针夹紧固定在夹针底座和夹针盖之间，即完成单臂固定支架的固定安装。
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