技术领域technical field
本发明涉及一种准确置入椎弓根螺钉的导向装置，属于骨科手术器械技术领域。The invention relates to a guide device for accurately placing pedicle screws, which belongs to the technical field of orthopedic surgical instruments.
背景技术Background technique
椎弓根是椎弓的一部分，起于椎体后外侧，短而厚，与椎体方向垂直向后方突起，其外形呈弧性，与椎体、关节突和椎板融合在一起。相邻椎弓根的上下切迹组成椎间孔，椎间孔里面走形神经。相邻椎体的椎孔组成椎管，里面走形神经和脊髓。椎弓根内邻椎管，下邻椎间孔，所以在脊椎手术中应特别注意此结构。临床中的椎弓根螺钉即在此位置经过，因此准确地置入椎弓根螺钉是手术成功的关键。例如，临床在治疗椎体压缩性骨折的时候，需要先在压缩椎体的相邻上下椎体打入椎弓根螺钉固定，两侧各一枚分别打入，再借助钉棒系统撑开。打入椎弓根螺钉需多次借助X线透视，给患者和术者带来大量的辐射，最重要的问题是两枚椎弓根螺钉往往打入不对称，最终由于把持力度不均，出现固定不稳定，甚至是固定失败。因此，在临床手术中如何准确地在椎体两侧分别打入椎弓根螺钉，既要避免椎弓根螺钉进入椎管或脱离椎体，还要保持两侧的椎弓根螺钉对称，使得把持力度一致，同时要尽快完成以减少辐射，一直是困扰椎弓根手术的难题，亟待加以解决。The pedicle is a part of the vertebral arch, which starts from the posterolateral side of the vertebral body, is short and thick, and protrudes perpendicularly to the direction of the vertebral body toward the rear. The upper and lower notches of the adjacent pedicles form the intervertebral foramen, and the intervertebral foramen runs through the nerve. The vertebral foramina of adjacent vertebral bodies forms the spinal canal, which houses the nerves and spinal cord. The pedicle is adjacent to the spinal canal and the intervertebral foramen below, so special attention should be paid to this structure during spinal surgery. In clinical practice, the pedicle screw passes through this position, so accurate placement of the pedicle screw is the key to the success of the operation. For example, in the clinical treatment of vertebral body compression fractures, it is necessary to drive pedicle screws into the adjacent upper and lower vertebral bodies of the compressed vertebral body for fixation, one on each side of the vertebral body, and then expand with the help of the screw-rod system. Pedicle screws need to be driven into the pedicle many times with the help of X-ray fluoroscopy, which brings a lot of radiation to the patient and the operator. The most important problem is that the two pedicle screws are often driven asymmetrically. Fixed instability, or even fixed failure. Therefore, how to accurately drive pedicle screws on both sides of the vertebral body in clinical operations should not only prevent the pedicle screws from entering the spinal canal or detaching from the vertebral body, but also maintain the symmetry of the pedicle screws on both sides, so that Consistent control and the need to complete it as soon as possible to reduce radiation has always been a difficult problem that plagues pedicle surgery and needs to be resolved urgently.
发明内容Contents of the invention
本发明所要解决的技术问题是提供一种置入椎弓根螺钉的可调式导向装置，这种装置可以保证两枚椎弓根螺钉准确对称打入，保证把持强度均匀一致，同时可以大大减少手术时间，减少医生和患者受到的X线辐射。The technical problem to be solved by the present invention is to provide an adjustable guiding device for inserting pedicle screws. This device can ensure accurate and symmetrical driving of two pedicle screws, ensure uniform holding strength, and can greatly reduce the number of operations. time, reducing the X-ray radiation received by doctors and patients.
解决上述技术问题的技术方案是：The technical scheme that solves the above-mentioned technical problem is:
一种置入椎弓根螺钉的可调式导向装置，它包括棘突螺钉、弧形滑板、导向套筒，棘突螺钉为长钉，棘突螺钉的前端有螺纹，弧形滑板为宽度相等的长条弧形，弧形滑板的板面与棘突螺钉在同一平面上，棘突螺钉的后部与弧形滑板的中点垂直连接，弧形滑板在棘突螺钉的两侧对称分布，弧形滑板在棘突螺钉两侧的板面上有对称的刻度，导向套筒为细长的圆杆，圆杆的中心有导向孔，导向孔的孔径与椎弓根螺钉的外径相匹配，导向套筒的杆体与棘突螺钉、弧形滑板组成的平面平行，导向套筒的杆体与弧形滑板相垂直，导向套筒上部与弧形滑板为滑动连接。An adjustable guiding device for inserting pedicle screws, which includes spinous process screws, arc-shaped sliding plates, and guide sleeves, the spinous process screws are long nails, the front ends of the spinous process screws are threaded, and the arc-shaped sliding plates are equal in width Long and arc-shaped, the surface of the arc-shaped skateboard is on the same plane as the spinous process screw, the rear of the spinous process screw is vertically connected with the midpoint of the arc-shaped skateboard, and the arc-shaped skateboard is symmetrically distributed on both sides of the spinous process screw. There are symmetrical scales on the two sides of the spinous process screw on the shaped slide plate. The guide sleeve is a slender round rod. There is a guide hole in the center of the round rod. The diameter of the guide hole matches the outer diameter of the pedicle screw. The rod body of the guide sleeve is parallel to the plane formed by the spinous process screw and the arc-shaped slide plate, the rod body of the guide sleeve is perpendicular to the arc-shaped slide plate, and the upper part of the guide sleeve is slidingly connected to the arc-shaped slide plate.
上述置入椎弓根螺钉的可调式导向装置，所述棘突螺钉与置入的椎弓根螺钉杆体之间有夹角，弧形滑板的弯曲弧度与该夹角相匹配。In the above-mentioned adjustable guide device for inserting pedicle screws, there is an included angle between the spinous process screw and the rod body of the inserted pedicle screw, and the curved radian of the arc-shaped sliding plate matches the included angle.
上述置入椎弓根螺钉的可调式导向装置，所述弧形滑板由前板面、后板面、上板面、下板面组成截面为长方形的滑板套筒，滑板套筒内有长方形内孔，滑板套筒的后板面上有沿着弧形滑板长度方向的长槽，导向套筒的上端有向前凸起的滑块，滑块与导向套筒之间有连接杆相连接，滑块的截面与滑板套筒的长方形内孔相匹配，导向套筒的滑块嵌入在滑板套筒的长方形内孔中，滑块与导向套筒的连接杆位于长槽中，滑块与长方形内孔为滑动配合，滑板套筒的前板面上有顶紧螺孔，顶紧螺钉穿过顶紧螺孔与导向套筒的滑块顶紧。For the above-mentioned adjustable guide device for inserting pedicle screws, the arc-shaped slide plate is composed of a front plate surface, a rear plate surface, an upper plate surface, and a lower plate surface. There is a long groove along the length direction of the arc-shaped slide on the rear surface of the skateboard sleeve. There is a slider protruding forward on the upper end of the guide sleeve. There is a connecting rod between the slider and the guide sleeve. The cross section of the slider matches the rectangular inner hole of the slider sleeve, the slider of the guide sleeve is embedded in the rectangular inner hole of the slider sleeve, the connecting rod between the slider and the guide sleeve is located in the long groove, and the slider and the rectangular The inner hole is a sliding fit, and there are jacking screw holes on the front plate surface of the slide plate sleeve, and the jacking screws pass through the jacking screw holes and are tightened with the slider of the guide sleeve.
上述置入椎弓根螺钉的可调式导向装置，所述导向套筒的上端有向前凸起的长方形套环，长方形套环有长方形内孔，长方形内孔的截面与弧形滑板板面的截面相匹配，导向套筒的长方形套环的内孔套在弧形滑板的外周，长方形套环的内孔与弧形滑板的外周板面为滑动配合，长方形套环的环面上有顶紧螺孔，顶紧螺钉穿过顶紧螺孔与弧形滑板的板面顶紧。For the above-mentioned adjustable guide device for inserting pedicle screws, the upper end of the guide sleeve has a rectangular collar protruding forward. The cross section matches, the inner hole of the rectangular collar of the guide sleeve is set on the outer periphery of the arc-shaped skateboard, the inner hole of the rectangular collar and the outer peripheral surface of the arc-shaped skateboard are a sliding fit, and the ring surface of the rectangular collar has a top tight screw hole, the jacking screw passes through the jacking screw hole and the board surface of the curved slide plate is tightened.
上述置入椎弓根螺钉的可调式导向装置，所述棘突螺钉长度为150-200㎜，直径为3-6㎜，棘突螺钉的前端有50-60㎜的螺纹。For the above-mentioned adjustable guide device for inserting pedicle screws, the length of the spinous process screw is 150-200mm, the diameter is 3-6mm, and the front end of the spinous process screw has a thread of 50-60mm.
上述置入椎弓根螺钉的可调式导向装置，所述导向套筒的上部靠近弧形滑板的外径为20-30㎜，导向套筒的下部靠近椎体的外径为8-12㎜，导向套筒的导向孔直径为4-8㎜，导向套筒的长度为120-160㎜。For the above-mentioned adjustable guide device for inserting pedicle screws, the outer diameter of the upper part of the guide sleeve close to the arc-shaped slide plate is 20-30 mm, and the outer diameter of the lower part of the guide sleeve close to the vertebral body is 8-12 mm. The diameter of the guide hole of the guide sleeve is 4-8 mm, and the length of the guide sleeve is 120-160 mm.
本发明的有益效果是：The beneficial effects of the present invention are:
本发明的棘突螺钉与椎体后部中点垂直固定连接，作为置入椎弓根螺钉的基准，弧形滑板在棘突螺钉的两侧对称分布，导向套筒的杆体与弧形滑板相垂直，导向套筒上部与弧形滑板为滑动连接，椎弓根螺钉沿着导向套筒的内孔打入椎体内。The spinous process screw of the present invention is vertically fixedly connected to the midpoint of the back of the vertebral body. As a reference for inserting the pedicle screw, arc-shaped slide plates are symmetrically distributed on both sides of the spinous process screw, and the rod body of the guide sleeve is aligned with the arc-shaped slide plate. Vertical, the upper part of the guide sleeve is slidingly connected with the arc-shaped slide plate, and the pedicle screw is driven into the vertebral body along the inner hole of the guide sleeve.
本发明是椎体打入椎弓根螺钉的首创，可以准确地在椎体两侧分别打入椎弓根螺钉，解决了临床手术中既要避免椎弓根螺钉进入椎管或脱离椎体，还要保持两侧的椎弓根螺钉对称，使得把持力度一致，同时要尽快完成以减少辐射的难题。The present invention is the first to drive the pedicle screws into the vertebral body, and can accurately drive the pedicle screws into the two sides of the vertebral body respectively, which solves the problem of preventing the pedicle screws from entering the spinal canal or detaching from the vertebral body during clinical operations. It is also necessary to maintain the symmetry of the pedicle screws on both sides, so that the holding force is consistent, and at the same time, it must be completed as soon as possible to reduce the problem of radiation.
本发明可以保证打入同一椎体1两侧的两根椎弓根螺钉2以同样的角度对称打入椎体1的椎弓根，最终使得椎体1骨折块获得牢靠并且对称的把持强度，同时可以大大减少手术时间，减少医生和患者受到的X线辐射，在临床手术操作中有极好的推广价值。The present invention can ensure that the two pedicle screws 2 driven into the two sides of the same vertebral body 1 are symmetrically driven into the pedicles of the vertebral body 1 at the same angle, and finally the fracture fragment of the vertebral body 1 obtains a firm and symmetrical holding strength, At the same time, it can greatly reduce the operation time, reduce the X-ray radiation received by doctors and patients, and has excellent promotion value in clinical operation.
附图说明Description of drawings
图1是本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2是弧形滑板和导向套筒的一种结构示意图；Fig. 2 is a kind of structural representation of curved slide plate and guide sleeve;
图3是弧形滑板和导向套筒的另一种结构示意图。Fig. 3 is another schematic diagram of the structure of the curved slide plate and the guide sleeve.
图中标记如下：椎体1、椎弓根螺钉2、棘突螺钉3、弧形滑板4、导向套筒5、滑板套筒6、长槽7、滑块8、连接杆9、顶紧螺钉10、长方形套环11。The marks in the figure are as follows: vertebral body 1, pedicle screw 2, spinous process screw 3, arc-shaped slide plate 4, guide sleeve 5, slide plate sleeve 6, long slot 7, slider 8, connecting rod 9, jacking screw 10. Rectangular collar 11.
具体实施方式detailed description
本发明由棘突螺钉3、弧形滑板4、导向套筒5、顶紧螺钉10组成。The present invention is made up of spinous process screw 3, arc-shaped sliding plate 4, guide sleeve 5, jacking screw 10.
图1显示，棘突螺钉3为长钉，棘突螺钉3的前端有螺纹，棘突螺钉3垂直打入到椎体1后端的中心点，作为置入椎弓根螺钉2的基准。本发明的棘突螺钉3的长度为150-200㎜，直径为3-6㎜，棘突螺钉3的前端有50-60㎜的螺纹。Fig. 1 shows that the spinous process screw 3 is a long nail, and the front end of the spinous process screw 3 has threads, and the spinous process screw 3 is driven vertically into the center point of the rear end of the vertebral body 1 as a benchmark for inserting the pedicle screw 2. The spinous process screw 3 of the present invention has a length of 150-200mm and a diameter of 3-6mm, and the front end of the spinous process screw 3 has a thread of 50-60mm.
图1显示，弧形滑板4为宽度相等的长条弧形，弧形滑板4的板面与棘突螺钉3在同一平面上，棘突螺钉3的后部与弧形滑板4的中点垂直连接，弧形滑板4在棘突螺钉3的两侧对称分布，弧形滑板4在棘突螺钉3两侧的板面上有对称的刻度。弧形滑板4同样是置入椎弓根螺钉2的基准，在置入椎弓根螺钉2的过程中与棘突螺钉3固定不动。Figure 1 shows that the arc-shaped slide 4 is a long arc with equal width, the surface of the arc-shaped slide 4 is on the same plane as the spinous process screw 3, and the rear part of the spinous process screw 3 is perpendicular to the midpoint of the arc-shaped slide 4 connection, the arc-shaped slide plate 4 is distributed symmetrically on both sides of the spinous process screw 3 , and the arc-shaped slide plate 4 has symmetrical scales on the board surfaces on both sides of the spinous process screw 3 . The arc-shaped sliding plate 4 is also the benchmark for placing the pedicle screw 2 , and is fixed with the spinous process screw 3 during the process of placing the pedicle screw 2 .
图1显示，棘突螺钉3与置入的椎弓根螺钉2杆体之间有夹角，弧形滑板4的弯曲弧度与该夹角相匹配。弧形滑板4的弯曲弧度太大将会导致椎弓根螺钉2杆体有可能过于靠近椎体1的椎孔，甚至碰到椎管的神经组织；弧形滑板4的弯曲弧度太小，即弧形滑板4太直，有可能导致椎弓根螺钉2杆体与棘突螺钉3之间的夹角太小，椎弓根螺钉2杆体脱出椎体1外，失去固定的牢度。FIG. 1 shows that there is an included angle between the spinous process screw 3 and the rod body of the inserted pedicle screw 2, and the curved arc of the arc-shaped sliding plate 4 matches the included angle. If the curvature of the curved slide 4 is too large, the rod body of the pedicle screw 2 may be too close to the vertebral foramen of the vertebral body 1, or even touch the nerve tissue of the spinal canal; if the curvature of the curved slide 4 is too small, that is, the arc If the slide plate 4 is too straight, the angle between the rod body of the pedicle screw 2 and the spinous process screw 3 may be too small, and the rod body of the pedicle screw 2 protrudes from the vertebral body 1, thus losing the fastness of fixation.
图1显示，弧形滑板4上的刻度为角度刻度，即导向套筒5的中心轴线移动到该刻度时，导向套筒5中的椎弓根螺钉2的杆体即与棘突螺钉3之间的夹角等于该刻度显示的角度。弧形滑板4上面自中间向两边依次为有3°-16°等14个度数，并且在这14个度数的位置分别有用于瞄定椎弓根螺钉2的凹槽。Figure 1 shows that the scale on the arc-shaped slide plate 4 is an angle scale, that is, when the central axis of the guide sleeve 5 moves to this scale, the rod body of the pedicle screw 2 in the guide sleeve 5 and the spinous process screw 3 The included angle is equal to the angle displayed on the scale. There are 14 degrees such as 3°-16° on the arc-shaped slide plate 4 from the middle to both sides successively, and there are grooves for aiming at the pedicle screws 2 at the positions of these 14 degrees.
图1显示，导向套筒5为细长的圆杆，圆杆的中心有导向孔，导向孔的孔径与椎弓根螺钉2的外径相匹配，导向套筒5的杆体与棘突螺钉3、弧形滑板4组成的平面平行，导向套筒5的杆体与弧形滑板4相垂直，导向套筒5上部与弧形滑板4为滑动连接。采用这样的结构，导向套筒5可以沿着弧形滑板4任意滑移，从而保证打入同一椎体1两侧的两根椎弓根螺钉2以同样的角度对称打入椎体1的椎弓根，最终使得椎体1骨折块获得牢靠并且对称的把持强度。Figure 1 shows that the guide sleeve 5 is a slender round rod, and the center of the round rod has a guide hole. 1. The planes formed by the curved slide plate 4 are parallel, the body of the guide sleeve 5 is perpendicular to the curved slide plate 4, and the guide sleeve 5 top is slidingly connected with the curved slide plate 4. With such a structure, the guide sleeve 5 can slide arbitrarily along the arc-shaped slide plate 4, so as to ensure that the two pedicle screws 2 driven into the two sides of the same vertebral body 1 are symmetrically driven into the vertebral body 1 at the same angle. The pedicle ultimately enables the vertebral body 1 fracture to obtain a firm and symmetrical holding strength.
导向套筒5的上部靠近弧形滑板4的外径为20-30㎜，导向套筒5的下部靠近椎体1的外径为8-12㎜，导向套筒5的导向孔直径为4-8㎜，导向套筒5的长度为120-160㎜。The outer diameter of the upper part of the guide sleeve 5 close to the arc-shaped slide plate 4 is 20-30 mm, the outer diameter of the lower part of the guide sleeve 5 close to the vertebral body 1 is 8-12 mm, and the diameter of the guide hole of the guide sleeve 5 is 4-30 mm. 8mm, the length of the guide sleeve 5 is 120-160mm.
图2显示，本发明的弧形滑板4和导向套筒5的一种结构是滑槽式。具体结构是，弧形滑板4由前板面、后板面、上板面、下板面组成截面为长方形的滑板套筒6，滑板套筒6内有长方形内孔，滑板套筒6的后板面上有沿着弧形滑板4长度方向的长槽7。与之相对应的导向套筒5的上端有向前凸起的滑块8，滑块8与导向套筒5之间有连接杆9相连接，滑块8的截面与滑板套筒6的长方形内孔相匹配，导向套筒5的滑块8嵌入在滑板套筒6的长方形内孔中，滑块8与导向套筒5的连接杆9位于长槽7中，滑块8与长方形内孔为滑动配合。在滑板套筒6的前板面上有顶紧螺孔，顶紧螺钉10穿过顶紧螺孔与导向套筒5的滑块8顶紧。Fig. 2 shows that a structure of the curved slide plate 4 and the guide sleeve 5 of the present invention is a chute type. The specific structure is that the curved slide plate 4 is composed of the front plate surface, the rear plate surface, the upper plate surface and the lower plate surface and is a rectangular slide plate sleeve 6 with a cross section. There is a rectangular inner hole in the slide plate sleeve 6. Long slots 7 along the lengthwise direction of the curved slide plate 4 are arranged on the board surface. The upper end of the corresponding guide sleeve 5 has a slider 8 protruding forward. There is a connecting rod 9 between the slider 8 and the guide sleeve 5 to connect. The inner holes are matched, the slider 8 of the guide sleeve 5 is embedded in the rectangular inner hole of the skateboard sleeve 6, the slider 8 and the connecting rod 9 of the guide sleeve 5 are located in the long groove 7, the slider 8 and the rectangular inner hole For a slip fit. There are jacking screw holes on the front plate surface of the slide plate sleeve 6 , and the jacking screws 10 pass through the jacking screw holes and are tightened with the slide block 8 of the guide sleeve 5 .
图3显示，本发明的弧形滑板4和导向套筒5的另一种结构是套环式。具体结构是，导向套筒5的上端有向前凸起的长方形套环11，长方形套环11有长方形内孔，长方形内孔的截面与弧形滑板4板面的截面相匹配，导向套筒5的长方形套环11的内孔套在弧形滑板4的外周，长方形套环11的内孔与弧形滑板4的外周板面为滑动配合，长方形套环10的环面上有顶紧螺孔，顶紧螺钉10穿过顶紧螺孔与弧形滑板4的板面顶紧。Fig. 3 shows that another structure of the curved slide plate 4 and the guide sleeve 5 of the present invention is a collar type. The specific structure is that the upper end of the guide sleeve 5 has a rectangular collar 11 protruding forward, and the rectangular collar 11 has a rectangular inner hole. The inner hole of the rectangular collar 11 of 5 is sleeved on the outer periphery of the arc skateboard 4, and the inner hole of the rectangular collar 11 and the outer peripheral plate surface of the arc skateboard 4 are sliding fits, and the ring surface of the rectangular collar 10 has a top tightening screw. Holes, the jacking screw 10 passes the jacking screw hole and the plate surface of the arc slide plate 4 and is tight.
本发明的使用过程如下：The use process of the present invention is as follows:
首先将棘突螺钉3垂直打入到椎体1后端的中心点，作为置入椎弓根螺钉2的基准。Firstly, the spinous process screw 3 is vertically driven into the center point of the rear end of the vertebral body 1 as a reference for placing the pedicle screw 2 .
然后经过X射线确定椎弓根螺钉2在椎体1的进针点和进针夹角。Then, the needle insertion point and needle insertion angle of the pedicle screw 2 in the vertebral body 1 are determined through X-rays.
在弧形滑板4是移动导向套筒5，使导向套筒5的前端对准进针点，通过观察弧形滑板4上的刻度使导向套筒5的轴线与进针夹角相重合，通过顶紧螺钉10将导向套筒5与弧形滑板4固定。The guide sleeve 5 is moved on the arc-shaped slide plate 4, so that the front end of the guide sleeve 5 is aligned with the needle entry point. By observing the scale on the arc-shaped slide plate 4, the axis of the guide sleeve 5 coincides with the needle-entry angle. The tightening screw 10 fixes the guide sleeve 5 and the curved slide plate 4 .
沿着导向套筒5向椎体1置入椎弓根螺钉2。The pedicle screw 2 is inserted into the vertebral body 1 along the guide sleeve 5 .
再将导向套筒5从棘突螺钉3的另一侧进行置入椎弓根螺钉2的操作，保证打入同一椎体1两侧的两根椎弓根螺钉2以同样的角度对称打入椎体1的椎弓根，最终使得椎体1骨折块获得牢靠并且对称的把持强度。Then insert the guide sleeve 5 into the pedicle screw 2 from the other side of the spinous process screw 3 to ensure that the two pedicle screws 2 driven into the same vertebral body 1 are symmetrically driven in at the same angle The pedicle of vertebral body 1 finally makes the fracture fragment of vertebral body 1 obtain a firm and symmetrical holding strength.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610889429.XACN106510830A (en) | 2016-10-12 | 2016-10-12 | Adjustable guiding device for imbedding pedicle screw |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610889429.XACN106510830A (en) | 2016-10-12 | 2016-10-12 | Adjustable guiding device for imbedding pedicle screw |
| Publication Number | Publication Date |
|---|---|
| CN106510830Atrue CN106510830A (en) | 2017-03-22 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610889429.XAPendingCN106510830A (en) | 2016-10-12 | 2016-10-12 | Adjustable guiding device for imbedding pedicle screw |
| Country | Link |
|---|---|
| CN (1) | CN106510830A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111772766A (en)* | 2020-08-12 | 2020-10-16 | 邓迎生 | Pedicle channel screw two-dimensional guide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4784126A (en)* | 1983-10-04 | 1988-11-15 | South African Inventions Development Corporation | Surgical device |
| US20090171360A1 (en)* | 1997-02-12 | 2009-07-02 | Whelan Jeffery M | Apparatus for loading tendons into the knee |
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| CN203852418U (en)* | 2014-05-27 | 2014-10-01 | 田红波 | Sliding positioning guide |
| CN105935313A (en)* | 2016-05-04 | 2016-09-14 | 同济大学 | Simple pedicle screw placement navigator |
| CN206355128U (en)* | 2016-10-12 | 2017-07-28 | 河北医科大学第三医院 | A kind of adjustable guide device for inserting pedicle screw |
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|---|---|---|---|---|
| CN111772766A (en)* | 2020-08-12 | 2020-10-16 | 邓迎生 | Pedicle channel screw two-dimensional guide |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | Application publication date:20170322 |