技术领域Technical Field
本发明属于医疗器械技术领域，尤其涉及股骨颈骨折固定器械，具体涉及一种动力滑动加压抗牵张螺钉。The invention belongs to the technical field of medical devices, and in particular relates to a femoral neck fracture fixation device, and specifically relates to a dynamic sliding compression anti-tension screw.
背景技术Background technique
股骨骨折的是一种常发性骨折，在股骨骨折中股骨颈骨折也占据了比较大的比例，其可发生于各个年龄段。Femoral fracture is a common fracture, among which femoral neck fracture accounts for a relatively large proportion, and it can occur in all age groups.
目前临床通常使用多根或单根固定钉的方式对骨折的股骨颈进行复位固定，股骨颈骨折复位固定后，有3个因素是促进骨折愈合的关键因素，第一是血运通畅，第二是骨面的稳定，第三是骨面加压；而骨面加压是一个相对好控制的因素，如何有效保证始终存在有骨面加压对股骨颈的恢复意义巨大。At present, multiple or single fixation nails are usually used in clinical practice to reduce and fix the fractured femoral neck. After the reduction and fixation of the femoral neck fracture, there are three key factors that promote fracture healing. The first is smooth blood circulation, the second is the stability of the bone surface, and the third is bone surface pressure. Bone surface pressure is a relatively easy-to-control factor. How to effectively ensure that there is always bone surface pressure is of great significance to the recovery of the femoral neck.
本发明针对上述技术问题，提供了一种动力滑动加压抗牵张螺钉。In view of the above technical problems, the present invention provides a dynamic sliding compression anti-tension screw.
发明内容Summary of the invention
一种动力滑动加压抗牵张螺钉，其包括：螺钉主体，先进入体内端为钉头端，相反的一端为钉尾端，其上对应设置有，A dynamic sliding compression anti-tension screw comprises: a screw body, the end that first enters the body is the screw head end, and the opposite end is the screw tail end, which is correspondingly provided with:
钉头螺纹段，设置在钉头端，钉头螺纹段的单圈螺纹结构包含有引导进钉曲面及阻挡退钉锚定面，引导进钉曲面的第一端为靠近钉头端，引导进钉曲面的第二端为远离钉头端，引导进钉曲面的第二端与阻挡退钉锚定面连接，且引导进钉曲面第一端的直径小于引导进钉曲面第二端的直径；The nail head thread section is arranged at the nail head end, and the single-turn thread structure of the nail head thread section includes a nail-introducing curved surface and a nail-retracting blocking anchor surface, wherein the first end of the nail-introducing curved surface is close to the nail head end, the second end of the nail-introducing curved surface is far away from the nail head end, the second end of the nail-introducing curved surface is connected to the nail-retracting blocking anchor surface, and the diameter of the first end of the nail-introducing curved surface is smaller than the diameter of the second end of the nail-introducing curved surface;
钉尾螺纹段，设置在钉尾端，钉尾螺纹段的单圈螺纹结构包含有引导退钉曲面及阻挡进钉锚定面，引导退钉曲面的第一端为靠近钉尾端，引导退钉曲面的第二端为远离钉尾端，引导退钉曲面的第二端与阻挡进钉锚定面连接，且引导退钉曲面第一端的直径小于引导退钉曲面第二端的直径；A nail tail thread section is arranged at the nail tail end, and the single-turn thread structure of the nail tail thread section includes a nail withdrawal guiding curved surface and a nail entry blocking anchoring surface, wherein the first end of the nail withdrawal guiding curved surface is close to the nail tail end, the second end of the nail withdrawal guiding curved surface is far away from the nail tail end, the second end of the nail withdrawal guiding curved surface is connected to the nail entry blocking anchoring surface, and the diameter of the first end of the nail withdrawal guiding curved surface is smaller than the diameter of the second end of the nail withdrawal guiding curved surface;
钉头螺纹段与钉尾螺纹的的螺纹方向一致。The thread direction of the nail head thread section is consistent with that of the nail tail thread.
注：骨折近端骨块为股骨头对应侧的骨块，骨折远端骨块为远离股骨头对应侧的骨块。Note: The proximal bone fragment is the bone fragment on the corresponding side of the femoral head, and the distal bone fragment is the bone fragment away from the corresponding side of the femoral head.
进一步，除边缘的过渡螺纹结构外，中间的螺纹结构上的引导进钉曲面与引导退钉曲面形状相同或相似；阻挡退钉锚定面与阻挡进钉锚定面形状相同或相似；阻挡退钉锚定面朝向钉尾端，阻挡进钉锚定面朝向钉头端。Furthermore, except for the transition thread structure at the edge, the curved surface guiding the nail entry on the middle thread structure is the same or similar in shape to the curved surface guiding the nail withdrawal; the anchor surface blocking the nail withdrawal is the same or similar in shape to the anchor surface blocking the nail entry; the anchor surface blocking the nail withdrawal faces the tail end of the nail, and the anchor surface blocking the nail entry faces the head end of the nail.
进一步，中间的螺纹结构上的引导进钉曲面与引导退钉曲面大小相同；阻挡退钉锚定面与阻挡进钉锚定面形状大小相同；阻挡退钉锚定面朝向钉尾端，阻挡进钉锚定面朝向钉头端。Furthermore, the curved surface guiding nail insertion and the curved surface guiding nail withdrawal on the middle threaded structure are of the same size; the anchoring surface blocking nail withdrawal and the anchoring surface blocking nail insertion are of the same shape and size; the anchoring surface blocking nail withdrawal faces the tail end of the nail, and the anchoring surface blocking nail insertion faces the head end of the nail.
进一步，钉头螺纹段与钉尾螺纹段除朝向不同，螺纹结构的圈数，钉头螺纹段与钉尾螺纹段相对的螺纹结构设置相同；此种设置保证钉头螺纹段与钉尾螺纹段给予骨面的压力基本一致，避免因给骨面的压力不同而对骨面造成不良影响。Furthermore, except for the different directions, the number of turns of the thread structure, and the relative thread structure settings of the nail head thread section and the nail tail thread section are the same; this setting ensures that the pressure applied to the bone surface by the nail head thread section and the nail tail thread section is basically the same, avoiding adverse effects on the bone surface due to different pressures applied to the bone surface.
进一步，阻挡退钉锚定面垂直于螺钉主体纵轴，或者阻挡退钉锚定面自外侧向内侧朝向钉头螺纹段的第一端倾斜；阻挡进钉锚定面垂直于螺钉主体纵轴，或者阻挡进钉锚定面自外侧向内侧朝向钉尾螺纹段的第一端倾斜。Furthermore, the anchoring surface for preventing the nail from being withdrawn is perpendicular to the longitudinal axis of the screw body, or the anchoring surface for preventing the nail from being withdrawn is inclined from the outside to the inside toward the first end of the nail head thread segment; the anchoring surface for preventing the nail from being advanced is perpendicular to the longitudinal axis of the screw body, or the anchoring surface for preventing the nail from being advanced is inclined from the outside to the inside toward the first end of the nail tail thread segment.
进一步：固定钉尾端设置尾帽，尾帽第一端为钉尾端方向的一端，尾帽第二端端部位置开始设置钉尾螺纹段。Further: a tail cap is arranged at the tail end of the fixed nail, the first end of the tail cap is one end in the direction of the tail end of the nail, and a nail tail thread section is arranged starting from the end position of the second end of the tail cap.
进一步，钉头螺纹段的第一端为钉头端，钉头螺纹段的第一端设置多个构建自攻尖的倾斜槽一，优选设置2-3个倾斜槽一。Furthermore, the first end of the nail head thread segment is the nail head end, and the first end of the nail head thread segment is provided with a plurality of inclined grooves 1 constituting a self-tapping tip, preferably 2-3 inclined grooves 1 are provided.
进一步，钉尾螺纹段的第一端为远离钉尾端的一端，钉尾螺纹段的第一端设置构建自攻结构的倾斜槽二，设置2-3个倾斜槽二。Furthermore, the first end of the nail tail thread segment is an end away from the nail tail end, and the first end of the nail tail thread segment is provided with an inclined groove 2 for constructing a self-tapping structure, and 2-3 inclined grooves 2 are provided.
本发明还公开了一种用于股骨颈骨折的固定器械，固定器械包括1根上述动力滑动加压抗牵张螺钉或者2根平行设置的动力滑动加压抗牵张螺钉。The invention also discloses a fixation device for femoral neck fracture, which comprises one of the above-mentioned dynamic sliding compression anti-tension screws or two parallel-arranged dynamic sliding compression anti-tension screws.
本发明还公开了一种包含上述抗牵张螺钉的固定板，固定板上设置钉孔，牵张螺钉通过钉孔进入股骨内与固定板结合完成股骨复位固定。The present invention also discloses a fixing plate including the anti-tension screws. The fixing plate is provided with nail holes. The tension screws enter the femur through the nail holes and combine with the fixing plate to complete the reduction and fixation of the femur.
本发明还公开了一种包含上述抗牵张螺钉的固定板，固定板上设置套筒，牵张螺钉通过套筒进入股骨内与固定板结合完成股骨复位固定；套筒第一端为钉尾段方向的一端；牵张螺钉自套筒第二端伸出，且钉尾螺纹段也自套筒第二端端部伸出。The present invention also discloses a fixing plate including the above-mentioned anti-tension screw, wherein a sleeve is arranged on the fixing plate, and the tension screw enters into the femur through the sleeve and combines with the fixing plate to complete the reduction and fixation of the femur; the first end of the sleeve is one end in the direction of the nail tail section; the tension screw extends from the second end of the sleeve, and the nail tail thread section also extends from the second end of the sleeve.
本发明的有益效果为：The beneficial effects of the present invention are:
1）抗牵张螺钉在旋入过程中，钉头螺纹段与钉尾螺纹段都旋入到股骨后，因为引导进钉结构与引导退钉结构分别设置在钉头与钉尾位置，且对应连接有阻挡退钉锚定面与阻挡进钉锚定面的设置，通过钉尾端的引导退钉结构向钉头端的阻挡退钉锚定面施加一个退钉的力量，而钉头端的引导进钉结构向钉尾端的阻挡进钉锚定面施加一个进钉的力量，这样就会带动带有钉头螺纹段的骨折近端骨块与带有钉尾螺纹段的骨折远端骨块有相互靠近的运动趋势，从而使骨折面的接触压力增加；此种设置达到双向给骨折面施压的效果。1) During the screwing-in process of the anti-tension screw, after both the screw head threaded section and the screw tail threaded section are screwed into the femur, because the guide screw entry structure and the guide screw withdrawal structure are respectively arranged at the screw head and the screw tail, and are correspondingly connected with the settings of the screw withdrawal blocking anchor surface and the screw entry blocking anchor surface, a screw withdrawal force is applied to the screw withdrawal blocking anchor surface at the screw head end by the guide screw withdrawal structure at the screw tail end, and a screw entry force is applied to the screw entry blocking anchor surface at the screw head end by the guide screw entry structure at the screw head end, which will drive the proximal bone fragment of the fracture with the screw head threaded section and the distal bone fragment of the fracture with the screw tail threaded section to move closer to each other, thereby increasing the contact pressure of the fracture surface; this setting achieves the effect of applying pressure to the fracture surface in both directions.
2）支撑力量发挥作用的退钉过程中，由引导退钉曲面的带动固定钉滑动退钉，退钉的同时因为阻挡退钉锚定面的存在，阻挡退钉锚定面会给予骨折近端骨块一个朝向退钉方向的力量，而这个力量能够实现向骨折断面的施压，增加压力会促进骨折断面的愈合，另外因为引导退钉曲面的设置，退钉过程需要克服的引导退钉曲面的回退阻力，有效的减少退钉的幅度，也能够有效的避免由固定钉直接滑动退出造成的股骨颈缩短的问题。2) During the nail withdrawal process when the supporting force comes into play, the fixed nail is driven by the guiding nail withdrawal surface to slide and withdraw. At the same time, due to the existence of the blocking nail withdrawal anchoring surface, the blocking nail withdrawal anchoring surface will give the proximal bone block of the fracture a force in the direction of nail withdrawal, and this force can achieve pressure on the fracture section. Increasing the pressure will promote the healing of the fracture section. In addition, due to the setting of the guiding nail withdrawal surface, the withdrawal process needs to overcome the retreat resistance of the guiding nail withdrawal surface, which effectively reduces the amplitude of nail withdrawal and can also effectively avoid the problem of femoral neck shortening caused by the direct sliding withdrawal of the fixed nail.
3）牵张力量发挥作用的进钉趋势过程中，牵张力量给予固定钉一个向内移动的力量，这样阻挡进钉锚定面接收到力量后就会给予骨折面远端骨块一个向内移动的力量，这个向内移动的力量会促使骨折的骨面维持一个加压的效果，阻挡进钉锚定面也给固定钉的向内牵张提供了较大的阻力，这个阻力与牵张力量发生抵消，达到了避免固定钉向内牵张移动的效果。3) During the nail advancement process under the action of the distraction force, the distraction force gives the fixation nail a force to move inwards. After receiving the force, the anchoring surface that blocks the nail advancement will give the bone block distal to the fracture surface a force to move inwards. This inward movement force will prompt the fractured bone surface to maintain a pressurized effect. The anchoring surface that blocks the nail advancement also provides a greater resistance to the inward distraction of the fixation nail. This resistance offsets the distraction force, thereby achieving the effect of preventing the fixation nail from moving inwards.
4）钉头螺纹段与钉尾螺纹段除朝向不同，螺纹结构的圈数，钉头螺纹段与钉尾螺纹段相对的螺纹结构设置相同，保证提供的引导力量与锚定力量一致，保证进钉与退钉过程中的力量一致。4) The head thread segment and the tail thread segment have the same thread structure setting except for the different directions, the number of turns of the thread structure, and the relative thread structure settings of the head thread segment and the tail thread segment, to ensure that the guiding force provided is consistent with the anchoring force, and to ensure that the force during the insertion and withdrawal of the nail is consistent.
5）锚定面垂直螺钉主体或倾斜设置的技术方案保证锚定面能够有效稳定的形成锚定作用。5) The technical solution of the anchoring surface being perpendicular to the screw body or inclined ensures that the anchoring surface can effectively and stably form an anchoring effect.
6）尾帽第二端端部位置开始设置钉尾螺纹段，保证钉尾螺纹段设置在骨质内有效发挥作用。6) The nail tail thread section is set at the second end of the tail cap to ensure that the nail tail thread section is set in the bone and plays an effective role.
7）倾斜槽一与倾斜槽二的上述设置保证钉头螺纹段与钉尾螺纹段都形成自攻效果，保证整个固定钉的旋转自攻进入。7) The above-mentioned arrangement of the inclined groove 1 and the inclined groove 2 ensures that both the nail head thread section and the nail tail thread section form a self-tapping effect, ensuring the rotational self-tapping entry of the entire fixing nail.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明螺钉整体结构示意图；FIG1 is a schematic diagram of the overall structure of a screw according to the present invention;
图2为本发明螺钉纵向剖视结构示意图；FIG2 is a schematic diagram of a longitudinal cross-sectional structure of a screw according to the present invention;
图3为本发明钉头螺纹段局部放大下侧面观结构示意图；FIG3 is a schematic diagram of a partially enlarged lower side view of a nail head thread segment of the present invention;
图4为本发明钉头螺纹段纵向剖视局部放大结构示意图；FIG4 is a partial enlarged structural schematic diagram of a longitudinal cross-section of a nail head thread segment of the present invention;
图5为本发明钉尾螺纹段局部放大结构示意图；FIG5 is a schematic diagram of a partially enlarged structure of a nail tail thread section of the present invention;
图6为本发明钉尾螺纹段纵向剖视局部放大结构示意图；FIG6 is a partial enlarged structural schematic diagram of a longitudinal cross-section of a nail tail thread section of the present invention;
图7为本发明实施例2固定器械设置到股骨颈骨折位置的股骨结构示意图；7 is a schematic diagram of the femoral structure of a fixation device according to Embodiment 2 of the present invention set at the location of a femoral neck fracture;
图8为本发明股骨距内侧皮质支撑完整的股骨颈骨折内固定术后固定钉钉头部分受力顺序示意图，注：①股骨距内侧皮质支撑发挥主压力骨小梁支撑作用力，产生退钉趋势；②固定钉钉头部分受股骨头内翻应力牵张发挥主张力骨小梁牵张作用力，产生内移趋势；FIG8 is a schematic diagram of the force sequence of the head of the fixation nail after internal fixation of a femoral neck fracture with intact medial cortical support of the femoral calcar according to the present invention, Note: ① the medial cortical support of the femoral calcar exerts the main pressure trabecular support force, resulting in a tendency to withdraw the nail; ② the head of the fixation nail is stretched by the varus stress of the femoral head and exerts the main force trabecular stretching force, resulting in a tendency to move inward;
主要附图标记说明Description of main reference numerals
1、钉头螺纹段；11、引导进钉曲面；12、阻挡退钉锚定面；13、倾斜槽一；2、钉尾螺纹段；21、引导退钉曲面；22、阻挡进钉锚定面；23、倾斜槽二；3、中间段；4、尾帽；41、操作孔。1. Nail head threaded section; 11. Nail guiding curved surface; 12. Nail withdrawal blocking anchoring surface; 13. Inclined groove 1; 2. Nail tail threaded section; 21. Nail withdrawal guiding curved surface; 22. Nail withdrawal blocking anchoring surface; 23. Inclined groove 2; 3. Middle section; 4. Tail cap; 41. Operation hole.
具体实施方式Detailed ways
临床中，股骨颈或股骨转子等股骨头区域的股骨骨折，经常采用的方式为髓内钉设置到髓腔内固定的方式，直接利用固定钉直接固定的方式，还有利用截骨板配合固定钉固定的方式，划分为髓腔内固定及髓腔外固定，但不管是髓腔内固定还是髓腔外固定，复位固定治疗及康复过程中存在有2个过程，第一个过程是出现固定钉的退钉；第二个过程是退钉到一定程度后，退钉停止，会反向出现一个固定钉再次进钉的过程。经过多年的临床观察发现，固定钉的退钉促进骨面加压，对股骨颈的愈合有正向促进效果，但退钉幅度大则会造成股骨颈的缩短，而退钉停止后的反向进钉，则会出现骨折断面的内翻，造成骨折的骨面失去加压效果，对股骨颈的愈合有反向的抑制作用。In clinical practice, for femoral fractures in the femoral neck or femoral trochanter and other femoral head areas, the methods often used are intramedullary nails set into the intramedullary cavity for fixation, direct fixation with fixation nails, and fixation with osteotomy plates and fixation nails, which are divided into intramedullary fixation and extramedullary fixation. However, regardless of intramedullary fixation or extramedullary fixation, there are two processes in the reduction, fixation, treatment and rehabilitation process. The first process is the withdrawal of the fixation nail; the second process is that after the nail is withdrawn to a certain extent, the withdrawal of the nail stops, and a process of re-entering the fixation nail will occur in the reverse direction. After years of clinical observation, it has been found that the withdrawal of the fixation nail promotes bone surface pressure and has a positive effect on the healing of the femoral neck. However, a large withdrawal of the nail will cause the shortening of the femoral neck, and the reverse advancement of the nail after the withdrawal of the nail stops will cause the fracture section to be inverted, causing the fracture bone surface to lose the pressure effect, which has a reverse inhibitory effect on the healing of the femoral neck.
临床中一直在找寻出现上述现象的原因，如果能了解出现上述现象的原理，根据出现的原理进行对应的治疗器械与治疗方案的设计将会对股骨颈骨折的恢复起到非常好的促进作用。本次发明人在杠杆平衡理论的基础下，结合生活中的塔吊，传统压水井系统；对上述的退钉及进钉现象进行分析，发现了支撑牵张效应，对应进入股骨内的钉体，当支撑力量发挥作用时，会存在有退钉的趋势，当牵张力量发挥主要作用时会存在有进钉的趋势。In the clinic, we have been looking for the reasons for the above phenomenon. If we can understand the principle of the above phenomenon and design the corresponding treatment equipment and treatment plan according to the principle, it will play a very good role in promoting the recovery of femoral neck fracture. Based on the lever balance theory, the inventor combined the tower crane and traditional water well system in life to analyze the above phenomenon of nail withdrawal and nail insertion, and found the support and tension effect. For the nail body entering the femur, when the support force plays a role, there will be a tendency to withdraw the nail, and when the tension force plays a major role, there will be a tendency to insert the nail.
具体为：针对股骨颈骨折的固定钉的治疗过程，参考图8，为一种利用传统固定钉治疗股骨颈骨折的治疗方案，具体为：当固定钉初始固定住骨折面后，患者下地负重时，固定钉会受到发挥主压力骨小梁的支撑作用力；这个支撑作用力给予固定钉一个向后滑出的力量，促使退钉现象的发生，退钉的同时，骨面压力增加，在骨面压力的正向刺激作用下，骨面愈合（对应图8中的A-B）；一旦骨面愈合，其在固定钉上的作用力发生变化，当负重时，固定钉受股骨头内翻应力牵张发挥主张力骨小梁作用，固定钉就会接收到一个向内迁移的力量，促使固定钉产生向内移趋势，但这个向内的牵张力量会使得骨折面的接触压力变小，很多时候会使骨折面一侧会重新断裂（对应图8中的B-C）。尤其是针对仅钉头位置设有一段螺纹段的固定钉，退钉及向内移动都是滑动移动的过程，过程中不会发生转动，是螺纹段牵动着股骨头对应的骨块的后退及前进过程，在后退会促使股骨颈骨折面的接触压力增加，但如果退钉幅度过大则会造成股骨颈缩短的不良后果，而前进过程则会造成新恢复的骨折面压力变小，造成的后果是使复位的骨折面儿张开，而不利于骨折愈合。Specifically, the treatment process of the fixation nail for femoral neck fracture, referring to FIG8, is a treatment plan for femoral neck fracture using a traditional fixation nail, specifically: after the fixation nail initially fixes the fracture surface, when the patient walks on the ground to bear weight, the fixation nail will be supported by the trabeculae that exert the main pressure; this supporting force gives the fixation nail a force to slide out backwards, prompting the nail to withdraw, while withdrawing the nail, the bone surface pressure increases, and under the positive stimulation of the bone surface pressure, the bone surface heals (corresponding to A-B in FIG8); once the bone surface heals, the force acting on the fixation nail changes, and when bearing weight, the fixation nail is stretched by the varus stress of the femoral head to exert the main force trabeculae, and the fixation nail will receive a force to migrate inward, prompting the fixation nail to have an inward movement trend, but this inward stretching force will reduce the contact pressure of the fracture surface, and in many cases will cause one side of the fracture surface to fracture again (corresponding to B-C in FIG8). Especially for fixation nails with only a threaded section at the nail head position, the withdrawal and inward movement are both sliding processes, and no rotation occurs during the process. It is the threaded section that drives the corresponding bone block of the femoral head to move backward and forward. The backward movement will increase the contact pressure of the femoral neck fracture surface, but if the withdrawal range is too large, it will cause the adverse consequence of shortening the femoral neck, and the forward movement process will cause the pressure of the newly restored fracture surface to decrease, resulting in the opening of the reduced fracture surface, which is not conducive to fracture healing.
股骨颈缩短的关键因素是直接的滑动退出导致骨折近端骨块后移严重；股骨头内翻应力产生的牵张力量是引起固定钉内移的关键作用力，造成骨面恢复不好；那么临床中需要一种能够有效的避免直接滑动退钉，且能够构建一个与牵张力量相反的作用力有效的抵消掉牵张力量，进而消除固定钉向内移动的趋势，使得骨面始终维持有接触压力，促进愈合。The key factor for shortening the femoral neck is direct sliding withdrawal, which leads to severe posterior displacement of the proximal bone fragment of the fracture; the tensile force generated by the varus stress of the femoral head is the key force causing the inward displacement of the fixation nail, resulting in poor bone surface recovery; therefore, clinically, a method is needed that can effectively avoid direct sliding withdrawal of the nail and can construct a force opposite to the tensile force to effectively offset the tensile force, thereby eliminating the tendency of the fixation nail to move inward, so that the bone surface always maintains contact pressure and promotes healing.
实施例1Example 1
参考图1-6；一种动力滑动加压抗牵张螺钉，其包括：螺钉主体，先进入体内端为钉头端，相反的一端为钉尾端，其上对应设置有，Referring to Figures 1-6; a dynamic sliding compression anti-tension screw, comprising: a screw body, the end that first enters the body is the nail head end, and the opposite end is the nail tail end, which is correspondingly provided with,
钉头螺纹段1，设置在钉头端，钉头螺纹段1的单圈螺纹结构包含有引导进钉曲面11及阻挡退钉锚定面12，引导进钉曲面11的第一端为靠近钉头端，引导进钉曲面11的第二端为远离钉头端，引导进钉曲面11的第二端与阻挡退钉锚定面12连接，且引导进钉曲面11第一端的直径小于引导进钉曲面11第二端的直径；A nail head thread segment 1 is arranged at the nail head end, and a single-turn thread structure of the nail head thread segment 1 includes a nail-introducing curved surface 11 and a nail-retracting blocking anchor surface 12, wherein the first end of the nail-introducing curved surface 11 is close to the nail head end, and the second end of the nail-introducing curved surface 11 is far away from the nail head end, and the second end of the nail-introducing curved surface 11 is connected to the nail-retracting blocking anchor surface 12, and the diameter of the first end of the nail-introducing curved surface 11 is smaller than the diameter of the second end of the nail-introducing curved surface 11;
钉尾螺纹段2，设置在钉尾端，钉尾螺纹段2的单圈螺纹结构包含有引导退钉曲面21及阻挡进钉锚定面22，引导退钉曲面21的第一端为靠近钉尾端，引导退钉曲面21的第二端为远离钉尾端，引导退钉曲面21的第二端与阻挡进钉锚定面22连接，且引导退钉曲面21第一端的直径小于引导退钉曲面21第二端的直径；The nail tail thread section 2 is arranged at the nail tail end. The single-turn thread structure of the nail tail thread section 2 includes a nail withdrawal guiding curved surface 21 and a nail entry blocking anchor surface 22. The first end of the nail withdrawal guiding curved surface 21 is close to the nail tail end, and the second end of the nail withdrawal guiding curved surface 21 is far away from the nail tail end. The second end of the nail withdrawal guiding curved surface 21 is connected to the nail entry blocking anchor surface 22, and the diameter of the first end of the nail withdrawal guiding curved surface 21 is smaller than the diameter of the second end of the nail withdrawal guiding curved surface 21.
钉头螺纹段1与钉尾螺纹的的螺纹方向一致，用于达成单一的旋转动作实现钉头螺纹段1与钉尾螺纹段2同进与同退的效果。The thread directions of the nail head thread section 1 and the nail tail thread section 2 are consistent, so that a single rotation action is achieved to realize the effect of simultaneous advancement and retreat of the nail head thread section 1 and the nail tail thread section 2.
工作原理：抗牵张螺钉在旋入过程中，钉头螺纹段1与钉尾螺纹段2都旋入到股骨后，因为引导进钉结构与引导退钉结构分别设置在钉头与钉尾位置，且对应连接有阻挡退钉锚定面12与阻挡进钉锚定面22的设置，通过钉尾端的引导退钉结构向钉头端的阻挡退钉锚定面12施加一个退钉的力量，而钉头端的引导进钉结构向钉尾端的阻挡进钉锚定面22施加一个进钉的力量，这样就会带动带有钉头螺纹段1的骨折近端骨块与带有钉尾螺纹段2的骨折远端骨块有相互靠近的运动趋势，从而使骨折面的接触压力增加；此种设置达到双向给骨折面施压的效果。此种技术方案与现有技术的CN202211589089-股骨颈内固定螺钉设置双螺纹但螺纹的螺距不同的技术方案相比，现有技术钉尾端螺纹的螺距小于钉头端螺距的方式，其在旋入过程中利用的是不同螺距的旋转阻力不同提供的骨面加压效果。Working principle: During the screwing-in process of the anti-tension screw, after the nail head threaded section 1 and the nail tail threaded section 2 are screwed into the femur, because the guiding screw-in structure and the guiding screw-out structure are respectively arranged at the nail head and the nail tail, and the corresponding settings of the screw-out blocking anchor surface 12 and the screw-in blocking anchor surface 22 are connected, a screw-out force is applied to the screw head blocking anchor surface 12 through the guiding screw-out structure at the nail tail end, and a screw-in force is applied to the screw head blocking anchor surface 22 at the nail tail end, which will drive the proximal bone block of the fracture with the nail head threaded section 1 and the distal bone block of the fracture with the nail tail threaded section 2 to move closer to each other, thereby increasing the contact pressure of the fracture surface; this arrangement achieves the effect of applying pressure to the fracture surface in both directions. Compared with the prior art CN202211589089-femoral neck internal fixation screw with double threads but different thread pitches, the prior art has a thread pitch of the tail end of the screw that is smaller than the thread pitch of the head end. During the screwing-in process, the bone surface pressure effect provided by the different rotational resistances of different thread pitches is utilized.
支撑力量发挥作用的退钉过程中，由引导退钉曲面21的带动固定钉滑动退钉，退钉的同时因为阻挡退钉锚定面12的存在，阻挡退钉锚定面12会给予骨折近端骨块一个朝向退钉方向的力量，而这个力量能够实现向骨折断面的施压，增加压力会促进骨折断面的愈合，另外因为引导退钉曲面21的设置，退钉过程需要克服的引导退钉曲面21的回退阻力，有效的减少退钉的幅度，也能够有效的避免由固定钉直接滑动退出造成的股骨颈缩短的问题。During the nail withdrawal process when the supporting force comes into play, the fixed nail is driven by the guiding nail withdrawal curved surface 21 to slide and withdraw the nail. At the same time, due to the existence of the blocking nail withdrawal anchoring surface 12, the blocking nail withdrawal anchoring surface 12 will give the proximal bone block of the fracture a force in the direction of nail withdrawal, and this force can achieve pressure on the fracture section. Increasing the pressure will promote the healing of the fracture section. In addition, due to the setting of the guiding nail withdrawal curved surface 21, the withdrawal process needs to overcome the retreat resistance of the guiding nail withdrawal curved surface 21, which effectively reduces the amplitude of nail withdrawal and can also effectively avoid the problem of femoral neck shortening caused by the direct sliding withdrawal of the fixed nail.
牵张力量发挥作用的进钉趋势过程中，牵张力量给予固定钉一个向内移动的力量，这样阻挡进钉锚定面22接收到力量后就会给予骨折面远端骨块一个向内移动的力量，这个向内移动的力量会促使骨折的骨面维持一个加压的效果，阻挡进钉锚定面22也给固定钉的向内牵张提供了较大的阻力，这个阻力与牵张力量发生抵消，达到了避免固定钉向内牵张移动的效果。During the nail advancement process under the action of the distraction force, the distraction force gives the fixing nail a force to move inwards, so that after receiving the force, the blocking nail anchoring surface 22 will give the bone block distal to the fracture surface a force to move inwards, and this inward movement force will prompt the fractured bone surface to maintain a pressurized effect, and the blocking nail anchoring surface 22 also provides a large resistance to the inward distraction of the fixing nail, and this resistance offsets the distraction force, thereby achieving the effect of preventing the fixing nail from moving inwards.
最终通过上述结构的设置，有效的在支撑力量与牵张力量对固定钉发挥作用时，固定钉都会给骨折的骨面一个加压的促进恢复的力量，能够有效的控制退钉的幅度，避免股骨颈缩短。Finally, through the setting of the above structure, when the supporting force and the pulling force act on the fixing nail, the fixing nail will give the fractured bone surface a force to promote recovery, which can effectively control the extent of nail withdrawal and avoid shortening of the femoral neck.
更优选的实施方式为，除边缘的过渡螺纹结构外，中间的螺纹结构上的引导进钉曲面11与引导退钉曲面21形状相同或相似；阻挡退钉锚定面12与阻挡进钉锚定面22形状相同或相似；阻挡退钉锚定面12朝向钉尾端，阻挡进钉锚定面22朝向钉头端。此种设置保证单圈螺纹结构构成一个随螺纹走向的近圆锥台结构，圆锥台结构的设置保证其上的引导曲面在第一方向形成动力引导，又对相反方向构成阻力锚定。A more preferred embodiment is that, except for the transition thread structure at the edge, the guide screw entry curved surface 11 and the guide screw withdrawal curved surface 21 on the middle thread structure have the same or similar shapes; the screw withdrawal blocking anchor surface 12 and the screw entry blocking anchor surface 22 have the same or similar shapes; the screw withdrawal blocking anchor surface 12 faces the tail end of the screw, and the screw entry blocking anchor surface 22 faces the head end of the screw. This arrangement ensures that the single-turn thread structure forms a nearly truncated cone structure that follows the direction of the thread, and the setting of the truncated cone structure ensures that the guide curved surface thereon forms a power guide in the first direction, and forms a resistance anchor in the opposite direction.
更优选的实施方式为，中间的螺纹结构上的引导进钉曲面11与引导退钉曲面21大小相同；阻挡退钉锚定面12与阻挡进钉锚定面22形状大小相同；阻挡退钉锚定面12朝向钉尾端，阻挡进钉锚定面22朝向钉头端。相同设置保证提供的引导力量与锚定力量一致，保证进钉与退钉过程中的力量一致。A more preferred embodiment is that the guide nail insertion curved surface 11 and the guide nail withdrawal curved surface 21 on the middle thread structure are of the same size; the blocking nail withdrawal anchor surface 12 and the blocking nail insertion anchor surface 22 are of the same shape and size; the blocking nail withdrawal anchor surface 12 faces the nail tail end, and the blocking nail insertion anchor surface 22 faces the nail head end. The same setting ensures that the guiding force provided is consistent with the anchoring force, and ensures that the force during the nail insertion and withdrawal process is consistent.
更优选的实施方式为，钉头螺纹段1与钉尾螺纹段2除朝向不同，螺纹结构的圈数，钉头螺纹段1与钉尾螺纹段2相对的螺纹结构设置相同；此种设置保证钉头螺纹段1与钉尾螺纹段2给予骨面的压力基本一致，避免因给骨面的压力不同而对骨面造成不良影响。A more preferred embodiment is that, except for the different directions and the number of turns of the thread structure, the relative thread structure settings of the nail head thread segment 1 and the nail tail thread segment 2 are the same; this setting ensures that the pressure applied to the bone surface by the nail head thread segment 1 and the nail tail thread segment 2 is basically the same, avoiding adverse effects on the bone surface due to different pressures applied to the bone surface.
更优选的实施方式为：固定钉包括中间段3，其设置在钉头螺纹段1与钉尾螺纹段2之间；中间段3未设螺纹，螺纹段的最大直径与中间段3差值为1-2mm。A more preferred embodiment is that the fixing nail includes a middle section 3, which is arranged between the nail head thread section 1 and the nail tail thread section 2; the middle section 3 is not provided with threads, and the maximum diameter of the thread section differs from that of the middle section 3 by 1-2 mm.
更优选的实施方式为，阻挡退钉锚定面12垂直于螺钉主体纵轴，或者阻挡退钉锚定面12自外侧向内侧朝向钉头螺纹段1的第一端倾斜；阻挡进钉锚定面22垂直于螺钉主体纵轴，或者阻挡进钉锚定面22自外侧向内侧朝向钉尾螺纹段2的第一端倾斜，上述方式保证锚定面能够有效稳定的形成锚定作用，避免发生非旋转的退钉现象。A more preferred implementation is that the anchoring surface 12 preventing nail withdrawal is perpendicular to the longitudinal axis of the screw body, or the anchoring surface 12 preventing nail withdrawal is inclined from the outside to the inside toward the first end of the nail head thread segment 1; the anchoring surface 22 preventing nail advancement is perpendicular to the longitudinal axis of the screw body, or the anchoring surface 22 preventing nail advancement is inclined from the outside to the inside toward the first end of the nail tail thread segment 2. The above method ensures that the anchoring surface can effectively and stably form an anchoring effect, avoiding the occurrence of non-rotational nail withdrawal.
更优选的实施方式为，固定钉为中空固定钉，方便通过克氏针引导固定钉旋入骨折位置。In a more preferred embodiment, the fixing nail is a hollow fixing nail, so that the fixing nail can be conveniently guided into the fracture position by a Kirschner wire.
更优选的实施方式为：固定钉尾端设置尾帽4，尾帽4第一端端部设置操作孔41，尾帽4第二端端部位置开始设置钉尾螺纹段2，此种设置保证钉尾螺纹段有效设置在骨质内不会进入到骨腔，保证钉尾螺纹段能够有效发挥作用。A more preferred embodiment is as follows: a tail cap 4 is provided at the tail end of the fixing nail, an operating hole 41 is provided at the first end of the tail cap 4, and a nail tail thread section 2 is provided starting from the second end of the tail cap 4. This arrangement ensures that the nail tail thread section is effectively provided in the bone and will not enter the bone cavity, thereby ensuring that the nail tail thread section can effectively function.
更优选的实施方式，钉头螺纹段1与钉尾螺纹段2的螺纹圈数范围为5-7圈，根据患者的骨质情况进行具体圈数的选择。In a more preferred embodiment, the number of thread turns of the nail head thread segment 1 and the nail tail thread segment 2 ranges from 5 to 7, and the specific number of turns is selected according to the patient's bone condition.
更优选的实施方式为，钉头螺纹段1与钉尾螺纹段2的长度相同，长度范围为1-4cm。In a more preferred embodiment, the length of the nail head thread section 1 and the nail tail thread section 2 is the same, and the length range is 1-4 cm.
更优选的实施方式，钉头螺纹段1的第一端为钉头方向一端，钉头螺纹段1的第一端设置多个构建自攻尖的倾斜槽一13，优选设置2-3个倾斜槽一13。通过此种方式构建出多个自攻尖，保证固定钉为自攻固定钉。In a more preferred embodiment, the first end of the nail head thread segment 1 is the end in the direction of the nail head, and the first end of the nail head thread segment 1 is provided with a plurality of inclined grooves 13 for constructing self-tapping tips, preferably 2-3 inclined grooves 13. In this way, a plurality of self-tapping tips are constructed to ensure that the fixing nail is a self-tapping fixing nail.
更优选的实施方式为，倾斜槽穿设在钉头螺纹段1的前两圈螺纹结构上。且前两圈螺纹结构的尺寸较其他圈螺纹结构小，此种设置保证形成有效的自攻尖，还能够实现螺纹的有效过渡。更优选的实施方式为：倾斜槽一13由存在夹角的两个面围成，且自钉头端向钉尾端方向倾斜，倾斜槽一13的倾斜方向一致。此种方式更有利于自攻结构的形成，自攻结构为由倾斜槽一13构建的倾斜的自攻尖，倾斜槽一13的倾斜方向与螺纹倾斜走向一致，此种设置保证旋转时，形成的自攻尖对组织有自行进入的引导趋势。A more preferred embodiment is that the inclined groove is provided on the first two circles of the thread structure of the nail head thread segment 1. And the size of the first two circles of the thread structure is smaller than that of the other circles of the thread structure. This arrangement ensures the formation of an effective self-tapping tip and can also achieve an effective transition of the thread. A more preferred embodiment is that the inclined groove 13 is surrounded by two surfaces with an angle, and is inclined from the nail head end to the nail tail end, and the inclined direction of the inclined groove 13 is consistent. This method is more conducive to the formation of a self-tapping structure. The self-tapping structure is an inclined self-tapping tip constructed by the inclined groove 13. The inclined direction of the inclined groove 13 is consistent with the inclined direction of the thread. This arrangement ensures that when rotating, the formed self-tapping tip has a guiding tendency to enter the tissue by itself.
更优选的实施方式为，钉尾螺纹段2的第一端为远离钉尾方向的一端，钉尾螺纹段2的第一端设置构建自攻结构的倾斜槽二23，设置2-3个倾斜槽二23。优选的倾斜槽二23穿设在钉尾螺纹段2的前2-3圈螺纹结构上。此种设置保证当钉尾结构进入骨折面后端骨块时，提供有效的自攻进入骨块的力量，避免出现旋转进入的停滞问题。倾斜槽二23由存在夹角的两个面围成，且自钉头端向钉尾端方向倾斜，多个倾斜槽二23的倾斜方向一致，倾斜槽二23的倾斜方向与螺纹倾斜走向一致。A more preferred embodiment is that the first end of the nail tail thread section 2 is the end away from the nail tail direction, and the first end of the nail tail thread section 2 is provided with an inclined groove 23 for constructing a self-tapping structure, and 2-3 inclined grooves 23 are provided. The preferred inclined groove 23 is penetrated on the first 2-3 circles of the thread structure of the nail tail thread section 2. This arrangement ensures that when the nail tail structure enters the rear end bone block of the fracture surface, it provides effective self-tapping force to enter the bone block, avoiding the problem of stagnation of rotational entry. The inclined groove 23 is surrounded by two surfaces with an angle, and is inclined from the nail head end to the nail tail end. The inclined direction of multiple inclined grooves 23 is consistent, and the inclined direction of the inclined groove 23 is consistent with the inclined direction of the thread.
通过倾斜槽一13与倾斜槽二23的上述设置保证钉头螺纹段1与钉尾螺纹段2都形成自攻效果，保证整个固定钉的旋转自攻进入。The above arrangement of the inclined groove 13 and the inclined groove 2 23 ensures that both the nail head thread section 1 and the nail tail thread section 2 form a self-tapping effect, thereby ensuring the rotational self-tapping entry of the entire fixing nail.
更优选的实施方式为：相邻的两圈螺纹结构间通过弧形结构连接，通过此种方式有效避免尖锐的连接对组织的损伤，另还能够给引导进钉曲面11与引导退钉曲面21一个缓冲引导。A more preferred embodiment is that two adjacent circles of thread structures are connected by an arc structure, which can effectively avoid damage to tissues caused by sharp connections and can also provide a buffer guide for the nail entry guide surface 11 and the nail withdrawal guide surface 21.
实施例2Example 2
参考图7，一种用于股骨颈骨折的固定器械，固定器械包括1根实施例1涉及的动力滑动加压抗牵张螺钉或者2根平行设置的实施例1涉及的动力滑动加压抗牵张螺钉。Referring to FIG. 7 , a fixation device for femoral neck fracture is shown, the fixation device comprising one dynamic sliding compression anti-tension screw according to Example 1 or two dynamic sliding compression anti-tension screws according to Example 1 arranged in parallel.
更优选的实施方式为，螺钉长度与目前市面上的用于股骨颈骨折的固定螺钉长度一致；钉头螺纹段1与钉尾螺纹段2的长度相同，长度范围为2-4cm。In a more preferred embodiment, the screw length is consistent with the length of the fixation screws currently on the market for femoral neck fractures; the length of the screw head thread section 1 and the screw tail thread section 2 are the same, and the length range is 2-4 cm.
更优选的实施方式为，平行设置2根动力滑动加压抗牵张螺钉。A more preferred embodiment is to arrange two dynamic sliding compression anti-tension screws in parallel.
实施例3Example 3
一种包含实施例1中抗牵张螺钉的固定板，固定板上设置钉孔，牵张螺钉通过钉孔进入股骨内与固定板结合完成股骨复位固定。A fixing plate comprising the anti-tension screw in Example 1, wherein a nail hole is arranged on the fixing plate, and the tension screw enters into the femur through the nail hole and combines with the fixing plate to complete the reduction and fixation of the femur.
或者，一种包含实施例1中抗牵张螺钉的固定板，固定板上设置套筒，牵张螺钉通过套筒进入股骨内与固定板结合完成股骨复位固定；套筒第一端为钉尾段方向的一端；牵张螺钉自套筒第二端伸出，且钉尾螺纹段也自套筒第二端端部伸出。Alternatively, a fixing plate comprising the anti-tension screw of Example 1, a sleeve is arranged on the fixing plate, the tension screw enters the femur through the sleeve and combines with the fixing plate to complete the reduction and fixation of the femur; the first end of the sleeve is one end in the direction of the nail tail section; the tension screw extends from the second end of the sleeve, and the nail tail thread section also extends from the second end of the sleeve.
以上通过特定的具体实施例对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例，本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其他优点与功效。本发明还通过另外不同的具体实施方式加以实施或应用，在不冲突的情况下，以上实施例及实施例中的特征相互组合，基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described above through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention is also implemented or applied through other different specific implementation methods. In the absence of conflict, the above embodiments and features in the embodiments are combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410694876.4ACN118252585A (en) | 2024-05-31 | 2024-05-31 | Power sliding pressurization anti-tensioning screw |
| CN202422139028.5UCN223158419U (en) | 2024-05-31 | 2024-09-02 | Dynamic sliding compression anti-tension screw, femoral neck fracture fixation device and fixation plate |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410694876.4ACN118252585A (en) | 2024-05-31 | 2024-05-31 | Power sliding pressurization anti-tensioning screw |
| Publication Number | Publication Date |
|---|---|
| CN118252585Atrue CN118252585A (en) | 2024-06-28 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410694876.4AWithdrawnCN118252585A (en) | 2024-05-31 | 2024-05-31 | Power sliding pressurization anti-tensioning screw |
| CN202422139028.5UActiveCN223158419U (en) | 2024-05-31 | 2024-09-02 | Dynamic sliding compression anti-tension screw, femoral neck fracture fixation device and fixation plate |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422139028.5UActiveCN223158419U (en) | 2024-05-31 | 2024-09-02 | Dynamic sliding compression anti-tension screw, femoral neck fracture fixation device and fixation plate |
| Country | Link |
|---|---|
| CN (2) | CN118252585A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175555A (en)* | 1977-02-24 | 1979-11-27 | Interfix Limited | Bone screw |
| US5019079A (en)* | 1989-11-20 | 1991-05-28 | Zimmer, Inc. | Bone screw |
| JPH08126650A (en)* | 1994-11-01 | 1996-05-21 | For S Medical:Kk | Internal fixation member for rotational femoral head osteotomy and treatment of femoral neck fractures |
| US6319254B1 (en)* | 1999-04-22 | 2001-11-20 | Newdeal | Compression osteosynthesis screw, and an ancillaty device for use therewith |
| US20040068261A1 (en)* | 2002-07-05 | 2004-04-08 | Fourcault Eric Stephane | Self-boring and self-tapping screw for osteosynthesis and compression |
| WO2013175099A1 (en)* | 2012-05-21 | 2013-11-28 | Neosteo | Self-compressing osteosynthesis screw |
| CN105877832A (en)* | 2014-12-27 | 2016-08-24 | 王建平 | Femoral neck fixing mechanism and femoral neck fracture fixing structure thereof |
| US20170348033A1 (en)* | 2016-06-02 | 2017-12-07 | In2Bones Usa, Llc | Differential compression bone screw |
| WO2020167275A2 (en)* | 2019-02-12 | 2020-08-20 | T.C. Maltepe Üni̇versi̇tesi̇ | A rotation anti-rotation compression screw |
| CN113425400A (en)* | 2021-04-08 | 2021-09-24 | 首都医科大学附属北京潞河医院 | Fixed femoral neck fracture's anti-V word configuration hollow screw subassembly |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175555A (en)* | 1977-02-24 | 1979-11-27 | Interfix Limited | Bone screw |
| US5019079A (en)* | 1989-11-20 | 1991-05-28 | Zimmer, Inc. | Bone screw |
| JPH08126650A (en)* | 1994-11-01 | 1996-05-21 | For S Medical:Kk | Internal fixation member for rotational femoral head osteotomy and treatment of femoral neck fractures |
| US6319254B1 (en)* | 1999-04-22 | 2001-11-20 | Newdeal | Compression osteosynthesis screw, and an ancillaty device for use therewith |
| US20040068261A1 (en)* | 2002-07-05 | 2004-04-08 | Fourcault Eric Stephane | Self-boring and self-tapping screw for osteosynthesis and compression |
| WO2013175099A1 (en)* | 2012-05-21 | 2013-11-28 | Neosteo | Self-compressing osteosynthesis screw |
| CN105877832A (en)* | 2014-12-27 | 2016-08-24 | 王建平 | Femoral neck fixing mechanism and femoral neck fracture fixing structure thereof |
| US20170348033A1 (en)* | 2016-06-02 | 2017-12-07 | In2Bones Usa, Llc | Differential compression bone screw |
| WO2020167275A2 (en)* | 2019-02-12 | 2020-08-20 | T.C. Maltepe Üni̇versi̇tesi̇ | A rotation anti-rotation compression screw |
| CN113425400A (en)* | 2021-04-08 | 2021-09-24 | 首都医科大学附属北京潞河医院 | Fixed femoral neck fracture's anti-V word configuration hollow screw subassembly |
| Publication number | Publication date |
|---|---|
| CN223158419U (en) | 2025-07-29 |
| Publication | Publication Date | Title |
|---|---|---|
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication | Application publication date:20240628 |