WO2017080482A1 - 一种接骨板 - Google Patents

一种接骨板 Download PDF

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Publication number
WO2017080482A1
WO2017080482A1 PCT/CN2016/105306 CN2016105306W WO2017080482A1 WO 2017080482 A1 WO2017080482 A1 WO 2017080482A1 CN 2016105306 W CN2016105306 W CN 2016105306W WO 2017080482 A1 WO2017080482 A1 WO 2017080482A1
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WO
WIPO (PCT)
Prior art keywords
sliding groove
plate body
plate
width
locking screw
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PCT/CN2016/105306
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English (en)
French (fr)
Inventor
张英泽
郑占乐
常恒瑞
Original Assignee
张英泽
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201510759194.8A external-priority patent/CN105213015B/zh
Priority claimed from CN201520890025.3U external-priority patent/CN205107867U/zh
Application filed by 张英泽 filed Critical 张英泽
Publication of WO2017080482A1 publication Critical patent/WO2017080482A1/zh

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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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor

Definitions

  • the invention relates to a bone plate used for fracture of a long bone of a limb, and belongs to the technical field of orthopedic surgical instruments.
  • Limb fractures are the most common type of fracture in orthopedic clinical work. Exploring the most ideal fixation method for limb fractures has always been a hot and difficult point in orthopedic work. The current situation of several bone plates is as follows:
  • the traditional bone plate for fixing fractures of the extremities mainly relies on the friction between the bone plate and the bone surface to maintain stability.
  • the periosteum needs to be peeled off in a large area, which seriously destroys the blood supply around the fracture, and the fracture end cannot be pressurized during the operation. It is prone to fracture nonunion after operation and has been basically eliminated.
  • DCP dynamic compression plate
  • the unique "angular stability” and “internal fixation” of the locking plate can provide a stable fixation effect while protecting the periosteum from damage.
  • due to the inability to pressurize the fracture end during surgery, postoperative It also affects fracture healing, and is mainly used for the treatment of dry fractures or comminuted fractures of the extremities.
  • the technical problem to be solved by the invention is to provide a bone plate which has an active pressing effect on the fracture end, and the bone plate has an active pressing effect on the fracture end after the operation, so that the healing rate of the bone around the fracture is greater than the bone absorption. Speed, reduce the incidence of postoperative fracture nonunion and accelerate the healing of fractures.
  • the invention discloses a bone plate comprising a plate body and a locking screw.
  • the plate body has opposite first and second surfaces.
  • the two ends of the plate body are respectively provided with at least one sliding groove extending through the first surface and the second surface along the longitudinal direction of the plate body, and the inner side of the sliding groove is stepped.
  • To form a notch exposed from the first surface such that the sliding groove has a first width on the first surface and the sliding groove has a second width on the second surface, the first width being greater than the second width.
  • the locking screw includes a nut and a screw.
  • the screw penetrates into the sliding groove from the first surface, the nut is located in the notch, and is supported by the sliding groove, and the locking screw can slide along the sliding groove.
  • the plate surface of the bone plate is rectangular, and the two ends of the rectangular plate surface have an inward long sliding groove, the sliding groove is along the length direction of the plate surface, and the sliding groove is located on the center line of the longitudinal direction of the plate surface.
  • the upper end of the sliding groove has a notch at the upper end, and the sliding groove has an inverted convex shape.
  • the width of the sliding groove matches the diameter of the screw of the locking screw, and the width of the notch matches the diameter of the nut of the locking screw.
  • the upper surface has a circular arc shape in the longitudinal direction, and the heights at both ends in the longitudinal direction of the plate surface are lower than the height in the middle of the plate surface, and the cross section of the plate surface is an arc shape, and the heights on both sides in the width direction of the plate surface are lower than the height in the middle of the plate surface. .
  • the locking screw in the sliding groove is a hexagon socket screw, and the nut of the locking screw is embedded in the notch of the upper part of the sliding groove, and the nut height of the locking screw is smaller than the upper part of the sliding groove The depth of the step gap.
  • the plate surface at the rear end of the sliding groove and the plate body has a screw hole inclined toward the center of the plate surface, and the inclination angle of the screw hole and the plate surface is 30- At 45 degrees, the screw holes match the threads at the front end of the handle that places and removes the bone plate.
  • the bone plate of the invention adopts a sliding groove to replace the locking screw hole structure of the existing bone plate, which is more favorable for achieving minimally invasive, and at the same time, under the action of gravity and muscle pulling, the sliding groove is designed so that the screw has no obvious resistance in the longitudinal direction. Avoiding the destruction of the biological environment around the fracture can fully pressurize the fracture end, which is consistent with the principle of fracture healing and is more conducive to fracture healing.
  • the bone plate of the present invention is applied, and the locking screw can be slightly moved along the sliding groove of the bone plate, and the weight of the human body can make the ends of the fracture close to each other, thereby realizing the effect of active pressing. Promotes healing of the fracture site.
  • the invention has the advantages of simple structure and convenient use, and solves the problem that the bone plate is actively pressurized after the bone plate is fixed, and has a good effect of promoting fracture healing, and is worthy of popularization and application.
  • FIG. 1 is a schematic structural view of a bone plate according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Fig. 3 is a side view showing the structure in which the locking screw is attached to the sliding groove.
  • FIG. 4 is a schematic structural view of a plate body of a bone plate according to still another embodiment of the present invention.
  • Fig. 5 is a structural schematic view of a plate body of a bone plate according to still another embodiment of the present invention.
  • the invention discloses a bone plate comprising a plate body 1 and a locking screw 4.
  • the plate body 1 has opposite first and second surfaces, and along the longitudinal direction of the plate body 1, the two ends of the plate body 1 are respectively provided with at least one sliding groove 2 penetrating the first surface and the second surface, the sliding groove 2
  • the inner side is stepped to form a notch 3 exposed from the first surface such that the sliding groove 2 has a first width W1 on the first surface, and the sliding groove 2 has a second width W2 on the second surface, the first width W1 being greater than the second Width W2.
  • the locking screw 4 includes a nut 41 and a screw 42 that penetrates from the first surface into the sliding groove 2, the nut 41 is located in the notch 3, and is supported by the sliding groove 2, and the locking screw 4 is slidable along the sliding groove 2.
  • the lower surface of the nut 41 of the locking screw 4 is finitely tightly fastened to the plane of the notch 3, and the lower surface of the nut 41 of the locking screw 4 can slightly slip along the plane of the notch 3, and In the longitudinal direction of the plate body 1, the locking screw 4 and the connected bone can be slightly moved, and the active pressure is applied under the action of the human body to promote the healing of the fracture site.
  • the degree of compression of the locking screw 4 and the plate body 1 is mastered by an experienced doctor, so that the plate body 1 can neither press the cortical bone nor move, and maintain a certain pressure, so that the plate body 1 functions as a fixed fracture site. At the same time, there is a slight movement in the longitudinal direction of the plate body 1.
  • the bone plate of the invention adopts a sliding groove to replace the locking screw hole structure of the existing bone plate, which is more favorable for achieving minimally invasive, so that the screw offset problem does not occur when the screw is implanted percutaneously, so that the screw is more easily inserted into the sliding groove.
  • the sliding groove design makes the screw have no obvious resistance in the longitudinal direction, avoiding destroying the biological environment around the fracture, and can fully pressurize the fracture end, conform to the principle of fracture healing, and is more conducive to fracture healing. .
  • the bone plate of the present invention is applied, and the locking screw can be slightly moved along the sliding groove of the bone plate, and the weight of the human body can make the ends of the fracture close to each other, thereby realizing the effect of active pressing. Promotes healing of the fracture site.
  • the invention has the advantages of simple structure and convenient use, and solves the problem that the bone plate is actively pressurized after the bone plate is fixed, and has a good effect of promoting fracture healing, and is worthy of popularization and application.
  • the upper end of the sliding groove 2 has a notch 3 at its upper end, the diameter of the nut 41 matches the first width W1, and the diameter of the screw 42 matches the second width W2, that is, the notch 3
  • the width matches the diameter of the nut 41 of the locking screw 4. Therefore, during the sliding of the locking screw 4, the sliding groove 2 acts as a lateral limit on the locking screw 4.
  • the locking screw 4 is connected to the cortical bone through the sliding groove 2.
  • the sliding groove 2 replaces the screw hole, which is more advantageous for achieving minimally invasiveness, so that the screw offset problem does not occur when the screw is implanted percutaneously, and the locking screw 4 is more easily placed into the sliding groove 2.
  • the locking screw 4 is a hexagon socket screw, and the nut 41 of the locking screw 4 is embedded in the notch of the upper portion of the sliding groove 2.
  • the height of the nut 41 of the locking screw 4 is smaller than the depth of the notch 3 in the upper portion of the sliding groove 2.
  • Lock The thickness of the nut 41 of the screw 4 may be 1/3 of the groove depth of the sliding groove 2.
  • the plate body 1 has a rectangular shape, and the first surface of the plate body 1 has an arc shape in the longitudinal direction, and the height of the two ends of the plate body 1 is lower than the plate along the longitudinal direction of the plate body.
  • the height of the middle of the face, the cross section of the plate body 1 is a circular arc shape, and the height of the both sides of the plate body 1 is lower than the height of the middle of the plate body 1 along the lateral direction of the plate body 1. Therefore, the stress applied to the plate body 1 can be effectively dispersed, and the stress concentration fracture of the plate body 1 can be prevented.
  • the outer shape of the plate body 1 makes it easier to insert the plate body 1 into the periosteal tunnel.
  • one end of the plate body 1 is provided with one sliding groove 2, and the sliding groove 2 is disposed along the longitudinal direction of the plate body 1.
  • the sliding grooves 2 at both ends are located on the center line in the longitudinal direction of the plate body 1.
  • FIG. 4 is a schematic structural view of a plate body 1 of a bone plate according to still another embodiment of the present invention.
  • Two sliding grooves 2 are respectively disposed at two ends of the plate body 1.
  • FIG. 5 is a schematic structural view of a plate body 1 of a bone plate according to still another embodiment of the present invention.
  • the plate body 1 is provided with one sliding groove 2 at one end and two sliding grooves 2 at the other end.
  • the longitudinal center line of the sliding groove 2 at the end is collinear with the center line of the two sliding grooves 2 at the other end.
  • the first surface of the plate body 1 is symmetrically provided with a pair of connecting holes 5 which are respectively disposed near the inner end portions of the sliding grooves.
  • a connecting hole 5 is formed on the plate surface at the rear end of the sliding groove 2 and the plate body 1.
  • the connecting hole 5 communicates with the corresponding sliding groove 2, and the connecting hole 5 is in the center of the plate body 1 in the plate body 1. Tilted and does not penetrate the board 1.
  • the inclination angle of the connecting hole 5 is 30-45 degrees
  • the connecting hole 5 may be a threaded hole.
  • the attachment hole 5 matches the thread of the front end of the handle on which the bone plate is placed and removed. In a minimally invasive procedure, the threaded portion of the front end of the handle is screwed into the attachment hole 5, and the handle is placed or removed by the hand grip.
  • the angle of inclination of the connecting hole 5 and the bottom surface of the plate body 1 is 30 degrees, and the diameter of the connecting hole 5 is 5 mm and the depth is 3 mm.
  • the plate has an arc-shaped design, and the bone plate around the fracture end is thickened and gradually thinned toward both ends, thereby effectively dispersing the stress on the plate and preventing the stress on the plate from being effectively prevented.
  • the stress plate is concentrated and fractured.
  • the invention adopts a sliding groove instead of a screw hole, which is more favorable for achieving minimally invasive, so that the screw offset problem does not occur when the screw is implanted percutaneously, so that the screw is more easily placed into the sliding groove; at the same time, the action of gravity and muscle pulling
  • the sliding groove design makes the screw have no obvious resistance in the longitudinal direction, avoiding damage to the biological environment around the fracture, and can fully pressurize the fracture end, which is consistent with the fracture.
  • the principle is more conducive to fracture healing.
  • the shape of the slightly flattened bone plate of the present invention makes it easier to insert the bone plate into the periosteal tunnel.
  • the locking screw can be slightly moved along the sliding groove of the bone plate, and the weight of the human body can make the ends of the fracture close to each other, realizing the effect of active pressing and promoting the healing of the fracture site.
  • the invention has the advantages of simple structure and convenient use, and solves the problem that the bone plate is actively pressurized after the bone plate is fixed, and has a good effect of promoting fracture healing, and is worthy of popularization and application.

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Abstract

一种接骨板，包括板体（1）和锁定螺钉（4）。板体（1）具有相对的第一表面和第二表面，沿着板体（1）的纵向，板体（1）的两端分别设有至少一个贯穿第一表面和第二表面的滑动槽（2），滑动槽（2）的内侧为台阶状，以形成从第一表面露出的缺口（3），使得滑动槽（2）在第一表面具有第一宽度（W1），滑动槽（2）在第二表面具有第二宽度（W2），第一宽度（W1）大于第二宽度（W2）。锁定螺钉（4）包括螺帽（41）和螺杆（42），螺杆（42）自第一表面穿入滑动槽（2），螺帽（41）位于缺口（3）内，并被滑动槽（2）支撑，锁定螺钉（4）能够沿着滑动槽（2）滑动。接骨板采用滑动槽（2）代替螺钉孔，更有利于实现微创，在术后的康复过程中，实现了主动加压的效果，促进了骨折部位的愈合。接骨板结构简单、使用方便，有良好的促进骨折愈合的作用。

Description

一种接骨板 技术领域
本发明涉及一种四肢长骨骨折使用的接骨板，属于骨科手术器械技术领域。
背景技术
四肢骨折是骨科临床工作中最常见的骨折类型。探索四肢骨折最理想的固定方式一直是骨科工作中的热点与难点。目前使用的几种接骨板的情况如下：
传统用于固定四肢骨折的接骨板主要依靠接骨板与骨面之间的摩擦力维持稳定，术中需大面积剥离骨膜，严重破坏骨折周围血运，因术中不能对骨折端进行加压，术后容易出现骨折不愈合，现已基本淘汰。
随着“AO”系列骨科内固定器械的普及与推广，其使用局限性也日渐显现。
动力加压接骨板(DCP)虽然能够实现术中骨折断端被动加压效果，但依旧依靠于与骨面产生的摩擦力维持稳定，严重破坏骨折周围生物环境。骨折愈合时，一旦骨折周围骨质吸收速度大于成骨愈合速度，被动加压效果即可丧失，不利于骨折愈合。
锁定接骨板独特的“角稳定性”与“内固定支架”作用可在保护骨膜不被破坏的情况下提供稳定的固定效果，但由于术中不能实现对骨折断端的加压作用，术后亦影响骨折愈合，主要应用于四肢干骺端段骨折或粉碎骨折。
交锁髓内钉与锁定加压接骨板(LCP)虽已大量用于临床，且治疗效果显著，但术后仍然不具备对骨折断端主动加压作用，依旧有可能出现因骨折端骨质吸收而导致的骨折不愈合。
综上所述，如何实现术后对骨折端的主动加压效果是降低术后骨折不愈合发生率的关键问题，而目前使用的几种接骨板都不能有效地对骨折部位进行主动加压，因此有必要研制一种新的接骨板解决上述问题。
发明内容
本发明所要解决的技术问题是提供一种对骨折端有主动加压效果的接骨板，这种接骨板在术后对骨折端有主动加压效果，使骨折周围成骨愈合速度大于骨质吸收速度，降低术后骨折不愈合发生率，加快骨折的愈合。
解决上述技术问题的技术方案是：
本发明公开了一种接骨板，包括板体和锁定螺钉。板体具有相对的第一表面和第二表面，沿着板体的纵向，板体的两端分别设有至少一个贯穿第一表面和第二表面的滑动槽，滑动槽的内侧为台阶状，以形成从第一表面露出的缺口，使得滑动槽在第一表面具有第一宽度，滑动槽在第二表面具有第二宽度，第一宽度大于第二宽度。
锁定螺钉包括螺帽和螺杆，螺杆自第一表面穿入滑动槽，螺帽位于缺口内，并被滑动槽支撑，锁定螺钉能够沿着滑动槽滑动。
本发明一实施例中，接骨板板面为长方形，长方形板面的两端有向内的长条滑动槽，滑动槽沿着板面的长度方向，滑动槽位于板面长度方向的中心线上，滑动槽两侧边的上端有缺口，滑动槽截面为倒凸字形，滑动槽的宽度与锁定螺钉的螺杆的直径相匹配，缺口的宽度与锁定螺钉的螺帽的直径相匹配，板面的上表面在长度方向为圆弧形状，板面长度方向两端的高度低于板面中间的高度，板面的横截面为圆弧形状，板面宽度方向两侧的高度低于板面中间的高度。
上述对骨折端有主动加压效果的接骨板，所述滑动槽内的锁定螺钉为内六角螺钉，锁定螺钉的螺帽嵌在滑动槽上部的缺口中，锁定螺钉的螺帽高度小于滑动槽上部台阶缺口的深度。
上述对骨折端有主动加压效果的接骨板，所述滑动槽后端与板身连接处的板面上有向板面中心方向倾斜的螺孔，螺孔与板面的倾斜角度为30-45度，螺孔与放置和取出接骨板的把手前端的螺纹相匹配。
本发明的有益效果是：
本发明的接骨板板采用滑动槽代替现有接骨板的锁定螺孔结构，更有利于实现微创，同时，在重力和肌肉牵拉的作用下，滑动槽设计使螺钉在纵向没有明显阻力，避免破坏骨折周围生物环境，可以使骨折断端充分加压，符合骨折愈合原理，更有利于骨折愈合。在术后的康复过程中，应用本发明的接骨板板，锁定螺钉可以沿着接骨板的滑动槽进行微动滑移，人体重量可以使骨折两端相互接近，实现了主动加压的效果，促进了骨折部位的愈合。本发明结构简单、使用方便，解决了接骨板固定后对骨折部位主动加压的问题，有良好的促进骨折愈合的作用，值得推广应用。
附图说明
图1是本发明一实施例的接骨板的结构示意图；
图2是沿图1中A-A线的剖视图；
图3是示出锁定螺钉安装于滑动槽的结构侧视图。
图4是本发明又一实施例的接骨板的板体的结构示意图；
图5是本发明再一实施例的接骨板的板体的结构示意图。
具体实施方式
本发明公开了一种接骨板，包括板体1和锁定螺钉4。板体1具有相对的第一表面和第二表面，沿着板体1的纵向，板体1的两端分别设有至少一个贯穿第一表面和第二表面的滑动槽2，滑动槽2的内侧为台阶状，以形成从第一表面露出的缺口3，使得滑动槽2在第一表面具有第一宽度W1，滑动槽2在第二表面具有第二宽度W2，第一宽度W1大于第二宽度W2。
锁定螺钉4包括螺帽41和螺杆42，螺杆42自第一表面穿入滑动槽2，螺帽41位于缺口3内，并被滑动槽2支撑，锁定螺钉4能够沿着滑动槽2滑动。
在实际使用时，锁定螺钉4的螺帽41的下表面与缺口3的平面为有限压紧紧固连接，锁定螺钉4的螺帽41的下表面可以沿着缺口3的平面微微滑移，而在板体1的长度方向上锁定螺钉4和连接的骨可以微微移动，在人体重量作用下实现主动加压，促进骨折部位的愈合。
锁定螺钉4与板体1的压紧程度由有经验的医生掌握，使板体1既不能压紧骨皮质不能移动，又要保持一定的压力，使板体1起到固定骨折部位的作用，同时还能在板体1的长度方向有微小的移动。
本发明的接骨板板采用滑动槽代替现有接骨板的锁定螺孔结构，更有利于实现微创，使经皮植入螺钉时不会出现螺钉偏置问题，使螺钉更加容易置入滑动槽；同时，在重力和肌肉牵拉的作用下，滑动槽设计使螺钉在纵向没有明显阻力，避免破坏骨折周围生物环境，可以使骨折断端充分加压，符合骨折愈合原理，更有利于骨折愈合。在术后的康复过程中，应用本发明的接骨板板，锁定螺钉可以沿着接骨板的滑动槽进行微动滑移，人体重量可以使骨折两端相互接近，实现了主动加压的效果，促进了骨折部位的愈合。本发明结构简单、使用方便，解决了接骨板固定后对骨折部位主动加压的问题，有良好的促进骨折愈合的作用，值得推广应用。
本实施例中，如图3所示，滑动槽2两侧边的上端有缺口3，螺帽41的直径与第一宽度W1匹配，螺杆42的直径与第二宽度W2匹配，即，缺口3的宽度与锁定螺钉4的螺帽41的直径相匹配。因此，锁定螺钉4的滑动过程中，滑动槽2对锁定螺钉4起到横向限位的作用。锁定螺钉4穿过滑动槽2与骨皮质相连接。滑动槽2代替螺钉孔，更有利于实现微创，使经皮植入螺钉时不会出现螺钉偏置问题，使锁定螺钉4更加容易置入滑动槽2。本实施例中，锁定螺钉4为内六角螺钉，锁定螺钉4的螺帽41嵌在滑动槽2上部的缺口中，锁定螺钉4的螺帽41高度小于滑动槽2上部的缺口3的深度。锁定 螺钉4的螺帽41厚度可为滑动槽2槽深的1/3。
本实施例中，如图1、2所示，板体1为长方形，板体1的第一表面在长度方向为圆弧形状，沿着板体的纵向，板体1两端的高度低于板面中间的高度，板体1的横截面为圆弧形状，沿着板体1的横向，板体1两侧的高度低于板体1中间的高度。从而，可以有效的分散板体1所受的应力，防止板体1应力集中性断裂。同时，板体1外形设计可使板体1插入骨膜外隧道更加容易。
本实施例中，如图1所示，在板体1的两端有向内的滑动槽2，且两端的滑动槽2对称设置。
本实施例中，板体1的两端各设有一个所述滑动槽2，滑动槽2沿着板体1的长度方向设置，两端的滑动槽2位于板体1长度方向的中心线上。
如图4所示的本发明又一实施例的接骨板的板体1的结构示意图，板体1的两端各设有两个所述滑动槽2。
如图5所示的本发明再一实施例的接骨板的板体1的结构示意图，板体1的一端设有一个所述滑动槽2，另一端设有两个所述滑动槽2，位于该端的滑动槽2的纵向中心线与该另一端的两个所述滑动槽2的中心线共线。
应当理解，滑动槽的数量、位置、形状、分布并不限于本发明上述实施例，可根据需要进行任意改变，任意能够与锁定螺钉配合，实现锁定螺钉滑动的结构均涵盖于本发明的保护范围内。
本实施例中，如图1、2所示，板体1的第一表面对称的设有一对连接孔5，其分别靠近滑动槽的内端部设置。
本实施例中，滑动槽2后端与板体1连接处的板面上有连接孔5，连接孔5与所对应的滑动槽2连通，连接孔5在板体1内朝板体1中心倾斜设置，且并未贯穿板体1。
其中，连接孔5的倾斜角度为30-45度，连接孔5可为螺纹孔。连接孔5与放置和取出接骨板的把手前端的螺纹相匹配。在微创手术中，将把手的前端的螺纹部分旋入连接孔5中，手持把手将接骨板置入或取出。本发明的一个实施例中，连接孔5与板体1的底面的倾斜角度为30度，连接孔5的直径为5mm，深度为3mm。
综上所述，根据本发明一实施例的接骨板，板面采用弧线形设计，骨折端周围接骨板增厚，向两端逐渐变薄，可以有效的分散接骨板所受的应力，防止接骨板应力集中性断裂。本发明采用滑动槽代替螺钉孔，更有利于实现微创，使经皮植入螺钉时不会出现螺钉偏置问题，使螺钉更加容易置入滑动槽；同时，在重力和肌肉牵拉的作用下，滑动槽设计使螺钉在纵向没有明显阻力，避免破坏骨折周围生物环境，可以使骨折断端充分加压，符合骨折愈 合原理，更有利于骨折愈合。本发明的两端略扁的接骨板外形设计可使接骨板插入骨膜外隧道更加容易。本发明在术后的康复过程中，锁定螺钉可以沿着接骨板的滑动槽进行微动滑移，人体重量可以使骨折两端相互接近，实现了主动加压的效果，促进了骨折部位的愈合。本发明结构简单、使用方便，解决了接骨板固定后对骨折部位主动加压的问题，有良好的促进骨折愈合的作用，值得推广应用。

Claims (11)

  1. 一种接骨板，包括：
    板体，其具有相对的第一表面和第二表面，沿着板体的纵向，板体的两端分别设有至少一个贯穿第一表面和第二表面的滑动槽，滑动槽的内侧为台阶状，以形成从第一表面露出的缺口，使得滑动槽在第一表面具有第一宽度，滑动槽在第二表面具有第二宽度，第一宽度大于第二宽度；及
    锁定螺钉，其包括螺帽和螺杆，螺杆自第一表面穿入滑动槽，螺帽位于缺口内，并被滑动槽支撑，锁定螺钉能够沿着滑动槽滑动。
  2. 根据权利要求1所述的接骨板，其中：螺帽的直径与第一宽度匹配，螺杆的直径与第二宽度匹配。
  3. 根据权利要求1所述的接骨板，其中：板体的第一表面在长度方向为圆弧形状，沿着板体的纵向，板体两端的高度低于板面中间的高度，板体的横截面为圆弧形状，沿着板体的横向，板体两侧的高度低于板体中间的高度。
  4. 根据权利要求1所述的接骨板，其中：板体的两端的滑动槽对称设置。
  5. 根据权利要求4所述的接骨板，其中：板体的两端各设有一个所述滑动槽，两端的滑动槽位于板体长度方向的中心线上。
  6. 根据权利要求4所述的接骨板，其中：板体的两端各设有两个所述滑动槽。
  7. 根据权利要求1所述的接骨板，其中：板体的一端设有一个所述滑动槽，另一端设有两个所述滑动槽，位于该端的滑动槽的纵向中心线与该另一端的两个所述滑动槽的中心线共线。
  8. 根据权利要求1所述的接骨板，其中：锁定螺钉为内六角螺钉，锁定螺钉的螺帽嵌在滑动槽上部的缺口中，锁定螺钉的螺帽高度小于滑动槽上部的缺口的深度。
  9. 根据权利要求1所述的接骨板，其中：板体的第一表面对称的设有一对连接孔，其分别靠近滑动槽的内端部设置。
  10. 根据权利要求9所述的接骨板，其中：连接孔与所对应的滑动槽连通，连接孔在板体内朝板体中心倾斜设置，且并未贯穿板体。
  11. 根据权利要求10所述的接骨板，其中：连接孔的倾斜角度为30-45度，连接孔为螺纹孔。
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