技术领域technical field
本发明属于医疗器材技术领域，尤其涉及一种嵌卡式生物型膝关节胫骨平台。The invention belongs to the technical field of medical equipment, and in particular relates to an embedded card-type biological knee joint tibial platform.
背景技术Background technique
膝关节置换手术可以有效解决病患的膝关节病症，减轻病人的痛苦，一定程度上恢复病人的膝关节功能。膝关节假体结构包括：股骨髁、胫骨平台、胫骨平台垫、髌骨和附件。随着医疗器械技术的飞速发展和人们对膝关节假体安全、有效要求的不断提高，膝关节假体技术更加成熟完善，不同种类膝关节假体陆续出现。Knee replacement surgery can effectively solve the patient's knee joint disease, relieve the patient's pain, and restore the patient's knee joint function to a certain extent. Knee prosthesis structures include: femoral condyle, tibial plateau, tibial plateau pad, patella and appendages. With the rapid development of medical device technology and the continuous improvement of people's requirements for the safety and effectiveness of knee joint prostheses, the knee joint prosthesis technology has become more mature and perfect, and different types of knee joint prostheses have appeared one after another.
目前，根据不同的固定方式，膝关节假体可分为骨水泥固定型和生物固定型(非骨水泥型)两大类。其中，骨水泥固定型膝关节假体被称为全膝关节置换术(TKA)的“金标准”，广泛应用于临床。骨水泥单体聚合膨胀渗透至骨小梁中，可加固松质骨，进而扩大应力传导范围，从而提高对医师技术偏差和骨质的容忍度。然而，骨水泥对于人体而言是一种惰性材料,其与骨组织或关节假体只能形成机械性结合,这必然面临老化、碎裂及磨损颗粒等问题。临床实践发现骨水泥型膝关节假体会出现一系列并发症，如骨水泥植入综合症(BCIS)、骨水泥聚合放热造成假体周围组织损伤、术后局部感染、患处感觉或功能障碍和假体早期松动等，影响手术成功率及假体长期稳定性。At present, according to different fixation methods, knee prosthesis can be divided into two categories: cement-fixed and bio-fixed (non-cemented). Among them, cement-fixed knee prosthesis is known as the "gold standard" of total knee arthroplasty (TKA) and is widely used in clinical practice. The polymerized expansion of the bone cement monomer penetrates into the trabecular bone, which can strengthen the cancellous bone, thereby expanding the range of stress transmission, thereby improving the tolerance of the physician's technical deviation and bone quality. However, bone cement is an inert material for the human body, and it can only form a mechanical bond with bone tissue or joint prostheses, which inevitably faces problems such as aging, fragmentation and wear particles. Clinical practice has found that cemented knee prosthesis will cause a series of complications, such as Bone Cement Implant Syndrome (BCIS), tissue damage around the prosthesis caused by the heat release of bone cement polymerization, postoperative local infection, and sensory or dysfunction of the affected area. and early loosening of the prosthesis, etc., affecting the success rate of surgery and the long-term stability of the prosthesis.
生物型膝关节假体是通过骨与假体的直接骨长入而达到生物学固定的目的，其克服了骨水泥型假体机械性结合的缺点，促进假体与骨组织整合，提高假体的长期稳定性，且更便于后期翻修，具有广泛的应用前景。对于生物膝型关节假体而言，能否获得牢固的初始稳定性，是影响其后期骨长入和长期稳定性的重要因素。目前，生物型膝关节假体主要采用过盈压配的固定方式，将人工胫骨平台固定在胫骨上，获得一定的初始稳定性。然而，现有生物型膝关节假体在行走载荷下容易产生松动，常出现胫骨平台下沉或翘起等并发症，导致胫骨平台初始稳定性不足，其原因多在于胫骨平台未能实现有效的坚强固定或由偏心负荷产生的横向剪切力导致假体-骨界面之间产生微动或位移。因此，通过完善生物膝关节胫骨平台的固定设计，强化关节假体与胫骨组织的牢固结合，对于增强生物膝关节假体的初始稳定性，以及促进后期骨长入和提高假体长期稳定性，都具有重要的意义。The biological knee joint prosthesis achieves the purpose of biological fixation through the direct bone ingrowth of the bone and the prosthesis, which overcomes the shortcomings of the mechanical combination of the cement-based prosthesis, promotes the integration of the prosthesis and the bone tissue, and improves the prosthesis. The long-term stability is more convenient for later renovation, and it has a wide range of application prospects. For biological knee joint prostheses, whether a firm initial stability can be obtained is an important factor affecting its later bone ingrowth and long-term stability. At present, the biological knee joint prosthesis mainly adopts the fixation method of interference press fit, and the artificial tibial platform is fixed on the tibia to obtain a certain initial stability. However, the existing biological knee joint prosthesis is prone to loosening under walking load, and complications such as tibial plateau subsidence or lifting often occur, resulting in insufficient initial stability of the tibial plateau, mostly due to the failure of the tibial plateau to achieve effective Strong fixation or transverse shear forces from eccentric loading cause fretting or displacement between the prosthesis-bone interface. Therefore, by improving the fixation design of the tibial platform of the biological knee joint and strengthening the firm combination of the joint prosthesis and the tibial tissue, it is necessary to enhance the initial stability of the biological knee joint prosthesis, as well as promote the later bone ingrowth and improve the long-term stability of the prosthesis. are of great significance.
发明内容SUMMARY OF THE INVENTION
本发明的目的是克服现有技术的不足，提供一种嵌卡式生物型膝关节胫骨平台。The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide an embedded-type biological knee joint tibial platform.
本发明的技术方案概述如下：The technical scheme of the present invention is summarized as follows:
一种嵌卡式生物型膝关节胫骨平台，包括肾形平台托1，在肾形平台托内向弯处的上表面设置有燕尾形凸块3，在燕尾形凸块的两个斜向枝的外侧面设置有后凹槽5，在肾形平台托与相对于燕尾形凸块3的外向弯处的上表面设置有弧形凸块2，在弧形凸块2的内侧面设置有前凹槽6，肾形平台托下表面连接有弯曲十字形筋板4，弯曲十字形筋板包括弧形筋板7，在弧形筋板7的中部的前、后两边分别连接有竖直筋板8。An embedded card-type biological knee joint tibial platform, comprising a kidney-shaped platform support 1, a dovetail-shaped bump 3 is provided on the upper surface of the inwardly curved part of the kidney-shaped platform support, and two oblique branches of the dovetail-shaped bump are provided on the upper surface. The outer side is provided with a rear groove 5, the upper surface of the kidney-shaped platform holder and the outward bend relative to the dovetail-shaped protrusion 3 is provided with an arc-shaped protrusion 2, and the inner side of the arc-shaped protrusion 2 is provided with a front concave. Slot 6, the lower surface of the kidney-shaped platform is connected with a curved cross-shaped rib plate 4, the curved cross-shaped rib plate includes an arc-shaped rib plate 7, and the front and rear sides of the middle of the arc-shaped rib plate 7 are respectively connected with vertical rib plates 8.
优选地弧形筋板7的弯曲半径为30-70mm，对应的圆心角度数为45°-55°，Preferably, the bending radius of the arc-shaped rib plate 7 is 30-70mm, and the corresponding central angle is 45°-55°,
弯曲十字形筋板4从上向下厚度减小，利于手术过程中胫骨平台安装至胫骨中。The thickness of the curved cross-shaped rib plate 4 decreases from top to bottom, which facilitates the installation of the tibial plateau into the tibia during the operation.
本发明优点：Advantages of the present invention:
1、本发明的一种嵌卡式生物型膝关节胫骨平台，采用钛合金3D打印一体成型，与传统胫骨平台机械加工成型方法相比，不仅减少成本和工时，降低产品的生产成本，提高生产效率。1. An embedded bio-type knee joint tibial platform of the present invention is integrally formed by titanium alloy 3D printing. Compared with the traditional tibial platform machining method, it not only reduces costs and man-hours, but also reduces product production costs and improves production. efficiency.
2、本发明的一种嵌卡式生物型膝关节胫骨平台采用“过盈压配”工作，使弯曲十字形筋板嵌入胫骨，将胫骨平台稳定地固定至胫骨上，在载荷作用下平台不会出现松动，从而解决现有生物型胫骨平台初始稳定性不足的难题。2. An embedded bio-type knee joint tibial platform of the present invention adopts the work of "interference and press fit", so that the curved cross-shaped rib plate is embedded in the tibia, and the tibial platform is stably fixed to the tibia. Loosening occurs, which solves the problem of insufficient initial stability of the existing biological tibial plateau.
3.本发明的弯曲十字形筋板，与现有生物型胫骨平台相比，可有效保证胫骨平台与胫骨界面受力更加均匀，获得初始稳定性，防止胫骨平台植入后期出现下沉或翘起等不良现象。3. Compared with the existing biological tibial platform, the curved cross-shaped rib plate of the present invention can effectively ensure that the tibial platform and the tibial interface are more evenly stressed, obtain initial stability, and prevent the tibial platform from sinking or warping in the later stage of implantation. and other adverse phenomena.
附图说明Description of drawings
图1为一种嵌卡式生物型膝关节胫骨平台立体示意图。FIG. 1 is a three-dimensional schematic diagram of an embedded biotype knee tibial plateau.
图2为一种嵌卡式生物型膝关节胫骨平台仰视图。Figure 2 is a bottom view of an embedded biotype knee joint tibial plateau.
图3为一种嵌卡式生物型膝关节胫骨平台(过前后方向的中轴线)剖视图。FIG. 3 is a cross-sectional view of an embedded biotype knee joint tibial plateau (through the central axis in the anterior-posterior direction).
图4为一种嵌卡式生物型膝关节胫骨平台(实施例1)仿真应力分析。Figure 4 is a simulation stress analysis of an embedded biotype knee tibial platform (Example 1).
图5为一种嵌卡式生物型膝关节胫骨平台(实施例2)仿真应力分析。FIG. 5 is a simulation stress analysis of an embedded biotype knee tibial platform (Example 2).
图6为一种嵌卡式生物型膝关节胫骨平台(实施例3)仿真应力分析。FIG. 6 is a simulation stress analysis of an embedded biotype knee tibial platform (Example 3).
图7为一种生物型膝关节胫骨平台嵌卡结构拔出力与位移关系曲线。Fig. 7 is a graph showing the relationship between the pull-out force and the displacement of a biological knee joint tibial plateau embedded structure.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明作进一步的说明。The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
实施例1Example 1
一种嵌卡式生物型膝关节胫骨平台，见图1、2和3，包括肾形平台托1，在肾形平台托内向弯处的上表面设置有燕尾形凸块3，在燕尾形凸块的两个斜向枝的外侧面设置有后凹槽5，在肾形平台托与相对于燕尾形凸块3的外向弯处的上表面设置有弧形凸块2，在弧形凸块2的内侧面设置有前凹槽6，(前凹槽6和后凹槽5可有效地将胫骨平台垫锁定在胫骨平台上)肾形平台托下表面连接有弯曲十字形筋板4，弯曲十字形筋板包括弧形筋板7，在弧形筋板7的中部的前、后两边分别连接有竖直筋板8。弧形筋板7的弯曲半径为50mm，对应的圆心角度数为50°，竖直筋板的前后方向的长度为10mm。弯曲十字形筋板的高度为25mm。An embedded card-type biological knee joint tibial platform, as shown in Figures 1, 2 and 3, includes a kidney-shaped platform support 1, and a dovetail-shaped convex block 3 is provided on the upper surface of the inwardly curved part of the kidney-shaped platform support. The outer sides of the two oblique branches of the block are provided with a rear groove 5, and an arc-shaped bump 2 is provided on the upper surface of the kidney-shaped platform bracket and the outward bend relative to the dovetail-shaped bump 3, and the arc-shaped bump The inner side of 2 is provided with a front groove 6, (the front groove 6 and the rear groove 5 can effectively lock the tibial plateau pad on the tibial plateau) The lower surface of the kidney-shaped platform is connected with a curved cross-shaped rib plate 4, which is bent The cross-shaped rib plate includes an arc-shaped rib plate 7, and a vertical rib plate 8 is connected to the front and rear sides of the middle of the arc-shaped rib plate 7, respectively. The bending radius of the arc-shaped rib plate 7 is 50mm, the corresponding number of center angles is 50°, and the length of the vertical rib plate in the front-rear direction is 10mm. The height of the curved cruciform ribs is 25mm.
实施例2Example 2
一种嵌卡式生物型膝关节胫骨平台，包括肾形平台托1，在肾形平台托内向弯处的上表面设置有燕尾形凸块3，在燕尾形凸块的两个斜向枝的外侧面设置有后凹槽5，在肾形平台托与相对于燕尾形凸块3的外向弯处的上表面设置有弧形凸块2，在弧形凸块2的内侧面设置有前凹槽6，(前凹槽6和后凹槽5可有效地将胫骨平台垫锁定在胫骨平台上)肾形平台托下表面连接有弯曲十字形筋板4，弯曲十字形筋板包括弧形筋板7，在弧形筋板7中部的前、后两边分别连接有竖直筋板8。弧形筋板7的弯曲半径为30mm，对应的圆心角度数为55°，竖直筋板的前后方向的长度为7mm。弯曲十字形筋板的高度为10mm。An embedded card-type biological knee joint tibial platform, comprising a kidney-shaped platform support 1, a dovetail-shaped bump 3 is provided on the upper surface of the inwardly curved part of the kidney-shaped platform support, and two oblique branches of the dovetail-shaped bump are provided on the upper surface. The outer side is provided with a rear groove 5, the upper surface of the kidney-shaped platform holder and the outward bend relative to the dovetail-shaped protrusion 3 is provided with an arc-shaped protrusion 2, and the inner side of the arc-shaped protrusion 2 is provided with a front concave. Slot 6, (the front groove 6 and the rear groove 5 can effectively lock the tibial plateau pad on the tibial plateau) The lower surface of the kidney-shaped platform is connected with a curved cross-shaped rib plate 4, and the curved cross-shaped rib plate includes arc-shaped ribs The plate 7 is connected with vertical rib plates 8 on the front and rear sides of the middle of the arc-shaped rib plate 7 respectively. The bending radius of the arc-shaped rib plate 7 is 30mm, the corresponding center angle number is 55°, and the length of the vertical rib plate in the front-rear direction is 7mm. The height of the curved cross-shaped rib is 10mm.
实施例3Example 3
一种嵌卡式生物型膝关节胫骨平台，包括肾形平台托1，在肾形平台托内向弯处的上表面设置有燕尾形凸块3，在燕尾形凸块的两个斜向枝的外侧面设置有后凹槽5，在肾形平台托与相对于燕尾形凸块3的外向弯处的上表面设置有弧形凸块2，在弧形凸块2的内侧面设置有前凹槽6，(前凹槽6和后凹槽5可有效地将胫骨平台垫锁定在胫骨平台上)肾形平台托下表面连接有弯曲十字形筋板4，弯曲十字形筋板包括弧形筋板7，在弧形筋板7的中部的前、后两边分别连接有竖直筋板8。弧形筋板7的弯曲半径为70mm，对应的圆心角度数为45°，竖直筋板的前后方向的长度为12.5mm。弯曲十字形筋板的高度为40mm。An embedded card-type biological knee joint tibial platform, comprising a kidney-shaped platform support 1, a dovetail-shaped bump 3 is provided on the upper surface of the inwardly curved part of the kidney-shaped platform support, and two oblique branches of the dovetail-shaped bump are provided on the upper surface. The outer side is provided with a rear groove 5, the upper surface of the kidney-shaped platform holder and the outward bend relative to the dovetail-shaped protrusion 3 is provided with an arc-shaped protrusion 2, and the inner side of the arc-shaped protrusion 2 is provided with a front concave. Slot 6, (the front groove 6 and the rear groove 5 can effectively lock the tibial plateau pad on the tibial plateau) The lower surface of the kidney-shaped platform is connected with a curved cross-shaped rib plate 4, and the curved cross-shaped rib plate includes arc-shaped ribs The plate 7 is connected with a vertical rib plate 8 on the front and rear sides of the middle of the arc-shaped rib plate 7, respectively. The bending radius of the arc-shaped rib plate 7 is 70mm, the corresponding number of central angles is 45°, and the length of the vertical rib plate in the front-rear direction is 12.5mm. The height of the curved cruciform ribs is 40mm.
实验experiment
对本发明各实施例的一种嵌卡式生物型膝关节胫骨平台进行仿真应力分析(FEA)，如图4、图5、图6所示，结果表明在本发明一种嵌卡式生物型膝关节胫骨平台与胫骨界面处应力非常均一，且应力较大的面积很小。A simulated stress analysis (FEA) was performed on the tibial platform of an embedded biotype knee joint according to each embodiment of the present invention, as shown in Figure 4, Figure 5, and Figure 6. The results show that the embedded biotype knee joint of the present invention The stress at the interface between the tibial plateau and the tibia of the joint is very uniform, and the area where the stress is large is very small.
为进一步验证本发明的初始稳定性，将本发明一种嵌卡式生物型膝关节胫骨平台安装于猪胫骨上，用材料拉伸试验机进行拔出力测试，实验结果显示本发明一种嵌卡式生物型膝关节胫骨平台的拔出力高达255N，本发明耐拔出能力高，稳定性好，见图7。实验结果表明本发明一种嵌卡式生物型膝关节胫骨平台使胫骨平台与胫骨界面处应力非常均一，克服了胫骨平台植入后期出现下沉或翘起等不良现象的难题，从而提高了生物型膝关节胫骨平台的初始稳定性。In order to further verify the initial stability of the present invention, an embedded biotype knee joint tibial platform of the present invention was installed on the pig tibia, and the pull-out force test was carried out with a material tensile testing machine. The pull-out force of the cassette-type biological knee joint tibial platform is as high as 255N, and the present invention has high pull-out resistance and good stability, as shown in FIG. 7 . The experimental results show that the embedded bio-type knee joint tibial plateau of the present invention makes the stress at the interface between the tibial plateau and the tibial very uniform, overcomes the problem of subsidence or warping of the tibial plateau in the later stage of implantation, thereby improving the biological performance. Initial stability of the tibial plateau in the knee joint.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308094.1ACN109938886A (en) | 2019-04-17 | 2019-04-17 | An embedded biological type knee tibial platform |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308094.1ACN109938886A (en) | 2019-04-17 | 2019-04-17 | An embedded biological type knee tibial platform |
| Publication Number | Publication Date |
|---|---|
| CN109938886Atrue CN109938886A (en) | 2019-06-28 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910308094.1APendingCN109938886A (en) | 2019-04-17 | 2019-04-17 | An embedded biological type knee tibial platform |
| Country | Link |
|---|---|
| CN (1) | CN109938886A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658341A (en)* | 1993-03-10 | 1997-08-19 | Medinov S.A. | Tibial implant for a knee prosthesis |
| RU2237453C1 (en)* | 2003-09-08 | 2004-10-10 | Загородний Николай Васильевич | Device for making total endoprosthesis of knee joint |
| US20060265079A1 (en)* | 2005-05-19 | 2006-11-23 | Howmedica Osteonics Corp. | Modular keel tibial component |
| US20080091273A1 (en)* | 2006-10-13 | 2008-04-17 | Hazebrouck Stephen A | Mobile/fixed prosthetic knee systems |
| US20100100191A1 (en)* | 2008-10-17 | 2010-04-22 | Biomet Manufacturing Corp. | Tibial Tray Having a Reinforcing Member |
| US20100298947A1 (en)* | 2009-04-22 | 2010-11-25 | Unger Anthony S | Precision Total Knee Arthroplasty |
| CN102133138A (en)* | 2010-01-21 | 2011-07-27 | 德普伊产品公司 | Knee prosthesis system |
| CN105030384A (en)* | 2015-08-03 | 2015-11-11 | 北京威高亚华人工关节开发有限公司 | Total-knee-joint replacement prosthesis |
| CN210056348U (en)* | 2019-04-17 | 2020-02-14 | 嘉思特华剑医疗器材(天津)有限公司 | Embedded biological knee joint tibial platform |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658341A (en)* | 1993-03-10 | 1997-08-19 | Medinov S.A. | Tibial implant for a knee prosthesis |
| RU2237453C1 (en)* | 2003-09-08 | 2004-10-10 | Загородний Николай Васильевич | Device for making total endoprosthesis of knee joint |
| US20060265079A1 (en)* | 2005-05-19 | 2006-11-23 | Howmedica Osteonics Corp. | Modular keel tibial component |
| US20080091273A1 (en)* | 2006-10-13 | 2008-04-17 | Hazebrouck Stephen A | Mobile/fixed prosthetic knee systems |
| US20100100191A1 (en)* | 2008-10-17 | 2010-04-22 | Biomet Manufacturing Corp. | Tibial Tray Having a Reinforcing Member |
| US20100298947A1 (en)* | 2009-04-22 | 2010-11-25 | Unger Anthony S | Precision Total Knee Arthroplasty |
| CN102133138A (en)* | 2010-01-21 | 2011-07-27 | 德普伊产品公司 | Knee prosthesis system |
| CN105030384A (en)* | 2015-08-03 | 2015-11-11 | 北京威高亚华人工关节开发有限公司 | Total-knee-joint replacement prosthesis |
| CN210056348U (en)* | 2019-04-17 | 2020-02-14 | 嘉思特华剑医疗器材(天津)有限公司 | Embedded biological knee joint tibial platform |
| Publication | Publication Date | Title |
|---|---|---|
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information | Address after:No.27 Ziyang Road Nankai District Tianjin 300190 Applicant after:Jiasite medical equipment (Tianjin) Co.,Ltd. Address before:No.27 Ziyang Road Nankai District Tianjin 300190 Applicant before:Jiasite Huajian Medical Equipment(Tianjin)Co.,Ltd. | |
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20190628 |