技术领域Technical field
本发明涉及医疗器械领域，具体而言，涉及一种人工椎体假体组件。The present invention relates to the field of medical devices, and specifically to an artificial vertebral body prosthesis assembly.
背景技术Background technique
颈部疼痛已成为临床就诊的主要原因之一，因颈椎问题就诊的患者数量占所有疾病的1.5％。经前路颈椎椎体次全切除融合术是治疗颈椎疾病最常用的手术方法之一，被广泛应用于颈椎退行性病变、创伤、肿瘤等疾病。Neck pain has become one of the main reasons for clinical visits, and the number of patients seeking treatment for cervical spine problems accounts for 1.5% of all diseases. Anterior cervical subtotal corpectomy and fusion is one of the most commonly used surgical methods to treat cervical spine diseases and is widely used in cervical spine degenerative diseases, trauma, tumors and other diseases.
目前，经前路颈椎椎体次全切除融合术中最常用的器械是钛笼结合颈前路钢板，该方法被证明可以为术后重建颈椎节段提供充分的稳定性，从而促进融合、防止钛笼移位或塌陷，被脊柱外科医生广泛采用。但是该方法仍存在诸多缺点：前路钢板的安装使该术式变得复杂，延长了手术时间，增加了出血量；前路钢板对邻近组织的压迫，可导致食管、气管损伤，吞咽困难，加速邻近节段退行性病变。Currently, the most commonly used instrument in anterior cervical subtotal corpectomy and fusion is a titanium cage combined with an anterior cervical plate. This method has been proven to provide sufficient stability for postoperative reconstruction of cervical spine segments, thereby promoting fusion and preventing The titanium cage is displaced or collapsed and is widely used by spine surgeons. However, this method still has many shortcomings: the installation of the anterior steel plate complicates the surgery, prolongs the operation time, and increases the amount of bleeding; the compression of the anterior steel plate on adjacent tissues can cause damage to the esophagus and trachea, and difficulty in swallowing. Accelerate degeneration of adjacent segments.
上述的钛笼为简单的圆柱结构，术中需依赖术者经验对其两端进行修剪，修剪后的钛笼端面不能与相邻的节段椎体贴合，接触面积小且存在锐利凸起，导致相邻的节段破坏，钛笼下沉，破坏术后颈椎的稳定性。The above-mentioned titanium cage is a simple cylindrical structure. During the operation, it is necessary to rely on the experience of the surgeon to trim its two ends. The trimmed end surface of the titanium cage cannot fit the adjacent segmental vertebral body. The contact area is small and there are sharp protrusions. , leading to destruction of adjacent segments and sinking of the titanium cage, destroying the stability of the postoperative cervical spine.
发明内容Contents of the invention
本发明的主要目的在于提供一种人工椎体假体组件，以解决相关技术中的修剪后的钛笼端面不能与相邻的节段椎体贴合，破坏术后颈椎的稳定性的问题。The main purpose of the present invention is to provide an artificial vertebral body prosthesis assembly to solve the problem in the related art that the end surface of the trimmed titanium cage cannot fit with the adjacent segmental vertebral body, thereby destroying the stability of the cervical spine after surgery.
为了实现上述目的，本发明提供了一种人工椎体假体组件，包括：第一椎体假体，包括上下连接的第一上终板段和第一下终板段，第一上终板段上设置有第一连接孔，第一下终板段上设置有第二连接孔，第一上终板段的顶面和第一下终板段的底面之间形成第一夹角，第一夹角等于4n度，n为正整数或者负整数；第一螺钉和第二螺钉，第一螺钉穿设于第一连接孔，第二螺钉穿设于第二连接孔；第二椎体假体，包括上下连接的第二上终板段和第二下终板段，第二上终板段上设置有第三连接孔，第二下终板段上设置有第四连接孔，第二上终板段的顶面和第二下终板段的底面之间形成第二夹角，第二夹角等于0度；第三螺钉和第四螺钉，第三螺钉穿设于第三连接孔，第四螺钉穿设于第四连接孔；锁定结构，设置在第一连接孔和第一螺钉之间、第二连接孔和第二螺钉之间、第三连接孔和第三螺钉之间以及第四连接孔和第四螺钉之间。In order to achieve the above object, the present invention provides an artificial vertebral body prosthesis assembly, including: a first vertebral body prosthesis, including a first upper endplate segment and a first lower endplate segment connected up and down, the first upper endplate A first connection hole is provided on the segment, a second connection hole is provided on the first lower end plate segment, a first included angle is formed between the top surface of the first upper end plate segment and the bottom surface of the first lower end plate segment, An included angle is equal to 4n degrees, n is a positive integer or a negative integer; the first screw and the second screw, the first screw penetrates the first connection hole, the second screw penetrates the second connection hole; the second vertebral body is false The body includes a second upper end plate segment and a second lower end plate segment that are connected up and down. The second upper end plate segment is provided with a third connection hole, and the second lower end plate segment is provided with a fourth connection hole. A second included angle is formed between the top surface of the upper end plate segment and the bottom surface of the second lower end plate segment, and the second included angle is equal to 0 degrees; the third screw and the fourth screw, the third screw is inserted through the third connection hole , the fourth screw passes through the fourth connection hole; the locking structure is provided between the first connection hole and the first screw, between the second connection hole and the second screw, between the third connection hole and the third screw, and Between the fourth connection hole and the fourth screw.
进一步地，锁定结构包括锁定环及与锁定环配合的锥形螺纹，第一连接孔、第二连接孔、第三连接孔以及第四连接孔的孔壁上均设置有锁定环，第一螺钉、第二螺钉、第三螺钉以及第四螺钉的钉头上均设置有锥形螺纹。Further, the locking structure includes a locking ring and a tapered thread matching the locking ring. Locking rings are provided on the walls of the first connection hole, the second connection hole, the third connection hole and the fourth connection hole. The first screw , the second screw, the third screw and the fourth screw are all provided with tapered threads on their heads.
进一步地，锁定环的顶面为第一凹球面，锁定环的内孔的孔壁包括交替连接的内凹弧段和外凸弧段，外凸弧段所对应的角度在108度至120度之间，外凸弧段的半径在1毫米至1.7毫米之间，外凸弧段能够与锥形螺纹锁定配合。Further, the top surface of the locking ring is a first concave spherical surface, and the hole wall of the inner hole of the locking ring includes alternately connected inner concave arc segments and outer convex arc segments, and the corresponding angle of the outer convex arc segments is between 108 degrees and 120 degrees. The radius of the convex arc segment is between 1 mm and 1.7 mm, and the convex arc segment can be locked and matched with the tapered thread.
进一步地，第一上终板段和第一下终板段为一体结构或者分体结构，其中，当第一上终板段和第一下终板段为分体结构时，第一上终板段和第一下终板段之间设置有相互接触的凹弧面和第一凸弧面，或者，第一上终板段和第一下终板段之间设置有相互接触的第二凹球面和第一凸球面。Further, the first upper end plate segment and the first lower end plate segment have an integrated structure or a split structure. When the first upper end plate segment and the first lower end plate segment have a split structure, the first upper end plate segment has a split structure. The plate segment and the first lower end plate segment are provided with mutually contacting concave arc surfaces and first convex arc surfaces, or, the first upper end plate segment and the first lower end plate segment are provided with mutually contacting second Concave spherical surface and first convex spherical surface.
进一步地，第一上终板段和第一下终板段通过连接结构连接成分体结构，连接结构包括滑动连接件或者螺纹连接件。Further, the first upper end plate segment and the first lower end plate segment are connected to the component structure through a connecting structure, and the connecting structure includes a sliding connector or a threaded connector.
进一步地，连接结构包括滑动连接件时，滑动连接件包括T形滑槽及与T形滑槽配合的T形滑块，T形滑槽及T形滑块均为沿前后方向延伸的弧形状；或者，滑动连接件包括滑腔及位于滑腔内的滑杆，滑腔包括球形凹腔及与球形凹腔连通的柱形孔，滑杆包括位于球形凹腔内的球头及位于柱形孔内的柱形杆。Further, when the connection structure includes a sliding connection piece, the sliding connection piece includes a T-shaped chute and a T-shaped slide block that cooperates with the T-shaped chute. Both the T-shaped chute and the T-shaped slide block are arc-shaped extending in the front and rear direction. ; Or, the sliding connection piece includes a sliding cavity and a sliding rod located in the sliding cavity. The sliding cavity includes a spherical cavity and a cylindrical hole connected with the spherical cavity. The sliding rod includes a ball head located in the spherical cavity and a cylindrical hole. Cylindrical rod inside the hole.
进一步地，T形滑槽的前端为入口端，T形滑槽的后端为封闭端，入口端位于第一椎体假体的前侧，封闭端与第一椎体假体的后侧具有预设距离，第一椎体假体内设置有沿上下方向延伸的第一植骨孔，滑动连接件还包括穿设在第一植骨孔内的锁紧件，锁紧件具有与T形滑块抵顶配合以使T形滑块固定在T形滑槽内的第一锁紧位置，以及避让T形滑块以使T形滑块在T形滑槽内前后滑动的第一调节位置。Further, the front end of the T-shaped chute is the inlet end, and the rear end of the T-shaped chute is the closed end. The inlet end is located on the front side of the first vertebral body prosthesis, and the closed end has a gap with the back side of the first vertebral body prosthesis. At a preset distance, the first vertebral body prosthesis is provided with a first bone grafting hole extending in the up and down direction. The sliding connection member also includes a locking member that is disposed in the first bone grafting hole. The locking member has a T-shaped The slide block is pushed against the first locking position to fix the T-shaped slide block in the T-shaped slide groove, and the first adjustment position is to avoid the T-shaped slide block so that the T-shaped slide block slides back and forth in the T-shaped slide groove. .
进一步地，连接结构包括螺纹连接件时，螺纹连接件包括螺栓及与螺栓连接的螺母，当第一上终板段和第一下终板段之间设置有凹弧面和第一凸弧面时，螺母朝向凹弧面的一端设置有第二凸弧面；或者，当第一上终板段和第一下终板段之间设置有第二凹球面和第一凸球面时，螺母朝向第二凹球面的一端设置有第二凸球面。Further, when the connection structure includes a threaded connector, the threaded connector includes a bolt and a nut connected to the bolt, and when a concave arc surface and a first convex arc surface are provided between the first upper end plate segment and the first lower end plate segment When the nut is provided with a second convex arc surface at one end facing the concave arc surface; or, when a second concave spherical surface and a first convex spherical surface are provided between the first upper end plate segment and the first lower end plate segment, the nut faces the concave arc surface. A second convex spherical surface is provided at one end of the second concave spherical surface.
进一步地，第一上终板段内设置有沿上下方向延伸并贯通第一上终板段的顶面和底面的第二植骨孔，第一下终板段内设置有沿上下方向延伸并贯通第一下终板段的顶面和底面的第三植骨孔；第二植骨孔包括第一孔段及与第一孔段连接的第二孔段，第一孔段的直径大于第二孔段的直径，第一孔段和第二孔段之间设置有第三凹球面，第三植骨孔包括与第二孔段连通的第三孔段及与第三孔段连接的第四孔段，第三孔段和第四孔段之间设置有第四凹球面，第四孔段的直径大于第三孔段的直径，第三孔段的直径大于第二孔段的直径，螺栓依次穿过于第一孔段、第二孔段、第三孔段以及第四孔段，螺母在第四孔段内与螺栓连接，螺栓具有与螺母旋紧配合以使第二凸球面与第四凹球面抵接配合的第二锁紧位置，以及与螺母旋松配合以使第二凸球面相对于第四凹球面周向摆动的第二调节位置。Further, the first upper endplate segment is provided with a second bone grafting hole extending in the up-and-down direction and penetrating the top and bottom surfaces of the first upper end-plate segment, and the first lower end-plate segment is provided with a second bone grafting hole extending in the up-and-down direction and penetrating through the top and bottom surfaces of the first upper endplate segment. A third bone grafting hole penetrating the top and bottom surfaces of the first lower endplate segment; the second bone grafting hole includes a first hole segment and a second hole segment connected to the first hole segment, and the diameter of the first hole segment is larger than that of the first hole segment. The diameter of the two hole segments, a third concave spherical surface is provided between the first hole segment and the second hole segment, the third bone grafting hole includes a third hole segment connected to the second hole segment and a third hole segment connected to the third hole segment. Four-hole section, a fourth concave spherical surface is provided between the third hole section and the fourth hole section, the diameter of the fourth hole section is greater than the diameter of the third hole section, and the diameter of the third hole section is greater than the diameter of the second hole section, The bolts pass through the first hole section, the second hole section, the third hole section and the fourth hole section in sequence, the nut is connected to the bolt in the fourth hole section, and the bolt has a screw-fitting function with the nut to make the second convex spherical surface and the third hole section A second locking position in which the four concave spherical surfaces abut and fit, and a second adjustment position in which the second convex spherical surface swings circumferentially relative to the fourth concave spherical surface and is loosely matched with the nut.
进一步地，第一连接孔和第二连接孔均为间隔设置的两个，两个第一连接孔的轴线之间形成第三夹角，两个第二连接孔的轴线之间形成第四夹角，第三夹角和第四夹角均在第一椎体假体的前侧面上的投影的角度在13度至17度之间，第三夹角和第四夹角均在第一椎体假体的横截面上的投影的角度在8度至12度之间，第一连接孔的轴线和第二连接孔的轴线之间形成第五夹角，第五夹角在第一椎体假体的前后方向的纵截面上的投影的角度在88度至92度之间；第三连接孔和第四连接孔均为间隔设置的两个，两个第三连接孔的轴线之间形成第六夹角，两个第四连接孔的轴线之间形成第七夹角，第六夹角和第七夹角均在第二椎体假体的前侧面上的投影的角度在16度至20度之间，第六夹角和第七夹角均在第二椎体假体的横截面上的投影的角度在18度至22度之间，第三连接孔的轴线和第四连接孔的轴线之间形成第八夹角，第八夹角在第二椎体假体的前后方向的纵截面上的投影的角度在78度至82度之间。Further, the first connection holes and the second connection holes are two spaced apart, a third angle is formed between the axes of the two first connection holes, and a fourth angle is formed between the axes of the two second connection holes. The angle of projection on the front side of the first vertebral body prosthesis is between 13 degrees and 17 degrees. The third included angle and the fourth included angle are both on the first vertebra. The angle of projection on the cross section of the body prosthesis is between 8 degrees and 12 degrees. A fifth included angle is formed between the axis of the first connecting hole and the axis of the second connecting hole. The fifth included angle is at the first vertebral body. The projection angle on the longitudinal section in the front-to-back direction of the prosthesis is between 88 degrees and 92 degrees; the third connection hole and the fourth connection hole are two spaced apart, and the axes of the two third connection holes are formed between The sixth included angle is a seventh included angle formed between the axes of the two fourth connecting holes. The projection angles of the sixth included angle and the seventh included angle on the front side of the second vertebral body prosthesis are between 16 degrees and between 20 degrees, the projection angle of the sixth included angle and the seventh included angle on the cross section of the second vertebral body prosthesis is between 18 degrees and 22 degrees, the axis of the third connecting hole and the fourth connecting hole An eighth included angle is formed between the axes of the second vertebral body prosthesis, and the projection angle of the eighth included angle on the longitudinal section in the front-to-back direction of the second vertebral body prosthesis is between 78 degrees and 82 degrees.
进一步地，第一上终板段的顶面设置有向上延伸的第一限位凸板，第一限位凸板位于第一上终板段的前侧边沿处，第一下终板段的底面设置有向下延伸的第二限位凸板，第二限位凸板位于第一下终板段的前侧边沿处；第二上终板段的顶面设置有向上延伸的第三限位凸板，第三限位凸板位于第二上终板段的前侧边沿处，第二下终板段的底面设置有向下延伸的第四限位凸板，第四限位凸板位于第二下终板段的前侧边沿处；第一上终板段和第一下终板段的连接处设置有相背设置的两个夹持槽，第二上终板段和第二下终板段的连接处设置有夹持孔。Further, the top surface of the first upper end plate section is provided with a first limiting convex plate extending upward, the first limiting convex plate is located at the front edge of the first upper end plate section, and the first lower end plate section The bottom surface is provided with a second limiting convex plate extending downward, and the second limiting convex plate is located at the front edge of the first lower end plate section; the top surface of the second upper end plate section is provided with a third limiting plate extending upward. The third limiting convex plate is located at the front edge of the second upper end plate section. The bottom surface of the second lower end plate section is provided with a downwardly extending fourth limiting convex plate. The fourth limiting convex plate Located at the front edge of the second lower end plate segment; the connection between the first upper end plate segment and the first lower end plate segment is provided with two clamping grooves arranged oppositely, and the second upper end plate segment and the second A clamping hole is provided at the connection point of the lower end plate segment.
应用本发明的技术方案，人工椎体假体组件包括：第一椎体假体、第一螺钉、第二螺钉、第二椎体假体、第三螺钉、第四螺钉以及锁定结构。第一椎体假体包括上下连接的第一上终板段和第一下终板段，第一上终板段上设置有第一连接孔，第一下终板段上设置有第二连接孔，第一上终板段的顶面和第一下终板段的底面之间形成第一夹角，第一夹角等于4n度，n为正整数或者负整数。可以选择第一椎体假体植入至需要匹配的人体的相邻的节段椎体间，使得第一上终板段的顶面与第一椎体假体上方的相邻的节段椎体贴合，第一下终板段的底面与第一椎体假体下方的相邻的节段椎体贴合。第一螺钉穿设于第一连接孔，第一螺钉植入至上方的相邻的节段椎体，以将第一上终板段与上方的相邻的节段椎体连接，第二螺钉穿设于第二连接孔，第二螺钉植入至下方的相邻的节段椎体，以将第一下终板段与下方的相邻的节段椎体连接。第二椎体假体包括上下连接的第二上终板段和第二下终板段，第二上终板段上设置有第三连接孔，第二下终板段上设置有第四连接孔，第二上终板段的顶面和第二下终板段的底面之间形成第二夹角，第二夹角等于0度。也可以选择第二椎体假体植入至需要匹配的人体的相邻的节段椎体间，使得第二上终板段的顶面与第二椎体假体上方的相邻的节段椎体贴合，第二下终板段的底面与第二椎体假体下方的相邻的节段椎体贴合。第三螺钉穿设于第三连接孔，第三螺钉植入至上方的相邻的节段椎体，以将第二上终板段与上方的相邻的节段椎体连接，第四螺钉穿设于第四连接孔，第四螺钉植入至下方的相邻的节段椎体，以将第二下终板段与下方的相邻的节段椎体连接。这样，可以选择第一椎体假体和第二椎体假体中的一个或者两个植入至人体的相邻的节段椎体间，实现与相邻椎体的更好的匹配，人工椎体假体组件不存在修剪的操作，避免破坏相邻的节段椎体，能够保证人工椎体假体组件植入的稳定性。并且由于锁定结构设置在第一连接孔和第一螺钉之间、第二连接孔和第二螺钉之间、第三连接孔和第三螺钉之间以及第四连接孔和第四螺钉之间，防止已经处于植入位置的第一螺钉、第二螺钉、第三螺钉和第四螺钉松动，有效保证人工椎体假体组件植入的稳定性，有效地降低了破坏术后颈椎的稳定性。因此本申请的技术方案有效解决了相关技术中的修剪后的钛笼端面不能与相邻的节段椎体贴合，破坏术后颈椎的稳定性的问题。Applying the technical solution of the present invention, the artificial vertebral body prosthesis assembly includes: a first vertebral body prosthesis, a first screw, a second screw, a second vertebral body prosthesis, a third screw, a fourth screw and a locking structure. The first vertebral body prosthesis includes a first upper endplate segment and a first lower endplate segment that are connected up and down. The first upper endplate segment is provided with a first connection hole, and the first lower endplate segment is provided with a second connection hole. hole, a first included angle is formed between the top surface of the first upper end plate segment and the bottom surface of the first lower end plate segment, the first included angle is equal to 4n degrees, n is a positive integer or a negative integer. The first vertebral body prosthesis can be selected to be implanted between adjacent segmental vertebral bodies of the human body that needs to be matched, so that the top surface of the first superior endplate segment is in contact with the adjacent segmental vertebral body above the first vertebral body prosthesis. Body fit, the bottom surface of the first lower endplate segment fits the adjacent segmental vertebral body below the first vertebral body prosthesis. The first screw penetrates the first connecting hole, and the first screw is implanted into the upper adjacent segmental vertebral body to connect the first superior endplate segment with the upper adjacent segmental vertebral body, and the second screw The second screw is passed through the second connection hole and implanted into the adjacent segmental vertebral body below to connect the first lower endplate segment with the adjacent segmental vertebral body below. The second vertebral body prosthesis includes a second upper endplate segment and a second lower endplate segment that are connected up and down. The second upper endplate segment is provided with a third connection hole, and the second lower endplate segment is provided with a fourth connection hole. hole, a second included angle is formed between the top surface of the second upper end plate segment and the bottom surface of the second lower end plate segment, and the second included angle is equal to 0 degrees. You can also choose to implant the second vertebral body prosthesis between adjacent segmental vertebral bodies of the human body that needs to be matched, so that the top surface of the second superior endplate segment is in contact with the adjacent segment above the second vertebral body prosthesis. The vertebral bodies fit together, and the bottom surface of the second lower endplate segment fits into the adjacent segmental vertebral bodies below the second vertebral body prosthesis. The third screw is passed through the third connection hole, and the third screw is implanted into the upper adjacent segmental vertebral body to connect the second superior endplate segment with the upper adjacent segmental vertebral body. The fourth screw The fourth screw is passed through the fourth connecting hole and implanted into the lower adjacent segmental vertebral body to connect the second lower endplate segment with the lower adjacent segmental vertebral body. In this way, one or both of the first vertebral body prosthesis and the second vertebral body prosthesis can be selected to be implanted between adjacent segmental vertebral bodies of the human body to achieve better matching with the adjacent vertebral bodies. There is no trimming operation for the vertebral body prosthesis component, which avoids damaging the adjacent segmental vertebral bodies and ensures the stability of the implantation of the artificial vertebral body prosthesis component. And because the locking structure is provided between the first connection hole and the first screw, between the second connection hole and the second screw, between the third connection hole and the third screw, and between the fourth connection hole and the fourth screw, It prevents the first screw, the second screw, the third screw and the fourth screw that are already in the implantation position from loosening, effectively ensures the stability of the implantation of the artificial vertebral prosthesis component, and effectively reduces the damage to the stability of the cervical spine after surgery. Therefore, the technical solution of the present application effectively solves the problem in the related art that the end surface of the titanium cage after trimming cannot fit with the adjacent segmental vertebral body, thereby destroying the stability of the cervical spine after surgery.
附图说明Description of the drawings
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The description and drawings that constitute a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached picture:
图1示出了根据本发明的人工椎体假体组件的实施例一的第一椎体假体的立体结构示意图；Figure 1 shows a schematic three-dimensional structural view of a first vertebral body prosthesis according to Embodiment 1 of the artificial vertebral body prosthesis assembly of the present invention;
图2示出了图1的人工椎体假体组件的第一椎体假体的主视示意图；Figure 2 shows a schematic front view of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 1;
图3示出了图1的人工椎体假体组件的第一椎体假体的侧视示意图；Figure 3 shows a schematic side view of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 1;
图4示出了图1的人工椎体假体组件的第一椎体假体的横向剖切后的剖视图；Figure 4 shows a cross-sectional view of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 1 after transverse section;
图5示出了图1的人工椎体假体组件的第一椎体假体的第一连接孔处的上下方向的剖视图；Figure 5 shows an up-and-down cross-sectional view of the first connection hole of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 1;
图6示出了图1的人工椎体假体组件的第一椎体假体的第一植骨孔处的上下方向的剖视图；Figure 6 shows an up-and-down cross-sectional view of the first bone grafting hole of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 1;
图7示出了图1的人工椎体假体组件的第一螺钉穿过第一连接孔使锁定结构进行锁定配合时的局部剖视图；Figure 7 shows a partial cross-sectional view of the artificial vertebral body prosthesis assembly of Figure 1 when the first screw passes through the first connection hole so that the locking structure engages in locking fit;
图8示出了图1的人工椎体假体组件的锁定环的俯视示意图；Figure 8 shows a schematic top view of the locking ring of the artificial vertebral prosthesis assembly of Figure 1;
图9示出了根据本发明的人工椎体假体组件的实施例一的第二椎体假体的立体结构示意图；Figure 9 shows a schematic three-dimensional structural view of the second vertebral body prosthesis according to Embodiment 1 of the artificial vertebral body prosthesis assembly of the present invention;
图10示出了图9的人工椎体假体组件的第二椎体假体的主视示意图；Figure 10 shows a schematic front view of the second vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 9;
图11示出了图9的人工椎体假体组件的第二椎体假体的侧视示意图；Figure 11 shows a schematic side view of the second vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 9;
图12示出了图9的人工椎体假体组件的第二椎体假体的横向剖切后的剖视图；Figure 12 shows a cross-sectional view of the second vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 9;
图13示出了图9的人工椎体假体组件的第二椎体假体的第三连接孔处的前后方向的纵向剖视图；Figure 13 shows a longitudinal cross-sectional view in the anteroposterior direction at the third connection hole of the second vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 9;
图14示出了根据本发明的人工椎体假体组件的实施例一的第一螺钉、第二螺钉、第三螺钉及第四螺钉的主视示意图；Figure 14 shows a schematic front view of the first screw, the second screw, the third screw and the fourth screw of the first embodiment of the artificial vertebral prosthesis assembly according to the present invention;
图15示出了根据本发明的人工椎体假体组件的实施例二的第一椎体假体的主视示意图；Figure 15 shows a schematic front view of the first vertebral body prosthesis according to the second embodiment of the artificial vertebral body prosthesis assembly of the present invention;
图16示出了图15的人工椎体假体组件的第一椎体假体的侧视示意图；Figure 16 shows a schematic side view of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 15;
图17示出了图15的人工椎体假体组件的第一椎体假体的左右方向的纵向剖视图；Figure 17 shows a left-right longitudinal cross-sectional view of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 15;
图18示出了根据本发明的人工椎体假体组件的实施例三的第一椎体假体的主视示意图；Figure 18 shows a schematic front view of the first vertebral body prosthesis according to Embodiment 3 of the artificial vertebral body prosthesis assembly of the present invention;
图19示出了图18的人工椎体假体组件的第一椎体假体的侧视示意图；Figure 19 shows a schematic side view of the first vertebral body prosthesis of the artificial vertebral body prosthesis assembly of Figure 18;
图20示出了图18的人工椎体假体组件的螺栓与螺母旋紧配合时的纵向剖视图；Figure 20 shows a longitudinal cross-sectional view of the bolts and nuts of the artificial vertebral prosthesis assembly of Figure 18 when they are tightened;
图21示出了图18的人工椎体假体组件的螺栓与螺母旋松配合时的纵向剖视图；Figure 21 shows a longitudinal cross-sectional view of the artificial vertebral body prosthesis assembly of Figure 18 when the bolts and nuts are loosened and engaged;
图22示出了图18的人工椎体假体组件的螺栓与螺母的侧视示意图；Figure 22 shows a schematic side view of the bolts and nuts of the artificial vertebral prosthesis assembly of Figure 18;
图23示出了根据本发明的人工椎体假体组件的实施例一的第一椎体假体植入至节段椎体间的侧视示意图。Figure 23 shows a schematic side view of the first vertebral body prosthesis implanted between segmental vertebral bodies according to Embodiment 1 of the artificial vertebral body prosthesis assembly of the present invention.
其中，上述附图包括以下附图标记：Among them, the above-mentioned drawings include the following reference signs:
1、节段椎体；1. Segmental vertebral body;
10、第一椎体假体；11、第一上终板段；111、第一连接孔；112、第一限位凸板；12、第一下终板段；121、第二连接孔；122、第二限位凸板；10. The first vertebral body prosthesis; 11. The first upper endplate segment; 111. The first connection hole; 112. The first limiting convex plate; 12. The first lower endplate segment; 121. The second connection hole; 122. The second limiting convex plate;
131、凹弧面；132、第一凸弧面；14、第一植骨孔；A1、第一夹角；A3、第三夹角；A4、第四夹角；A5、第五夹角；155、夹持槽；131. Concave arc surface; 132. First convex arc surface; 14. First bone grafting hole; A1, first included angle; A3, third included angle; A4, fourth included angle; A5, fifth included angle; 155. Clamping groove;
21、第一螺钉；22、第二螺钉；23、连接结构；231、T形滑槽；232、T形滑块；21. First screw; 22. Second screw; 23. Connection structure; 231. T-shaped chute; 232. T-shaped slider;
30、第二椎体假体；31、第二上终板段；311、第三连接孔；312、第三限位凸板；32、第二下终板段；321、第四连接孔；322、第四限位凸板；A2、第二夹角；30. The second vertebral body prosthesis; 31. The second upper endplate segment; 311. The third connection hole; 312. The third limiting convex plate; 32. The second lower endplate segment; 321. The fourth connection hole; 322. The fourth limiting convex plate; A2, the second included angle;
331、第二凹球面；332、第一凸球面；333、第二凸球面；A6、第六夹角；A7、第七夹角；A8、第八夹角；345、夹持孔；331. The second concave spherical surface; 332. The first convex spherical surface; 333. The second convex spherical surface; A6, the sixth included angle; A7, the seventh included angle; A8, the eighth included angle; 345. Clamping hole;
35、第二植骨孔；351、第一孔段；352、第二孔段；353、第三凹球面；36、第三植骨孔；361、第三孔段；362、第四孔段；363、第四凹球面；35. The second bone grafting hole; 351. The first hole section; 352. The second hole section; 353. The third concave spherical surface; 36. The third bone grafting hole; 361. The third hole section; 362. The fourth hole section ;363. The fourth concave spherical surface;
41、第三螺钉；42、第四螺钉；431、螺栓；432、螺母；41. The third screw; 42. The fourth screw; 431. Bolt; 432. Nut;
51、锁定环；511、第一凹球面；512、内凹弧段；513、外凸弧段；52、锥形螺纹。51. Locking ring; 511. First concave spherical surface; 512. Inward concave arc segment; 513. Outward convex arc segment; 52. Tapered thread.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，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。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。基于本发明中的实施例，本领域普通技术人员在没有作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 will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, operations, means, components and/or combinations thereof.
除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。The relative arrangement of components and steps, numerical expressions, and numerical values set forth in these examples do not limit the scope of the invention unless specifically stated otherwise. At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the authorized specification. In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters refer to similar items in the following figures, so that once an item is defined in one figure, it does not need further discussion in subsequent figures.
如图1至图14及图23所示，本申请的人工椎体假体组件的实施例一包括：第一椎体假体10、第一螺钉21、第二螺钉22、第二椎体假体30、第三螺钉41、第四螺钉42以及锁定结构。第一椎体假体10包括上下连接的第一上终板段11和第一下终板段12，第一上终板段11上设置有第一连接孔111，第一下终板段12上设置有第二连接孔121，第一上终板段11的顶面和第一下终板段12的底面之间形成第一夹角A1，第一夹角A1等于4n度，n为正整数或者负整数。第一螺钉21穿设于第一连接孔111，第二螺钉22穿设于第二连接孔121。第二椎体假体30包括上下连接的第二上终板段31和第二下终板段32，第二上终板段31上设置有第三连接孔311，第二下终板段32上设置有第四连接孔321，第二上终板段31的顶面和第二下终板段32的底面之间形成第二夹角A2，第二夹角A2等于0度。第三螺钉41穿设于第三连接孔311，第四螺钉42穿设于第四连接孔321。锁定结构设置在第一连接孔111和第一螺钉21之间、第二连接孔121和第二螺钉22之间、第三连接孔311和第三螺钉41之间以及第四连接孔321和第四螺钉42之间。As shown in Figures 1 to 14 and 23, the first embodiment of the artificial vertebral body prosthesis component of the present application includes: a first vertebral body prosthesis 10, a first screw 21, a second screw 22, a second vertebral body prosthesis. The body 30, the third screw 41, the fourth screw 42 and the locking structure. The first vertebral body prosthesis 10 includes a first upper endplate segment 11 and a first lower endplate segment 12 connected up and down. The first upper endplate segment 11 is provided with a first connection hole 111 , and the first lower endplate segment 12 A second connection hole 121 is provided on the top, and a first included angle A1 is formed between the top surface of the first upper end plate segment 11 and the bottom surface of the first lower end plate segment 12. The first included angle A1 is equal to 4n degrees, and n is positive. Integer or negative integer. The first screw 21 is inserted into the first connection hole 111 , and the second screw 22 is inserted into the second connection hole 121 . The second vertebral body prosthesis 30 includes a second upper endplate segment 31 and a second lower endplate segment 32 connected up and down. The second upper endplate segment 31 is provided with a third connection hole 311 , and the second lower endplate segment 32 A fourth connection hole 321 is provided on the upper end plate, and a second included angle A2 is formed between the top surface of the second upper end plate segment 31 and the bottom surface of the second lower end plate segment 32, and the second included angle A2 is equal to 0 degrees. The third screw 41 is inserted into the third connection hole 311 , and the fourth screw 42 is inserted into the fourth connection hole 321 . The locking structure is provided between the first connection hole 111 and the first screw 21, between the second connection hole 121 and the second screw 22, between the third connection hole 311 and the third screw 41, and between the fourth connection hole 321 and the third screw 41. between four screws 42.
需要说明的是，当第一夹角A1等于4n度为正数时，此时由第一夹角A1的开口朝向第一椎体假体10的前侧，包括正前侧或者斜前侧，当第一夹角A1等于4n度为负数时，第一夹角A1的开口朝向第一椎体假体10的后侧，包括正后侧或者斜后侧。第二上终板段31的顶面和第二下终板段32的底面均为倾斜面，两者之间保持平行，适用于更严重的颈椎退变，如后凸畸形。It should be noted that when the first included angle A1 is equal to 4n degrees and is a positive number, at this time, from the opening of the first included angle A1 toward the front side of the first vertebral body prosthesis 10, including the front side or the oblique front side, When the first included angle A1 is equal to 4n degrees and is a negative number, the opening of the first included angle A1 faces the back side of the first vertebral body prosthesis 10, including the positive back side or the oblique back side. The top surface of the second upper endplate segment 31 and the bottom surface of the second lower endplate segment 32 are both inclined surfaces, and they are kept parallel, which is suitable for more severe cervical spine degeneration, such as kyphosis.
应用实施例一的技术方案，可以选择第一椎体假体10植入至需要匹配的人体的相邻的节段椎体1间，使得第一上终板段11的顶面与第一椎体假体10上方的相邻的节段椎体1贴合，第一下终板段12的底面与第一椎体假体10下方的相邻的节段椎体1贴合。第一螺钉21穿设于第一连接孔111，第一螺钉21植入至上方的相邻的节段椎体1，以将第一上终板段11与上方的相邻的节段椎体1连接，第二螺钉22穿设于第二连接孔121，第二螺钉22植入至下方的相邻的节段椎体1，以将第一下终板段12与下方的相邻的节段椎体1连接。也可以选择第二椎体假体30植入至需要匹配的人体的相邻的节段椎体1间，使得第二上终板段31的顶面与第二椎体假体30上方的相邻的节段椎体1贴合，第二下终板段32的底面与第二椎体假体30下方的相邻的节段椎体1贴合。第三螺钉41穿设于第三连接孔311，第三螺钉41植入至上方的相邻的节段椎体1，以将第二上终板段31与上方的相邻的节段椎体1连接，第四螺钉42穿设于第四连接孔321，第四螺钉42植入至下方的相邻的节段椎体1，以将第二下终板段32与下方的相邻的节段椎体1连接。这样，可以选择第一椎体假体10和第二椎体假体30中的一个或者两个植入至人体的相邻的节段椎体1间，实现与相邻椎体的更好的匹配，人工椎体假体组件不存在修剪的操作，避免破坏相邻的节段椎体1，能够保证人工椎体假体组件植入的稳定性。并且由于锁定结构设置在第一连接孔111和第一螺钉21之间、第二连接孔121和第二螺钉22之间、第三连接孔311和第三螺钉41之间以及第四连接孔321和第四螺钉42之间，防止已经处于植入位置的第一螺钉21、第二螺钉22、第三螺钉41和第四螺钉42松动，有效保证人工椎体假体组件植入的稳定性，有效地降低了破坏术后颈椎的稳定性。因此实施例一的技术方案有效解决了相关技术中的修剪后的钛笼端面不能与相邻的节段椎体贴合，破坏术后颈椎的稳定性的问题。Applying the technical solution of Embodiment 1, the first vertebral body prosthesis 10 can be selected to be implanted between adjacent segmental vertebrae 1 of the human body that needs to be matched, so that the top surface of the first upper endplate segment 11 is in contact with the first vertebrae. The adjacent segmental vertebral bodies 1 above the body prosthesis 10 fit together, and the bottom surface of the first lower endplate segment 12 fits into the adjacent segmental vertebral bodies 1 below the first vertebral body prosthesis 10 . The first screw 21 is passed through the first connecting hole 111, and the first screw 21 is implanted into the upper adjacent segmental vertebral body 1 to connect the first superior endplate segment 11 to the upper adjacent segmental vertebral body. 1 connection, the second screw 22 is passed through the second connection hole 121, and the second screw 22 is implanted into the adjacent segmental vertebral body 1 below to connect the first lower endplate segment 12 with the adjacent segment below. Segment vertebra 1 is connected. You can also choose to implant the second vertebral body prosthesis 30 between adjacent segmental vertebral bodies 1 of the human body that needs to be matched, so that the top surface of the second upper endplate segment 31 is in contact with the top surface of the second vertebral body prosthesis 30. The adjacent segmental vertebral bodies 1 fit together, and the bottom surface of the second lower endplate segment 32 fits into the adjacent segmental vertebral bodies 1 below the second vertebral body prosthesis 30 . The third screw 41 is passed through the third connecting hole 311, and the third screw 41 is implanted into the upper adjacent segmental vertebral body 1 to connect the second superior endplate segment 31 to the upper adjacent segmental vertebral body. 1 connection, the fourth screw 42 is passed through the fourth connection hole 321, and the fourth screw 42 is implanted into the adjacent segmental vertebral body 1 below to connect the second lower endplate segment 32 with the adjacent segment below. Segment vertebra 1 is connected. In this way, one or both of the first vertebral body prosthesis 10 and the second vertebral body prosthesis 30 can be selected to be implanted between adjacent segmental vertebral bodies 1 of the human body to achieve better communication with the adjacent vertebral bodies. Matching, there is no trimming operation for the artificial vertebral body prosthesis component, which avoids damaging the adjacent segmental vertebral body 1, and can ensure the stability of the implantation of the artificial vertebral body prosthesis component. And because the locking structure is provided between the first connection hole 111 and the first screw 21 , between the second connection hole 121 and the second screw 22 , between the third connection hole 311 and the third screw 41 and the fourth connection hole 321 and the fourth screw 42 to prevent the first screw 21, the second screw 22, the third screw 41 and the fourth screw 42 that are already in the implantation position from loosening, effectively ensuring the stability of the implantation of the artificial vertebral prosthesis component. Effectively reduce damage to the stability of the cervical spine after surgery. Therefore, the technical solution of Embodiment 1 effectively solves the problem in the related art that the end surface of the titanium cage after trimming cannot fit with the adjacent segmental vertebral body, thereby destroying the stability of the cervical spine after surgery.
如图1至图14及图23所示，锁定结构包括锁定环51及与锁定环51配合的锥形螺纹52，第一连接孔111、第二连接孔121、第三连接孔311以及第四连接孔321的孔壁上均设置有锁定环51，第一螺钉21、第二螺钉22、第三螺钉41以及第四螺钉42的钉头上均设置有锥形螺纹52。在实施例一中，由于锁定结构在分别锁定第一连接孔111和第一螺钉21、第二连接孔121和第二螺钉22、第三连接孔311和第三螺钉41以及第四连接孔321和第四螺钉42时，原理是一样的，以锁定结构锁定第一连接孔111和第一螺钉21为例，在第一连接孔111内拧入第一螺钉21的过程中，锥形螺纹52的牙与锁定环51的内孔发生接触后能够相互配合，持续拧入后，锥形螺纹52的直径越来越大，与锁定环51的内孔发生过盈配合，对锁定环51进行挤压后甚至发生变形，从而实现锁定结构的锁定，进而将上方的相邻的节段椎体1与第一上终板段11的顶面实现加压的作用，下方的相邻的节段椎体1与第一下终板段12的底面实现加压的作用。As shown in FIGS. 1 to 14 and 23 , the locking structure includes a locking ring 51 and a tapered thread 52 mated with the locking ring 51 , a first connecting hole 111 , a second connecting hole 121 , a third connecting hole 311 and a fourth connecting hole 111 . Locking rings 51 are provided on the hole walls of the connecting holes 321 , and tapered threads 52 are provided on the heads of the first screw 21 , the second screw 22 , the third screw 41 and the fourth screw 42 . In the first embodiment, since the locking structure respectively locks the first connection hole 111 and the first screw 21 , the second connection hole 121 and the second screw 22 , the third connection hole 311 and the third screw 41 and the fourth connection hole 321 When using the fourth screw 42 , the principle is the same. Taking the locking structure to lock the first connection hole 111 and the first screw 21 as an example, during the process of screwing the first screw 21 into the first connection hole 111 , the tapered thread 52 The teeth of the thread 52 are able to cooperate with each other after contact with the inner hole of the locking ring 51. After continuous screwing, the diameter of the tapered thread 52 becomes larger and larger, and an interference fit occurs with the inner hole of the locking ring 51, squeezing the locking ring 51. It even deforms after being compressed, thereby realizing the locking of the locking structure, thereby pressurizing the upper adjacent segmental vertebral body 1 and the top surface of the first superior endplate segment 11, and the lower adjacent segmental vertebral body 1 The bottom surface of the body 1 and the first lower end plate section 12 achieves a pressurizing effect.
实施例一中的第一螺钉21、第二螺钉22、第三螺钉41以及第四螺钉42均和锥形螺纹52构成双线螺纹，第一螺钉21、第二螺钉22、第三螺钉41以及第四螺钉42自身的螺纹的螺距是锥形螺纹52的1.5倍，此螺距可实现锁定锁定环51。The first screw 21, the second screw 22, the third screw 41 and the fourth screw 42 in the first embodiment all form a double thread with the tapered thread 52. The first screw 21, the second screw 22, the third screw 41 and The thread pitch of the fourth screw 42 is 1.5 times that of the tapered thread 52 , and this pitch can lock the locking ring 51 .
如图1至图14及图23所示，锁定环51的内孔的孔壁包括交替连接的内凹弧段512和外凸弧段513，外凸弧段513所对应的角度在108度至120度之间，外凸弧段513的半径在1毫米至1.7毫米之间，外凸弧段513能够与锥形螺纹52锁定配合。在第一连接孔111内拧入第一螺钉21的过程中，锥形螺纹52的牙与外凸弧段513发生接触后能够相互配合，持续拧入后，锥形螺纹52的直径越来越大，与外凸弧段513发生过盈配合，两者的接触的面积越来越大，对外凸弧段513进行挤压后甚至发生变形，从而实现锁定结构的锁定。As shown in Figures 1 to 14 and 23, the hole wall of the inner hole of the locking ring 51 includes alternately connected inner concave arc sections 512 and outer convex arc sections 513. The corresponding angle of the outer convex arc sections 513 is between 108 degrees and Between 120 degrees, the radius of the convex arc segment 513 is between 1 mm and 1.7 mm, and the convex arc segment 513 can be locked and matched with the tapered thread 52 . During the process of screwing the first screw 21 into the first connecting hole 111, the teeth of the tapered thread 52 come into contact with the convex arc segment 513 and can cooperate with each other. After continuous screwing, the diameter of the tapered thread 52 becomes smaller and larger. Large, there is an interference fit with the outer convex arc segment 513, and the contact area between the two is getting larger and larger. The outer convex arc segment 513 is even deformed after being squeezed, thereby realizing the locking of the locking structure.
如图1至图14及图23所示，锁定环51在俯视图中整体成梅花状，其采用5瓣花瓣设计， 锁定环51的外圈至内孔方向逐渐变薄，在每个外凸弧段513形成0.2mm的厚度设计，实现与配套的螺钉的锁紧配合。同时锁定环51的顶面为第一凹球面511，可以实现第一螺钉21在±20度的范围内活动。并5瓣花瓣与锥形螺纹52容易实现锁定。As shown in Figures 1 to 14 and 23, the locking ring 51 is in the shape of a plum blossom in the top view. It adopts a five-petal design. The outer ring of the locking ring 51 gradually becomes thinner toward the inner hole, and each outer convex arc The section 513 is designed with a thickness of 0.2mm to achieve locking fit with the matching screws. At the same time, the top surface of the locking ring 51 is a first concave spherical surface 511, which allows the first screw 21 to move within a range of ±20 degrees. The 5-petal petals and the tapered thread 52 are easy to lock.
为了当需要增大第一螺钉21的尺寸和力度时，需要减小外凸弧段513所对应的角度，且增大外凸弧段513的半径；当需要减小第一螺钉21的尺寸和力度时，需要增大外凸弧段513所对应的角度，且减小外凸弧段513的半径，这样设置上述角度在108度至120度之间，且半径在1毫米至1.7毫米之间的外凸弧段513不仅能够满足第一螺钉21的设计尺寸，还能够满足第一螺钉21拧入时的力度要求，进而有效地保证了锁定结构的锁定效果。优选地，外凸弧段513所对应的角度为108或者110度或者114度或者120度，外凸弧段513的半径为1毫米或者1.3毫米或者1.5毫米或者1.7毫米。In order to increase the size and strength of the first screw 21 , it is necessary to reduce the angle corresponding to the convex arc section 513 and increase the radius of the convex arc section 513 ; when it is necessary to reduce the size and strength of the first screw 21 When using force, it is necessary to increase the angle corresponding to the convex arc segment 513 and reduce the radius of the convex arc segment 513, so that the above-mentioned angle is set between 108 degrees and 120 degrees, and the radius is between 1 mm and 1.7 mm. The outer convex arc section 513 can not only meet the design size of the first screw 21, but also meet the strength requirements when the first screw 21 is screwed in, thereby effectively ensuring the locking effect of the locking structure. Preferably, the angle corresponding to the outer convex arc segment 513 is 108 or 110 degrees or 114 degrees or 120 degrees, and the radius of the outer convex arc segment 513 is 1 mm or 1.3 mm or 1.5 mm or 1.7 mm.
如图1至图14及图23所示，为了便于加工，第一上终板段11和第一下终板段12为一体结构。这样，在出厂时，第一椎体假体10的上述的第一夹角A1设计成4度或者8度，第一上终板段11和第一下终板段12上下对称，适用于恢复颈椎前凸。As shown in Figures 1 to 14 and 23, in order to facilitate processing, the first upper end plate section 11 and the first lower end plate section 12 have an integrated structure. In this way, when leaving the factory, the above-mentioned first included angle A1 of the first vertebral body prosthesis 10 is designed to be 4 degrees or 8 degrees, and the first upper endplate segment 11 and the first lower endplate segment 12 are symmetrical up and down, which is suitable for recovery. Cervical lordosis.
如图1至图14及图23所示，第一连接孔111和第二连接孔121均为间隔设置的两个，两个第一连接孔111的轴线之间形成第三夹角A3，两个第二连接孔121的轴线之间形成第四夹角A4，第三夹角A3和第四夹角A4均在第一椎体假体10的前侧面上的投影的角度在13度至17度之间，第三夹角A3和第四夹角A4均在第一椎体假体10的横截面上的投影的角度在8度至12度之间，第一连接孔111的轴线和第二连接孔121的轴线之间形成第五夹角A5，第五夹角A5在第一椎体假体10的前后方向的纵截面上的投影的角度在88度至92度之间；第三连接孔311和第四连接孔321均为间隔设置的两个，两个第三连接孔311的轴线之间形成第六夹角A6，两个第四连接孔321的轴线之间形成第七夹角A7，第六夹角A6和第七夹角A7均在第二椎体假体30的前侧面上的投影的角度在16度至20度之间，第六夹角A6和第七夹角A7均在第二椎体假体30的横截面上的投影的角度在18度至22度之间，第三连接孔311的轴线和第四连接孔321的轴线之间形成第八夹角A8，第八夹角A8在第二椎体假体30的前后方向的纵截面上的投影的角度在78度至82度之间。As shown in Figures 1 to 14 and 23, the first connection holes 111 and the second connection holes 121 are two spaced apart, and a third included angle A3 is formed between the axes of the two first connection holes 111. A fourth included angle A4 is formed between the axes of the second connecting holes 121 . The projection angles of the third included angle A3 and the fourth included angle A4 on the front side of the first vertebral body prosthesis 10 are between 13 degrees and 17 degrees. degrees, the projection angles of the third included angle A3 and the fourth included angle A4 on the cross section of the first vertebral body prosthesis 10 are between 8 degrees and 12 degrees, and the axis of the first connecting hole 111 and the third included angle A3 are between 8 degrees and 12 degrees. A fifth included angle A5 is formed between the axes of the two connecting holes 121, and the projection angle of the fifth included angle A5 on the longitudinal section in the front-to-back direction of the first vertebral body prosthesis 10 is between 88 degrees and 92 degrees; The connecting holes 311 and the fourth connecting holes 321 are two spaced apart, the axes of the two third connecting holes 311 form a sixth included angle A6, and the axes of the two fourth connecting holes 321 form a seventh included angle A6. The angle A7, the sixth included angle A6 and the seventh included angle A7 all project on the front side of the second vertebral body prosthesis 30 are between 16 degrees and 20 degrees. The sixth included angle A6 and the seventh included angle A7 are between 16 degrees and 20 degrees. The projection angles of A7 on the cross-section of the second vertebral body prosthesis 30 are between 18 degrees and 22 degrees, and an eighth included angle A8 is formed between the axis of the third connection hole 311 and the axis of the fourth connection hole 321 , the angle of projection of the eighth included angle A8 on the longitudinal section in the front-to-back direction of the second vertebral body prosthesis 30 is between 78 degrees and 82 degrees.
上述的多种角度相互配合使得人工椎体假体组件的实施例一能够解决至少以下问题：The above-mentioned multiple angles cooperate with each other so that the first embodiment of the artificial vertebral body prosthesis assembly can solve at least the following problems:
第一、不同的向内收或者向外展的角度可更好的适应不同人体的颈椎数据，根据患者骨质的情况选择向内收或者向外展的角度；第二、当术中翻修或者钉孔位置不合理时，可避免钉道的重复占用；第三、在遇见相邻的节段椎体1已手术且有螺钉占位时，可考虑根据螺钉占位情况进行选择合适内收或外展的螺钉；第四、能够实现多节段使用时不会产生钉道的干扰问题。First, different inward or outward angles can better adapt to the cervical spine data of different human bodies, and the inward or outward angles can be selected according to the patient's bone quality; second, when the intraoperative revision or When the location of the screw holes is unreasonable, it can avoid repeated occupation of the screw track; thirdly, when the adjacent segment vertebral body 1 has been operated and there are screws occupying the space, you can consider choosing the appropriate adduction or retraction according to the screws occupying the space. Abducted screws; fourth, it can be used in multiple segments without causing interference problems with the nail path.
人工椎体假体组件的前后方均采用抛光设计，从而更好的减少对前后方软组织的刺激，减少并发症。而第一上终板段11和第一下终板段12之间的内部采用骨小梁结构形态，便于骨细胞长入的微孔结构，该微孔结构是一种相互连通的多向微孔隙结构，孔隙直径为800μm，该孔隙有利于骨细胞爬行长入，术后人工椎体假体组件的结合面将与生理节段椎体1发生骨融合，提升融合率。The front and rear of the artificial vertebral body prosthesis components are polished to better reduce stimulation to the front and rear soft tissues and reduce complications. The interior between the first upper endplate segment 11 and the first lower endplate segment 12 adopts a trabecular bone structure, which is a microporous structure that facilitates the growth of bone cells. The microporous structure is a multi-directional microporous structure that is interconnected. The pore structure has a pore diameter of 800 μm. This pore is conducive to the crawling and ingrowth of bone cells. After surgery, the joint surface of the artificial vertebral body prosthesis component will undergo bone fusion with the physiological segment vertebral body 1, improving the fusion rate.
如图1至图14及图23所示，第一上终板段11的顶面设置有向上延伸的第一限位凸板112，第一限位凸板112位于第一上终板段11的前侧边沿处，第一下终板段12的底面设置有向下延伸的第二限位凸板122，第二限位凸板122位于第一下终板段12的前侧边沿处。第二上终板段31的顶面设置有向上延伸的第三限位凸板312，第三限位凸板312位于第二上终板段31的前侧边沿处，第二下终板段32的底面设置有向下延伸的第四限位凸板322，第四限位凸板322位于第二下终板段32的前侧边沿处。上述的第一限位凸板112和第二限位凸板122可与节段椎体1的前缘实现接触定位，既能实现更好的第一椎体假体10位置定位，又能限制第一椎体假体10的向后移位。同样地，第三限位凸板312和第四限位凸板322能够起到同样的功能。As shown in Figures 1 to 14 and 23, the top surface of the first upper end plate section 11 is provided with a first limiting protrusion 112 extending upward, and the first limiting protrusion 112 is located on the first upper end plate section 11 At the front edge of the first lower end plate section 12, a second limiting protrusion 122 extending downward is provided on the bottom surface of the first lower end plate section 12. The second limiting protrusion 122 is located at the front edge of the first lower end plate section 12. The top surface of the second upper end plate section 31 is provided with an upwardly extending third limiting convex plate 312. The third limiting convex plate 312 is located at the front edge of the second upper end plate section 31. The second lower end plate section The bottom surface of 32 is provided with a downwardly extending fourth limiting protruding plate 322 , and the fourth limiting protruding plate 322 is located at the front edge of the second lower end plate section 32 . The above-mentioned first limiting convex plate 112 and the second limiting convex plate 122 can achieve contact positioning with the front edge of the segmental vertebral body 1, which can not only achieve better positioning of the first vertebral body prosthesis 10, but also limit the position of the first vertebral body prosthesis 10. Posterior displacement of the first vertebral body prosthesis 10 . Similarly, the third limiting protruding plate 312 and the fourth limiting protruding plate 322 can perform the same function.
如图1至图14及图23所示，第一上终板段11和第一下终板段12的连接处设置有相背设置的两个夹持槽155，第二上终板段31和第二下终板段32的连接处设置有夹持孔345。这样，可以通过植入工具选择与两个夹持槽155或者夹持孔345配合，以实现第一椎体假体10或者第二椎体假体30的植入。As shown in Figures 1 to 14 and 23, the connection between the first upper end plate section 11 and the first lower end plate section 12 is provided with two oppositely arranged clamping grooves 155. The second upper end plate section 31 A clamping hole 345 is provided at the connection point with the second lower end plate section 32 . In this way, the implantation tool can be selected to cooperate with the two clamping grooves 155 or the clamping holes 345 to implement the implantation of the first vertebral body prosthesis 10 or the second vertebral body prosthesis 30 .
应用人工椎体假体组件的实施例一中的第一椎体假体10和第二椎体假体30分别与相邻的节段椎体1接触的结合面采用骨小梁结构，增加初期固定的稳定性，远期骨长入后达到长期固定；第一椎体假体10和第二椎体假体30的内部也均采用骨小梁结构，外部采用实体光面设计，既能形成轴向的稳定性，又能提供轴向的压缩刚度，防止发生节段椎体1塌陷。第一椎体假体10和第二椎体假体30的横断面完全采用与颈椎椎体解剖形态类似的结构设计。第一椎体假体10和第二椎体假体30的外形采用收腰的结构设计，既能实现第一上终板段11、第一下终板段12及第二上终板段31、第二下终板段32能够有更大的接触，又能实现节段椎体1部位在次全切除后更便于第一椎体假体10和第二椎体假体30的植入。In the first embodiment using an artificial vertebral body prosthesis component, the joint surfaces of the first vertebral body prosthesis 10 and the second vertebral body prosthesis 30 respectively contact the adjacent segmental vertebral body 1 adopt a trabecular bone structure, which increases the initial The stability of the fixation can achieve long-term fixation after long-term bone ingrowth; the interior of the first vertebral body prosthesis 10 and the second vertebral body prosthesis 30 also adopt a bone trabecular structure, and the exterior adopts a solid smooth surface design, which can form The axial stability can also provide axial compression stiffness to prevent segmental vertebral body 1 from collapsing. The cross-sections of the first vertebral body prosthesis 10 and the second vertebral body prosthesis 30 adopt a structural design similar to the anatomical shape of the cervical vertebrae. The outer shapes of the first vertebral body prosthesis 10 and the second vertebral body prosthesis 30 adopt a waist-shrinking structural design, which can realize the first upper endplate segment 11 , the first lower endplate segment 12 and the second upper endplate segment 31 , the second lower endplate segment 32 can have greater contact, and can achieve more convenient implantation of the first vertebral body prosthesis 10 and the second vertebral body prosthesis 30 after subtotal resection of the segmental vertebral body 1 part.
在本申请的人工椎体假体组件的实施例二中，如图15至图17及图23所示，与人工椎体假体组件的实施例一的区别在于，为了便于植入，第一上终板段11和第一下终板段12为分体结构。在实施例二中，当第一上终板段11和第一下终板段12为分体结构时，第一上终板段11和第一下终板段12之间设置有相互接触的凹弧面131和第一凸弧面132。这样，在人工椎体假体组件植入至相邻的节段椎体1间时，为了更好的匹配不同节段椎体1的贴合面，凹弧面131和第一凸弧面132之间能够相对的滑动，便于第一上终板段11相对于第一下终板段12在前后方向上进行摆动，以便于调节上述的第一夹角A1为±4度或者±8度或者±12度，以便适用于恢复颈椎前凸（如轻微的颈椎曲度退变）或者后凸。上述凹弧面131的半径优选为20mm。In the second embodiment of the artificial vertebral body prosthesis component of the present application, as shown in Figures 15 to 17 and 23, the difference from the first embodiment of the artificial vertebral body prosthesis component is that in order to facilitate implantation, the first The upper end plate section 11 and the first lower end plate section 12 are separate structures. In the second embodiment, when the first upper end plate segment 11 and the first lower end plate segment 12 have a split structure, a contact between the first upper end plate segment 11 and the first lower end plate segment 12 is provided. The concave arc surface 131 and the first convex arc surface 132 . In this way, when the artificial vertebral body prosthesis component is implanted between adjacent segmental vertebral bodies 1, in order to better match the fitting surfaces of different segmental vertebral bodies 1, the concave arc surface 131 and the first convex arc surface 132 can slide relative to each other, so that the first upper end plate section 11 can swing in the front and rear direction relative to the first lower end plate section 12, so as to adjust the above-mentioned first included angle A1 to ±4 degrees or ±8 degrees or ±12 degrees, so it is suitable for restoring cervical lordosis (such as slight cervical curvature degeneration) or kyphosis. The radius of the concave arc surface 131 is preferably 20 mm.
在实施例二中，为了便于第一上终板段11相对于第一下终板段12在前后方向上进行摆动，第一上终板段11和第一下终板段12通过连接结构23连接成分体结构，连接结构23包括滑动连接件。In the second embodiment, in order to facilitate the first upper end plate segment 11 to swing in the front-rear direction relative to the first lower end plate segment 12, the first upper end plate segment 11 and the first lower end plate segment 12 are connected through the connecting structure 23 To connect the component structures, the connection structure 23 includes sliding connections.
如图15至图17及图23所示，连接结构23包括滑动连接件时，滑动连接件包括T形滑槽231及与T形滑槽231配合的T形滑块232，T形滑槽231及T形滑块232均为沿前后方向延伸的弧形状。这样，T形滑块232在T形滑槽231内滑动时，便于第一上终板段11相对于第一下终板段12在前后方向上进行摆动，以便于第一夹角A1调节至前后方向上的4度或者﹣4度或者8度或者﹣8度或者12度或者﹣12度。As shown in Figures 15 to 17 and 23, when the connection structure 23 includes a sliding connector, the sliding connector includes a T-shaped slide groove 231 and a T-shaped slide block 232 that cooperates with the T-shaped slide groove 231. The T-shaped slide groove 231 and the T-shaped slider 232 are both arc-shaped extending in the front-rear direction. In this way, when the T-shaped slider 232 slides in the T-shaped slide groove 231, it is convenient for the first upper end plate section 11 to swing in the front and rear direction relative to the first lower end plate section 12, so that the first included angle A1 can be adjusted to 4 degrees or -4 degrees or 8 degrees or -8 degrees or 12 degrees or -12 degrees in the front-to-back direction.
如图15至图17及图23所示，T形滑槽231的前端为入口端，T形滑槽231的后端为封闭端，入口端位于第一椎体假体10的前侧，封闭端与第一椎体假体10的后侧具有预设距离。这样，T形滑块232能够由入口端插入至T形滑槽231内，且由于封闭端的设置，防止T形滑块232从第一椎体假体10的后侧滑出T形滑槽231。第一椎体假体10内设置有沿上下方向延伸的第一植骨孔14。这样通过向第一植骨孔14内填充植骨材料，有利于骨细胞爬行长入，术后第一椎体假体10的结合面将与生理骨的节段椎体1发生骨融合，提升融合率。As shown in Figures 15 to 17 and 23, the front end of the T-shaped chute 231 is the inlet end, and the rear end of the T-shaped chute 231 is the closed end. The inlet end is located on the front side of the first vertebral body prosthesis 10 and is closed. The end has a preset distance from the rear side of the first vertebral body prosthesis 10 . In this way, the T-shaped slider 232 can be inserted into the T-shaped slide groove 231 from the inlet end, and due to the arrangement of the closed end, the T-shaped slider 232 is prevented from sliding out of the T-shaped slide groove 231 from the rear side of the first vertebral body prosthesis 10 . A first bone grafting hole 14 extending in the up-and-down direction is provided in the first vertebral body prosthesis 10 . In this way, by filling the first bone graft hole 14 with bone graft material, it is conducive to the crawling and ingrowth of bone cells. After surgery, the joint surface of the first vertebral body prosthesis 10 will undergo bone fusion with the physiological bone segmental vertebral body 1, improving the fusion rate.
如图15至图17及图23所示，滑动连接件还包括穿设在第一植骨孔14内的锁紧件（未示出），锁紧件具有与T形滑块232抵顶配合以使T形滑块232固定在T形滑槽231内的第一锁紧位置，以及避让T形滑块232以使T形滑块232在T形滑槽231内前后滑动的第一调节位置。当锁紧件处于第一锁紧位置时，T形滑块232锁紧在T形滑槽231内，T形滑块232无法在T形滑槽231内滑动，保证第一夹角A1能够稳定地保持在4度或者﹣4度或者8度或者﹣8度或者12度或者﹣12度。锁紧件优选为螺栓431。当锁紧件处于第一锁紧位置时，再向第一植骨孔14内填充植骨材料。在第一植骨孔14安装锁紧件兼顾减少占用第一椎体假体10的内部空间、保证支撑第一椎体假体10的轴向稳定性，又能提供轴向的压缩刚度，防止发生节段椎体1塌陷。As shown in FIGS. 15 to 17 and 23 , the sliding connection member also includes a locking member (not shown) that is inserted into the first bone grafting hole 14 . The locking member has a function of engaging with the T-shaped slide block 232 So that the T-shaped slider 232 is fixed in the first locking position in the T-shaped slide groove 231, and the first adjustment position is to avoid the T-shaped slider 232 so that the T-shaped slider 232 slides back and forth in the T-shaped slide groove 231. . When the locking member is in the first locking position, the T-shaped slide block 232 is locked in the T-shaped slide groove 231, and the T-shaped slide block 232 cannot slide in the T-shaped slide groove 231, ensuring that the first included angle A1 can be stable. Keep the ground at 4 degrees or -4 degrees or 8 degrees or -8 degrees or 12 degrees or -12 degrees. The locking member is preferably a bolt 431. When the locking member is in the first locking position, the first bone grafting hole 14 is filled with bone grafting material. Installing the locking piece in the first bone grafting hole 14 not only reduces the occupation of the internal space of the first vertebral body prosthesis 10, but also ensures the axial stability of supporting the first vertebral body prosthesis 10, and can provide axial compression stiffness to prevent Collapse of segmental vertebral body 1 occurs.
在图中未示出的实施例中，连接结构包括螺纹连接件时，螺纹连接件包括螺栓及与螺栓连接的螺母，当第一上终板段和第一下终板段之间设置有凹弧面和第一凸弧面时，螺母朝向凹弧面的一端设置有第二凸弧面。第二凸弧面的设置便于凹弧面和第一凸弧面之间能够相对的滑动，便于第一上终板段相对于第一下终板段在前后方向上进行摆动。In an embodiment not shown in the figure, when the connection structure includes a threaded connector, the threaded connector includes a bolt and a nut connected to the bolt. When a recess is provided between the first upper end plate segment and the first lower end plate segment. When the nut has a curved surface and a first convex curved surface, a second convex curved surface is provided at one end of the nut facing the concave curved surface. The arrangement of the second convex arc surface facilitates relative sliding between the concave arc surface and the first convex arc surface, and facilitates the first upper end plate segment to swing in the front and rear direction relative to the first lower end plate segment.
在本申请的人工椎体假体组件的实施例三中，如图18至图22及图23所示，与人工椎体假体组件的实施例二的区别在于，第一上终板段11和第一下终板段12之间设置有相互接触的第二凹球面331和第一凸球面332。这样，在人工椎体假体组件植入至相邻的节段椎体1间时，为了更好的匹配不同节段椎体1的贴合面，第二凹球面331和第一凸球面332之间能够相对的滑动，便于第一上终板段11相对于第一下终板段12在圆周方向上进行摆动，以便于调节上述的第一夹角A1为±4度或者±8度或者±12度，以便适用于恢复颈椎在圆周方向上的各个凸（如前凸或者后凸或者左凸或者右凸或者斜向凸）。上述第二凹球面331的半径优选为25mm。In the third embodiment of the artificial vertebral body prosthesis component of the present application, as shown in Figures 18 to 22 and 23, the difference from the second embodiment of the artificial vertebral body prosthesis component is that the first upper endplate segment 11 There are a second concave spherical surface 331 and a first convex spherical surface 332 in contact with each other between the first lower end plate section 12 and the first lower end plate section 12 . In this way, when the artificial vertebral body prosthesis component is implanted between adjacent segmental vertebral bodies 1, in order to better match the fitting surfaces of different segmental vertebral bodies 1, the second concave spherical surface 331 and the first convex spherical surface 332 can slide relative to each other, so that the first upper end plate segment 11 can swing in the circumferential direction relative to the first lower end plate segment 12, so as to adjust the above-mentioned first included angle A1 to ±4 degrees or ±8 degrees or ±12 degrees, so that it is suitable for restoring various convexities of the cervical spine in the circumferential direction (such as lordosis or kyphosis, left convexity, right convexity or oblique convexity). The radius of the second concave spherical surface 331 is preferably 25 mm.
在实施例三中，为了便于第一上终板段11相对于第一下终板段12在周向方向上进行摆动，第一上终板段11和第一下终板段12通过连接结构23连接成分体结构，连接结构23包括螺纹连接件。In the third embodiment, in order to facilitate the first upper end plate segment 11 to swing in the circumferential direction relative to the first lower end plate segment 12, the first upper end plate segment 11 and the first lower end plate segment 12 are connected through a connecting structure. 23 is connected to the component structure, and the connection structure 23 includes threaded connectors.
在图中未示出的实施例中，滑动连接件包括滑腔及位于滑腔内的滑杆，滑腔包括球形凹腔及与球形凹腔连通的柱形孔，滑杆包括位于球形凹腔内的球头及位于柱形孔内的柱形杆。这样，球头在球形凹腔内滑动时，便于第一上终板段相对于第一下终板段在圆周方向上进行摆动，以便于第一夹角调节至任意方向上的4度或者﹣4度或者8度或者﹣8度或者12度或者﹣12度。In an embodiment not shown in the figure, the sliding connection member includes a sliding cavity and a sliding rod located in the sliding cavity. The sliding cavity includes a spherical cavity and a cylindrical hole connected to the spherical cavity. The sliding rod includes a sliding rod located in the spherical cavity. The ball head inside and the cylindrical rod located in the cylindrical hole. In this way, when the ball head slides in the spherical cavity, the first upper end plate segment can swing in the circumferential direction relative to the first lower end plate segment, so that the first included angle can be adjusted to 4 degrees or - in any direction. 4 degrees or 8 degrees or -8 degrees or 12 degrees or -12 degrees.
如图18至图22及图23所示，当第一上终板段11和第一下终板段12之间设置有第二凹球面331和第一凸球面332时，螺母432朝向第二凹球面331的一端设置有第二凸球面333。第二凸球面333的设置便于第二凹球面331和第一凸球面332之间能够相对的滑动，便于第一上终板段11相对于第一下终板段12在圆周方向上进行摆动。As shown in Figures 18 to 22 and 23, when the second concave spherical surface 331 and the first convex spherical surface 332 are provided between the first upper end plate section 11 and the first lower end plate section 12, the nut 432 faces the second A second convex spherical surface 333 is provided at one end of the concave spherical surface 331 . The arrangement of the second convex spherical surface 333 facilitates the relative sliding between the second concave spherical surface 331 and the first convex spherical surface 332 and facilitates the first upper end plate section 11 to swing in the circumferential direction relative to the first lower end plate section 12 .
如图18至图22及图23所示，第一上终板段11内设置有沿上下方向延伸并贯通第一上终板段11的顶面和底面的第二植骨孔35，第一下终板段12内设置有沿上下方向延伸并贯通第一下终板段12的顶面和底面的第三植骨孔36。这样通过向第二植骨孔35及第三植骨孔36内填充植骨材料，有利于骨细胞爬行长入，术后第一椎体假体10的结合面将与生理骨的节段椎体1发生骨融合，提升融合率。As shown in FIGS. 18 to 22 and 23 , the first upper endplate section 11 is provided with a second bone grafting hole 35 extending in the up-down direction and penetrating the top and bottom surfaces of the first upper endplate section 11 . The lower endplate segment 12 is provided with a third bone grafting hole 36 extending in the up-down direction and penetrating the top surface and the bottom surface of the first lower endplate segment 12 . In this way, by filling the second bone grafting hole 35 and the third bone grafting hole 36 with bone grafting material, it is conducive to the crawling and ingrowth of bone cells. After surgery, the joint surface of the first vertebral body prosthesis 10 will be connected with the segmental vertebrae of the physiological bone. Bone fusion occurs in body 1, increasing the fusion rate.
如图18至图22及图23所示，第二植骨孔35包括第一孔段351及与第一孔段351连接的第二孔段352，第一孔段351的直径大于第二孔段352的直径，第一孔段351和第二孔段352之间设置有第三凹球面353，第三植骨孔36包括与第二孔段352连通的第三孔段361及与第三孔段361连接的第四孔段362，第三孔段361和第四孔段362之间设置有第四凹球面363，第四孔段362的直径大于第三孔段361的直径，第三孔段361的直径大于第二孔段352的直径，螺栓431依次穿过于第一孔段351、第二孔段352、第三孔段361以及第四孔段362，螺母432在第四孔段362内与螺栓431连接。第二孔段352内设置有与螺栓431连接的内螺纹，以将螺栓431连接在第一上终板段11内，并与螺母432连接，第三凹球面353和第三孔段361能够避让螺栓431，第四孔段362避让螺母432，防止第一上终板段11带动螺栓431相对于第一下终板进行圆周方向摆动时，螺栓431与第二植骨孔35的孔壁发生干涉，螺母432与第三植骨孔36发生干涉。As shown in Figures 18 to 22 and 23, the second bone grafting hole 35 includes a first hole section 351 and a second hole section 352 connected to the first hole section 351. The diameter of the first hole section 351 is larger than the second hole. The diameter of the section 352, a third concave spherical surface 353 is provided between the first hole section 351 and the second hole section 352, the third bone grafting hole 36 includes a third hole section 361 connected with the second hole section 352 and a third hole section 352 connected with the third hole section 352. A fourth hole section 362 connected to the hole section 361 is provided with a fourth concave spherical surface 363 between the third hole section 361 and the fourth hole section 362. The diameter of the fourth hole section 362 is larger than the diameter of the third hole section 361. The diameter of the hole section 361 is larger than the diameter of the second hole section 352. The bolt 431 passes through the first hole section 351, the second hole section 352, the third hole section 361 and the fourth hole section 362 in sequence. The nut 432 is in the fourth hole section. 362 is connected with bolt 431. The second hole section 352 is provided with an internal thread connected to the bolt 431 to connect the bolt 431 in the first upper end plate section 11 and to the nut 432. The third concave spherical surface 353 and the third hole section 361 can avoid The bolt 431 and the fourth hole section 362 avoid the nut 432 to prevent the bolt 431 from interfering with the hole wall of the second bone grafting hole 35 when the first upper end plate section 11 drives the bolt 431 to swing in the circumferential direction relative to the first lower end plate. , the nut 432 interferes with the third bone grafting hole 36 .
如图18至图22及图23所示，螺栓431具有与螺母432旋紧配合以使第二凸球面333与第四凹球面363抵接配合的第二锁紧位置，此时，第二凸球面333与第四凹球面363的接触面均为骨小梁结构的微网纹结构，抵接后产生较大的摩擦力，螺母432锁紧在第四孔段362内，螺母432无法在第四孔段362内滑动，保证第一夹角A1能够稳定地保持在4度或者﹣4度或者8度或者﹣8度或者12度或者﹣12度。以及与螺母432旋松配合以使第二凸球面333相对于第四凹球面363周向摆动的第二调节位置。以便于第一夹角A1调节至任意方向上的4度或者﹣4度或者8度或者﹣8度或者12度或者﹣12度。As shown in FIGS. 18 to 22 and 23 , the bolt 431 has a second locking position that is screwed together with the nut 432 so that the second convex spherical surface 333 and the fourth concave spherical surface 363 abut and cooperate. At this time, the second convex spherical surface 333 abuts against the fourth concave spherical surface 363 . The contact surface between the spherical surface 333 and the fourth concave spherical surface 363 is a micro-reticulated structure of trabecular bone structure. After contact, a large friction force is generated. The nut 432 is locked in the fourth hole section 362, and the nut 432 cannot move in the fourth hole section 362. The four-hole section 362 slides inside to ensure that the first included angle A1 can be stably maintained at 4 degrees or -4 degrees or 8 degrees or -8 degrees or 12 degrees or -12 degrees. and a second adjustment position in which the nut 432 is loosened to allow the second convex spherical surface 333 to swing circumferentially relative to the fourth concave spherical surface 363 . So that the first included angle A1 can be adjusted to 4 degrees or -4 degrees or 8 degrees or -8 degrees or 12 degrees or -12 degrees in any direction.
上述结构中的第二植骨孔35和第三植骨孔36内安装螺栓431与螺母432旋紧配合，兼顾减少占用第一椎体假体10的内部空间、保证支撑第一椎体假体10的轴向稳定性，又能提供轴向的压缩刚度，防止发生节段椎体1塌陷。The second bone grafting hole 35 and the third bone grafting hole 36 in the above structure are installed with bolts 431 and nuts 432 that are tightly matched to reduce the occupation of the internal space of the first vertebral body prosthesis 10 and ensure the support of the first vertebral body prosthesis. The axial stability of 10 can also provide axial compression stiffness to prevent segmental vertebral body 1 from collapsing.
在本发明的描述中，需要理解的是，方位词如“前、后、上、下、左、右”、“横向、竖向、垂直、水平”和“顶、底”等所指示的方位或位置关系通常是基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，在未作相反说明的情况下，这些方位词并不指示和暗示所指的装置或元件必须具有特定的方位或者以特定的方位构造和操作，因此不能理解为对本发明保护范围的限制；方位词“内、外”是指相对于各部件本身的轮廓的内外。In the description of the present invention, it should be understood that the orientation indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description. Without explanation to the contrary, these directional words do not indicate and imply the referred devices or components. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the scope of the present invention; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.
为了便于描述，在这里可以使用空间相对术语，如“在……之上”、“在……上方”、“在……上表面”、“上面的”等，用来描述如在图中所示的一个器件或特征与其他器件或特征的空间位置关系。应当理解的是，空间相对术语旨在包含除了器件在图中所描述的方位之外的在使用或操作中的不同方位。例如，如果附图中的器件被倒置，则描述为“在其他器件或构造上方”或“在其他器件或构造之上”的器件之后将被定位为“在其他器件或构造下方”或“在其他器件或构造之下”。因而，示例性术语“在……上方”可以包括“在……上方”和“在……下方”两种方位。该器件也可以其他不同方式定位(旋转90度或处于其他方位)，并且对这里所使用的空间相对描述作出相应解释。For the convenience of description, spatially relative terms can be used here, such as "on...", "on...", "on the upper surface of...", "above", etc., to describe what is shown in the figure. The spatial relationship between one device or feature and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a feature in the figure is turned upside down, then one feature described as "above" or "on top of" other features or features would then be oriented "below" or "below" the other features or features. under other devices or structures". Thus, the exemplary term "over" may include both orientations "above" and "below." The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
此外，需要说明的是，使用“第一”、“第二”等词语来限定零部件，仅仅是为了便于对相应零部件进行区别，如没有另行声明，上述词语并没有特殊含义，因此不能理解为对本发明保护范围的限制。In addition, it should be noted that the use of words such as "first" and "second" to define parts is only to facilitate the distinction between corresponding parts. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood. To limit the scope of protection of the present invention.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311297750.5ACN117017590B (en) | 2023-10-09 | 2023-10-09 | Artificial vertebral prosthesis assembly |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311297750.5ACN117017590B (en) | 2023-10-09 | 2023-10-09 | Artificial vertebral prosthesis assembly |
| Publication Number | Publication Date |
|---|---|
| CN117017590A CN117017590A (en) | 2023-11-10 |
| CN117017590Btrue CN117017590B (en) | 2024-01-23 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311297750.5AActiveCN117017590B (en) | 2023-10-09 | 2023-10-09 | Artificial vertebral prosthesis assembly |
| Country | Link |
|---|---|
| CN (1) | CN117017590B (en) |
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| CN202776642U (en)* | 2012-08-31 | 2013-03-13 | 上海交通大学附属第一人民医院 | Angle-adjustable cervical intervertebral fusion device |
| WO2018200530A1 (en)* | 2017-04-25 | 2018-11-01 | Life Spine, Inc. | Expandable spinal interbody assembly |
| WO2018200507A1 (en)* | 2017-04-25 | 2018-11-01 | Life Spine, Inc. | Expandable spinal interbody assembly |
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| CN114041906A (en)* | 2021-11-22 | 2022-02-15 | 北京理贝尔生物工程研究所有限公司 | Vertebral prosthesis |
| CN216495884U (en)* | 2021-11-22 | 2022-05-13 | 北京理贝尔生物工程研究所有限公司 | Vertebral body prosthesis |
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| CN117017590A (en) | 2023-11-10 |
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