CN203749649U - Inflatable interbody fusion cage - Google Patents

Inflatable interbody fusion cage Download PDF

Info

Publication number
CN203749649U
CN203749649U CN201420074686.4U CN201420074686U CN203749649U CN 203749649 U CN203749649 U CN 203749649U CN 201420074686 U CN201420074686 U CN 201420074686U CN 203749649 U CN203749649 U CN 203749649U
Authority
CN
China
Prior art keywords
body
inflation
expandable
head
adjusting
Prior art date
Application number
CN201420074686.4U
Other languages
Chinese (zh)
Inventor
穆尚强
梅继文
孙爽
王宏伟
王宇
黄锐
胡守力
高峰
李坤
Original Assignee
吉林医药学院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 吉林医药学院 filed Critical 吉林医药学院
Priority to CN201420074686.4U priority Critical patent/CN203749649U/en
Application granted granted Critical
Publication of CN203749649U publication Critical patent/CN203749649U/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

Abstract

The utility model provides an inflatable interbody fusion cage, which comprises a fusion cage body with a similar cuboid shape, an inflation lock disposed inside the fusion cage body and an adjustment pull rod and a lock cap which are connected to the inflation lock in a threaded manner, wherein the fusion cage body is constituted of an adjustment end and an inflation part, the inflation part is constituted of an upper inflation body and a lower inflation body which are opened, an implantation end is disposed on the opened end of the inflation part, the upper surface of the upper inflation body and the lower surface of the lower inflation body are respectively equipped with a bearing face which is equipped with anti-skid teeth and coincides with the curvature of a body end plate, bone grafting holes which are corresponding up and down are respectively formed in the centers of the upper inflation bodies and the lower inflation bodies, two sides of the inflation part, which are perpendicular to the beating face, respectively form an arc adjustment groove, and the inner diameter of the arc adjustment groove is reduced in a stepped manner from the implantation end to the adjustment end. According to the inflatable interbody fusion cage in the utility model, the stepped arc adjustment groove is used to realize adjustment in different shifts, an interbody fusion operation can be quantized easily, use and operations become convenient, and the physical lordosis of lumbar vertebra can be recovered ideally.

Description

可膨胀椎间融合器 The expandable intervertebral fusion

技术领域 FIELD

[0001] 本实用新型涉及医疗器械领域,更具体地,涉及一种用于椎间融合手术的可膨胀椎间融合器。 [0001] The present invention relates to medical devices, and more particularly, relates to an expandable intervertebral fusion surgery for interbody fusion.

背景技术 Background technique

[0002] 腰椎椎间融合术通常用于治疗腰椎退变和不稳等病症,可以恢复椎间高度,扩大椎间孔,支撑前柱以及增加融合节段稳定性。 [0002] lumbar interbody fusion procedure typically used to treat degenerative lumbar disorders and instability, can restore disc height, expanding the intervertebral foramen, the front pillar support and increased stability fusion segments. 20世纪70年代末开始了椎间融合器的研究,后被用来治疗腰椎退行性改变和腰椎不稳等病症,这种治疗方法不仅可以恢复椎间的高度,扩大了椎间孔,同时还加强了前柱的支撑,增加了融合节段的稳定性。 The late 1970s began the study of the cage, after being used to treat degenerative changes in the lumbar spine and lumbar instability and other diseases, this treatment can not only restore the intervertebral height, expanding the intervertebral foramen, but also strengthen the support of the front pillars, increasing the stability of the fusion segment.

[0003] 近年来,许多种不同形状和材料的椎间融合器使用于临床,而其中常用的为圆柱状螺纹融合器和箱形融合器两大类。 [0003] In recent years, many different shapes and materials for use in clinical interbody fusion, and which are commonly used in a cylindrical shape and box thread fusion cage into two categories. 随着临床应用的推广和理论研究的进步,逐渐发现现有的椎间融合器存在不足。 With the promotion and advancement of clinical application of theoretical research, and gradually found deficiencies existing interbody fusion.

[0004] 圆柱状螺纹融合器的支撑体为圆柱形,表面有螺纹结构。 [0004] The threaded cylindrical support cage is cylindrical, threaded surface structure. 中国实用新型专利CN2361245Y公开了一种活动式螺纹状椎间融合器,该融合器由弹性钛合金箱笼和中间聚乙烯髓核组成,弹性钛合金箱笼为圆柱状空心结构,在管状外壁有两侧间断的螺纹,该间断处管壁的中央设有窗口,窗口两端的管壁上各有数条相互交错的切口。 Chinese utility model patent CN2361245Y discloses a movable threaded interbody fusion, the fusion cage is made of an elastic alloy and an intermediate nucleus composed of polyethylene, an elastic cylindrical titanium cage is a hollow structure with an outer wall on both sides of the tubular interrupted thread, the discontinuities provided in the center window wall, the wall of each notch across the window number of interdigitated. 然而,该圆柱状螺纹椎间融合器植入时的旋转切割作用对终板的破坏较大而容易导致塌陷和椎间隙高度下降,并且融合器本身体积大,植入时对后方原有稳定结构如关节突关节的切除较多而影响腰椎融合节段稳定性。 However, when the rotation of the cutting action of the cylindrical threaded interbody fusion implant damage to endplates results in large, easy to collapse and disc height decreases and the fusion itself bulky, stable original structure when implanted rearward such as facet joint resection of affected segment more stability lumbar fusion section. 此外,圆柱状的融合界面也容易产生明显的微动,甚至顺螺纹移动,加上本身附带的孔洞与终板接触面积小,从而容易导致椎间融合失败和移位。 Further, a cylindrical fusion interfaces easily produce significant fretting, or even along the threaded movement, coupled with its hole comes to the end plate contact area is small, thus easily lead to failure of the cage and shift.

[0005] 箱形融合器的支撑体为长方体框架,体积与圆柱状螺纹融合器相比较小,容易植入。 A support member [0005] The box-shaped cage of a rectangular parallelepiped frame, and the volume of the threaded cylindrical cage is small compared easy implantation. 中国已公开的发明申请CN103263309A公开了一种箱形融合器,该融合器主体部分设有自后下向前上的斜向凹槽,斜向凹槽用于配合椎弓根斜向螺钉以固定融合器。 China has published application CN103263309A invention discloses a box-shaped cage, the cage body portion is provided with a recess under the rear obliquely forwardly from the upper, obliquely slanted recess for engaging a pedicle screw to secure fusion device. 该专利文献公开的箱形融合器与传统的箱形融合器相同,均是需要附加椎弓根螺钉系统进行固定。 The box disclosed in Patent Document fusion with the conventional box-shaped cage same, are requiring additional pedicle screw fixation systems. 传统的箱形融合器与终板的接触面光滑,或者依靠齿状突起来防滑,界面固定力弱,不能提供足够的自稳性能,只能作为被动的前柱支撑。 The traditional box-shaped cage and the endplate contact surface is smooth, non-slip protrusions or by means of toothed, fixed interface weak, do not provide sufficient self-stabilizing properties, only as a passive supporting front pillar. 另外,传统的箱形融合器需要附加椎弓根螺钉系统固定,这也是目前临床上最为常用的手术方式。 Further, the conventional box-shaped fusion requires additional pedicle screw fixation system, which is currently the most commonly used in clinical surgery. 由于需要附加椎弓根螺钉系统进行固定,因此扩大了手术创伤并增加了手术费用。 Due to the need for additional pedicle screw fixation system, thus enlarging the surgical trauma and increase the cost of surgery. 此外,椎体融合术后,腰椎生理前凸恢复的不 In addition, interbody fusion without surgery, lumbar lordosis restoration

理相 Li phase

[0006] 由以上所述可知,圆柱状螺纹融合器以及现有的箱形融合器在前屈和左右侧屈方向上的腰椎稳定性增加,但不能增加后伸稳定性,另外这两种融合器在旋转方向上的稳定性也都明显降低。 [0006], the stability of the cylindrical threaded lumbar fusion and the conventional box-shaped cage on the right and left lateral bending and flexion direction to increase the apparent from the above, but can not increase the stability of extension, two additional fusion stability in the rotational direction is also significantly reduced. 随着微创手术的发展,为了有利于用微创技术植入椎间融合器,对椎间融合器的结构和外形设计提出了更高的要求。 With the development of minimally invasive surgery, in order to facilitate interbody fusion implants with minimally invasive techniques, the structure and exterior design of the cage put forward higher requirements. 因此,需要一种具有坚强界面稳定性能和高度自稳性能的扩张式腰椎椎间融合器,并且该椎间融合器不需要附加椎弓根螺钉进行固定,以使椎间融合手术微创化。 Accordingly, a need for a lumbar interbody fusion expandable strong stable performance and high stability performance from the interface, and the cage does not require an additional pedicle screw is fixed, so that minimally invasive interbody fusion procedures. 实用新型内容 SUMMARY

[0007] 为了解决上述问题,本实用新型提供一种用于椎间融合手术的可膨胀椎间融合器。 [0007] In order to solve the above problems, the present invention provides a procedure for an expandable interbody fusion intersomatic cage. 所述可膨胀椎间融合器通过采用阶梯状弧形调节槽能够实现分档调节,便于椎间融合手术量化,并且使用操作简便,性能可靠,可使椎体前柱前端的间隙大于前柱后端的间隙,恢复腰椎生理前凸理想,获得更有效且更安全的微创化椎间融合手术。 After the expandable intervertebral fusion adjusted by using stepped arcuate groove can be adjusted to achieve sub-file, to facilitate interbody fusion surgery quantization, and easy to use, reliable performance, the front end of the front pillar gap can be greater than the front pillar vertebral gap ends, ideal to restore lumbar lordosis, more effective and safer minimally invasive interbody fusion surgery.

[0008] 根据本实用新型的可膨胀椎间融合器包括:融合器主体,所述融合器主体具有近似长方体形状,融合器主体由相互连接的调节端头和膨胀部组成,调节端头的与膨胀部相邻的内端部设有调节孔,调节端头的外端部设有锁定螺纹孔,膨胀部由呈开口状的上膨胀体和下膨胀体构成,膨胀部的开口端具有植入端头,上膨胀体的上表面和下膨胀体的下表面分别具有与人体终板曲度相吻合的承重面,承重面分别沿着融合器主体的长度方向设有防滑齿,并且上膨胀体和下膨胀体的中央分别形成有上下对应的植骨孔,膨胀部的垂直于承重面的两个侧面分别沿着所述长度方向形成弧形调节槽,弧形调节槽与植骨孔连通,并且弧形调节槽的内径从植入端头向调节端头呈阶梯状减小;膨胀锁,所述膨胀锁设置在融合器主体的内部,并且包括膨胀头和分别从膨胀头的 [0008] According to the present invention, an expandable intersomatic cage comprising: a cage body, the fusion body has an approximately rectangular parallelepiped shape, the fusion body by the adjustment end and an expansion portion connected to each other, adjusted to the tip an outer end portion adjacent the inner end portion of the expansion portion is provided with adjustment holes, adjusting the tip provided with a locking screw hole, the expansion portion formed of expansion which is open on the lower body and the expandable body, the opening end portion of the expandable implant having end, the lower surface of the upper surface of the upper body and the lower expanded expandable body having a bearing surface of each end plate body curvature coincide, respectively, with non-slip teeth bearing surfaces along the longitudinal direction of the cage main body, and the upper expandable body and the center of the lower expandable body are formed corresponding to the upper and lower bone hole, the expansion portion of the vertical adjusting the arcuate grooves are formed along the longitudinal direction of the two sides of the bearing surface, the arcuate groove regulating hole communicating with the bone, and adjusting the inner diameter of the arcuate grooves decreases from the head end of the implant to the regulator stepped end; expanding lock, the lock is provided inside the expandable cage body, and includes an expansion from the expansion head and the head, respectively 侧平行于长度方向延伸的两个延伸部,膨胀头具有与弧形调节槽的最大直径部的形状相对应的圆柱形形状且膨胀头的直径小于最大直径部的直径,以使膨胀头配合在弧形调节槽中;调节拉杆,所述调节拉杆具有拉杆头和螺纹杆部,拉杆头的直径小于调节孔的直径,螺纹杆部螺纹连接到膨胀锁;和锁帽,所述锁帽设有用于与锁定螺纹孔相啮合的外螺纹。 Two parallel extending side portions extending in the longitudinal direction, having a first expanded diameter and a shape largest diameter portion of the arcuate groove regulating corresponding diameter of the cylindrical shape and smaller than the maximum diameter of the expanded head portion, so that the expansion head fit adjusting the arcuate slot; diameter adjusting rod, said adjusting rod having a rod head and a threaded shank, the head is smaller than the diameter of the rod of the adjustment hole, the threaded shank screwed to lock expansion; and a locking cap, the locking cap is provided with to the external thread of the locking screw hole engaged.

[0009] 优选地,两个延伸部之间的距离小于植骨孔的宽度。 [0009] Preferably, the distance between the two extension portions is less than the width of the bone hole. 膨胀锁还包括调节块,调节块以铰接方式连接在两个延伸部的端部之间。 Expansion lock further comprises adjustment block adjustment block hingedly connected between the ends of the two extending portions. 调节块的中央设有调节螺纹孔,螺纹杆部与调节螺纹孔螺纹连接。 An adjusting block adjustable central threaded bore, the threaded rod portion is connected to the adjusting screw hole.

[0010] 可选地,拉杆头可以具有六角内螺纹孔。 [0010] Alternatively, the rod may have a hex head screw hole.

[0011] 可选地,锁帽可以具有六角内螺纹孔。 [0011] Alternatively, the locking cap may have a hexagonal threaded bore.

[0012] 植入端头可以具有呈圆弧形、梯形或椭圆形的外形形状。 [0012] The implant may have a tip shape of a circular arc shape, trapezoidal, or oval.

[0013] 植骨孔可以具有矩形形状。 [0013] bone hole may have a rectangular shape.

[0014] 可选地,锁定螺纹孔的外周边可以设有十字形定位槽。 [0014] Alternatively, the outer periphery of the locking screw holes may be provided with a cross-shaped positioning groove.

附图说明 BRIEF DESCRIPTION

[0015] 本实用新型的上述及其它方面和特征将从以下结合附图对实施例的说明清楚呈现,其中: [0015] the present invention The above and other aspects and features from the following description of embodiments in conjunction with the accompanying drawings of clarity of presentation, in which:

[0016] 图1是根据本实用新型实施例的可膨胀椎间融合器的组合状态立体图; [0016] FIG. 1 is a perspective view of a combined state of an embodiment of the present invention, an expandable intersomatic cage;

[0017] 图2是显示所述可膨胀椎间融合器的融合器主体的结构的立体图; [0017] FIG. 2 is a perspective view of the expandable cage of the cage body;

[0018] 图3是所述可膨胀椎间融合器的融合器主体的剖面图; [0018] FIG. 3 is a sectional view of the expandable intervertebral fusion cage of the body;

[0019] 图4是所述可膨胀椎间融合器的膨胀锁的立体图; [0019] FIG. 4 is a perspective view of the expansion of the expandable intervertebral fusion device of the lock;

[0020] 图5是所述可膨胀椎间融合器的调节拉杆的立体图; [0020] FIG. 5 is a perspective view of the adjustment rod of the expandable intervertebral fusion device;

[0021] 图6是所述可膨胀椎间融合器的锁帽的立体图;以及 [0021] FIG. 6 is a perspective view of the locking cap expandable intersomatic cage; and

[0022] 图7是根据本实用新型实施例的可膨胀椎间融合器的组合状态立体图。 [0022] FIG. 7 is a perspective view of an assembled state according to the present invention may be an expandable cage embodiment.

具体实施方式[0023] 下面参照附图详细描述本实用新型的说明性、非限制性实施例,对根据本实用新型的可膨胀椎间融合器进行进一步说明。 DETAILED DESCRIPTION [0023] of the present invention the following illustrative, non-limiting embodiments described in detail with reference to the drawings further illustrate the present invention, an expandable intersomatic cage.

[0024] 具体地,参见图1和图2,根据本实用新型实施例的可膨胀椎间融合器包括融合器主体1、膨胀锁2、调节拉杆3和锁帽4。 [0024] In particular, referring to FIG 1 and FIG 2, according to the present invention, an expandable intervertebral fusion cage embodiment includes a main body 1, the expansion locks 2, 3 adjusting lever 4 and the locking cap. 融合器主体I具有近似长方体的形状,膨胀锁2和调节拉杆3设置在融合器主体I的内部,锁帽4连接到融合器主体I的一端以将膨胀锁和调节拉杆锁定在所述融合器主体中。 I fusion body has an approximately rectangular parallelepiped shape, the expansion locking regulating rod 3 and 2 disposed in the interior of the cage body I, the locking cap 4 connected to one end of the cage body I and adjusted to lock the expansion of said locking rod cage body.

[0025] 接下来,将参照附图进一步详细说明根据本实用新型的可膨胀椎间融合器的结构。 [0025] Next, the structure of the present invention, an expandable intersomatic cage according to described in further detail with reference to the accompanying drawings.

[0026] 图2是显示根据本实用新型实施例的可膨胀椎间融合器的融合器主体的结构的立体图,图3是融合器主体的剖面图。 [0026] FIG. 2 is a perspective view of the body of an expandable fusion cage according to the present embodiment of the invention, FIG 3 is a sectional view of the cage body. 融合器主体I由相互连接的调节端头11和膨胀部12组成(如图1所示)。 I fusion by the adjustment body 11 connected to each end portion 12 and an expansion composition (Figure 1). 调节端头11的与膨胀部12相邻的内端部设有调节孔110,而调节端头11的外端部设有锁定螺纹孔111。 And adjusting the inner end portion 12 adjacent the tip 11 of the expansion portion is provided with adjustment hole 110, the adjustment head 11 ends of the outer end portion is provided with a locking screw hole 111. 膨胀部12由呈开口状的上膨胀体121和下膨胀体122构成,并且膨胀部12的开口端具有植入端头123。 The expansion portion 12 which is open by the expansion of the body 121 and the lower expansion configuration 122, and the opening end of the expansion portion 12 having a tip implant 123. 优选地,植入端头123可以具有呈圆柱形、梯形或椭圆形的外形形状以便于植入。 Preferably, tip implant 123 may have a cylindrical, oval or trapezoidal outer shape to facilitate implantation. 要注意的是,在此所述的植入端头的外形形状仅是示例性的,而不意指受限于此,植入端头的外形形状可以采用便于植入的任何形状。 It is noted that in this implant tip according to the outer shape is exemplary only, and not meant limited thereto, the outer shape of the implant tip any shape may be employed to facilitate implantation. 上膨胀体121的上表面和下膨胀体122的下表面分别具有与人体终板曲度相吻合的承重面120,以用于支承人体终板。 The lower surface of the upper surface 121 of expandable body 122 and the lower expansion of the body each have a bearing surface curvature coinciding endplate 120 to the body for supporting the endplate. 承重面120分别沿着融合器主体I的长度方向设有防滑齿124,所述防滑齿在融合手术期间被固定在上下椎体的终板上,以起到牢固固定自稳的作用,从而防止椎体融合器移位。 The bearing surface 120 are provided along the longitudinal direction of the body I fusion slip teeth 124, the teeth are fixed to the upper and lower slip vertebral endplates during a fusion procedure, fixedly secured to act as a self-stabilizing effect, thereby preventing interbody fusion device displacement. 上膨胀体121和下膨胀体122的中央分别形成有上下对应的植骨孔125,由此可获得较大的植骨孔空间,从而使得性能可靠。 The expanded expandable body 121 and the lower body 122 are formed with a central vertical aperture 125 corresponding to the bone, thus obtained graft large pore space, so that reliable performance. 在图2所示的实施例中,例如,植骨孔125具有矩形形状,但植骨孔的形状不限于此。 In the embodiment illustrated in Figure 2, for example, bone hole 125 has a rectangular shape, but the shape of the bone hole is not limited thereto. 根据本实用新型的实施例,膨胀部12的垂直于承重面的两个侧面分别沿着长度方向形成弧形调节槽126,该弧形调节槽与植骨孔连通,并且弧形调节槽126的内径从植入端头123向调节端头11呈阶梯状减小。 According to an embodiment of the present invention, the vertical inflation portion 12 are formed on both sides along the longitudinal direction of the bearing surface of the arcuate adjustment slot 126, the arcuate groove regulating bone hole communicates, and adjusting the arcuate groove 126 of adjusting the inner diameter of the tip from the end of the implant 11 has a stepped head 123 is reduced.

[0027] 图4是示意性地显示设置在融合器主体内部的膨胀锁2的结构的立体图。 [0027] FIG 4 is a schematically shows a perspective view of the structure provided inside the expanded cage body 2 of the lock. 膨胀锁2包括膨胀头21和分别从膨胀头21的两侧平行于融合器的长度方向延伸的两个延伸部22。 Expanding lock 2 comprises an expansion head 21 and two extension portions extending from both sides of the expansion head 21 parallel to the longitudinal direction of the cage 22. 膨胀头21具有与弧形调节槽126的最大直径部的形状相对应的圆柱形形状,并且膨胀头的直径小于最大直径部的直径,以使膨胀头配合在弧形调节槽中。 The expansion head 21 has a cylindrical shape with a maximum diameter of the arcuate regulation portion 126 corresponding to the groove, and a swollen head diameter smaller than the maximum diameter portion, so that the expansion head with adjustable arcuate slot.

[0028] 参见图5,调节拉杆3具有拉杆头31和螺纹杆部32。 [0028] Referring to Figure 5, the adjustment lever rod 3 has a head 31 and a threaded shank portion 32. 拉杆头31的直径小于融合器主体I的调节孔Iio的直径,以便能够通过调节孔110将调节拉杆3放置到融合器主体I的内部。 Diameter smaller than the diameter of the rod head 31 of the adjusting holes Iio fusion body I so that the hole 110 can be adjusted by adjusting arm 3 placed inside the body I of the fusion device. 螺纹杆部32螺纹连接到膨胀锁2。 Threaded shank 32 screwed to the expansion lock 2. 可选地,拉杆头31可以具有六角内螺纹孔310,该六角内螺纹孔可以与标准的六角螺杆相配合,使得能够通过标准的六角螺杆来旋转拉杆头,从而带动调节拉杆来调节可膨胀椎间融合器的张开度。 Alternatively, rod 31 may have a hex head screw hole 310, the threaded hole of the hexagon can mate with a standard hexagonal screw head makes it possible to rotate the lever by standard hexagonal screw adjustment rod is adjusted so as to drive the expandable vertebral fusion between the open degrees.

[0029] 锁帽4设有用于与锁定螺纹孔111相啮合的外螺纹41,如图6所示。 [0029] The locking cap 4 is provided with an external thread for a locking screw 41 engaged hole 111, as shown in FIG. 可选地,锁帽4可以具有六角内螺纹孔42,该六角内螺纹孔可以与标准的六角螺杆相配合,使得能够通过标准的六角螺杆来旋转锁帽,以将膨胀锁和调节拉杆锁定在融合器主体内。 Alternatively, the locking cap 4 may have a hexagonal threaded bore 42, within which the hexagonal hole may mate with a standard threaded hex screws, so that the locking cap can be rotated by a standard hexagonal screw, and adjusted to lock the expanded locking lever integration within the body.

[0030] 根据本实用新型的一个示例性实施例,膨胀锁2还包括调节块23。 [0030] According to the present invention an exemplary embodiment, the expansion lock 2 further comprising adjusting block 23. 膨胀锁2的两个延伸部22之间的距离小于植骨孔的宽度。 Two lock portions 2 extending in the expansion of the distance between the holes 22 is smaller than the width of the graft. 调节块23以铰接方式连接在两个延伸部22的端部之间,从而能够相对于延伸部22旋转。 Adjustment block 23 is connected in an articulated manner between the ends of the two extending portions 22, thereby enabling rotation with respect to the extending portion 22. 调节块23的中央设有调节螺纹孔24,调节拉杆3的螺纹杆部32与调节螺纹孔24螺纹连接。 Adjustment block 23 is provided with a central threaded hole 24 adjusted, adjusting the threaded shank 32 of the pull rod 3 is connected to the threaded adjustment screw hole 24. [0031] 下面,将说明根据本实用新型实施例的可膨胀椎间融合器的操作过程。 [0031] Next, the operation will be explained according to the present invention may be an expandable cage embodiment. 首先,将融合器的膨胀锁2的调节块23旋转至平行于膨胀锁的延伸部22。 First, the expander lock fusion device 23 of the adjusting block 2 is rotated to extend parallel to the expanded portion 22 of the lock. 接着,经由弧形调节槽126将膨胀锁2从融合器主体I的侧面放入融合器中,此时膨胀锁的圆柱形膨胀头21被置于弧形调节槽的最大直径部中,如图1和图7所示。 Next, via the arcuate slot 126 will be adjusted into the expander 2 from the side of the lock body I of the fusion cage, in which case expansion of the expansion cylinder lock head 21 is placed in the arcuate groove regulating a maximum diameter portion in FIG. 1 and FIG. 然后,将调节块23旋转至垂直于延伸部22,再经由调节孔110将调节拉杆3从调节端头11放入融合器主体I内,将螺纹杆部32旋入调节螺纹孔24中,从而将调节拉杆3连接到膨胀锁2。 Then, the adjusting block 23 is rotated to a vertical extending portion 22, and then through hole 110 to adjust the adjusting lever 3 from the tip 11 into the regulator body fusion I, the threaded shank 32 is screwed into the threaded adjusting bore 24, thereby adjusting lock lever 3 is connected to the expansion 2. 当将本实用新型的椎间融合器植入腰椎之后,可以使用六角螺杆旋转调节拉杆3,在弧形调节槽126中朝向调节端头11拉动膨胀锁2,从而使上膨胀体121和下膨胀体122逐步张开。 When the present invention lumbar interbody fusion implant, may be adjusted using a hexagonal screw rotation lever 3, the arcuate slot 126 toward the adjustment end 11 to pull the expansion adjustment lock 2, so that the upper 121 and lower expandable body is expanded 122 gradually open. 也就是说,根据本实用新型的融合器通过阶梯状弧形调节槽126能够分档调节上膨胀体和下膨胀体的张开度,例如,每调一档张开4度,从而加压撑顶在上下椎体的终板之间。 That is, according to the present invention is adjusted by the stepped fusion arcuate slot 126 can adjust the opening degree of the sub-file and the expanded expandable body member, e.g., a file transfer each of 4 open, thereby pressing the top of the support between the upper and lower vertebral endplates. 逐步调节膨胀锁到适当张开度之后,通过六角螺杆将锁帽4旋进调节端头11的锁定螺纹孔111,锁定调节拉杆3的位置,从而锁定膨胀开的融合器。 After gradually adjust to an appropriate opening degree of the expansion locked by the locking cap hexagonal screw 4 is screwed into the threaded adjustment hole 111 locking tip 11, adjusting the position of the locking lever 3, so that the locking opening of the expansion of the fusion cage. 可选地,融合器主体I的锁定螺纹孔111的外周边可以设有十字形定位槽112,以便于在手术期间将可膨胀椎间融合器放入人体内。 Alternatively, cage body I a locking screw hole 111 may be provided with an outer periphery of a cross-shaped positioning groove 112, so as to put the human body during surgery expandable intersomatic cage.

[0032] 根据本实用新型的可膨胀椎间融合器体积小,植入时操作简便,与传统的箱形融合器相比,由于可使椎体前柱前端的间隙大于前柱后端的间隙,因此恢复腰椎生理前凸理想。 [0032] According to the present invention, an expandable intersomatic cage is small, easy to operate when implanted, as compared with the conventional box-shaped cage, since the front end of the front pillar can vertebral column is greater than the gap clearance before the rear end, Therefore restore lumbar lordosis ideal. 此外,本实用新型的融合器通过采用阶梯状弧形调节槽能够实现分档调节,便于椎间融合手术量化。 In addition, fusion of the present invention by using the stepped arcuate groove can be adjusted to achieve sub speed adjustment, to facilitate interbody fusion surgery quantization. 同时,本实用新型的融合器将上下承重面上的防滑齿固定在上下椎体的终板上,起到牢固固定自稳的作用,具有较高的界面稳定性和自稳性,由此不需要附加椎弓根螺钉固定,使椎间融合手术微创化,有利于椎体的融合,植入时对腰椎原有稳定结构和终板破坏较小。 Meanwhile, the present invention will slip fusion upper and lower bearing surfaces of the teeth fixed to the upper and lower vertebral endplates, play a role in homeostasis fixedly secured, has a high interface stability and self-stability, thereby not require additional pedicle screw, so that minimally invasive interbody fusion procedures, facilitate fusion of vertebrae, lumbar vertebrae upon implantation of the original in a stable structure and less damage to endplates.

[0033] 尽管对本实用新型的典型实施例进行了说明,但是显然本领域技术人员可以理解,在不背离本实用新型的精神和原理的情况下可以进行改变,其范围在权利要求书以及其等同物中进行了限定。 [0033] Although the present invention exemplary embodiments have been described, it will be apparent skilled in the art will be appreciated that changes may be made without departing from the present invention the principles and spirit, the scope of the appended claims and their equivalents It was been defined.

Claims (7)

1.一种可膨胀椎间融合器,其特征在于,所述可膨胀椎间融合器包括: 融合器主体,所述融合器主体具有近似长方体形状,所述融合器主体由相互连接的调节端头和膨胀部组成,所述调节端头的与所述膨胀部相邻的内端部设有调节孔,所述调节端头的外端部设有锁定螺纹孔,所述膨胀部由呈开口状的上膨胀体和下膨胀体构成,所述膨胀部的开口端具有植入端头,所述上膨胀体的上表面和所述下膨胀体的下表面分别具有与人体终板曲度相吻合的承重面,所述承重面分别沿着所述融合器主体的长度方向设有防滑齿,并且所述上膨胀体和所述下膨胀体的中央分别形成有上下对应的植骨孔,所述膨胀部的垂直于所述承重面的两个侧面分别沿着所述长度方向形成弧形调节槽,所述弧形调节槽与所述植骨孔连通,并且所述弧形调节槽的内径从所述植入端头向所述 An expandable intervertebral fusion device, wherein the expandable intervertebral fusion device comprising: a body fusion, the fusion body has an approximately rectangular parallelepiped shape, the end of the regulator body fusion interconnected by a and an expansion unit composed of the head, the adjusting screw hole outer end portion of the expansion portion and an inner end portion adjacent to the tip of the adjustment hole is provided, the adjustment head is provided with a locking end, the opening shape of the expanded portion expanding body shaped upper and lower expandable body constituted expanded open end of said implant portion having a tip, the lower surface of the upper expandable body upper surface and the lower expandable body each have a curvature relative to the body endplate consistent bearing surface, said bearing surfaces are provided with teeth along a longitudinal direction of the skid cage body, and the upper expandable body and a center of the lower expandable body corresponding to the upper and lower bone holes are formed, the said vertical expansion portion respectively formed in the two lateral bearing surfaces along the longitudinal direction of the adjusting arcuate groove, said arcuate groove communicating with said regulating bone hole, and the inner diameter of the arcuate groove regulating from the tip to the implant 调节端头呈阶梯状减小; 膨胀锁,所述膨胀锁设置在所述融合器主体的内部,并且包括膨胀头和分别从所述膨胀头的两侧平行于所述长度方向延伸的两个延伸部,所述膨胀头具有与所述弧形调节槽的最大直径部的形状相对应的圆柱形形状且所述膨胀头的直径小于所述最大直径部的直径,以使所述膨胀头配合在所述弧形调节槽中; 调节拉杆,所述调节拉杆具有拉杆头和螺纹杆部,所述拉杆头的直径小于所述调节孔的直径,所述螺纹杆部螺纹连接到所述膨胀锁;和锁帽,所述锁帽设有用于与所述锁定螺纹孔相啮合的外螺纹。 Adjusting tip stepwisely decreases; expanding lock, the lock is provided inside the expandable cage body, and including a swollen head and two parallel sides extending from the expansion in the longitudinal direction of the head extending portion, said expanded head having a cylindrical shape largest diameter portion of the arcuate groove regulating corresponding head and said expanded diameter smaller than said maximum diameter portion, so that the expanded head with adjusting said arcuate groove; adjusting rod, said adjusting rod having a rod head and a threaded shank, the diameter of the rod head is smaller than the diameter of the regulating hole, said threaded shank screwed to lock the expanded ; and a locking cap, the locking cap is provided with external thread for the locking engagement of the threaded hole.
2.根据权利要求1所述的可膨胀椎间融合器,其特征在于: 所述两个延伸部之间的距离小于所述植骨孔的宽度; 所述膨胀锁还包括调节块,所述调节块以铰接方式连接在所述两个延伸部的端部之间;以及所述调节块的中央设有调节螺纹孔,所述螺纹杆部与所述调节螺纹孔螺纹连接。 The expandable intervertebral cage according to claim 1, wherein: the distance between the two extension portions is less than the width of the bone hole; lock further comprises adjusting said expansion blocks, adjustment block hingedly connected between the two ends of the extending portion; and a central adjustment of the adjusting block is provided with a threaded hole, said threaded shank portion of the adjusting screw hole connection.
3.根据权利要求1所述的可膨胀椎间融合器,其特征在于,所述拉杆头具有六角内螺纹孔。 According to claim expandable intervertebral fusion device of claim 1, wherein said rod has a hex head screw hole.
4.根据权利要求1所述的可膨胀椎间融合器,其特征在于,所述锁帽具有六角内螺纹孔。 The expandable intervertebral cage according to claim 1, wherein the locking cap has a hexagonal threaded bore.
5.根据权利要求1所述的可膨胀椎间融合器,其特征在于,所述植入端头具有呈圆弧形、梯形或椭圆形的外形形状。 5. The expandable intervertebral cage according to claim 1, wherein the implant tip having a circular arc profile shape, trapezoidal, or oval.
6.根据权利要求1所述的可膨胀椎间融合器,其特征在于,所述植骨孔具有矩形形状。 6. The expandable intervertebral cage according to claim 1, wherein said graft hole has a rectangular shape.
7.根据权利要求1所述的可膨胀椎间融合器,其特征在于,所述锁定螺纹孔的外周边设有十字形定位槽。 The expandable intervertebral cage according to claim 1, wherein an outer periphery of said locking screw hole is provided with a cross-shaped positioning groove.
CN201420074686.4U 2014-02-21 2014-02-21 Inflatable interbody fusion cage CN203749649U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420074686.4U CN203749649U (en) 2014-02-21 2014-02-21 Inflatable interbody fusion cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420074686.4U CN203749649U (en) 2014-02-21 2014-02-21 Inflatable interbody fusion cage

Publications (1)

Publication Number Publication Date
CN203749649U true CN203749649U (en) 2014-08-06

Family

ID=51244958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420074686.4U CN203749649U (en) 2014-02-21 2014-02-21 Inflatable interbody fusion cage

Country Status (1)

Country Link
CN (1) CN203749649U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103876865A (en) * 2014-02-21 2014-06-25 吉林医药学院 Expandable interbody fusion cage
CN105726171A (en) * 2016-04-05 2016-07-06 广州爱锘德医疗器械有限公司 Adjustable fusion cage device
CN105853030A (en) * 2016-03-25 2016-08-17 广州军区广州总医院 Dilatable cervical vertebral fusion cage
CN106726018A (en) * 2017-01-19 2017-05-31 张衣北 The adjustable intervertebral of Wedged fixes fusion device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103876865A (en) * 2014-02-21 2014-06-25 吉林医药学院 Expandable interbody fusion cage
CN103876865B (en) * 2014-02-21 2016-04-27 吉林医药学院 Inflatable Invasive lumbar fusion device
CN105853030A (en) * 2016-03-25 2016-08-17 广州军区广州总医院 Dilatable cervical vertebral fusion cage
CN105726171A (en) * 2016-04-05 2016-07-06 广州爱锘德医疗器械有限公司 Adjustable fusion cage device
CN106726018A (en) * 2017-01-19 2017-05-31 张衣北 The adjustable intervertebral of Wedged fixes fusion device

Similar Documents

Publication Publication Date Title
US6905512B2 (en) System for stabilizing the vertebral column including deployment instruments and variable expansion inserts therefore
US8382768B2 (en) Apparatus and methods for inserting an implant
US7776042B2 (en) Methods and apparatus for provision of therapy to adjacent motion segments
US7789895B2 (en) Sacral reconstruction fixation device
US8512347B2 (en) Cervical distraction/implant delivery device
US10292830B2 (en) Bone fusion device, system and method
US6669699B2 (en) Distraction instrument for use in anterior cervical fixation surgery
US7938837B2 (en) Femoral ring loader
US10045855B2 (en) Polyaxial orthopedic fastening apparatus with independent locking modes
CN1160030C (en) Cervical disk and spinal stabilizer
US10092422B2 (en) Bone fusion device, apparatus and method
US8663331B2 (en) Maximum support TLIF implant
US8940049B1 (en) Expandable intervertebral cage
US9737412B2 (en) Intervertebral implant having extendable bone fixation members
US8496661B2 (en) System and method for micro-invasive transfacet lumbar interbody fusion
US7988695B2 (en) Articulated delivery instrument
US8652174B2 (en) Expandable interspinous process spacer
JP6223958B2 (en) Intervertebral device
US20050245937A1 (en) System and method for insertion of an interspinous process implant that is rotatable in order to retain the implant relative to the spinous processes
US20100114182A1 (en) Surgical instruments for delivering forces to bony strucures
US9204972B2 (en) Articulating expandable intervertebral implant
US9827021B2 (en) Transverse connector
CN1134243C (en) Intervertebral disc stabilizer
CN101146487B (en) Spinal fixation locking mechanism
AU2012296522B2 (en) Expandable implant

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
CF01