阅读说明：本技术 一种可倒插式椎间孔镜下椎间融合器 (Intervertebral fusion ware under formula of can inserting intervertebral foramen mirror upside down ) 是由 马超 刘光旺 曲新华 刘珅 高娟 戴维享 赵猛 王栋 王兆红 冯杰 孟庆芳 陈 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种可倒插式椎间孔镜下椎间融合器,属于手术器械领域,包括手柄、连接杆、套杆、和融合器本体,固定座远离套杆的一侧设置有固定固定融合器本体的两个固定杆；融合器本体为子弹型结构,融合器本体的上、下表面设置有倒齿,融合器本体的末端两侧还开设有固定槽,融合器本体末端中央开设有螺纹槽,连接杆空心部分的一端为卡叉固定组件,连接杆实心部分有外螺纹,均可与融合器相连,连接杆空心部分与融合器本体相连后,可倒插入脊柱内镜器械通道,带手柄的连接杆实心部分经内镜器械通道后端从连接杆空心部分套入至融合器的末端,其外螺纹与融合器内螺纹相连接,本发明可以在椎间孔镜下使用,能够让医生更准确的观察到融合器放置的位置。(The invention discloses an intervertebral fusion cage under an intervertebral foramen mirror capable of being inserted reversely, which belongs to the field of surgical instruments and comprises a handle, a connecting rod, a loop bar and a fusion cage body, wherein two fixing rods for fixing and fixing the fusion cage body are arranged on one side of a fixing seat far away from the loop bar; the fusion cage body is of a bullet structure, the upper surface and the lower surface of the fusion cage body are provided with inverted teeth, the two sides of the tail end of the fusion cage body are further provided with fixing grooves, the center of the tail end of the fusion cage body is provided with a thread groove, one end of the hollow part of the connecting rod is provided with a clamping fork fixing component, the solid part of the connecting rod is provided with external threads and can be connected with the fusion cage, the hollow part of the connecting rod can be reversely inserted into a spinal endoscope instrument channel after being connected with the fusion cage body, the solid part of the connecting rod with a handle is sleeved into the tail end of the fusion cage from the hollow part of the connecting rod through the rear end of the endoscope instrument channel, and the external threads are connected with the internal threads of the fusion cage.)

1. The intervertebral fusion cage under the intervertebral foramen mirror of a kind of can be inserted upside down, characterized by, including the hand grip, connecting rod fixedly connected with said hand grip, cup joint the loop bar on said connecting rod, fixing base and fusion cage body connected to one end of said loop bar, one end of the said connecting rod stretches out from one side of the said fixing base, one side far away from said loop bar of the said fixing base has two dead levers to fix the said fusion cage body;

the fuse body is of a bullet type structure, a through hole is formed in the fuse body, the upper surface and the lower surface of the fuse body are provided with inverted teeth, a fixing groove matched with the fixing rod is further formed in one side of the fuse body, a thread groove is formed in one end, close to the fixing seat, of the fuse body, a threaded rod matched with the thread groove is fixedly connected to one end of the connecting rod, and a half thread groove perpendicular to the end face is further formed in one side of the fuse body.

2. The intervertebral fusion cage with the inverted intervertebral foramen mirror as claimed in claim 1, wherein a sliding block is fixedly connected to one end of the fixing rod close to the fixing base, a sliding groove matched with the sliding block is formed in one side of the fixing base, and the sliding block is slidably disposed in the sliding groove.

3. The inverted intervertebral foramen endoscopic interbody fusion cage as claimed in claim 2, wherein the sleeve rod is slidably provided with a fixing cover, one end of the fixing cover is provided with an opening, the fixing cover is provided with a jack, the jack is movably connected with an insert rod, the jack is further provided with a return spring, the sleeve rod is fixedly connected with a slide rail at one end, and the fixing cover is provided with a yielding groove for yielding the slide rail.

4. The invertible foramen endoscopic intersomatic cage of claim 3, wherein the external diameter of the loop bar is 3.5 mm.

5. The invertible foramen endoscopic intersomatic cage of claim 4, wherein the length of the sleeve is 320 mm.

6. The invertible foramen endoscopic interbody fusion cage of claim 1, wherein the cage body is of PEEK resin material.

7. The invertible foramen endoscopic interbody fusion cage of claim 1, wherein the cage body is a titanium alloy material.

Technical Field

The invention relates to the field of surgical instruments, in particular to an invertible intervertebral fusion device under an intervertebral foramen mirror.

Background

Degenerative lumbar diseases include herniated disc, spinal stenosis, segmental instability, degenerative spondylolisthesis, degenerative scoliosis and the like, and are common diseases in the middle-aged and elderly people. The lumbar interbody fusion surgery for people who are unstable in the intervertebral during decompression and internal fixation is known, the lumbar interbody fusion surgery aims to prevent instability from further developing, and stability reconstruction is carried out through an operation method, the process of intervertebral fusion is promoted, because of differences among patients, the sizes and the sizes of required fusion devices are different, some patients need to be plugged in two fusion devices, tools on the market can only gradually put in two fusion devices, when the two fusion devices are gradually put in, the first fusion device can block the second fusion device, the position of the first fusion device is easy to change when the second fusion device is put in, the first fusion device needs to be taken out again and put in again, and the operation is inconvenient.

Disclosure of Invention

The invention provides an intervertebral fusion cage under an intervertebral foramen mirror capable of being inserted reversely, which can solve the problem that an intervertebral fusion cage tool in the prior art is inconvenient to simultaneously place two fusion cages on an intervertebral disc affected part.

An invertible intervertebral foramen mirror lower intervertebral fusion cage comprises a handle, a connecting rod fixedly connected with the handle, a loop bar sleeved on the connecting rod, a fixed seat connected with one end of the loop bar and a fusion cage body, wherein one end of the connecting rod extends out of one side of the fixed seat, and one side of the fixed seat, which is far away from the loop bar, is provided with two fixed rods for fixing the fusion cage body;

the fuse body is of a bullet type structure, a through hole is formed in the fuse body, the upper surface and the lower surface of the fuse body are provided with inverted teeth, a fixing groove matched with the fixing rod is further formed in one side of the fuse body, a thread groove is formed in one end, close to the fixing seat, of the fuse body, a threaded rod matched with the thread groove is fixedly connected to one end of the connecting rod, and a half thread groove perpendicular to the end face is further formed in one side of the fuse body.

Preferably, one end of the fixed rod, which is close to the fixed seat, is fixedly connected with a sliding block, one side of the fixed seat is provided with a sliding groove matched with the sliding block, and the sliding block is slidably arranged in the sliding groove.

Preferably, the loop bar is provided with a fixed cover in a sliding manner, one end of the fixed cover is provided with an opening, the fixed cover is provided with a jack, the jack is movably connected with an insert rod, a reset spring is further arranged in the jack, the loop bar is fixedly connected with one end slide rail, and the fixed cover is provided with a yielding groove for yielding the slide rail.

Preferably, the outer diameter of the loop bar is 3.5 mm.

Preferably, the length of the sleeve rod is 320 mm.

Preferably, the fusion cage body is made of polyether ether ketone resin material.

Preferably, the fusion cage body is made of a titanium alloy material.

Compared with the prior art, the invention has the beneficial effects that: the outer diameter of the loop bar is smaller than the inner diameter of a working channel of a general transforaminal endoscope, so that the loop bar can be used under the transforaminal endoscope, and a doctor can more accurately observe the position where the fusion cage is placed; can send one to the lumbar vertebrae intervertebral department or send two fusion wares to the lumbar vertebrae intervertebral department simultaneously according to the condition of different diseases, it is more convenient to operate, and it is more convenient than progressively putting into to put into simultaneously two fusion wares, and effectively prevents the emergence of progressively putting into the fusion ware dislocation condition that brings.

Drawings

FIG. 1 is a schematic structural diagram I of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic diagram II of the present invention;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 3 in accordance with the present invention;

FIG. 5 is a schematic view of the present invention in a configuration where a cage is installed;

fig. 6 is a state diagram of the present invention in use.

Description of reference numerals:

1-handle, 2-connecting rod, 3-loop bar, 4-fixing seat, 5-fusion device body, 6-fixing rod, 7-fixing cover, 8-through hole, 9-pawl, 10-fixing groove, 11-thread groove, 12-threaded rod, 13-half thread groove, 14-sliding block, 15-sliding groove, 16-inserted rod, 17-reset spring, 18-sliding rail and 19-abdicating groove.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

As shown in fig. 1 to 6, an intervertebral fusion cage under an intervertebral foramen mirror capable of being inserted upside down according to an embodiment of the present invention includes a handle 1, a connecting rod 2 fixedly connected to the handle 1, a loop bar 3 sleeved on the connecting rod 2, a fixing base 4 connected to one end of the loop bar 3, and a fusion cage body 5, wherein one end of the connecting rod 2 extends out from one side of the fixing base 4, and one side of the fixing base 4 away from the loop bar 3 is provided with two fixing rods 6 for fixing the fusion cage body 5;

the fusion cage is characterized in that the fusion cage body 5 is of a bullet-shaped structure, a through hole 8 is formed in the fusion cage body 5, inverted teeth 9 are arranged on the upper surface and the lower surface of the fusion cage body 5, a fixing groove 10 matched with the fixing rod 6 is further formed in one side of the fusion cage body 5, a thread groove 11 is formed in one end, close to the fixing seat 4, of the fusion cage body 5, a threaded rod 12 matched with the thread groove 11 is fixedly connected to one end of the connecting rod 2, and a half thread groove 13 perpendicular to the end face is further formed in one side of the fusion cage body 5;

the threaded rod 12 can be screwed either into the thread groove 11 of the cage body 5 or into a complete thread groove consisting of the half-thread grooves 13 of the two cage bodies 5; when only one fusion cage body 5 is placed, the threaded rod 12 is screwed into the threaded groove 11 of the fusion cage body 5, when two fusion cage bodies 5 are placed simultaneously, the half-threaded grooves 13 of the two fusion cage bodies 5 can form a complete threaded groove, and the two fixing rods 6 can enable the two fusion cage bodies 5 to be tightly attached, so that the threaded connection relationship between the threaded rod 12 and the half-threaded grooves 13 is ensured;

the fixing rod 6 is clamped into the fixing groove 10 of the fusion cage body 5, and when the threaded rod 12 is unscrewed, the fusion cage body 5 can be prevented from rotating along with the threaded rod 12;

the sliding block 14 at one end of the fixed rod 6 can only slide in the sliding groove 15 and can not fall off from the sliding groove 15, and the sliding block 14 is T-shaped;

when the distance between the two fixing rods 6 is adjusted to be maximum, the two fusion cage bodies 5 can be just placed in the fusion cage, when the distance between the two fixing rods 6 is adjusted to be minimum, one fusion cage body 5 can be just placed in the fusion cage, the fusion cage bodies 5 have different sizes, and the fusion cage bodies 5 with different sizes are provided with matched under-mirror tools;

one end of the fixed rod 6, which is close to the fixed seat 4, is fixedly connected with a sliding block 14, one side of the fixed seat 4 is provided with a sliding groove 15 which is matched with the sliding block 14, and the sliding block 14 is slidably arranged in the sliding groove 15;

a fixed cover 7 is slidably arranged on the loop bar 3, an opening is formed in one end of the fixed cover 7, an insertion hole is formed in the fixed cover 7, an insertion bar 16 is movably connected in the insertion hole, a return spring 17 is further arranged in the insertion hole, a slide rail 18 at one end is fixedly connected to the loop bar 3, and a yielding groove 19 for yielding the slide rail 18 is formed in the fixed cover 7;

part of the loop bar 3 can be located in the handle 1, a certain friction force exists between the handle 1 and the loop bar 3, when the handle is rotated, the loop bar 3 can be driven to rotate, when the fusion device body 5 is placed in the lumbar intervertebral, the handle 1 is directly rotated, in order to enable the threaded rod 12 to be screwed out from the threaded groove 11, the fusion device body 5 is separated from the fixing seat 4, the lumbar vertebra can bear a part of axial force and is easy to damage the lumbar vertebra of a patient, when the fusion device is used under an intervertebral foramen mirror, the loop bar 3 is not convenient to hold by hands, the intervertebral foramen mirror also needs to be held by hands, in order to enable the operation to be more convenient, the fixing cover 7 can be used for connecting the loop bar 3 and the tail end of the intervertebral foramen mirror together, the fixing cover 7 can slide on the loop bar 3, the rotation of the loop bar 3 can be limited by fixing the fixing cover 7, the fixing cover 7 can be sleeved on the tail end of the intervertebral foramen mirror, two inserting bars 16 can be pressed, The inserting rod 16 is abutted against the outer wall of the tail end of the intervertebral foramen mirror, namely the fixing cover 7 is clamped on the intervertebral foramen mirror, so that the sleeve rod 3 is connected with the intervertebral foramen mirror, and the insertion and the extraction of the sleeve rod 3 are not influenced.

The outer diameter of the loop bar 3 is 3.5 mm.

The length of the loop bar 3 is 320 mm.

Furthermore, the fusion cage body 5 is made of titanium alloy material, medical titanium alloy has better biocompatibility and mechanical strength, is easy to process and low in cost, polyether ether ketone (PEEK) is more expensive compared with titanium alloy, the main problem is still limited by materials and processing means, and the manufacturing cost of the fusion cage made of polyether ether ketone resin material is 2-5 times of that of the titanium alloy material.

The working principle is as follows: when the device is used, one end of the sleeve rod 3 close to the handle 1 extends into an affected part from the intervertebral foramen mirror, the end is inserted into a working channel of the intervertebral foramen mirror, the connecting rod 2 is inserted into the sleeve rod 3 from the other end of the working channel of the intervertebral foramen mirror, the fixing rod 6 is moved to a proper position, the fusion device body 5 is inserted between the two fixing rods 6, the fusion device body 5 is held by one hand, the handle 1 is rotated by the other hand, the threaded rod 12 is in threaded connection with the threaded groove 11 or the two half threaded grooves 13, finally the fixing cover 7 is sleeved on the tail end of the intervertebral foramen mirror, the intervertebral foramen mirror is inserted into the affected part, the fusion device is inserted into the lumbar intervertebral disc, when the connection between the fusion device body 5 and the connecting rod 2 needs to be disconnected, namely, the two inserting rods 16 are pressed by the hand, then the handle 1 is rotated by the other hand, the handle 1 drives the connecting rod, the threaded rod 12 is screwed out of the threaded groove 11 or the two half threaded grooves 13, then the handle 1 is pushed inwards, the fusion cage body 5 is separated from the fixed rod 6 by the handle 1 through the threaded rod 12, and the fusion cage body 5 is placed in.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.