CN107411853B

CN107411853B - Intervertebral fusion device

Info

Publication number: CN107411853B
Application number: CN201710193929.4A
Authority: CN
Inventors: 赵汝琛; 成朝福
Original assignee: Guangzhou Arnold Medical Device Co ltd
Current assignee: Guangzhou Arnold Medical Device Co ltd
Priority date: 2017-03-28
Filing date: 2017-03-28
Publication date: 2023-03-21
Anticipated expiration: 2037-03-28
Also published as: CN107411853A

Abstract

The invention relates to an interbody fusion cage, which comprises a fusion cage body, a driving block and a first supporting block. The driving block is arranged on the side of the fusion device body and is in sliding fit with the fusion device body in the first direction, and the driving block is provided with a first guide sliding groove or a first guide sliding block which is obliquely arranged relative to the first direction. The first supporting block is provided with a second guide sliding block matched with the first guide sliding groove or a second guide sliding groove matched with the first guide sliding block, and the first supporting block is in sliding fit with the fusion device body in the second direction. Make the driving block remove for the fusion cage body, the first direction spout or the first direction slider of driving block and the slider or the spout of first supporting block remove each other, just corresponding first supporting block of drive moves on the second direction to alright in order to adjust the height of first supporting block protrusion in fusion cage body, in order to be adapted to the patient of different intervertebral height.

Description

Intervertebral fusion device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an interbody fusion cage.

Background

The interbody fusion cage is used for being implanted between damaged vertebral bodies and has the crawling replacement effect on bone tissues, so that the damaged vertebral bodies can be repaired. The height of traditional interbody fusion cage is fixed, and the interbody height of human body varies from person to person, just can't adapt to different patients' interbody height through the height that adjusts the fusion cage after implanting the fusion cage body, and the commonality of so traditional interbody fusion cage is relatively poor.

Disclosure of Invention

Based on this, it is necessary to overcome the defects in the prior art, and provide an intervertebral fusion cage, which can adjust the height of the support surface of the intervertebral fusion cage according to the adaptability of the height of the human body, and has strong universality.

The technical scheme is as follows: an intervertebral cage comprising: a fusion cage body; the driving block is arranged on the side part of the fusion device body and is in sliding fit with the fusion device body in a first direction, and the driving block is provided with a first guide sliding chute or a first guide sliding block which is obliquely arranged relative to the first direction; and the first supporting block is provided with a second guide sliding block matched with the first guide sliding groove or a second guide sliding groove matched with the first guide sliding block, and the first supporting block is in sliding fit with the fusion device body in the second direction.

Foretell interbody fusion cage makes the driving block remove for the fusion cage body, and the first direction spout or the first direction slider of driving block and the slider or the spout of first supporting block move each other, just corresponding drive first supporting block moves on the second direction to alright in order to adjust the height of first supporting block protrusion in fusion cage body, in order to be adapted to the patient of different intervertebral height.

In one embodiment, the interbody cage further comprises a second support block, and the first support block and the second support block are located on the same side of the cage body; the driving block is provided with a third guide sliding groove or a third guide sliding block which is obliquely arranged relative to the first direction, and the arrangement direction of the third guide sliding groove or the third guide sliding block is opposite to that of the first guide sliding groove or the first guide sliding block; the second supporting block is provided with a fourth guide sliding block matched with the third guide sliding groove or a fourth guide sliding groove matched with the third guide sliding block, and the second supporting block is in sliding fit with the fusion device body in the second direction. So, when the first supporting shoe of drive block drive goes up and down to move, can drive the second supporting shoe and go up and down to move, and first supporting shoe and second supporting shoe go up and down opposite direction, can realize respectively and stretch out outside the height that increases the integration ware body from the upper and lower both ends of integration ware body in step.

In one embodiment, the third guide chute or the third guide slider is disposed in a direction symmetrical to the direction in which the first guide chute or the first guide slider is disposed with respect to the first direction. Therefore, after the driving block drives the first supporting block and the second supporting block to move, the first supporting block and the second supporting block are lifted synchronously and have the same height.

In one embodiment, the first supporting block comprises a first panel, a first side plate and a first limiting plate, the first side plate and the first limiting plate are arranged at intervals and connected with the first panel, the side face, facing the first limiting plate, of the first side plate is provided with the second guide slider, and the driving block is arranged in the interval between the first side plate and the first limiting plate and can move in the interval between the first side plate and the first limiting plate. So, the drive block removes the in-process, and the drive block drives first curb plate lift and removes to can realize that first curb plate is for the terminal surface lift and remove of fusion ware body, thereby can adjust the height of interbody fusion ware, be adapted to the patient of different interbody heights better. In addition, the second direction slider and the spout phase separation can be avoided to first limiting plate, and interbody fusion cage can normal use for a long time like this. In addition, the second supporting block comprises a second panel, a second side plate and a second limiting plate, the second side plate and the second limiting plate are arranged at intervals and are connected with the second panel, the side face, facing the second limiting plate, of the second side plate is provided with the fourth guide sliding block, and the driving block is arranged in the interval between the second side plate and the second limiting plate and can move in the interval between the second side plate and the second limiting plate.

In one embodiment, a first groove adapted to the first panel is provided on an end surface of the fusion cage body facing the first panel. So, before implanting interbody fusion cage, make first panel be arranged in first recess, after implanting interbody fusion cage, remove the drive block for first panel lift action, highly adapt to the patient of different interbody heights with the height that changes interbody fusion cage, like this first panel implants the in-process, interbody fusion cage atress is less, is convenient for implant the patient with interbody fusion cage internal, can reduce the damage of implanting the in-process and causing. In addition, a second groove matched with the second panel is arranged on the end face, facing the second panel, of the fusion device body.

In one embodiment, the fusion cage body comprises a front end head, a rear end head, a first elastic sheet and more than one movable block, wherein the front end head, the movable blocks and the rear end head are sequentially connected in series, and the front end head is rotatably connected with the movable blocks, the adjacent movable blocks are rotatably connected with each other and the rear end head is rotatably connected with each other; the front end, the rear end and the movable block are respectively provided with a mounting hole matched with the first elastic sheet, the first elastic sheet penetrates through the mounting holes, and the first elastic sheet is bent to be arc-shaped in a natural state. The first elastic sheet is bent into an arc shape in a natural state and can be straightened after being stressed, the rear end of the interbody fusion cage is clamped or connected, the first elastic sheet is straightened to enable the front end, the movable blocks and the rear end to be pulled into a straight line, then the rear end is slowly pushed, the front end of the interbody fusion cage firstly enters a vertebral body, and meanwhile, the front end, the movable blocks and the rear end are rotatably connected with one another, the front end, the movable blocks and the rear end turn around one section by one section under the action of the bending force of the first elastic sheet and finally are wound on the vertebral body, so that the front end of the interbody fusion cage enters the vertebral body from one side and is wound on the other side of the vertebral body, both sides of the vertebral body are supported, the interbody fusion cage can provide enough supporting surfaces, and stress balance between the vertebral bodies is guaranteed.

In one embodiment, the interbody fusion cage further comprises a second elastic sheet, the first supporting blocks and the driving blocks are multiple, the first supporting blocks correspond to the driving blocks one to one, the driving blocks are connected through the second elastic sheet, the first supporting blocks are arranged on the same side of the front end, the movable block and the rear end, and the second elastic sheet is located on the inner side of the first elastic sheet, which is bent and curved. In this embodiment, the second elastic sheet is a spring sheet, and may be of other elastic strip-shaped or sheet-shaped structures. The second elastic piece is bent and deformed along with the first elastic piece under the action of the elastic force of the first elastic piece, so that the first supporting block can be more tightly arranged in the fusion device body; in addition, the second elastic sheet is pushed to move, so that the driving block can be driven to move together, and the lifting action of the first supporting block is realized. It is understood that the interbody cage may further include a plurality of second support blocks, the second support blocks corresponding to the driving blocks one by one.

In one embodiment, the interbody fusion cage further comprises a moving block and a screw rod, wherein a movable groove is formed in the side portion of the rear end, the moving block can move along the movable groove, the moving block is connected with the second elastic piece, the screw rod is rotatably connected with the rear end, the moving block is provided with a threaded hole matched with the screw rod, and the screw rod is arranged in the threaded hole. Therefore, after the driving screw rod rotates, the screw rod enables the moving block to move along the movable groove, and the moving block correspondingly pushes and pulls the second elastic piece. Optionally, the end of the screw rod is provided with a driving hole with a triangular, rectangular, pentagonal or hexagonal cross section, and a corresponding driving piece is inserted into the driving hole and is rotated, so that the screw rod can be rotated, and the operation is convenient.

In one embodiment, the screw is provided with an annular groove arranged around the side wall of the screw, and the movable groove is provided with a limit flange arranged in the annular groove. Therefore, the limiting flange is arranged in the annular groove, so that the limiting flange can play a role of limiting the screw to move along the movable groove, and the screw can only rotate in the movable groove.

In one embodiment, the end of the first elastic piece is detachably connected with the front end head.

Drawings

FIG. 1 is a schematic view of an intervertebral cage according to an embodiment of the invention;

FIG. 2 is a first schematic view illustrating a first support block and a second support block of the intervertebral cage according to an embodiment of the present invention after being lifted;

FIG. 3 is a second schematic view of the intervertebral cage according to the embodiment of the present invention after the first support block and the second support block are lifted;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a schematic structural diagram of the driving block and the second elastic sheet according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of the first support block according to the embodiment of the present invention;

FIG. 7 is a schematic view of a second support block according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a front tip according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a movable block according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a rear tip according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a moving block according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a screw according to an embodiment of the present invention.

10. Fuse ware body, 11, first recess, 12, the second recess, 13, the front end, 14, the movable block, 15, the rear end, 151, the activity groove, 152, the limit flange, 16, the first elastic sheet, 17, the mounting hole, 20, the drive block, 21, the first direction spout, 22, the third direction spout, 30, first supporting block, 31, the second direction slider, 32, the first panel, 33, the first curb plate, 34, the first limiting plate, 40, the second supporting block, 41, the fourth direction slider, 42, the second panel, 43, the second curb plate, 44, the second limiting plate, 50, the second elastic sheet, 60, the movable block, 61, the screw hole, 70, the screw rod, 71, the drive hole, 72, the ring channel.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It should be noted that, when one element is referred to as being "connected" to another element in the above embodiments, the element may be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected to" another element, there are no intervening elements present.

As shown in fig. 1 to 4, 5 and 6, an intervertebral cage includes a cage body 10, a driving block 20 and a first supporting block 30. The driving block 20 is disposed at a side portion of the fusion cage body 10 and is in sliding fit with the fusion cage body 10 in a first direction, and the driving block 20 is provided with a first guide sliding groove 21 or a first guide sliding block disposed obliquely with respect to the first direction. The first direction is generally a direction from the center point of the tail end of the fusion cage body 10 to the center point of the head of the fusion cage body 10 when the fusion cage body 10 is in a straight state, or a direction parallel or approximately parallel to the horizontal plane when the fusion cage body 10 is normally implanted into a vertebral body. First supporting block 30 be equipped with first direction spout 21 matched with second direction slider 31 or with first direction slider matched with second direction spout, just first supporting block 30 with fuse ware body 10 sliding fit in the second direction. Wherein the second direction is generally perpendicular or approximately perpendicular to the first direction, or the second direction is parallel or approximately parallel to the vertical direction when the fusion device body 10 is normally implanted into a vertebral body.

In the intervertebral fusion cage, the driving block 20 moves relative to the fusion cage body 10, and the first guide sliding groove 21 or the first guide sliding block of the driving block 20 and the sliding block or sliding groove of the first supporting block 30 move relative to each other, so that the first supporting block 30 is correspondingly driven to move in the first direction, and therefore the height of the first supporting block 30 protruding out of the fusion cage body 10 can be adjusted to adapt to patients with different intervertebral heights.

In this embodiment, referring to fig. 1 and 7, the intervertebral cage further includes a second support block 40. The first support block 30 and the second support block 40 are located on the same side of the fusion cage body 10. The driving block 20 is provided with a third guiding runner 22 or a third guiding slider arranged obliquely with respect to the first direction. The third guide sliding groove 22 or the third guide sliding block is arranged in the direction opposite to the direction in which the first guide sliding groove 21 or the first guide sliding block is arranged. The second supporting block 40 is provided with a fourth guide sliding block 41 matched with the third guide sliding groove 22 or a fourth guide sliding groove matched with the third guide sliding block, and the second supporting block 40 is in sliding fit with the fusion cage body 10 in the second direction. Thus, the driving block 20 can drive the second supporting block 40 to move up and down while driving the first supporting block 30 to move up and down, and the first supporting block 30 and the second supporting block 40 are opposite in lifting direction, so that the aim of respectively and synchronously extending out from the upper end and the lower end of the fusion cage body 10 to increase the height of the intervertebral fusion cage can be achieved.

Further, referring to fig. 5 again, the arrangement direction of the third guiding chute 22 or the third guiding slider and the arrangement direction of the first guiding chute 21 or the first guiding slider are symmetrically arranged with respect to the first direction. In this way, after the driving block 20 drives the first supporting block 30 and the second supporting block 40 to move, the heights of the first supporting block 30 and the second supporting block 40 which are lifted synchronously are the same.

In this embodiment, referring to fig. 6 and 7, the first supporting block 30 includes a first panel 32, a first side plate 33, and a first limiting plate 34. The first side plate 33 and the first limit plate 34 are arranged at intervals and connected with the first panel 32, the second guide slider 31 is arranged on the side surface of the first side plate 33 facing the first limit plate 34, and the driving block 20 is arranged in the interval between the first side plate 33 and the first limit plate 34 and can move in the interval between the first side plate 33 and the first limit plate 34. So, in the process that the driving block 20 moves, the driving block 20 drives the first side plate 33 to move up and down, and the first side plate 32 can move up and down relative to the end surface of the fusion cage body 10, so that the height of the intervertebral fusion cage can be adjusted, and the intervertebral fusion cage is better adapted to patients with different intervertebral heights. In addition, the first limiting plate 34 can avoid the second guide sliding block 31 from separating from the first guide sliding groove 21, so that the intervertebral fusion cage can be normally used for a long time. In addition, the second supporting block 40 includes a second panel 42, a second side plate 43 and a second limiting plate 44. The second side plate 43 and the second limit plate 44 are arranged at intervals and connected to the second panel 42, and the side of the second side plate 43 facing the second limit plate 44 is provided with the fourth guide slider 41. The driving block 20 is disposed in the space between the second side plate 43 and the second stopper plate 44 and is movable in the space between the second side plate 43 and the second stopper plate 44.

Further, referring to fig. 8 to 10, a first groove 11 adapted to the first panel 32 is disposed on an end surface of the fusion cage body 10 facing the first panel 32. Like this, before implanting the interbody fusion cage, make first panel 32 be located first recess 11, after implanting the interbody fusion cage, remove drive block 20 for first panel 32 lift action to the height that changes the interbody fusion cage adapts to the patient of different intervertebral height, and first panel 32 implants the in-process like this, and the interbody fusion cage atress is less, is convenient for implant the interbody fusion cage in the patient, can reduce the damage that causes in the implantation process. In addition, a second groove 12 adapted to the second panel 42 is provided on the end surface of the fusion cage body 10 facing the second panel 42. The principle is similar and is not described in detail. It can be understood that when a plurality of first and second support blocks 30 and 40 are provided at intervals on the cage body, a plurality of first and

second grooves

11 and 12 are provided at corresponding intervals on the end surface of the cage body 10.

In this embodiment, referring to fig. 1 to 4 and fig. 8 to 10, the fusion cage body 10 includes a front end 13, a rear end 15, a first elastic sheet 16, and more than one movable block 14. The front end head 13, the movable blocks 14 and the rear end head 15 are sequentially connected in series, and the front end head 13 is rotatably connected with the movable blocks 14, the adjacent movable blocks 14 and the movable blocks 14 are rotatably connected with the rear end head 15. And the front end head 13, the rear end head 15 and the movable block 14 are provided with mounting holes 17 matched with the first elastic sheet 16. The first elastic piece 16 penetrates through the mounting hole 17, and the first elastic piece 16 is bent into an arc shape in a natural state. The first elastic sheet 16 in this embodiment is a spring sheet, and may be other strip-shaped or sheet-shaped structures that have elasticity and are bent into an arc shape in a natural state, and are bent into an arc shape as shown in fig. 1 to 4 without being stressed. Because the first elastic sheet 16 is bent into an arc shape in a natural state, the first elastic sheet 16 can be straightened after being stressed to clamp or connect the rear end head 15 of the interbody fusion cage, the first elastic sheet 16 is straightened to enable the front end head 13, the movable blocks 14 and the rear end head 15 to be pulled into a straight line, then the rear end head 15 is pushed slowly, the front end head 13 of the interbody fusion cage firstly enters a vertebral body, and simultaneously, because the front end head 13, the movable blocks 14 and the rear end head 15 are rotationally connected with each other, the front end head 13, the movable blocks 14 and the rear end head 15 bend in a section under the action of the bending force of the first elastic sheet 16, and finally the interbody fusion cage is circled on the vertebral body, so that the front end head 13 of the interbody fusion cage enters the vertebral body from one side and finally circles to the other side of the vertebral body, both sides of the vertebral body are supported, and the interbody fusion cage can provide enough supporting surface to ensure the stress balance between the vertebral bodies. Optionally, the end of the first elastic piece 16 is detachably connected to the front end head 13. The first elastic piece 16 is prevented from separating from the front end head 13, so that the first elastic piece 16 and the front end head 13 are relatively fixed.

Further, referring to fig. 1 to 4, the intervertebral cage further includes a second elastic sheet 50. First supporting block 30 the drive block 20 is a plurality of, first supporting block 30 with the drive block 20 one-to-one correspondence, the drive block 20 passes through second flexure strip 50 links to each other, preceding end 13 the movable block 14 same one side of back end 15 all is equipped with first supporting block 30, just second flexure strip 50 is located the bending and is curved the inboard of first flexure strip 16. In this embodiment, the second elastic sheet 50 is a spring sheet, and may be other strip-shaped or sheet-shaped structures with elasticity. The second elastic piece 50 can enable the first supporting block 30 to be more tightly arranged in the fusion cage body 10 along with the bending deformation of the first elastic piece 16 under the elastic force action of the first elastic piece 16; in addition, the second elastic piece 50 is pushed to move, so that the driving block 20 can be driven to move together, and the lifting action of the first supporting block 30 is realized. It is understood that the interbody cage may further include a plurality of second support blocks 40, and the second support blocks 40 correspond to the driving blocks 20 one by one.

Further, referring to fig. 11 and 12, the interbody cage further includes a traveling block 60 and a threaded rod 70. The side of the rear end head 15 is provided with a movable groove 151. The moving block 60 can move along the moving groove 151, and the moving block 60 is connected to the second elastic piece 50. The screw rod 70 is rotatably connected with the rear end head 15, the moving block 60 is provided with a threaded hole 61 matched with the screw rod 70, and the screw rod 70 is arranged in the threaded hole 61. When the driving screw 70 is rotated, the screw 70 moves the moving block 60 along the moving groove 151, and the moving block 60 pushes and pulls the second elastic piece 50 accordingly. Alternatively, the end of the screw 70 is provided with a driving hole 71 having a triangular, rectangular, pentagonal or hexagonal cross section, and a corresponding driving member is inserted into the driving hole 71 and rotated, so that the screw 70 can be rotated, which is convenient to operate.

Further, the screw 70 is provided with an annular groove 72 disposed around a side wall thereof, and the movable groove 151 is provided therein with a position-limiting flange 152, the position-limiting flange 152 being disposed in the annular groove 72. In this way, since the position-limiting flange 152 is disposed in the annular groove 72, the position-limiting flange 152 can play a role of limiting the movement of the screw 70 along the movable groove 151, so that the screw 70 can only rotate in the movable groove 151.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. An intervertebral cage, comprising:

the fusion cage comprises a fusion cage body, wherein the fusion cage body comprises a front end head, a rear end head, a first elastic sheet and more than one movable block, the front end head, the movable blocks and the rear end head are sequentially connected in series, and the front end head is rotatably connected with the movable blocks, the adjacent movable blocks and the rear end head; mounting holes matched with the first elastic pieces are formed in the front end head, the rear end head and the movable block, the first elastic pieces penetrate through the mounting holes, and the first elastic pieces are bent into an arc shape in a natural state;

the driving block is arranged on the side part of the fusion cage body and is in sliding fit with the fusion cage body in a first direction, and the driving block is provided with a first guide sliding chute or a first guide sliding block which is obliquely arranged relative to the first direction, wherein the first direction is a direction from the center point of the tail end of the fusion cage body to the center point of the head of the fusion cage body when the fusion cage body is in a straight state; and

first supporting block, first supporting block be equipped with first direction spout matched with second direction slider or with first direction slider matched with second direction spout, just first supporting block with fuse the ware body sliding fit in the second direction.

2. An intersomatic cage according to claim 1, further comprising a second support block, the first and second support blocks being located on the same side of the cage body; the driving block is provided with a third guide sliding groove or a third guide sliding block which is obliquely arranged relative to the first direction, and the arrangement direction of the third guide sliding groove or the third guide sliding block is opposite to that of the first guide sliding groove or the first guide sliding block; the second supporting block is provided with a fourth guide sliding block matched with the third guide sliding groove or a fourth guide sliding groove matched with the third guide sliding block, and the second supporting block is in sliding fit with the fusion device body in the second direction.

3. An intersomatic cage according to claim 2, characterized in that the third guide runner or the third guide slider is arranged symmetrically to the first guide runner or the first guide slider with respect to the first direction.

4. The interbody fusion cage of claim 1, wherein the first support block comprises a first panel, a first side plate and a first limit plate, the first side plate and the first limit plate are arranged at an interval and connected to the first panel, the second guide slider is arranged on the side of the first side plate facing the first limit plate, and the driving block is arranged in the interval between the first side plate and the first limit plate and can move in the interval between the first side plate and the first limit plate.

5. An intersomatic cage according to claim 4, characterized in that the end face of the cage body facing the first panel is provided with a first recess adapted to the first panel.

6. An intersomatic cage according to claim 1, wherein the first resilient tab is a leaf spring.

7. The intersomatic cage according to claim 1, further comprising a second elastic plate, wherein the first support blocks and the driving blocks are multiple, the first support blocks correspond to the driving blocks one to one, the driving blocks are connected through the second elastic plate, the first support blocks are arranged on the same side of the front end, the movable block and the rear end, and the second elastic plate is located on the inner side of the first elastic plate which is curved and curved.

8. The interbody fusion cage of claim 7, further comprising a moving block and a screw, wherein a movable groove is formed in a side portion of the rear end, the moving block can move along the movable groove, the moving block is connected with the second elastic piece, the screw is rotatably connected with the rear end, the moving block is provided with a threaded hole matched with the screw, and the screw is installed in the threaded hole.

9. An intersomatic cage according to claim 8, characterized in that the screw is provided with an annular groove arranged around its side wall, and in that the mobile groove is provided with a stop flange arranged therein.

10. An intersomatic cage according to claim 6, wherein the first plate end is removably connected to the forward tip.