TWM597117U - Intervertebral cage - Google Patents

Abstract

An intervertebral cage for implanting between two adjacent vertebral bodies, comprises a cylinder base. The base includes an upper surface, a lower surface and an inner peripheral surface. The upper surface approaches to one of the vertebral bodies. The lower surface approaches to the other vertebral body. The inner peripheral surface defines a vertical through hole and forms an inner reticulated framework structure. The inner reticulated framework structure defines plural inner channels communicating the vertical through hole. The inner channels are suitable for the vertebral bodies’ growth therein by increasing contact.

Description

Intervertebral support device

The present invention relates to a support device, especially an intervertebral support device.

For humans, the vertebrae have multiple vertebral bodies, and an elastic tissue is used as a medium between two adjacent vertebral bodies to support the vertebral bodies and enable the vertebral bodies to move relatively smoothly. However, under long-term running-in, when the elastic tissue degenerates into a shape change and cannot further support the vertebral bodies, it will cause the vertebral bodies to collapse. Therefore, there are currently a variety of support devices that can replace the elastic tissue between the vertebral bodies and can support the vertebral bodies. However, although these support devices can achieve the support effect, the effect of stabilizing the vertebral body after bone fusion is still limited. Therefore, how to improve the stability of the vertebral body after bone fusion is an urgent problem to be overcome.

Therefore, the purpose of the present invention is to provide an intervertebral support device that supports the vertebral body and can enhance the stabilizing effect of the vertebral body after bone fusion.

Therefore, the novel intervertebral support device is suitable for being fixed between two adjacent vertebral bodies of a spine. The intervertebral support device includes: a base in a ring shape, and including an upper surface, a lower surface and an inner surrounding surface . The upper surface is adjacent to one of the vertebral bodies. The lower surface is opposite to the upper surface and adjacent to the other of the vertebral bodies. The inner peripheral mask has a longitudinal through hole extending from the upper surface to the lower surface, and an inner mesh structure surrounding at least a portion of the longitudinal through hole and communicating with the longitudinal through hole, and the inner mesh structure defines A plurality of internal channels are provided for the vertebral bodies extending in the longitudinal through hole to further extend, thereby increasing the contact area.

In some embodiments, the inner circumferential surface is recessed away from the longitudinal through hole, and defines an inner portion communicating with the longitudinal through hole.

In some implementations, the inner mask has an upper face adjacent to the upper surface and no holes formed, a lower face adjacent to the lower surface and no holes formed, and two opposite end edges respectively connecting the upper face and The middle face of the lower face, the upper face, the lower face, and the middle face together define the longitudinal through hole, and the middle face has the inner mesh structure.

In some embodiments, the upper surface has an upper grid structure surrounding the longitudinal through holes, and the upper grid structure defines a plurality of upper channels that communicate with the inner channels; the lower surface has a surrounding circumferential holes The lower grid structure, and the lower grid structure defines a plurality of lower channels connected to the inner channels.

In some embodiments, the base further includes an outer surrounding surface surrounding the outer side of the inner surrounding surface, the outer surrounding surface having a front side portion and a rear side portion spaced apart in a width direction, the The front side portion has a front mesh structure, and the front mesh structure defines a plurality of front channels that communicate with the inner channels; the rear side portion has a rear mesh structure, and the rear mesh structure defines a plurality of The rear channel connecting the internal channels.

In some embodiments, the front side portion also has a front rib structure extending through the front mesh structure and along a length direction; the rear side portion also has a front rib structure extending through the rear mesh structure and along the Rear rib structure in the length direction.

In some embodiments, the front side portion also has a front lateral through hole that penetrates the front rib structure and communicates with the longitudinal through hole along the width direction; the rear side portion also has a through lateral rib structure and along the The width direction communicates with the rear transverse through hole of the longitudinal through hole.

In some embodiments, the outer circumferential surface further has an insertion face and a stressed face spaced apart in a longitudinal direction, the insertion face is arc-shaped, and two opposite side edges respectively connect the front side faces with The rear side portion, the insertion surface defines at least one front guide groove located adjacent to the connection with the front side portion, the front guide groove is used to guide tissue fluid; the stressed surface portion defines two spaced apart in the width direction Grooves, which are used for holding by a clamp.

In some embodiments, the intervertebral support device further includes a guide body including a plurality of upper guide portions arranged on the upper surface and arranged along the length direction, and a plurality of guide portions arranged on the lower surface The surface and the lower guide portions arranged along the length direction, each upper guide portion has an upper guide inclined surface extending obliquely from the upper surface toward the stressed face direction, and two opposite end edges are respectively connected to the upper The guide slope and the upper surface are perpendicular to the upper stop plane of the upper surface; each lower guide portion has a lower guide slope extending obliquely from the lower surface toward the force-bearing face, and one opposite end The edges are respectively connected to the lower guiding slope and the lower surface and are perpendicular to the lower stop plane of the lower surface.

In some embodiments, the intervertebral support device further includes a support body including at least one upper support portion that protrudes from the upper surface and can contact the vertebral body located above, and at least A lower support portion protruding from the lower surface and capable of contacting the lower vertebral body.

The effect of the present invention is that the intervertebral support device provides the accommodating bone powder through the longitudinal through hole defined by the base as the main growth space of the vertebral bodies, and then provides the vertebrae through the internal mesh structure The body has enough space for growth, so that when the vertebral bodies are completed with bone fusion, a stronger stabilizing effect is achieved by increasing the increased volume. In addition, as the vertebral bodies extend into the internal channels formed by the internal mesh structure, the contact area with the intervertebral support device is increased, thereby increasing the strength of the connection between the two and making the intervertebral support The device can support the vertebral bodies, and the vertebral bodies can stably grow in the intervertebral support device. On the other hand, the upper face portion and the lower face portion are respectively provided on two opposite sides of the inner mesh structure without forming a channel, thereby ensuring that the inner surrounding surface has sufficient structural strength to support the vertebral bodies. In contrast, through the insertion face, the stressed face, the anterior rib structure, and the posterior rib structure are connected to each other and do not form a large number of channels, whereby the outer surrounding surface has a certain degree of supporting force to support the vertebral bodies Corresponding parts.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same number.

1 to 3, a first embodiment of the novel intervertebral support device 100 is suitable for being fixed between two adjacent vertebral bodies of a spine 9, the intervertebral support device 100 includes a base 1, and一导体2。 A guide 2. In this embodiment, the spine 9 includes multiple cervical vertebral bodies 91 and multiple lumbar vertebral bodies 92. In this embodiment, the cervical vertebral body 91 is used as an example. The intervertebral support device 100 is used to fix between two adjacent cervical vertebral bodies 91. For convenience of subsequent description, the cervical vertebral bodies 91 are named an upper cervical vertebral body 91A and a lower cervical vertebral body 91B, respectively.

Referring to FIGS. 3 and 4, the base 1 has a ring shape and includes an upper surface 11, a lower surface 12, an inner surrounding surface 13 and an outer surrounding surface 14. In this embodiment, the upper surface 11 is adjacent to the upper cervical vertebral body 91A, and has an upper mesh structure 111, and the upper mesh structure 111 defines a plurality of upper channels 112. The inferior surface 12 is adjacent to the inferior cervical vertebral body 91B, and has a lower grid structure 121, and the lower grid structure 121 defines a plurality of lower channels 122, wherein the upper channels 112 and the lower channels 122 communicate with each other .

Referring to FIGS. 2, 3 and 5, the inner surrounding surface 13 extends downward from the upper surface 11 to the lower surface 12. Specifically, the inner surrounding surface 13 has an upper surface 131 adjacent to the upper surface 11 1. A lower surface portion 132 adjacent to the lower surface 12, and an opposite end edge connecting the upper surface portion 131 and the intermediate surface portion 133 of the lower surface portion 132, and the upper surface portion 131, the lower surface portion 132, and the intermediate surface portion 133 are common A longitudinal through hole 134 is defined, that is to say, the longitudinal through hole 134 extends from the upper surface 11 to the lower surface 12, an upper opening 137 of the longitudinal through hole 134 is surrounded by the upper mesh structure 111 and is adjacent to In the upper cervical vertebral body 91A, the lower opening 138 of the longitudinal through hole 134 is surrounded by the lower mesh structure 121 and is adjacent to the lower cervical vertebral body 91B. In addition, the middle surface 133 is recessed toward the outer surrounding surface 14 compared to the upper surface 131 and the lower surface 132, thereby defining an inner portion 139 surrounding the longitudinal through hole 134. Moreover, the middle surface 133 has an inner mesh structure 135 surrounding at least a portion of the longitudinal through hole 134 and connecting the longitudinal through hole 134 and the inner portion 139, wherein the inner mesh structure 135 defines a plurality of inner channels 136. In this embodiment, the inner mesh structure 135 does not completely surround the longitudinal through hole 134, but the area of the inner mesh structure 135 surrounding the longitudinal through hole 134 can be adjusted according to actual needs, and is not based on this implementation Examples are limited. In addition, in this embodiment, the upper face 131 and the lower face 132 also form a mesh structure, and are connected to the inner mesh structure 135, of course, the upper face 131 and the lower face 132 may also be The wall surface forming the hole. In particular, the inner channels 136 communicate with the upper channels 112 and the lower channels 122. Thereby, as the upper cervical vertebral body 91A or the lower cervical vertebral body 91B grows along the upper opening 137 and the lower opening 138 into the longitudinal through hole 134, they can be further along the inner channels 136 extends, thereby achieving the purpose of increasing the contact area with the intervertebral support device 100, and increasing the space for the growth of the bone tissue, which will increase the volume after bone fusion and improve the stability of the overall spine 9. Not only that, the upper cervical vertebral body 91A can also extend into the upper channels 112 and then grow into the inner channels 136. The lower cervical vertebral body 91B can also extend into the lower channels 122 and then grow into the inner channels 136. Such staggered vertical and horizontal interlacing will achieve a more stable fixing effect.

Referring to FIGS. 3, 6 and 7, the outer surrounding surface 14 has a front side portion 141, a rear side portion 142, an insertion surface 143 and a stressed surface 144. Specifically, the front side portion 141 and the rear side portion 142 are spaced apart in a width direction D1, the insertion surface portion 143 and the stressed surface portion 144 are spaced apart in a longitudinal direction D2, and the two sides of the front side portion 141 The opposite end edges are respectively integrally connected to the side edges of the insertion face 143 and the stressed face 144 on the other side, and the two opposite end edges of the rear side face 142 are integrally connected to the other of the insertion face 143 and the stressed face 144, respectively. Side. In this embodiment, the front side portion 141 has a front mesh structure 145 extending along the length direction D2, wherein the front mesh structure 145 defines a plurality of front channels 148, and the front channels 148 are in communication The inner channels 136, the upper channels 112, and the lower channels 122, thereby defining an irregularly extending growth space, so that the upper cervical vertebral body 91A or the lower cervical vertebral body 91B can extend into the growing and injected bone meal Fusion to further improve the connection strength with the intervertebral support device 100. Furthermore, the rear side portion 142, like the front side portion 141, has a rear mesh structure 149 extending along the length direction D2, wherein the rear mesh structure 149 defines a plurality of rear channels 153, and the rear channels 153 communicates with the inner channels 136, the upper channels 112, and the lower channels 122. The posterior channels 153 can also provide growth of the upper cervical vertebral body 91A or the lower cervical vertebral body 91B.

2 and 7, the insertion surface 143 defines a plurality of guide grooves 154, the number of the guide grooves 154 is exemplified by six, in this embodiment, the three guide grooves 154 are a group of three, One set of guide grooves 154 is located near the connection between the insertion face 143 and the front side 141, and the other set of guide grooves 154 is located near the connection between the insertion face 143 and the rear side 142. Further, each A set of three guide grooves 154 are arranged at intervals along a height direction D3, and each guide groove 154 extends along the length direction D2, whereby the guide grooves 154 are used to guide the implant into the intervertebral support device 100 Either the upper cervical vertebral body 91A or the lower cervical vertebral body 91B can be prevented from being hindered by other surrounding tissues. A plurality of grooves 155 are formed on the force-bearing surface 144, and the grooves 155 can be penetrated by a clamping member, and the insertion of the grooves 155 by the clamping member can stably support the intervertebral The device 100 moves between the upper cervical vertebral body 91A and the lower cervical vertebral body 91B.

3 and 4, the guide body 2 specifically includes a plurality of upper guide portions 21 disposed on the upper surface 11 and a plurality of lower guide portions 22 disposed on the lower surface 12. Wherein, a part of the upper guides 21 is formed on the upper surface 11 adjacent to the circumferential side of the longitudinal through hole 134, and another part of the upper guides 21 is formed on the upper surface 11 adjacent to the The front side portion 141 and the upper surface 11 are adjacent to the rear side portion 142. Further, each upper guiding portion 21 has an upper guiding inclined surface 211 extending obliquely from the upper surface 11 toward the force receiving surface 144, and two opposite end edges connect the upper guiding inclined surface 211 and The upper surface 11 is perpendicular to the upper stop plane 212 of the upper surface 11. In addition, one part of the lower guides 22 is formed on the peripheral surface of the lower surface 12 adjacent to the longitudinal through hole 134, and another part of the lower guides 22 is formed on the lower surface 12 adjacent to the The front side portion 141 and the upper surface 11 are adjacent to the rear side portion 142. Further, each lower guide portion 22 has a lower guide slope 221 extending obliquely from the lower surface 12 toward the force-bearing face 144, and two opposite end edges respectively connect the lower guide slope 221 and the The lower surface 12 is perpendicular to the lower stop plane 222 of the lower surface 12. Thereby, when the intervertebral support device 100 is inserted between the upper cervical vertebral body 91A and the lower cervical vertebral body 91B, by the guidance of the upper guide slope 211 and the lower guide slope 221, This makes the intervertebral support device 100 easier to be introduced, and as the cervical vertebral bodies 91 pass through the corresponding upper guiding slope 211 or the corresponding lower guiding slope 221, they will be blocked by the corresponding upper The plane 212 or the corresponding lower stop plane 222 blocks, thereby avoiding displacement.

Referring to FIGS. 1 and 8, a second embodiment of the novel intervertebral support device 100 includes a base 1, a guide body 2, and a support body 3. The difference between the second embodiment and the first embodiment lies in their shapes, partial detailed structures, and applicable parts. Specifically, the intervertebral support device 100 of the second embodiment is applicable between two adjacent lumbar vertebral bodies 92. In this embodiment, an upper lumbar vertebral body 92A and a lower lumbar vertebral body 92B are respectively exemplified.

Referring to FIG. 1, FIG. 8 to FIG. 10, in this embodiment, the base 1 is elongated and extends along a length direction D2, and includes an upper surface 11, a lower surface 12, an inner surrounding surface 13 and a Outer peripheral surface 14. Wherein, the inner surrounding surface 13 has an upper face 131, a lower face 132, and a middle face 133, wherein the upper face 131 and the lower face 132 are not formed with holes but are solid faces in this embodiment, thereby increasing the The overall structural strength of the inner circumferential surface 13. Furthermore, the middle surface 133 is recessed toward the outer surrounding surface 14 in the same way as the first embodiment and defines an inner portion 139, thereby increasing the accommodating space of the longitudinal through-hole 134, so as to accommodate more To increase the connection strength between the upper lumbar vertebral body 92A, the lower lumbar vertebral body 92B and the intervertebral support device 100. In addition, the middle surface 133 also has an inner mesh structure 135 communicating with the inner portion 139, wherein the inner mesh structure 135 defines a plurality of inner channels 136 for extending into the longitudinal through holes 134 The upper lumbar vertebral body 92A and the lower lumbar vertebral body 92B can have room for further growth, thereby integrating with the intervertebral support device 100 to improve the connection strength between each other.

Referring to FIG. 8, FIG. 10 and FIG. 11, the outer peripheral surface 14 has a front side portion 141, a rear side portion 142, an insertion surface 143 and a stressed surface 144. The front side portion 141 has a front mesh structure 145, a front rib structure 146 extending along the length direction D2 and extending along the middle of the front mesh structure 145, and two spaced apart and penetrating the front rib structure 146 and The front lateral through hole 147 of the longitudinal through hole 134 communicates with the width direction D1. In this way, the front rib structure 146 divides the front grid structure 145 into upper and lower parts, and the front rib structure 146 can enhance the structural strength of the front side portion 141.

The rear side portion 142 is similar to the structure of the front side portion 141, and specifically has a rear mesh structure 149, a rear rib structure 151 extending along the length direction D2 and extending along the middle of the rear mesh structure 149, and two They are spaced apart from each other and penetrate the rear rib structure 151 and communicate with the rear lateral through hole 152 of the longitudinal through hole 134 along the width direction D1. Thereby, the posterior rib structure 151 divides the posterior mesh structure 149 into upper and lower parts, and through the posterior rib structure 151, the structural strength of the posterior side portion 142 can be enhanced to further support the upper cervical vertebral body 91A and the lower cervical vertebrae体91B.

Referring to FIGS. 8 and 11, the insertion face 143 is arc-shaped, thereby improving the smoothness of insertion between the lumbar vertebral bodies 92 and reducing the damage to the bone tissue caused by collision with the surrounding bone tissue. On the other hand, the force-bearing face 144 opposite to the insertion face 143 defines two grooves 155 spaced apart in the width direction D1, and the grooves 155 are used for inserting a clip (eg, clip) into the clip By holding the clip out of the anterior side portion 141 and the posterior side portion 142, the intervertebral support device 100 is ensured that it will not be affected by the structure of the clamp during the insertion process and affect the depth of insertion . In another aspect, the support body 3 includes a plurality of upper support portions 31 protruding from the upper surface 11 and capable of contacting the upper lumbar vertebral body 92A, and a plurality of support portions 31 protruding from the lower surface 12 and capable of contacting The lower support portion 32 is located on the lower lumbar vertebral body 92B. Wherein, the upper support portions 31 are formed on the upper surface 11 adjacent to the insertion surface 143, and the lower support portions 32 are formed on the lower surface 12 adjacent to the insertion surface 143, each upper support portion 31 and each The lower support portions 32 all have a pyramid shape, but are not limited to the pyramid shape, and the upper support portions 31 and the lower support portions 32 that are pointed to each other touch the upper lumbar vertebral body 92A and the The lower lumbar vertebral body 92B thereby increases the contact area between each other, thereby improving the reliability of fixation of the intervertebral support device 100.

8 and FIG. 11, in this embodiment, the upper guide portions 21 are respectively formed on two opposite sides of the longitudinal through hole 134 in the width direction D1, and the upper guide portions on each side 21 is arranged along the length direction D2, wherein each upper blocking plane 212 faces the force receiving surface 144, and each upper guide slope 211 faces away from the force receiving surface 144. In particular, each upper guiding slope 211 also has a grid structure, so that the upper guiding slopes 211 can not only guide the vertebral bodies but also provide enough space for the upper lumbar vertebral body 92A to grow . The structure and arrangement of the lower guides 22 are the same as those of the upper guides 21, and will not be repeated here.

Referring to FIGS. 12 and 13, a third embodiment of the intervertebral support device 100 of the present invention is substantially the same as the second embodiment. It also has a plurality of internal channels 136 and an internal portion 139 for These vertebral bodies grow. The main difference between the third embodiment and the second embodiment is as follows. In the third embodiment, the base 1 is pea-shaped, the front side portion 141 is convex outer curved surface, and the rear side portion 142 is inner Concave arc. In this embodiment, compared to the second embodiment, the guide body 2 is omitted, and only the support body 3 is retained, and the upper support portions 31 are formed on a part of the upper surface 11 and surround the Longitudinal through holes 134, the lower support portions 32 are formed in a part of the lower surface 12 and surround the longitudinal through holes 134, and the remaining part of the upper surface 11 is the upper grid structure 111, the lower surface 12 The remaining part is the lower mesh structure 121, thereby providing sufficient growth space for the lumbar vertebral bodies 92 (see FIG. 1).

Referring to FIGS. 14 and 15, a fourth embodiment of the intervertebral support device 100 of the present invention is substantially the same as the second embodiment, and also has an internal channel 136 for the growth of the vertebral bodies. The main difference between the fourth embodiment and the second embodiment is as follows. In this embodiment, the base 1 is elliptical, and the base 1 defines two longitudinal through holes 134. The longitudinal direction D2 is spaced apart. Furthermore, the anterior side portion 141 has a convex arc surface, and the posterior side portion 142 also has a convex arc surface. With the design of the arc surface, the intervertebral support device 100 can reduce the surrounding area during the insertion process. The destruction of bone tissue also reduces the chance of hooking to the nerve. In this embodiment, compared to the second embodiment, the guide body 2 is omitted, and only the support body 3 is retained. The upper support portions 31 are formed on a portion of the upper surface 11 and surround the Longitudinal through holes 134, the lower supporting portions 32 are formed on a part of the lower surface 12 and surround the longitudinal through holes 134, and the remaining part of the upper surface 11 is the upper grid structure 111, the lower surface 12 The remaining part of is the lower mesh structure 121, thereby providing enough growth space for the lumbar vertebral bodies 92.

In summary, the new intervertebral support device 100 uses the longitudinal through hole 134 defined by the base 1 as the main growth space of the vertebral bodies, and then provides the vertebral bodies through the internal mesh structure 135 There is enough space for growth, so that when the vertebral bodies are completed in bone fusion, the increased support volume is achieved by increasing the increased volume. In addition, as the vertebral bodies extend into the inner channels 136 formed by the inner mesh structure 135, the contact area with the intervertebral support device 100 is increased, thereby increasing the strength of the connection between the two and making the The intervertebral support device 100 can support the vertebral bodies, and the vertebral bodies can stably grow in the intervertebral support device 100. On the other hand, the upper surface 131 and the lower surface 132 are respectively provided on two opposite sides of the inner grid structure 135 without forming a channel, thereby ensuring that the inner surrounding surface 13 has sufficient structural strength to support the Wait for the vertebral body. In contrast, through the insertion face 143, the stressed face 144, the front rib structure 146, and the rear rib structure 151 are connected to each other without forming a large number of channels, thereby giving the outer surrounding surface 14 a certain degree of support Support the corresponding parts of the vertebral bodies. Therefore, it can really achieve the purpose of new cost.

However, the above are only examples of the new model, and the scope of implementation of the new model cannot be limited by this. Any simple equivalent changes and modifications made according to the patent application scope and patent specification content of the new model are still classified as Within the scope of this new patent.

100: Intervertebral support device 1: pedestal 11: upper surface 111: Upper grid structure 112: Upper channel 12: Lower surface 121: Lower grid structure 122: Lower channel 13: inner surface 131: Upper face 132: Lower part 133: Middle face 134: vertical through hole 135: Inner grid structure 136: Inner channel 137: Upper opening 138: Lower opening 139: Content Department 14: outer surface 141: Front side 142: Rear side 143: Insert face 144: Stressed face 145: front grid structure 146: Front rib structure 147: Front horizontal through hole 148: Front channel 149: Rear grid structure 151: Rear rib structure 152: Rear horizontal through hole 153: Rear channel 154: Guide groove 155: groove 2: Introducer 21: upper guide 211: Upper guide bevel 212: Upper stop plane 22: Lower guide 221: Lower guide bevel 222: Lower stop plane 3: support body 31: Upper support 32: Lower support 9: Spine 91: Cervical vertebral body 91A: Upper cervical spine 91B: Lower cervical vertebral body 92: Lumbar vertebral body 92A: Upper lumbar vertebral body 92B: Lower lumbar vertebral body D1: width direction D2: length direction D3: height direction

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a schematic diagram of the new intervertebral support device; FIG. 2 is an enlarged schematic diagram of FIG. 1; 3 is a perspective schematic view of a first embodiment of the new intervertebral support device; FIG. 4 is a schematic perspective view of FIG. 3 after being turned 90 degrees clockwise along the horizontal axis (D1); 5 is a perspective cross-sectional view taken along line V-V of FIG. 3; 6 is a perspective cross-sectional view taken along line VI-VI of FIG. 3; 7 is a schematic perspective view of FIG. 3 rotated 90 degrees clockwise along the longitudinal axis (D3); 8 is a perspective schematic view of a second embodiment of the new intervertebral support device; 9 is a perspective cross-sectional view taken along line IX-IX of FIG. 8; 10 is a perspective cross-sectional view taken along line X-X of FIG. 8; 11 is a schematic perspective view of FIG. 8 after being rotated 180 degrees along the longitudinal axis (D3); 12 is a schematic perspective view of a third embodiment of the new intervertebral support device; 13 is a perspective view of FIG. 12 after turning clockwise 90 degrees along the horizontal axis (D2) and rotating 90 degrees counterclockwise along the longitudinal axis (D3); 14 is a perspective schematic view of a fourth embodiment of the novel intervertebral support device; and 15 is a perspective view of FIG. 14 after being turned 180 degrees along the horizontal axis (D2).

100: Intervertebral support device

1: pedestal

11: upper surface

111: Upper grid structure

112: Upper channel

12: Lower surface

13: inner surface

134: vertical through hole

14: outer surface

141: Front side

142: Rear side

143: Insert face

144: Stressed face

145: front grid structure

148: Front channel

155: groove

2: Introducer

21: upper guide

211: Upper guide bevel

212: Upper stop plane

22: Lower guide

221: Lower guide bevel

222: Lower stop plane

D1: width direction

D2: length direction

D3: height direction

Claims (10)

An intervertebral support device is suitable for being fixed between two adjacent vertebral bodies of a spine. The intervertebral support device includes: A base is in a ring shape and includes An upper surface, adjacent to one of the vertebral bodies, A lower surface, opposite the upper surface and adjacent to the other of the vertebral bodies, and An inner circumferential surface having a longitudinal through hole extending from the upper surface to the lower surface, and an inner mesh structure surrounding at least a portion of the longitudinal through hole and communicating with the longitudinal through hole, and the inner mesh structure defines A plurality of internal channels are provided for the vertebral bodies extending in the longitudinal through hole to further extend, thereby increasing the contact area. The intervertebral support device according to claim 1, wherein the inner circumferential surface is recessed away from the longitudinal through hole and defines an inner portion communicating with the longitudinal through hole. The intervertebral support device according to claim 1, wherein the inner circumferential mask has an upper face portion adjacent to the upper surface and no hole formed, a lower face portion adjacent to the lower surface and no hole formed, and an opposite end The rim connects the upper face and the middle face of the lower face respectively. The upper face, the lower face and the middle face jointly define the longitudinal through hole, and the middle face has the inner mesh structure. The intervertebral support device of claim 1, wherein the upper surface has an upper grid structure surrounding the longitudinal through hole, and the upper grid structure defines a plurality of upper channels that communicate with the internal channels; the lower surface There is a lower grid structure surrounding the longitudinal through hole, and the lower grid structure defines a plurality of lower channels communicating with the inner channels. The intervertebral support device according to claim 1, wherein the base further includes an outer circumferential surface surrounding the outer side of the inner circumferential surface, the outer circumferential surface having a front side portion spaced apart in a width direction And a rear side portion, the front side portion has a front mesh structure, and the front mesh structure defines a plurality of front channels connecting the inner channels; the rear side portion has a rear mesh structure, and the rear The grid structure defines a plurality of rear channels connecting the internal channels. The intervertebral support device according to claim 5, wherein the anterior side portion further has an anterior rib structure extending through the anterior mesh structure and along a length direction; the posterior side portion also has an extending through the Rear grid structure and rear rib structure along the length direction. The intervertebral support device according to claim 6, wherein the anterior side portion further has an anterior lateral through hole penetrating the anterior rib structure and communicating with the longitudinal through hole along the width direction; the posterior side portion also has an A rear lateral through hole penetrating the rear rib structure and communicating with the longitudinal through hole in the width direction. The intervertebral support device according to claim 5, wherein the outer peripheral surface further has an insertion face and a stressed face spaced apart in a longitudinal direction, the insertion face is arc-shaped, and the opposite side edges are respectively Connecting the front side portion and the rear side portion, the insertion face defines at least one front guide groove located adjacent to the connection with the front side portion, the front guide groove is used for guiding tissue fluid; the stressed face defines two The grooves spaced apart in the width direction are used for clamping by a clamp. The intervertebral support device according to claim 8, further comprising a guide body including a plurality of upper guide portions arranged on the upper surface and arranged along the length direction, and a plurality of guide portions arranged on the lower surface The surface and the lower guide portions arranged along the length direction, each upper guide portion has an upper guide inclined surface extending obliquely from the upper surface toward the stressed face direction, and two opposite end edges are respectively connected to the upper The guide slope and the upper surface are perpendicular to the upper stop plane of the upper surface; each lower guide portion has a lower guide slope extending obliquely from the lower surface toward the force-bearing face, and one opposite end The edges are respectively connected to the lower guiding slope and the lower surface and are perpendicular to the lower stop plane of the lower surface. The intervertebral support device according to claim 1, further comprising a supporting body including at least one upper supporting portion protruding from the upper surface and capable of contacting the vertebral body located above, and at least A lower support portion protruding from the lower surface and capable of contacting the lower vertebral body.

Images