TWI233347B - Supporting body structure to be placed between two vertebrae - Google Patents

Abstract

This invention is a kind of supporting body structure to be placed between two vertebrae which is suitable for indication of interbody fusion like the cervical vertebra, the thoracic vertebra, the lumbar vertebra or the like, including a long shaped frame body and another long shaped frame body set substantially in parallel at a predetermined altitude. The central parts of the long shaped frame body and another long shaped frame body are hollow shape and the central parts of the four sides of the long shaped frame body and another long shaped frame body are connecting with studs, thus helping make the space between both sides of the studs form another hollow shape and mutually penetrate the hollow shape. Observe the supporting body from its left, right sides and front, back sides, all the front parts present an I-shape structure. And the hollow parts could hold the self bone required for interbody fusion. By using the supporting body the volume required could be the least. After placing it between two human vertebrae, the biggest contacting area could be obtained to endure the pressure between the vertebrae and hold the most self bone, thus achieving the support and fusion between vertebrae.

Description

1233347 V. Description of the invention α) [Technical field to which the invention belongs] The present invention relates to a support structure, particularly a support structure suitable for the indications of interbody fusion surgery such as cervical, thoracic, lumbar, etc. This makes it possible to obtain the largest contact area, bear the pressure between the vertebral bodies, and accommodate the largest number of autogenous bones by using the minimum volume of the support system after being inserted between the vertebral bodies of the human body. The purpose of support and fusion between vertebral bodies. [Prior art]

According to the human body, the lumbar vertebrae (Lumbar) are divided into 5 sections. Its function is to support the human body for the purpose of bending. The lumbar vertebrae in each section have the most degradation and produce diseases (such as lower back pain, sciatica). (Laminar prolapse, spinal canal stenosis)) most often occur in sections 4-5 of the lumbar vertebral body, and section 5 of the lumbar vertebral body is connected to one of the recommended vertebral bodies, which also causes disease. Suffering is difficult to stand, affects his daily sitting and extreme pain.

Furthermore, in the lumbar vertebrae of each section of the human body, please refer to FIG. 1. Between the corresponding connecting surfaces of the upper lumbar vertebral body 10 and the lower lumbar vertebral body 12, there is an intervertebral disc 11, a normal intervertebral disc, respectively. 1 1 is in a state of anterior high and low between the upper and lower lumbar vertebral bodies 10, 12 and the intervertebral disc 11 is in the shape of a disc, in addition to having a certain height, it is further composed of a The core is composed of an outer ring (not shown), where the core is composed of a nuclear slurry (water content is about 90%), and the outer ring is composed of a fiber with nerve distribution inside. .

Page 5 1233347 Five invention descriptions (2) In this way, the above-mentioned so-called 'most place' in each section is the most degenerate in the lumbar vertebrae of the Xiji Association μ, giving birth to the left side of the lumbar vertebrae Problems occurred at 11 disease disks, that is, when the intervertebral discs between the connecting surfaces are naturally degraded, external force is injured, etc .; due to various factors (such as: the intervertebral disc (Shikou is the same as the leaking tire, its height Decreased and the outer ring = dangling south degree, causing the so-called slippage phenomenon, which is relatively causing the patient =). However, in the past ten years, degenerative lumbar surgery, the use of-two: vertebral iuslage The reason for this is that the physician recognizes that the degenerative lumbar spine disease comes from the retreat: the intervertebral disc 11 must be removed and then implanted with autologous bones, but one lumbar vertebral body 10 and 12 are fully integrated " usi0n ) Before, there must be: the support of the support 'to avoid the implanted autogenous bone ^ v broken due to the pressure between the vertebrae' and maintain the normal height between the vertebrae, and to maintain the fusion = fixed. Other vertebral bodies are currently on the market. There are two shapes of intervertebral support, a kind of cylindrical support (Cyl indr i cai) that is hollowed out, and the other one is hollow. Rectangular (rectangle) branch buildings, but the two are disadvantageous because of their structural relationship and cannot accommodate enough autogenous bone, μ and the contact area between the upper and lower lumbar vertebrae 10, 12 is not enough Large ... Questions such as "'The ideal wing body should be the one with the least metal and the largest: the contact area' so that it can accommodate more implanted autogenous bones and be able to withstand the pressure between the vertebrae ..." Therefore, the existing intervertebral support has its shortcomings in use, so the design of the present invention is designed to meet the two requirements of reality 1233347.

[Summary of the Invention] The Gu Department has the gas that the existing intervertebral support mentioned above has existed in use for a long time. Based on the actual needs of the market and users, the inventor has worked hard to research and experiment, and finally developed The design of the support structure of the present invention 'entering the two vertebral bodies' is designed, and the design of the present invention is mainly based on the I-shaped structure of the railroad track from its longitudinal section. Bachelor's class π; Force principle, so that it has the smallest volume, and can support the gravity of trains tens of thousands of times its weight. One of the objectives of this month is to design a support structure that has a simple structure and can effectively solve the traditional shortcomings. It is an indication suitable for interbody fusion of cervical, j, lumbar, etc. The main technology is to design a hollow body that allows one to fill more autogenous bones and another one: a hollowed out space, so that the chance of successful fusion between the upper and lower vertebral bodies is greatly increased, and With the design that the two side edges of one of the elongated frame and the other elongated frame are slightly curved, and the design that the front side of the elongated frame is slightly inclined downward toward the rear side, it can fully comply with The height of the normal intervertebral disc. 2 Therefore, afterwards, a maximum contact area can be obtained, and the pressure between the upper and lower vertebrae can be achieved, so as to achieve the purpose of complete fusion of the autogenous bone and the support. Another purpose of this month, The surface of the long frame and the other long frame of the 5 Xuanzhi building can be a zigzag shape or a micro-hole coating shape. The effect of the zigzag shape is Can hook the corresponding connection surface of the upper and lower vertebra To prevent the sliding movement of the micro-hole effect of the coating system

-----—---- —_ Page 7-~~ J 1233347

[Embodiment] The present invention is a "support structure for placing between two vertebrae", where 糸 I = for cervical, thoracic, lumbar, etc. interbody fusion surgery indications, please refer to Section 2 As shown in the figure, the branch structure 20 is formed by a long frame and two other long frames 22 corresponding to each other at a predetermined height, and the long frame 21 and the other long frame 22 The central part is a hollow 23 shape, and the central parts j of the four sides of the elongated frame body 21 and the other elongated frame body 22 are each connected to a column 25 so that the two sides of the columns 25 Another hollow shape is formed between them and penetrates with the hollow shape 23, so that the f support body 2 (U! Its left and right sides and its front and rear sides are viewed in four directions. It is an I-shaped, and the shape of the I-shaped exactly fits the anatomical shape of a normal intervertebral disc. Among them, the hollow σ of the I-shaped and the other 24 positions are used to accommodate the necessary spinal fusion. Body bone 40 'Please refer to Fig. 3.-In a preferred embodiment of the present invention, please refer to Fig. 3, its system The support body 20 is inserted into a side schematic diagram of the upper lumbar vertebral body 1 () corresponding to the lower lumbar vertebral body 12 and the connection surface, wherein the elongated frame 2 丨 front side 2 丨 the engineering system is slightly toward its rear side 2 1 2 Tilt downward to meet the normal height of the intervertebral disc 11 before, 1233347 V. Description of the invention (5) ~ posterior low state (as shown in Figure 1), meanwhile, the support body 2 〇 except in its hollow space 23 In addition to filling the autogenous bone 40, more autogenous bone 40 (as shown in Figs. 2 and 3) can be filled in the space of another hollow 24 on the two sides of the upright 25, so that The probability of success of the fusion between the upper and lower lumbar vertebral bodies 10 and 12 is greatly increased. In the preferred embodiment, please refer to FIG. 4, which is the branch body 20 Inserted in the front view between the corresponding connecting surfaces of the upper lumbar vertebra 丨 〇 and the lower lumbar vertebra 丨 2, wherein one of the elongated frame 2 1 2 side edge 2 1 3 and another elongated frame 2 2 The side edge 2 2 1 is slightly bent toward its corresponding surface to reduce its height, so as to conform to the two outer edges between the corresponding connecting surfaces of the upper and lower lumbar vertebral bodies 1 0 and 12 One of the slightly protruding portions 1 〇1, 1 2 1. In addition, please refer to FIG. 5, which is a plan view of the supporting body 20, wherein the four corners of the elongated frame body 21 and the other elongated frame body 22 are shown in FIG. 5. Departments 214 are respectively in a closed arc shape (because Figure 5 is a top view, the other long frame 2 2 cannot be seen in the figure), so that the support body 20 can be placed on the support. Convenience between the corresponding connection surfaces of the lumbar vertebral body 10 and the lower lumbar vertebral body 12, and through the surfaces of the elongated frame 21 and the other elongated frame 22, the upper and lower lumbar vertebrae 10, 1 A maximum contact area is obtained between the corresponding connecting surfaces of 2. Furthermore, 'the support body 20 is an insertion tool used to place the corresponding connecting surfaces of the upper lumbar vertebral body 10 and the lower lumbar vertebral body 12 and can be used with The pillars 25 of the support body 20 cooperate with each other without drilling holes, so as to avoid weakening the strength of the support body 20 structure, and at the same time, the placement position of the support body 20 can be controlled. In another preferred embodiment of the present invention, please refer to FIG. 6 and FIG. 7. The surfaces of the elongated frame body 21 and the other elongated frame body 22 of the support body 20 are

1233347 V. Description of the invention (6) It can be a zigzag pattern 218, 228, or a micro-hole · painting 219, 22 9 pattern, respectively. The function of the zigzag pattern 218, 228 is to hook on it. The corresponding connection surface between the lumbar vertebral body 10 and the lower lumbar vertebral body 丨 2 to avoid sliding, and the role of the microcavity coating 2 1 9 and 2 2 9 is to allow the autogenous bone 40 to grow into the microcavity coating. Installed in 219, 229. In each of the embodiments of the present invention, the volume of the support body 20 can be changed in size in order to allow a physician to insert it from the back or side of the upper and lower lumbar vertebral bodies 10, 12. In addition, the manufacturing material of the support body 20 is mainly titanium, and a material such as a plastic steel that conforms to strength can also be used. Based on the above-mentioned components, it is clear that when the intervertebral disc 11 between the upper and lower lumbar vertebrae 10, 12 degenerates, the physician must remove it and then implant it with the autogenous bone 40, but Before the upper and lower lumbar vertebral bodies 10 and 12 are completely fused, the support body 20 must be placed between the upper and lower lumbar vertebral bodies 10 and 12 behind or from the side, and through the support The body 2 〇 avoids the implanted autogenous bone 40 being crushed by the pressure between the upper and lower lumbar vertebral bodies 10 and 12 and maintains its normal degree, and maintains the upper and lower lumbar vertebrae before fusion 1Q, 12 stable. Therefore, the most significant feature of the present invention is that the support body 20 is designed to have a space for perforation 23 and another perforation 24 which can be filled with more autogenous bone 40, so that the upper lumbar vertebral body 10 and lower lumbar vertebral body 丨The probability of successful integration between the two greatly increases', and by the long frame 21 of the support body 20 and the two side edges 2 1 of the long frame 22 and the long frame 2 1 3, 22 1 have a slightly curved design, and the long frame Body 2 1 The front side 2 11 is designed to be slightly inclined towards the rear side 2 1 2 and can fully meet the normal

Page 10, 1233347, description of the invention (7) '---------_ The requirements of the upper and lower lumbar vertebrae 10 and 12 can obtain a maximum contact area and bear the upper and lower lumbar vertebrae. The pressure between 丨 〇 and J 2 further achieves the purpose of complete fusion of the autogenous bone 40 and the support body 20. Therefore, the design of the present invention not only has the advantages of simple structure, but also can effectively solve the disadvantages caused by the tradition. + According to the above, it is only the best specific κ embodiment of the present invention, but the structural features of the present invention are not limited to this. Anyone who is familiar with the art is in the field of the present invention. Changes or modifications should be included in the scope of this patent.

Page 11

1233347 Schematic illustrations Schematic illustrations. Figure 1 is a partial side view of the relationship between the lumbar vertebral body and the intervertebral disc in the human body. Figure 2 is a schematic three-dimensional appearance of the support body of the present invention. Figure 3 is a support body of the present invention inserted into the lumbar spine. Side view of the body and implantation of autologous bone; Figure 4 is a schematic front view of the support of the present invention inserted into the lumbar interbody; Figure 5 is a top view of the support of the present invention; Figure 6 is a support of the present invention Schematic diagram of the front side of another preferred embodiment——, FIG. 7 is a representative symbol of the main part of the schematic diagram of the front side of another preferred embodiment of the support body of the present invention: upper lumbar vertebral body… 10 intervertebral disc… 1 1 lower lumbar vertebrae Body…… 12 Branch body…… 20 Long frame…… 21 Another long frame… ••• 22 Hollow…… 23 Another hollow…… 24 Posts… 25 Front side… 21 1 Back side… … 212 Two side edges… 213 221 Protrusions… 101 、 121 Four corners… 214 Teeth shape… 218 > 228 Micro-hole coating… 219 229 Autogenous bone… ••• 40

Page 12

Claims (1)

1233347 Sixth, the scope of the patent application: a support structure of m, cervical spine, thoracic spine, lumbar spine, etc., which is applicable to -long frame == :: 彳 2 indications, including ... Body, the other j ::: bit:-hollowed out; empty, and with-predetermined high yield slightly A ^ Kai ;: the central part of the frame = a hollowed out, and flat in $ # $, and flat The central part of the four sides of each other long frame is arranged corresponding to the long frame and formed between the two sides of the columns-another-hollow two sides and its front and rear sides; two The necessary emptying parts from the left and right are used to accommodate the autogenous bones of the spine fusion to achieve the support and fusion between the vertebral bodies. Lou Λ, / Shen ΛSpecial perimeter of the long frame used to insert the intervertebral body as described in item 1 is tilted slightly downward toward the back side to hunt to fit a normal intervertebral disc. status. Supporting body *: Application: Supporting body for placing between two vertebrae as described in item 1 of the patent scope. The two side edges of the elongated frame and the other-the elongated system are slightly bent toward their corresponding faces to reduce their height; = the two outer edges between the corresponding connecting faces of the upper and lower vertebrae are slightly protruded. 1 .: Application as described in Patent Λ / Circumstance 1 ☆ The branch inserted between two vertebrae = limb π structure, where the four corners of the long frame and the other long frame are respectively one Inner arc angle shape, to facilitate the convenience of the support body between the upper vertebral body and the lower vertebral body connecting surface, and through the surface of the elongated frame and another elongated frame, Between the corresponding connecting surfaces of the upper and lower vertebrae Page 13 1233347 6. Scope of patent application To obtain a maximum contact area. 5. The support structure for inserting between two vertebrae as described in item 1 of the scope of the patent application, wherein the pillars of the support can just correspond to the ones that are placed in the upper and lower vertebrae. The tools between the connecting surfaces are matched without the need to drill holes to avoid weakening the strength of the support structure, and at the same time, the placement position of the support can be controlled. 6. The support structure for placing between two vertebrae as described in item 1 of the scope of the patent application, wherein the surface of the elongated frame and the other elongated frame can be in a zigzag shape, respectively. Its function is to hook the corresponding connection surface of the upper vertebra and the lower vertebra to prevent it from sliding. 7. The support structure for inserting between two vertebrae as described in item 1 of the scope of the patent application, wherein the surface of the elongated frame and the other elongated frame can be coated with a micro-hole respectively. The shape of the device is to allow the autogenous bone to grow into the micro-hole coating. 8. The support structure for placing between two vertebrae as described in item 1 of the scope of the patent application, wherein the manufacturing material of the support is mainly titanium. 9. The support structure for inserting between two vertebrae as described in item 1 of the scope of the patent application, wherein the support is made of a plastic steel material that meets the strength. Page 14