Intervertebral space matching combined fusion device

Abstract

The present application provides a kind of intervertebral space matching combined fusion device, comprising: fusion device and bag piece;Two bone accommodating grooves are provided on the top surface of fusion device;Two bone accommodating grooves have interval part;End insertion hole is provided on the insertion end of fusion device, interval part is provided with bag receiving hole, bag receiving hole is communicated with end insertion hole, bag receiving hole has two opposite penetration holes on hole wall;Each penetration hole extends along the width direction of the fusion device;Two penetration holes are communicated with bone accommodating groove respectively;Bag piece includes bag body and connecting head, bag body has hollow inner cavity, and connecting head is provided with joint part through hole;Bag piece is inserted into bag receiving hole through end insertion hole.The intervertebral space matching combined fusion device can control the volume of bone filler injection, effectively prevent bone filler leakage;The intervertebral space matching combined fusion device is used to restore the physiological height of diseased vertebral body.

Description

Technical Field

[0001] This invention relates to the field of implantable device technology, and in particular to a combination fusion device for intervertebral disc matching. Background Technology

[0002] Currently, in some spinal surgeries, interbody fusion cages are generally required to restore the physiological height of the diseased vertebrae. However, sometimes the interbody fusion cage cannot perfectly match the endplate when placed in the intervertebral space, necessitating the injection of bone filler. However, excessive injection of bone filler often leads to leakage and other drawbacks, increasing the risks for patients. Doctors and patients alike urgently need a simpler and safer interbody fusion cage to improve this situation. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the technical problem solved by the present invention is to provide a space-matching combined fusion device that can avoid excessive injection of bone filler and prevent leakage of bone filler.

[0004] To achieve the above and other related objectives, the present invention provides a cross-sectional intervertebral disc matching combined fusion device, comprising: a fusion device and a pocket component;

[0005] The fusion device has two bone receiving slots on its top surface, each extending to the bottom surface of the fusion device, and each slot is for inserting artificial bone. A spacer is provided between the two bone receiving slots. One end face of the fusion device is an insertion end. The spacer extends along the length of the fusion device. The insertion end of the fusion device has an end insertion hole. The spacer has a pouch receiving hole that communicates with the end insertion hole. The pouch receiving hole and the end insertion hole are coaxially aligned. The axial direction of the pouch receiving hole is the same as the length direction of the fusion device. The wall of the pouch receiving hole has two opposing through holes. Each through hole extends along the width of the fusion device. The two through holes communicate with the bone receiving slots respectively.

[0006] The bag assembly includes a bag body and a connector disposed at one end of the bag body. The bag body has a hollow inner cavity, and the connector is provided with a connector through hole communicating with the hollow inner cavity. The bag assembly can be inserted into the bag receiving hole through the end insertion hole.

[0007] Preferably, the length of the bag receiving hole is equal to the length of the spacer portion, and the length of the bag receiving hole is equal to the length of the through hole.

[0008] Preferably, a support head is provided on the other end of the bag body, and a support groove is provided on the end of the bag receiving hole away from the end insertion hole; when the bag is inserted into the bag receiving hole, the support head is inserted into the support groove.

[0009] Preferably, the bag body has a mesh structure, the width of the mesh openings of the bag body is less than or equal to 70 μm, and the length of the mesh openings of the bag body is less than or equal to 70 μm.

[0010] As described above, the intervertebral space matching combined fusion device of the present invention has the following beneficial effects:

[0011] When using the intervertebral space matching combined fusion device of the present invention, artificial bone is first placed in the bone receiving groove of the fusion device; after the fusion device with artificial bone is inserted into the intervertebral space, the pocket component is then implanted; then, bone filler is injected into the pocket body of the pocket component, and after the pocket body of the pocket component expands, the expanded pocket body enters the two bone receiving grooves through two penetration holes respectively, and the expanded pocket body pushes the artificial bone in the surrounding bone receiving grooves toward the endplate;

[0012] The artificial bone, supported by the pouch, can make full contact with the endplate, allowing for faster fusion. The artificial bone can automatically fill in uneven areas of the endplate, ensuring a proper match between the artificial bone and the endplate in the fusion device. Since the bone filler is inserted into the pouch, this intervertebral space matching combined fusion device can control the volume of bone filler injected, effectively preventing leakage. This intervertebral space matching combined fusion device can be used to restore the physiological height of the diseased vertebra. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of the intervertebral space matching combined fusion device of this embodiment, when artificial bone is provided but no pocket is provided.

[0014] Figure 2 The diagram shows a three-dimensional structural schematic of the fusion device of the intervertebral space matching combined fusion device in this embodiment.

[0015] Figure 3 The diagram shown is a side view of the fusion device of the intervertebral space matching combined fusion device in this embodiment.

[0016] Figure 4 for Figure 3 A schematic diagram of the AA-direction cross-sectional structure.

[0017] Figure 5 The diagram shown is a cross-sectional three-dimensional structural schematic of the fusion device of the intervertebral space matching combined fusion device in this embodiment.

[0018] Figure 6The diagram shown is a structural schematic of the connection and installation tool for the intervertebral disc matching combined fusion device in this embodiment.

[0019] Figure 7 The diagram shown is a structural schematic of the bag-shaped component connection and installation tool of the intervertebral disc matching combined fusion device in this embodiment.

[0020] Figure 8 The diagram shown is a three-dimensional structural schematic of the sac-bag component of the intervertebral space matching combined fusion device of this embodiment.

[0021] Figure 9 The diagram shows a three-dimensional structural schematic of the installation tool for the intervertebral space matching combined fusion device of this embodiment.

[0022] Figure 10 The diagram shown is a three-dimensional structural schematic of the artificial bone in the intervertebral space matching combined fusion device of this embodiment.

[0023] Figure 11 The diagram shown is a three-dimensional structural schematic of the intervertebral space matching combined fusion device of this embodiment.

[0024] Figure 12 This is a three-dimensional structural diagram showing the initial state of the bag body of the intervertebral space matching combined fusion device of this embodiment, with artificial bone provided in the fusion device.

[0025] Figure 13 This is a three-dimensional structural diagram of the bag body of the intervertebral disc matching combined fusion device in this embodiment when it is inflated.

[0026] Figure 14 The diagram shows a cross-sectional view of the pouch of the intervertebral disc matching combined fusion device in this embodiment when the pouch is inflated.

[0027] Figure 15 The diagram shows a three-dimensional structure of the sac-like component of the intervertebral space matching combined fusion device in this embodiment, with the sac-like component in an inflated state and artificial bone provided in the fusion device.

[0028] Figure 16 The diagram shown is a side view of the sac bag component of the intervertebral disc matching combined fusion device of this embodiment, without a support head, and in the initial state of the bag body.

[0029] Figure 17 The diagram shown is a side view of the sac of the intervertebral disc matching combined fusion device of this embodiment, without a support head and with the sac in an inflated state.

[0030] Figure 18The diagram shown is a cross-sectional view of the pouch component of the intervertebral space matching combined fusion device of this embodiment.

[0031] Figure 19 The diagram shows a structural schematic of a bag with mesh openings on the bag body of the intervertebral disc matching combined fusion device of this embodiment.

[0032] Explanation of icon numbers

[0033] 10 Artificial Bone

[0034] 100 Fusion Devices

[0035] 110 Bone Reception Trough

[0036] 120 Spacing

[0037] 121 Bag receiving hole

[0038] 122 Through-hole

[0039] 123 Support groove

[0040] 130 End socket

[0041] 200 pouches

[0042] 210 bag body

[0043] 211 Hollow inner cavity

[0044] 212 mesh

[0045] 220 connector

[0046] 221 Connector section through hole

[0047] 230 support head

[0048] 300 Installation Tools

[0049] 310 External thread section Detailed Implementation

[0050] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0051] Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0052] like Figures 1 to 19 As shown, the intervertebral space matching combined fusion device of this embodiment includes: a fusion device 100 and a pocket component 200;

[0053] The fusion device 100 has two bone receiving grooves 110 on its top surface, each extending to the bottom surface of the fusion device 100, and each bone receiving groove 110 is for inserting artificial bone 10; a spacer 120 is provided between the two bone receiving grooves 110; one end face of the fusion device 100 is an insertion end, the spacer 120 extends along the length direction of the fusion device 100, the insertion end of the fusion device 100 has an end insertion hole 130, the spacer 120 has a pouch receiving hole 121, the pouch receiving hole 121 communicates with the end insertion hole 130, the pouch receiving hole 121 and the end insertion hole 130 are coaxially arranged, the axial direction of the pouch receiving hole 121 is in the same direction as the length direction of the fusion device 100, the hole wall of the pouch receiving hole 121 has two oppositely arranged through holes 122; each through hole 122 extends along the width direction of the fusion device 100; the two through holes 122 are respectively connected to the bone receiving grooves 110;

[0054] The pouch component 200 includes a pouch body 210 and a connector 220 disposed on one end of the pouch body 210. The pouch body 210 has a hollow inner cavity 211, and the connector 220 is provided with a connector through hole 221 communicating with the hollow inner cavity 211. The pouch component 200 can be inserted into the pouch receiving hole 121 through the end insertion hole 130.

[0055] When using the intervertebral space matching combined fusion device of the present invention, firstly, artificial bone 10 is placed in the bone receiving groove 110 of the fusion device 100, and the artificial bone 10 is stuck in the bone receiving groove 110; after the fusion device 100 with artificial bone 10 is inserted into the intervertebral space, the pouch 200 is then implanted; then, bone filler is injected into the pouch body 210 of the pouch body 200, and after the pouch body 210 of the pouch body 200 expands, the expanded pouch body 210 enters the two bone receiving grooves 110 through two penetrating holes 122 respectively, and the expanded pouch body 210 pushes the artificial bone 10 in the surrounding bone receiving grooves 110 toward the endplate;

[0056] The artificial bone 10, supported by the pouch 200, can make full contact with the endplate, allowing the artificial bone 10 to fuse with the endplate more quickly. The artificial bone 10 can automatically fill the uneven endplate, ensuring that the artificial bone 10 in the fusion device 100 matches the endplate. Since the bone filler is filled into the pouch, this intervertebral space matching combined fusion device can control the volume of bone filler injected, effectively preventing bone filler leakage. This intervertebral space matching combined fusion device can be used to restore the physiological height of the diseased vertebra.

[0057] The intervertebral space matching combined fusion device adopts a structure that combines artificial bone 10 with a pocket component 200, which can reduce the amount of bone filler in the pocket component 200. Since the price of artificial bone 10 is lower than that of bone filler, this makes the intervertebral space matching combined fusion device more cost-effective.

[0058] The length of the pouch receiving hole 121 is equal to the length of the spacer 120, and the length of the pouch receiving hole 121 is equal to the length of the penetrating hole 122. This structure facilitates the expansion of the pouch 210 into the two bone receiving grooves 110 through the two penetrating holes 122, and facilitates the pouch 210 to push the artificial bone 10 in the surrounding bone receiving grooves 110 toward the endplate.

[0059] The other end of the bag body 210 has a support head 230, and the end of the bag receiving hole 121 away from the end insertion hole 130 has a support groove 123; when the bag part 200 is inserted into the bag receiving hole 121, the support head 230 is inserted into the support groove 123. This mechanism allows the bag part 200 to be stably positioned in the spacer portion 120.

[0060] The bag body 210 has a mesh structure, with the width and length of the mesh openings 212 being less than or equal to 70 μm. When bone filler is inserted into the bag body 210, the size of the mesh openings 212 allows the bone filler to protrude from the mesh openings 212 without flowing out, thus ensuring sufficient contact and bonding between the vertebral body and the bone filler. In this embodiment, the mesh openings 212 of the bag body 210 are rectangular. The width and length of the mesh openings 212 are both 70 μm.

[0061] When the bag 210 is unobstructed and in its initial state, the vertical cross-section of the bag 210 is circular, which facilitates its placement into the fusion device 100. When the bag 210 is in an inflated state, the inflated bag 210 is elliptical.

[0062] When the pouch 200 is used to treat vertebral trauma, the bone filler injected into the pouch 200 can be bone cement. When the pouch 200 is used in conjunction with the fusion device 100 for intervertebral disc placement, the bone filler injected into the pouch 200 can be artificial bone 10 made of decalcified bone matrix. The bone filler can also be other materials; the material of the bone filler is not limited to bone cement and artificial bone 10 made of decalcified bone matrix. In this embodiment, the bone filler is decalcified bone matrix.

[0063] The connector through-hole 221 is provided with an internal thread, and the front end of the installation tool 300 has an external thread 310, which can be connected to the internal thread. This structure facilitates the installation tool 300 to insert the pouch 200 into the fusion device 100 and facilitates the separation of the installation tool 300 from the pouch 200. The installation tool 300 has an axial through-hole 320, which communicates with the connector through-hole 221 when the installation tool 300 is connected to the pouch 200. Bone filler can flow through the axial through-hole 320 into the connector through-hole 221 and then into the pouch body 210.

[0064] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0065] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A combination fusion device for intervertebral disc matching, characterized in that, include: Fusion device (100) and bag-shaped component (200); The fusion device (100) has two bone receiving grooves (110) on its top surface, each bone receiving groove (110) extending to the bottom surface of the fusion device (100), and each bone receiving groove (110) is for inserting artificial bone (10); a spacer (120) is provided between the two bone receiving grooves (110); one end face of the fusion device (100) is an insertion end, the spacer (120) extends along the length direction of the fusion device (100), and the insertion end of the fusion device (100) is provided with an end insertion hole (130). The device is provided with a pouch receiving hole (121), which communicates with the end insertion hole (130). The pouch receiving hole (121) and the end insertion hole (130) are coaxially arranged. The axial direction of the pouch receiving hole (121) is in the same direction as the length direction of the fusion device (100). The hole wall of the pouch receiving hole (121) has two oppositely arranged through holes (122). Each through hole (122) extends along the width direction of the fusion device (100). The two through holes (122) are respectively connected to the bone receiving groove (110). The pouch component (200) includes a bag body (210) and a connector (220) disposed at one end of the bag body (210). The bag body (210) has a hollow inner cavity (211), and the connector (220) is provided with a connector through hole (221) communicating with the hollow inner cavity (211). The pouch component (200) can be inserted into the pouch receiving hole (121) through the end insertion hole (130). The bag body (210) has a mesh structure, and the width of the mesh (212) of the bag body (210) is less than or equal to 70 μm, and the length of the mesh of the bag body (210) is less than or equal to 70 μm. When bone filler is injected into the bag body (210) of the bag body (200), the bag body (210) of the bag body (200) expands. The expanded bag body (210) enters the two bone receiving grooves (110) through two penetration holes (122). The expanded bag body (210) pushes the artificial bone (10) in the surrounding bone receiving grooves (110) towards the endplate.

2. The intervertebral space matching combined fusion device according to claim 1, characterized in that: The length of the bag receiving hole (121) is equal to the length of the spacer (120), and the length of the bag receiving hole (121) is equal to the length of the through hole (122).

3. The intervertebral space matching combined fusion device according to claim 1, characterized in that: The other end of the bag body (210) has a support head (230), and the end of the bag receiving hole (121) away from the end insertion hole (130) is provided with a support groove (123); when the bag part (200) is inserted into the bag receiving hole (121), the support head (230) is inserted into the support groove (123).

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