fusion device
By incorporating through-holes and supports within the fusion unit, the problem of bone fragments and blood mixtures easily escaping is resolved, resulting in a more stable cervical fusion outcome.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SANYOU MEDICAL CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-19
AI Technical Summary
When existing fusion devices are implanted, the mixture of bone fragments and blood can easily slip out of the window, resulting in poor fusion outcomes.
A fusion device was designed, comprising a receiving through hole and a first support member, the two ends of which are connected to the inner sidewall of the receiving through hole to block the mixture of bone fragments and blood and prevent it from falling out.
It effectively prevents bone fragments and blood mixture from escaping from the receiving orifice, thus improving the stability and fusion effect of the fusion device.
Smart Images
Figure CN224370041U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of medical devices, and in particular to a fusion device. Background Technology
[0002] Anterior cervical fusion surgery involves making an incision in the front of the neck, removing the diseased intervertebral disc or vertebral body, and using screws, titanium plates, fusion cages, or autologous bone to fix adjacent cervical vertebrae, promoting skeletal fusion and achieving the purpose of relieving compression and stabilizing the cervical spine.
[0003] Existing fusion devices include windows running through their upper and lower surfaces. When implanting the fusion device into the space between adjacent cervical vertebrae, a mixture of bone fragments and blood needs to be pre-filled into the windows. Because there are no obstructions in the windows, the mixture of bone fragments and blood can easily dislodge during implantation. Therefore, existing fusion devices have the problem of the mixture of bone fragments and blood easily dislodging from the windows. Utility Model Content
[0004] The purpose of this application is to provide a fusion device to solve the problem that existing fusion devices have a mixture of bone fragments and blood that can easily detach from the window.
[0005] This application provides a fusion device, including a receiving through-hole and a first support member. The receiving through-hole is used to receive a mixture of bone fragments and blood. The two ends of the first support member are respectively connected to the inner sidewall of the receiving through-hole, and the first support member is located in the receiving through-hole.
[0006] Optionally, the fusion device further includes a second support member, the two ends of which are respectively connected to the inner sidewall of the receiving through hole, and the second support member is located in the receiving through hole.
[0007] Optionally, the length direction of the second support member is parallel to the length direction of the first support member.
[0008] Optionally, the fusion device further includes a first plane, through which the receiving through hole extends, and the first plane is used to abut against the first cervical vertebra.
[0009] Optionally, the fusion device further includes a first through hole, which penetrates the inner sidewall of the receiving through hole and penetrates the first support member.
[0010] Optionally, the first through hole extends through the first plane.
[0011] Optionally, the fusion device further includes a second plane through which the receiving through hole penetrates, the second plane being used to abut against a second cervical vertebra, the second cervical vertebra being adjacent to the first cervical vertebra.
[0012] Optionally, the fusion device further includes a second through hole, which penetrates the inner wall of the receiving through hole and penetrates the first support member.
[0013] Optionally, the second through hole extends through the second plane.
[0014] Optionally, the fusion device is a 3D-printed trabecular bone structure.
[0015] The beneficial effect of this application is that by providing a receiving through hole and a first support member, the receiving through hole is used to receive a mixture of bone fragments and blood. The two ends of the first support member are respectively connected to the inner sidewall of the receiving through hole, and the first support member is located within the receiving through hole. Because the first support member is provided in the receiving through hole, the mixture of bone fragments and blood is blocked, thus making it less likely for the mixture of bone fragments and blood to detach from the receiving through hole.
[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the following describes the application in detail with reference to the preferred embodiments and accompanying drawings. Attached Figure Description
[0017] Figure 1 This is a perspective view of the fusion device from one viewpoint in one embodiment of this application;
[0018] Figure 2 This is a perspective view of the fusion device from another angle in one embodiment of this application;
[0019] Figure 3 This is a perspective view of the fusion device after the first screw and the second screw are installed in one embodiment of this application;
[0020] Figure 4 This is a side view of the fusion device installed behind the cervical spine in one embodiment of this application;
[0021] Figure 5 This is a side view of the fusion device in one embodiment of this application.
[0022] In the attached figures, the following labels are used:
[0023] 10 Fusioners
[0024] 100 Accommodating through-hole
[0025] 101 First Support Component
[0026] 102 Second support component
[0027] 103 First Plane
[0028] 104 First Through Hole
[0029] 105 Second plane
[0030] 106 Second Through Hole
[0031] 11 First cervical vertebra
[0032] 12 Second cervical vertebra
[0033] 13 First screw
[0034] 14 Second screw Detailed Implementation
[0035] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.
[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments. To enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.
[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0038] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0039] For ease of explanation, a rectangular coordinate system O-XYZ is set in some of the attached figures, with the X-axis parallel to the length direction of the merging unit 10, the Y-axis parallel to the width direction of the merging unit 10, and the Z-axis parallel to the height direction of the merging unit 10. The positive directions of the X-axis, Y-axis, and Z-axis remain the same in all the attached figures with coordinate systems.
[0040] like Figure 1 As shown, this embodiment provides a fusion device 10, including a receiving through hole 100 and a first support member 101. The receiving through hole 100 is used to receive a mixture of bone fragments and blood. The two ends of the first support member 101 are respectively connected to the inner sidewall of the receiving through hole 100, and the first support member 101 is located in the receiving through hole 100.
[0041] like Figure 1 As shown, since the first support member 101 is provided in the receiving through hole 100, the mixture of bone fragments and blood is blocked, which makes it difficult for the mixture of bone fragments and blood to fall out of the receiving through hole 100.
[0042] like Figure 1 As shown, the fusion device 10 is generally rectangular in shape. The receiving through hole 100 is also generally rectangular in shape. The bone fragments are preferably autologous bone or artificial bone. The first support member 101 is preferably a support plate. The first support member 101 is used to prevent the mixture of bone fragments and blood from escaping in a direction parallel to the Z-axis. The thickness direction of the first support member 101 is parallel to the X-axis, and the height direction of the first support member 101 is parallel to the Z-axis.
[0043] like Figure 1 As shown, the first support member 101 and the receiving through hole 100 are preferably integrally formed. The height of the first support member 101 is less than the depth of the receiving through hole 100. The left and right ends of the first support member 101 are connected to the left and right side walls of the receiving through hole 100, respectively. The first support member 101 and the front inner side wall of the receiving through hole 100 are spaced apart.
[0044] like Figure 1 As shown, optionally, the fusion device 10 also includes a second support member 102, the two ends of which are respectively connected to the inner sidewall of the receiving through hole 100, and the second support member 102 is located in the receiving through hole 100. Because the second support member 102 is provided in the receiving through hole 100, the mixture of bone fragments and blood is further prevented from escaping from the receiving through hole 100.
[0045] like Figure 1As shown, optionally, the second support member 102 is a support plate. The second support member 102 is used to prevent the mixture of bone fragments and blood from escaping in a direction parallel to the Z-axis. The thickness direction of the second support member 102 is parallel to the X-axis, and the height direction of the second support member 102 is parallel to the Z-axis. The second support member 102 and the receiving through hole 100 are preferably integrally formed. The height of the second support member 102 is less than the depth of the receiving through hole 100. The left and right ends of the second support member 102 are connected to the left and right sides of the receiving through hole 100, respectively.
[0046] like Figure 1 As shown, optionally, the length direction of the second support member 102 is parallel to the length direction of the first support member 101. With this arrangement, one end of the first support member 101 and one end of the second support member 102 can be fixed to the same sidewall of the receiving through hole 100, and the other end of the first support member 101 and the other end of the second support member 102 can be fixed to the other sidewall of the receiving through hole 100. This reduces the number of sidewalls on the receiving through hole 100 used to connect the first support member 101 and the second support member 102, thus reserving more sidewalls for installing other parts. The second support member 102 is preferably located behind the first support member 101.
[0047] like Figure 1 As shown, optionally, the top and bottom surfaces of the second support member 102 and the first support member 101 are coplanar. The thickness of the second support member 102 is the same as the thickness of the first support member 101. The second support member 102 and the rear inner wall of the receiving through hole 100 are spaced apart.
[0048] Please also refer to Figure 1 and Figure 4 Optionally, the fusion device 10 also includes a first plane 103, through which a through hole 100 passes, and the first plane 103 is used to abut against the first cervical vertebra 11. The first plane 103 can reduce the friction between the fusion device 10 and the first cervical vertebra 11, making it easier for the fusion device 10 to be hammered into the gap between the first cervical vertebra 11 and the second cervical vertebra 12.
[0049] like Figure 1 As shown, preferably, the first plane 103 is positioned higher than the top surface of the first support 101 and the top surface of the second support 102. The first plane 103 is preferably the upper surface of the fusion unit 10. The first plane 103 is positioned obliquely downward.
[0050] Please also refer to Figure 1 and Figure 3Optionally, the fusion unit 10 also includes a first through hole 104, which penetrates the inner wall of the receiving through hole 100 and the first support member 101. With this configuration, the installation slope of the first through hole 104 is smaller, which facilitates the installation of the first screw 13.
[0051] Please also refer to Figure 1 and Figure 3 Optionally, the first through hole 104 is used to allow one end of the first screw 13 to pass through. The first through hole 104 preferably penetrates the left inner wall and the front inner wall of the receiving through hole 100. The first through hole 104 penetrates the upper left portion of the first support member 101, forming a notch in the upper left portion of the first support member 101. The axial direction of the first through hole 104 intersects with the longitudinal direction of the first support member 101. Preferably, the first through hole 104 is obliquely upward.
[0052] like Figure 1 As shown, optionally, the first through hole 104 extends through the first plane 103. This arrangement reduces the lateral dimension of the through hole 100, making the structure of the fusion unit 10 more compact. Preferably, the first through hole 104 extends through the lower left end of the first plane 103.
[0053] Please also refer to Figure 2 and Figure 4 Optionally, the fusion device 10 also includes a second plane 105 through which the receiving through hole 100 passes. The second plane 105 is used to abut against the second cervical vertebra 12, which is adjacent to the first cervical vertebra 11. The second plane 105 reduces the friction between the fusion device 10 and the second cervical vertebra 12, making it easier for the fusion device 10 to be driven into the gap between the first cervical vertebra 11 and the second cervical vertebra 12.
[0054] like Figure 5 As shown, the second plane 105 is preferably the lower surface of the fusion unit 10. The included angle between the second plane 105 and the first plane 103 is preferably an acute angle.
[0055] like Figure 2 As shown, preferably, the second plane 105 is positioned higher than the bottom surface of the first support member 101 and the bottom surface of the second support member 102. The second plane 105 is angled upwards.
[0056] like Figure 2As shown, optionally, the fusion unit 10 also includes a second through hole 106, which penetrates the inner wall of the receiving through hole 100 and also penetrates the first support member 101. With this configuration, both through holes (the first through hole 104 and the second through hole 106) only penetrate the first support member 101 and not the second support member 102, preventing damage to the second support member 102 caused by opening the second through hole 106. Simultaneously, the second through hole 106 has a smaller installation slope, thus facilitating the installation of the second screw 14.
[0057] Please also refer to Figure 2 and Figure 3 The second through hole 106 is used to allow one end of the second screw 14 to pass through. The second through hole 106 preferably penetrates the right inner wall and the front inner wall of the receiving through hole 100. The second through hole 106 preferably penetrates the lower right portion of the second support member 102, forming a notch in the lower right portion of the first support member 101. The axial direction of the second through hole 106 intersects the longitudinal direction of the second support member 102. Preferably, the second through hole 106 is angled downwards. The second through hole 106 and the first through hole 104 are spaced apart.
[0058] like Figure 2 As shown, optionally, the second through hole 106 penetrates the second plane 105. This arrangement can further reduce the lateral dimension of the accommodating through hole 100, making the structure of the fusion unit 10 more compact. Preferably, the second through hole 106 penetrates the lower right end of the second plane 105.
[0059] like Figure 1 As shown, optionally, the fusion device 10 is a 3D-printed trabecular bone structure. This configuration facilitates bone ingrowth and promotes fusion between the fusion device 10 and the spine. Trabeculae are extensions of the cortex within cancellous bone. The trabecular bone structure includes random or regular pores, forming a three-dimensional, irregular mesh. The preferred material for the fusion device 10 is titanium alloy powder.
[0060] How to use the fusion device 10
[0061] Please also refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 First, a mixture of bone fragments and blood is filled into the through-hole 100. Then, the left end of the fusion device 10 is inserted into the gap between the first cervical vertebra 11 and the second cervical vertebra 12. Next, the right end of the fusion device 10 is tapped in a positive direction parallel to the X-axis. After the fusion device 10 is tapped into the gap between the first cervical vertebra 11 and the second cervical vertebra 12, one end of the first screw 13 is passed through the first through-hole 104 and screwed to the first cervical vertebra 11. One end of the second screw 14 is passed through the second through-hole 106 and screwed to the second cervical vertebra 12, thereby fixing the fusion device 10 to the first cervical vertebra 11 and the second cervical vertebra 12 without the need for further fixation with a titanium plate.
[0062] The fusion device provided in the embodiments of this application has been described in detail above. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be construed as a limitation of this application. All equivalent modifications or changes made in accordance with the spirit and technical concept of this application should still be covered by the claims of this application.
Claims
1. A fusion device, characterized in that, include: It has a through-hole for holding a mixture of bone fragments and blood; as well as The first support member has its two ends connected to the inner sidewall of the receiving through hole, and the first support member is located in the receiving through hole.
2. The fusion device according to claim 1, characterized in that, It also includes a second support member, the two ends of which are respectively connected to the inner sidewall of the receiving through hole, and the second support member is located in the receiving through hole.
3. The fusion device according to claim 2, characterized in that, The length direction of the second support member is parallel to the length direction of the first support member.
4. The fusion device according to claim 1, characterized in that, It also includes a first plane, through which the receiving through hole penetrates, and the first plane is used to abut against the first cervical vertebra.
5. The fusion device according to claim 4, characterized in that, It also includes a first through hole, which penetrates the inner wall of the receiving through hole and penetrates the first support member.
6. The fusion device according to claim 5, characterized in that, The first through hole penetrates the first plane.
7. The fusion device according to claim 4, characterized in that, It also includes a second plane, through which the receiving through hole penetrates, and the second plane is used to abut against the second cervical vertebra, which is adjacent to the first cervical vertebra.
8. The fusion device according to claim 7, characterized in that, It also includes a second through hole, which penetrates the inner wall of the receiving through hole and penetrates the first support member.
9. The fusion device according to claim 8, characterized in that, The second through hole penetrates the second plane.
10. The fusion device according to any one of claims 1-9, characterized in that, The fusion device is a 3D-printed trabecular bone structure.