3D printing fusion cage capable of grafting bone to induce bone growth

Abstract

The utility model relates to the technical field of interbody fusion cages, in particular to a 3D (three-dimensional) printing fusion cage capable of grafting bones to induce bone growth, which comprises a fusion cage main body, the longitudinal channel penetrates through the fusion cage main body; the transverse channel penetrates through the fusion cage main body and is communicated with the longitudinal channel; the longitudinal channels and the transverse channels are filled with the porous structures; the fusion cage body and the porous structure are made of titanium alloy. The longitudinal channel and the transverse channel are perpendicular to each other, the longitudinal channel and the transverse channel are communicated to form the inner cavity of the fusion cage body, and porous structures made of titanium alloy materials are arranged in the longitudinal channel and the transverse channel, so that crawling and ingrowth of bone cells are facilitated, the long-term stability of the fusion cage body can be improved, and the bone fusion effect is better. And the fusion cage main body made of the titanium alloy material can better induce bone growth. By means of the structure, the bone fusion capacity of the fusion cage body is better than that of a PEEK fusion cage.

Description

Technical Field

[0001] This utility model relates to the field of interbody fusion device technology, specifically a 3D-printed fusion device that can induce bone growth through bone grafting. Background Technology

[0002] An interbody fusion cage is a medical device used in spinal surgery, primarily to treat spinal degenerative diseases and spinal instability caused by spinal injuries. The most commonly used interbody fusion cages are made of polyetheretherketone (PEEK) material conforming to the YY / T0660 standard, providing temporary support and aiding bone healing. The central cavity is designed for bone grafting, but the PEEK material in this area cannot fuse with the bone, thus affecting fusion efficiency and ultimately leading to unsatisfactory surgical results. Utility Model Content

[0003] The purpose of this invention is to provide a 3D-printed fusion device that can induce bone growth through bone grafting, in order to solve the problem that the existing PEEK fusion device has low fusion efficiency, resulting in unsatisfactory surgical outcomes.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A 3D-printed fusion device capable of bone grafting and inducing bone growth includes: a fusion device body; a longitudinal channel penetrating the fusion device body; a transverse channel penetrating the fusion device body and connecting to the longitudinal channel; and a porous structure filling the longitudinal and transverse channels; the fusion device body and the porous structure are made of titanium alloy.

[0006] Compared with existing technologies, the beneficial effects of this invention are as follows: the longitudinal and transverse channels are perpendicular to each other and connect to form the inner cavity of the fusion device body. The porous structure of the titanium alloy material in the longitudinal and transverse channels facilitates the ingrowth of bone cells, improves the long-term stability of the fusion device body, and results in better bone fusion. The titanium alloy fusion device body can better induce bone growth. By setting the above structure, the bone fusion capacity of the fusion device body is superior to that of the PEEK fusion device.

[0007] Preferably, it further includes:

[0008] The front end face is located at one end of the fusion unit body.

[0009] The rear end face is located at the other end of the fusion unit body;

[0010] Bone grafting holes are located on the front and / or rear face of the fusion device body.

[0011] Preferably, the bone graft hole is any one of a stepped hole, a threaded hole, or a mixed hole.

[0012] Preferably, the fusion unit body includes:

[0013] A drum-shaped portion, with longitudinal and transverse channels provided within the drum-shaped portion;

[0014] The tapered end is integrally formed with the drum-shaped part.

[0015] Preferably, the fusion body and the porous structure are integrally formed by 3D printing. Attached Figure Description

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a 3D-printed fusion device that can induce bone growth through bone grafting;

[0017] Figure 2 A three-dimensional structural diagram of the fusion unit's main body;

[0018] Figure 3 This is a cross-sectional view of the fusion unit's main body.

[0019] In the figure: fusion device body 1, drum-shaped part 11, conical end 12, bone graft hole 2, porous structure 3, longitudinal channel 4, transverse channel 5, rear end face 6, front end face 7. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] In this document, terms such as "upper," "lower," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection. Moreover, relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0022] Example

[0023] like Figure 1-3 As shown, this embodiment provides a 3D-printed fusion device capable of bone grafting and inducing bone growth, comprising: a fusion device body 1; a longitudinal channel 4 penetrating the fusion device body 1; a transverse channel 5 penetrating the fusion device body 1 and connecting to the longitudinal channel 4; and a porous structure 3 filling the longitudinal channel 4 and the transverse channel 5; the fusion device body 1 and the porous structure 3 are made of titanium alloy.

[0024] Specifically, the longitudinal channel 4 and the transverse channel 5 are perpendicular to each other and connect to form the inner cavity of the fusion device body 1. The porous titanium alloy structure 3 in the longitudinal channel 4 and the transverse channel 5 facilitates the ingrowth of bone cells, improves the long-term stability of the fusion device body 1, and results in better bone fusion. The titanium alloy fusion device body 1 can better induce bone growth. By setting the above structure, the bone fusion ability of the fusion device body 1 is superior to that of the PEEK fusion device.

[0025] Furthermore, it also includes: a front face 7, located at one end of the fusion cage body 1; a rear face 6, located at the other end of the fusion cage body 1; and a bone graft hole 2, located on the front face 7 and / or the rear face 6 of the fusion cage body 1. The bone graft hole 2 can lock the interbody fusion cage holder, facilitating the surgeon to implant the fusion cage body 1 through the holder. Moreover, the placement of the bone graft hole 2 can better induce bone growth, further enhancing the bone fusion capacity of the fusion cage body 1.

[0026] Furthermore, the bone graft hole 2 can be any one of a stepped hole, a threaded hole, or a mixed hole.

[0027] Furthermore, the fusion device body 1 includes: a drum-shaped portion 11, a longitudinal channel 4 and a transverse channel 5 disposed in the drum-shaped portion 11; and a tapered end 12, which is integrally formed with the drum-shaped portion 11. The structural design of the fusion device body 1 makes it easier to implant the fusion device body 1 into the patient's intervertebral space.

[0028] Furthermore, the fusion body 1 and the porous structure 3 are integrally formed by 3D printing.

[0029] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A 3D-printed fusion device capable of inducing bone growth through bone grafting, characterized in that, include: Fusion unit body (1); A longitudinal channel (4) extends through the fusion body (1); A transverse channel (5) extends through the fusion body (1) and connects to the longitudinal channel (4). A porous structure (3) is filled in the longitudinal channel (4) and the transverse channel (5); The fusion body (1) and the porous structure (3) are made of titanium alloy.

2. The 3D-printed fusion device for inducing bone growth through bone grafting according to claim 1, characterized in that, Also includes: Front end face (7), the front end face (7) is disposed at one end of the fusion body (1); The rear end face (6) is located at the other end of the fusion body (1); Bone graft hole (2), the bone graft hole (2) is provided on the front end face (7) and / or the rear end face (6) of the fusion body (1).

3. The 3D-printed fusion device for inducing bone growth through bone grafting according to claim 2, characterized in that, The bone graft hole (2) can be any one of a stepped hole, a threaded hole, or a mixed hole.

4. The 3D-printed fusion device for inducing bone growth through bone grafting according to claim 3, characterized in that, The fusion unit body (1) includes: The drum-shaped portion (11) is provided with the longitudinal channel (4) and the transverse channel (5). The tapered end (12) is integrally formed with the drum-shaped part (11).

5. The 3D-printed fusion device for inducing bone growth through bone grafting according to claim 1, characterized in that, The fusion body (1) and the porous structure (3) are integrally formed by 3D printing.

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