3D printing elastic intervertebral disc repairing device

Abstract

The utility model discloses a 3D printing elastic intervertebral disc repairing device, and relates to the technical field of devices for traction or reduction of fractured limbs. The 3D printing elastic intervertebral disc repairing device comprises a waist cone fusion connector, the waist cone fusion connector comprises a plurality of bulges, two fusion connector top ends, a fusion connector grid part and a fusion connector fusion part; the multiple protrusions are fixedly connected to the top ends of the corresponding fusion connectors respectively, a special stress structure design is adopted for the grid part of each fusion connector, the original stress state can be rapidly recovered after stress is subjected to form change, deformation does not occur permanently, and compared with a traditional cone fixator which enables a cone to lose normal activity, the fusion connector has the advantages of being simple in structure and convenient to use. The grid part of the fusion connector adopts a stress grid design, so that the movement requirement of a normal cone can be met, namely, the obstruction of the waist cone fusion connector to the movement of the cone is reduced to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the technical field of devices for traction or reduction of fractured limbs, and in particular to a 3D printed elastic intervertebral disc repair device. Background Art

[0002] Intervertebral fusion is one of the methods for treating spinal diseases. Every year, more and more people receive intervertebral fusion treatment. Cervical disc herniation is one of the common spinal diseases. The effective way to treat cervical disc herniation is to perform intervertebral fusion surgery, that is, to remove the diseased intervertebral disc, and then place a cervical spacer that is consistent with the shape of the intervertebral disc in the removed intervertebral disc area, so that the cervical spine can achieve immediate stability, promote fusion, and rebuild and maintain the intervertebral height and the physiological curvature of the cervical spine.

[0003] However, most of the vertebral fixators currently on the market directly use medical screws to fix the vertebrae. Since the curvature of existing vertebrae is different, fixators of different sizes are required for connection. Since the size of the vertebral fixators cannot be adjusted, the fixed connection of the vertebrae is affected. Moreover, this fixed connection only temporarily fixes the intervertebral disc when the intervertebral disc can recover. However, if the intervertebral disc cannot recover, this fixation device hinders the normal movement of the cone.

[0004] After searching, it is known that the Chinese utility model patent, publication number "CN213465366U", discloses a bone cone fixator, which solves the problem that most of the bone vertebrae fixators on the market currently use medical screws to fix the vertebrae directly. Since the curvature of existing bone vertebrae is different, fixators of different sizes are required for connection. Since the size of the bone vertebrae fixator cannot be adjusted, the fixed connection of the bone vertebrae is affected. It includes a connecting screw, and two first elastic clips and a second elastic clip are fixedly installed on the bottom of the connecting screw. The first elastic clip and the second elastic clip are symmetrically distributed with the axis of the connecting screw as the center. The external thread of the connecting screw is sleeved with a nut, and the outer wall of the nut is fixedly installed with two fixed connecting plates.

[0005] The above technical solution realizes the replacement of fixed pressure plates of different lengths and facilitates the fixation and clamping of the vertebral body. However, if the intervertebral disc cannot be restored, this fixing device can easily hinder the normal movement of the cone. Therefore, a 3D printed elastic intervertebral disc repair device is urgently needed to solve the above problem. Utility Model Content

[0006] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a 3D printed elastic intervertebral disc repair device that can solve the problem that when the intervertebral disc cannot be restored, the common fixing device can easily hinder the normal movement of the cone.

[0007] To achieve the above-mentioned objectives, the present utility model provides the following technical solutions: a 3D printed elastic intervertebral disc repair device, comprising a lumbar cone fusion connector;

[0008] The waist cone fusion connector comprises a plurality of protrusions, two fusion connector tops, a fusion connector grid part and a fusion connector fusion part.

[0009] Preferably, the plurality of protrusions are respectively fixedly connected to the top ends of the corresponding fusion connectors.

[0010] Preferably, the top ends of the two fusion connectors are fixedly connected to two sides of the fusion portion of the fusion connector.

[0011] Preferably, the fusion connector grid portion is fixedly connected to the fusion portion of the fusion connector, and the upper and lower ends of the fusion connector grid portion are respectively fixedly connected to the top of the corresponding fusion connector.

[0012] Preferably, the above-mentioned fixed connection methods are all fixed by 3D printing integrated molding.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The 3D printed elastic intervertebral disc repair device adopts a special stress structure design for the fusion connector grid part, which can quickly restore the original stress state after the shape changes under stress and remain unchanged for a long time. Compared with the traditional cone fixator that causes the cone to lose its normal range of motion, the fusion connector grid part of the utility model adopts a stress grid design, which can meet the normal cone activity requirements, that is, minimize the obstruction of the lumbar cone fusion connector to the cone activity.

[0015] (2) The 3D printed elastic intervertebral disc repair device uses medical screws to fix the traditional cone. The cone part loses its normal range of motion after fixation. The utility model adopts special materials, special design, and 3D printing technology to produce a unified whole. It does not require other fixing devices (such as traditional screws, etc.). It can be directly implanted into the patient's cone and wait for the fusion device to grow and fuse with the cone completely. It can minimize the discomfort of the patient's lumbar spine after using the lumbar cone fusion connector, that is, improve the patient's comfort.

[0016] (3) The 3D printed elastic intervertebral disc repair device requires special customization of the size of the traditional vertebral fixator according to the different conditions of the patients. It not only takes a long time to customize, but also has to be re-customized when the size needs to be changed due to other conditions of the patient. When the lumbar cone fusion connector is used, by setting a suitable ratio between the top part of the fusion connector and the fusion part, the length embedded in the bone can be adjusted at any time according to the patient's physical condition.

[0017] (4) The 3D printed elastic intervertebral disc repair device uses physical fixation for the traditional fixator. The top of the fusion connector and the fusion part of the utility model are completely fused into the cone with the help of bone growth, which makes the fixation more firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is an overall schematic diagram of the waist-cone fusion connector of the utility model.

[0020] Reference numerals: 1, waist cone fusion connector; 11, protrusion; 12, top of fusion connector; 13, grid part of fusion connector; 14, fusion part of fusion connector. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] See also Figure 1 , the utility model provides a technical solution: a 3D printed elastic intervertebral disc repair device, including a lumbar cone fusion connector 1;

[0026] The waist-cone fusion connector 1 includes a plurality of protrusions 11 , two fusion connector tips 12 , a fusion connector grid portion 13 and a fusion connector fusion portion 14 .

[0027] The plurality of protrusions 11 are fixedly connected to corresponding fusion connector tops 12 .

[0028] The two fusion connector top ends 12 are fixedly connected to two sides of the fusion connector fusion portion 14 respectively.

[0029] The fusion connector grid portion 13 is fixedly connected to the fusion connector fusion portion 14 , and the upper and lower ends of the fusion connector grid portion 13 are respectively fixedly connected to the corresponding fusion connector top end 12 .

[0030] The above-mentioned fixed connection methods are all fixed by 3D printing one-piece molding.

[0031] When the lumbar cone fusion connector 1 is needed, first, the top 12 of the fusion connector is embedded in the vertebral bone. Multiple protrusions 11 are designed on both sides of the top 12 of the two fusion connectors. The protrusions 11 play a role in fixing the fusion after the top 12 of the fusion connector is embedded in the bone to prevent loosening.

[0032] Secondly, the fusion connector grid part 13 is designed as a fine grid. The fusion connector grid part 13 is located below the bone embedding port of the vertebral body or on the cone bone above. As the bone grows, it is embedded in the fine grid to complete the fixation effect.

[0033] Finally, the fusion connector mesh portion 13 primarily fulfills the role of the lumbar intervertebral disc. Utilizing 3D printing technology, this portion features a designed mesh structure with stress elasticity, allowing it to change angles as the cone moves and then return to its original shape upon completion of the movement. This fusion connector mesh portion 13 can accommodate various bending angles.

[0034] The lumbar cone fusion connector 1 is made of special materials, special design, and 3D printing technology to form a unified whole. It does not require other fixing devices (such as traditional screws, etc.) and can be directly implanted into the patient's cone. Wait for the fusion device to completely grow and fuse with its own cone.

[0035] The mesh part 13 of the fusion connector adopts a special stress structure design, which can quickly restore the original stress state after the shape changes under stress and remain unchanged for a long time.

[0036] The ratio of the top 12 portion of the fusion connector to the fusion portion can be adjusted at any time based on the patient's physical condition to adjust the length of the connector embedded in the bone.

[0037] Traditional cone fixators are fixed with medical screws, and the cone loses its normal range of motion. The present invention adopts a 3D-printed one-piece fusion body without the aid of other auxiliary fixation devices.

[0038] Traditional vertebral fixators need to be specially customized to suit different patient conditions. The present invention generally does not require special customization. It can adapt to different size requirements by changing the embedding depth, and multiple fusion cages can be placed around the same adjacent cone.

[0039] The fixing part of the traditional fixator adopts physical fixation, while the top 12 and the fusion part of the fusion connector of the present invention are completely fused into the cone with the help of bone growth, so the fixation is more firm.

[0040] The traditional cone fixator makes the cone lose its normal range of motion, while the grid portion 13 of the fusion connector of the present invention adopts a stress grid design, which can meet the normal activity requirements of the cone.

[0041] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A 3D printed elastic intervertebral disc repair device, characterized in that: include: Lumbar cone fusion connector (1); The waist cone fusion connector (1) comprises a plurality of protrusions (11), two fusion connector tops (12), a fusion connector grid part (13) and a fusion connector fusion part (14).

2. The 3D printed elastic intervertebral disc repair device according to claim 1, characterized in that: The plurality of protrusions (11) are respectively fixedly connected to the top ends (12) of the corresponding fusion connectors.

3. The 3D printed elastic intervertebral disc repair device according to claim 2, characterized in that: The two fusion connector top ends (12) are respectively fixedly connected to the two sides of the fusion connector fusion part (14).

4. The 3D printed elastic intervertebral disc repair device according to claim 3, characterized in that: The fusion connector grid part (13) is fixedly connected to the fusion connector fusion part (14), and the upper and lower ends of the fusion connector grid part (13) are respectively fixedly connected to the corresponding fusion connector top (12).

5. The 3D printed elastic intervertebral disc repair device according to claim 4, characterized in that: The above-mentioned fixed connection methods are all fixed by 3D printing one-piece molding.

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