CN219896036U - Liquid bone intervertebral space injection molding device - Google Patents

Abstract

The utility model relates to a fusion device for the intervertebral space, specifically a liquid bone intervertebral space injection molding device, which includes a mesh fusion device implanted in the intervertebral space of the spine, and a liquid injection port is provided on the peripheral wall of the mesh fusion device. The outer periphery of the mesh cage is covered with a molded enclosure, and the molded enclosure is provided with a through hole, and liquid bone is injected into the inner cavity of the mesh cage through the through hole and the liquid injection port. This utility model injects liquid bone into the inner cavity of a hollow mesh fusion device. The fluid-like liquid bone can better match the patient's intervertebral space during the injection flow process, and after the liquid bone is solidified, it can be matched with the fusion device to achieve better results. At the same time, the utility model uses the molded enclosure to prevent the injected liquid bone from flowing out of the mesh fusion device, so that the liquid bone solidifies in the inner cavity of the fusion device, which not only avoids waste, but also further improves the fusion effect.

Description

A liquid bone intervertebral space injection molding device

Technical field

The utility model relates to a fusion device for the intervertebral space, specifically a liquid bone intervertebral space injection molding device.

Background technique

For the treatment of patients with spinal degenerative diseases such as intervertebral disc herniation, the traditional solution is to rigidly fix the posterior part of the vertebral body with bolts and implant a fusion agent between the vertebral body end plates. In this solution, both the front and rear parts of the vertebral body need to be Fixed, heavy workload, long operation time. At present, most of the treatment options adopted are centered on the diseased intervertebral space, implanting a cage in the intervertebral space, and using the spreading force of the cage to keep the muscles, annulus fibrosus, and anterior and posterior longitudinal ligaments of the fusion segment under continuous tension. , to achieve three-dimensional hyperstatic fixation of the fusion segments and cages to restore the stress of the front and middle columns of the spine, maintain the inherent physiological bulge of the spine, expand the intervertebral foramen, and relieve the pressure on the dural sac and nerve roots. The hollow structure of the cage provides a good mechanical environment for the fusion of the cancellous bone within it, thereby achieving the purpose of permanent interface fusion. However, this type of cage cannot completely match the patient's intervertebral space, resulting in poor fusion effect and slow postoperative recovery.

Utility model content

In view of the above technical problems, the present utility model provides a liquid bone intervertebral space injection molding device with good fusion effect.

The technical solution adopted by this utility model to solve the above technical problems is: a liquid bone intervertebral space injection molding device, which includes a mesh fusion device implanted in the intervertebral space of the spine, and a liquid injection port is provided on the peripheral wall of the mesh fusion device. The outer periphery of the mesh cage is covered with a molded enclosure, and the molded enclosure is provided with a through hole, and liquid bone is injected into the inner cavity of the mesh cage through the through hole and the liquid injection port.

Preferably, the mesh fusion device is in an "I" shape.

Preferably, the molded enclosure is arc-shaped and fitted to the outer wall of the mesh cage.

Preferably, the shaped enclosure is composed of an annular body with an opening.

Preferably, the shaped enclosure is made of elastic material.

Preferably, the through hole is provided at a position opposite to the opening.

Preferably, the through hole is aligned with the liquid injection port.

Preferably, the molded enclosure has a boss extending outward, and the through hole is opened on the boss.

Preferably, the ends of the shaped enclosures located on both sides of the opening are wedge-shaped.

It can be seen from the above technical solution that the present utility model injects liquid bone into the inner cavity of the hollow mesh fusion device. The fluid bone can better match the patient's intervertebral space during the injection flow process, and the liquid bone will match after solidification. The fusion device can achieve a better fusion effect; at the same time, the utility model uses a molded enclosure to prevent the injected liquid bone from flowing out of the mesh fusion device, so that the liquid bone can be solidified in the inner cavity of the fusion device, which not only avoids waste, but also further improves efficiency. Fusion effect.

Description of the drawings

Figure 1 is a schematic structural diagram of a preferred mode of the present invention.

Figure 2 is a schematic side structural view of Figure 1.

Detailed ways

The present utility model will be introduced in detail below with reference to the accompanying drawings. The schematic embodiments and descriptions of the present utility model are used to explain the present utility model, but are not intended to limit the present utility model.

As shown in Figures 1 and 2, the present utility model provides a liquid bone intervertebral space injection molding device, which includes a mesh fusion device 1 implanted in the intervertebral space of the spine. The mesh fusion device has a liquid injection port 11 on its peripheral wall. The outer periphery of the mesh cage is covered with a molded enclosure 2, which is provided with a through hole 21. Liquid bone is injected into the inner cavity of the mesh cage through the through hole and the liquid injection port. The liquid bone is made of An artificial bone material similar to bone cement is prepared from artificial bone and a variety of reagents. The utility model uses a molded enclosure covering the peripheral wall of the fusion device to block the liquid bone in the inner cavity of the mesh fusion device, which not only prevents the liquid bone from flowing out of the fusion device, but also improves the fusion effect.

Specifically, the mesh fusion device is in the shape of an "I", and its upper and lower ends play a better supporting role, with uniform force and stable structure; preferably, the molded enclosure is arc-shaped and connected with the The outer wall of the mesh fusion device is fit, that is, the molded enclosure is wrapped on the outer wall of the middle section of the "I"-shaped fusion device, and the edges of its upper and lower ends are just in contact with the inner walls of the upper and lower ends of the "I"-shaped fusion device. , which can further prevent liquid bone from flowing out. During the implementation process, the molded enclosure is composed of an annular body with an opening 22. On the one hand, the designed opening facilitates placement and removal during surgery and improves the efficiency of surgical operations; on the other hand, there is generally no space between the fusion cage and the anterior path of the spine. There is little or no gap, so the molded enclosure does not need to cover the anterior direction of the spine, and the designed opening just avoids this direction.

During the implementation process, the molded enclosure is made of elastic material, such as silicone material, which further facilitates placement and removal and avoids damage caused by collision. Preferably, the through hole is provided at a position opposite to the opening to facilitate the injection of liquid bone; the through hole is aligned with the liquid injection port to further facilitate rapid injection of liquid bone. The molded enclosure of the present invention has a boss 23 extending outward, and the through hole is provided on the boss. The boss is designed to facilitate the clamping of the boss to place or remove the molded enclosure during surgery. Preferably, the ends of the molded enclosures located on both sides of the opening are wedge-shaped, which facilitates the introduction of the molded enclosures into the outer wall of the cage and reduces the operation time.

Claims (9)

1. A liquid bone intervertebral space injection molding device comprising a mesh cage implanted in an intervertebral space of a spinal column, characterized in that: the netlike fusion device is characterized in that the peripheral wall of the netlike fusion device is provided with a liquid injection port, the periphery of the netlike fusion device is coated with a forming fence, the forming fence is provided with a through hole, and liquid bone is injected into the inner cavity of the netlike fusion device through the through hole and the liquid injection port.

2. The liquid bone intervertebral space injection molding apparatus of claim 1, wherein: the reticular fusion device is I-shaped.

3. The liquid bone intervertebral space injection molding apparatus of claim 2, wherein: the forming enclosure is arc-shaped and is attached to the outer wall of the netlike fusion device.

4. A liquid bone intervertebral space injection molding apparatus as recited in claim 3, wherein: the shaped enclosure is composed of an annular body with an opening.

5. The liquid bone intervertebral space injection molding apparatus of claim 4, wherein: the shaped enclosure is made of an elastic material.

6. The liquid bone intervertebral space injection molding apparatus of claim 4, wherein: the through hole is provided at a position opposite to the opening.

7. The liquid bone intervertebral space injection molding apparatus of claim 5, wherein: the through hole is aligned with the liquid injection port.

8. The liquid bone intervertebral space injection molding apparatus of claim 4, wherein: the forming enclosure is outwards extended to form a boss, and the through hole is formed in the boss.

9. The liquid bone intervertebral space injection molding apparatus of claim 4, wherein: the end parts of the forming enclosing barriers positioned at the two sides of the opening are wedge-shaped.