CN211095001U

CN211095001U - Plasticity interbody fusion cage

Info

Publication number: CN211095001U
Application number: CN201921858618.6U
Authority: CN
Inventors: 王平山; 毛兆虎
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-28
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a plastic interbody fusion cage, which comprises a saccule, the expansion ratio of the saccule is not less than 5 times, the balloon is provided with an injection port communicated with the interior of the balloon, the outer surface of the balloon is fixedly connected with a plurality of pointed bulges, the balloon is placed between two vertebrae from a minimally invasive incision at the vertebra of a patient during operation, a solidifiable liquid such as bone cement is injected into the balloon through the injection port, the two vertebra bones are supported by the expansion of the balloon, after solidification, can fix two vertebras, and the saccule can be well jointed with the vertebras when being expanded, thereby it is fixed effectual, the surface rigid coupling of sacculus has a plurality of cusps to be protruding, can increase the frictional force between sacculus and the vertebra, makes sacculus and vertebra fixed firm, the utility model discloses can realize the minimal access surgery of lumbar vertebrae fusion art, reduce patient's misery, shorten the recovery time of postoperative.

Description

Plasticity interbody fusion cage

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to centrum fusion operation field, specifically indicate a plasticity interbody fusion cage.

Background

With the continuous development and progress of society, the living and working modes of people are also changed greatly, more and more people need to work at desk and even sit for a long time, the aging degree of the society is increased, the spine diseases affect the health of people more and more, and related epidemiological investigation shows that about 58-84% of adult workers are troubled by the spine diseases with different degrees. Such as cervical spondylosis, lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis, scoliosis and other diseases, have become common diseases and frequently encountered diseases which affect the quality of life of the masses.

The serious patients with spinal diseases often cause spinal instability, thereby causing neck pain, low back pain, and nerve compression, causing sensory and motor disorders of limbs, and the patients who do not have the effect of non-operative treatment generally need intervertebral fusion to stabilize the spinal. In recent years, as materials and biomechanics advance, an intervertebral cage (cage) is increasingly used for intervertebral fusion. However, the existing intervertebral fusion device has the advantages of single shape fixation, complex operation, large surgical wound and uncertain fusion effect, which not only increases the pain of patients, but also prolongs the recovery time after surgery.

Disclosure of Invention

The utility model provides a plastic interbody fusion cage which can realize minimally invasive surgery, aiming at the defects of the prior art.

The utility model discloses a realize through following technical scheme, provide a plasticity interbody fusion cage, including the sacculus, the inflation rate of sacculus is not less than 5 times, be provided with on the sacculus with the filling opening of the inside intercommunication of sacculus, the surface rigid coupling of sacculus has a plurality of sharp form to be protruding.

The inflation rate of sacculus in this scheme is not less than 5 times, during the operation, put into the intervertebral space through the wicresoft incision with the sacculus in advance through handling, can solidify liquid such as bone cement through the injection mouth to the sacculus injection, pack and strut the intervertebral space through the sacculus of inflation, bone cement solidifies the back, can be fixed with two adjacent centrums, and can be fine during the sacculus inflation laminate with the upper and lower final face of adjacent centrum, thereby fixed effectual, the surface rigid coupling of sacculus has a plurality of sharp form protrudingly, can increase the frictional force between sacculus and the centrum, it is firm to make sacculus and adjacent centrum fixed.

Preferably, the injection port is an injection pipe extending into the balloon, and the end part of the injection pipe is elastically tightened. Annotate liquid pipe in this scheme and stretch up to inside extension of sacculus and tip elasticity, when pouring into liquid into the sacculus, insert the pipe of annotating with the pipe of syringe, during the insertion, the pipe will annotate the liquid pipe tip and strut to the inside injected liquid of sacculus, the back of finishing is annotated, and the pipe of syringe is extracted, and the tip of annotating the liquid pipe can elasticity tighten up, thereby seals the sacculus, prevents that liquid from flowing.

Preferably, an annular bulge is arranged on the outer side of the injection port. The annular that sets up in this scheme is protruding can increase the thickness in the filling opening outside, and the tensile volume of filling opening department when reducing the sacculus inflation to the unable elasticity of pipe tip is tightened up when preventing the sacculus inflation.

Preferably, the injection port is disposed in a posterior direction of the spine. The injection port is arranged in the direction behind the spine in the scheme, so that an operator can conveniently inject liquid into the balloon from the back direction of a patient.

Preferably, the thickness of the balloon in the directions of two sides of the vertebral body is larger than that of the rest part. In the scheme, the thickness of the saccule in the directions of two sides of the vertebral body is larger than that of the rest part, so that the expansion rate of the saccule in the directions of two sides is larger than that in the front and back directions when the saccule is expanded, the length of two sides of the saccule is larger than that in the front and back directions, and the saccule adapts to the shape of the section of the vertebral body.

Preferably, the pointed protrusions are arranged on the upper end face and the lower end face, which are attached to the adjacent vertebral bodies after the balloon is inflated. In the scheme, the pointed protrusions are arranged on the upper end face and the lower end face which are attached to the adjacent vertebral bodies after the balloon is expanded, so that the friction injury of the parts, which are not attached to the vertebral bodies, on the balloon to other tissues of the body is reduced.

The utility model has the advantages that: the utility model discloses a plasticity interbody fusion cage, the inflation rate of sacculus is not less than 5 times, during the operation, put into the intervertebral space through the wicresoft incision in advance through handling with the sacculus, but pour into the liquid that bone cement etc. can solidify into to the sacculus through the filling opening, pack and strut the intervertebral space through the sacculus of inflation, bone cement solidifies the back, can fix two adjacent centrums, and can be fine when the sacculus inflation laminate with the last terminal plate face of adjacent centrum from top to bottom, thereby fixed effectual, the surface rigid coupling of sacculus has a plurality of points to appear protrudingly, can increase the frictional force between sacculus and the centrum, it is fixed firm to make sacculus and adjacent centrum, the utility model discloses can realize the wicresoft treatment of lumbar vertebrae fusion art, easy operation struts fixed fusion effectually, has reduced patient's misery, has shortened the recovery time of.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view taken along the plane A-A of the present invention;

FIG. 4 is a schematic view of the expanded structure of the present invention;

shown in the figure:

1. a balloon 2, a pointed protrusion 3, an injection port 4 and an injection tube.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1-4, the utility model discloses a plasticity interbody fusion cage, including sacculus 1, sacculus 1 is made for harmless elastic material of human body such as silica gel, and sacculus 1's inflation multiplying power is not less than 5 times, be provided with on the sacculus 1 with the filling opening 3 of sacculus 1 inside intercommunication, filling opening 3 sets up the direction at the centrum rear to make things convenient for operating personnel to follow the patient back direction and to sacculus 1 inside injection liquid.

The thickness of the saccule 1 in the directions of two sides of the vertebral body is larger than that of the rest part, so that the cross section of the saccule 1 after being inflated is oblong, and the sizes of the two sides are larger than those of the front and back.

The injection port 3 is an injection tube 4 extending into the balloon 1, and the end of the injection tube 4 is elastically contracted.

An annular bulge is arranged on the outer side of the injection opening 3.

The outer surface of the balloon 1 is fixedly connected with a plurality of pointed protrusions 2, the pointed protrusions 2 are arranged on the upper end surface and the lower end surface of the balloon 1 which is attached to an adjacent vertebral body after being expanded, the pointed protrusions 2 can be protrusions arranged when a balloon body material is processed, and the protrusions made of a titanium alloy material can also be fixedly connected to the balloon 1.

The utility model discloses a use method: air in the sacculus 1 is pumped out through the vacuumizing equipment during operation, so that the size of the sacculus can be reduced, and the phenomenon that the sacculus cannot be firmly fixed with an adjacent vertebral body due to the air in the sacculus can be prevented.

Put into the intervertebral space that has handled in advance through the wicresoft incision with sacculus 1, insert the pipe of syringe and annotate in liquid pipe 4, when inserting, the pipe will annotate liquid 4 tip struts, thereby to the inside injected liquid of sacculus, the back of finishing of pouring into, the pipe of syringe is extracted, the tip of annotating liquid pipe 4 can elasticity tighten up, thereby seal the sacculus, prevent the liquid outflow, prop the intervertebral space open through the inflation of sacculus 1, bone cement solidifies the back, can fix two adjacent centrums, and can be fine when sacculus 1 inflation with adjacent centrum about the terminal plate laminating, thereby fixed effectual, the surface rigid coupling of sacculus 1 has a plurality of sharp form to protruding 2, can increase the frictional force between sacculus 1 and the centrum, make sacculus 1 fixed firm with the centrum.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. A plastic intervertebral cage, characterized in that: the balloon inflation device comprises a balloon (1), the inflation rate of the balloon (1) is not less than 5 times, an injection port (3) communicated with the interior of the balloon (1) is formed in the balloon (1), and a plurality of pointed protrusions (2) are fixedly connected to the outer surface of the balloon (1).

2. A plastic intervertebral cage according to claim 1, wherein: the injection port (3) is an injection pipe (4) extending into the balloon (1), and the end part of the injection pipe (4) is elastically tightened.

3. A plastic intervertebral cage according to claim 2, wherein: the outer side of the injection opening (3) is provided with an annular bulge.

4. A plastic intervertebral cage according to claim 1, wherein: the injection opening (3) is arranged in the direction behind the vertebra.

5. A plastic intervertebral cage according to claim 1, wherein: the thickness of the saccule (1) in the directions of two sides of the vertebral body is larger than that of the rest part.

6. A plastic intervertebral cage according to claim 1, wherein: the pointed protrusions (2) are arranged on the upper end surface and the lower end surface which are attached to the adjacent vertebral bodies after the balloon (1) is expanded.