KR101402911B1 - Percutaneous spine insert - Google Patents

Abstract

An intervertebral implant according to an embodiment of the present invention is inserted between two adjacent spinal circles of a vertebra so as to maintain a space between the two spiral holes. The intervertebral implant inserts through the cracks of the tissue and the interphalangeal ligaments A body having a predetermined shape that can be inserted into the body and having two opposite notches for receiving the two body breakers, and a body provided on the body to prevent the body from being separated from the two body breakers after being inserted between the two body breakers As shown in Fig.

According to the present invention, there is no need to remove the interspinous ligament, the size of the muscle incision site can be minimized, and the intervertebral implant can be prevented from being detached from the wrist during the operation after the procedure.

Insert, Spine, Spinner, Notch, Hook

Description

Percutaneous spine insert < RTI ID = 0.0 >

The present invention relates to an intervertebral implant, and more particularly, to an intervertebral implant inserted between two adjacent intervertebral discs of a spinal column to maintain a constant distance between the two intervertebral discs.

As shown in FIG. 1, the human vertebra has a plurality of spinous processes 3 on the back of the human body, and a vertebral body 8 on the opposite side thereof. The spinal nerve 1 is located in the space between the transducer 3 and the vertebral body 8 and the interauricular ligament 7 and the yellow ligament 6 are positioned between the respective transducer 3. The ultrafilament ligament 5 and the skin 2 are present from the spinning rotor 3 toward the back side of the human body.

Generally, degenerative changes occur in the vertebrae as the human body ages, so that the spacing between the extensor rings 3 becomes closer as shown by the dotted line A, and the yellow ligaments 6 lose their elasticity and become thicker And protrudes forward as shown by a dotted line (B). Such a change causes the spinal nerves 3 or the yellow ligaments 6 to press the nerve protrusion (not shown) connected to the spinal nerve 1 or the spinal nerve 1, which is called spinal stenosis.

Methods of treating such stenosis include physical therapy, drug treatment, and surgical treatment. Among these, surgical treatment is used when the treatment is not performed by other treatment methods. In order to remove the bones and tissues of the vertebrae that press the nerve, and to prevent the vertebra from becoming unstable, the spine is fixed Surgery is generally known.

However, since the conventional surgical method described above requires removal of a wide range of spinal bones and tissues, general anesthesia is required, and a long operation time and a long recovery period after surgery are required. Therefore, elderly people with weak energy are often unable to perform surgery. In addition, complications and other reasons are not always satisfactory to obtain the effect of surgery, and there is a problem that the operation cost is high.

As a solution to this problem, although not shown in the drawings, a method of inserting an intervertebral implant, such as a U-shaped or L-shaped, between two spinal curves is proposed. This method alleviates the nerve compression by the clavicle (3) or the yellow ligament (6) by removing the interspinous ligaments between the clavicles of the spine and inserting the intervertebral insert therebetween to expand the distance between the clavicle rings.

However, in order to install the above-described conventional vertebral body insert between the spinal nodules 3 of the vertebrae, the interspinous ligament 7 between the spindle rods 3 must be removed, and the muscles should be cut into a substantial size, There is a problem to be done. Therefore, the operation for the operation becomes cumbersome, and the patient has a considerable physical burden.

In addition, there is a problem that the spinal implant is detached from the spinal column 3 of the vertebra during the operation after the procedure.

It is an object of the present invention to provide an intervertebral implant which can be easily installed between the spinal nerves of the spinal column without removing the interaural ligament and minimizing the muscle incision.

It is another object of the present invention to provide an intervertebral implant capable of preventing the spinal implant from being detached from the spinal nerve during a procedure after surgery.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to another aspect of the present invention, there is provided a vertebral body insert, which is interposed between two adjacent spinal rings of a spinal column to maintain a gap between the two spinal rings, A body having a predetermined shape that can penetrate cracks of the ligament and has two opposing notches for receiving the two extrudates; and a body provided on the body, wherein the body is inserted between the two extensions, And a separation preventing portion for preventing the separation from the centrifugal fan.

The details of other embodiments are included in the detailed description and drawings.

According to the vertebral implant of the present invention as described above, there are one or more of the following effects.

First, there is no need to remove interphalangeal ligaments, minimizing the size of the incision site, simplifying the procedure, and reducing the physical burden on patients undergoing surgery.

Second, the intervertebral implant can be prevented from being detached from the wrist during the procedure after the operation.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a vertebral implant according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

FIG. 2 is a perspective view of an intervertebral implant according to an embodiment of the present invention, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

As shown in FIGS. 2 to 4, the intervertebral insert 100 according to an embodiment of the present invention includes a body 10 and a departure-avoiding portion 20.

The body 10 is inserted between two adjacent spiral rings 3a and 3b of the vertebra (see FIGS. 6 and 7), and serves to maintain a gap between the two spiral rings 3a and 3b. The body 10 has a shape in which the front end portion 11 is tapered at a predetermined angle so as to penetrate the body tissue and the crack gap 7a of the interspinous ligament 7 and the longitudinal end face is formed by the opposed notches 13a and 13b ) As the major axis.

The body 10 has two opposing notches 13a, 13b for receiving the two spins 3a, 3b. More specifically, the notch includes a first notch 13a formed on the upper surface of the body 10 to receive the lower surface of the upper spinning rotor 3a and a second notch 13b formed on the upper surface of the body 10 to receive the upper surface of the lower spinning reel 3b. And a second notch 13b formed on the lower surface of the base plate. The first and second notches 13a and 13b are formed so as to be opposite to each other with respect to the body 10 so as to be opposed to each other so that the upper and lower protrusions 3a and 3b . The first and second notches 13a and 13b have a predetermined length and curvature corresponding to the shapes of the lower surface of the upper spinning rotor 3a and the upper surface of the lower spinning rotor 3b. A large number of protrusions 15 are formed on the surfaces of the first and second notches 13a and 13b to increase the frictional force between the notches 13a and 13b and the protrusions 3a and 3b.

The body 10 is formed with a through-hole 17 passing through the front and rear surfaces of the body 10 so as to move along the guide wire W guiding from outside the body to a target point in the body.

The body 10 includes a metal material 19 so that the position of the vertebral body insert 100 can be easily grasped at the time of imaging such as MRI and CT after the procedure. In the present embodiment, at least one hole is formed in a predetermined portion of the body 10, for example, around the first and second notches 13a and 13b, and the metal material 19 is inserted into the hole , But the present invention is not limited thereto. For example, although not shown in the drawings, the material constituting the body 10 may contain a metal component, or all or a part of the body 10 may be composed of a metal material. A preferred embodiment of the metallic material 19 is a pin.

The body 10 is made of a material harmless to human body such as titanium or PEEK (polyether ether kentone). In the case of titanium, since it is likely to be rejected after the treatment due to its metallic property, PEEK having excellent workability, adhesion and fixability is mainly used.

The release preventing portion 20 is provided on the body 10 to prevent the body 10 from being separated from the two extensions 3a and 3b after the body 10 is inserted between the two extensions 3a and 3b. The departure prevention portion 20 includes a first departure prevention portion for preventing the body 10 from being moved rearward in the inserted direction after being inserted between the two centrifuges 3a and 3b to be rotationally fixed, And a second departure prevention portion which is inserted between the spin rods 3a and 3b and rotatably fixed, and then prevented from moving forward in the inserted direction.

The first escape prevention portion includes a first hook 21 protruding rearward from the front side of the opposed notches 13a and 13b and the second escape prevention portion is provided at a rear side of the opposed notches 13a and 13b forward And a second hook 22 protruding therefrom.

5 is a cross-sectional view of an intervertebral implant according to another embodiment of the present invention.

As shown in FIG. 5, the intervertebral insert according to another embodiment of the present invention includes the first and second escape prevention portions 23 and 24, same. Therefore, components that perform the same functions as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The second escape prevention portion includes a vertical wall (23) formed on the rear side of the opposed notches (13a, 13b) so as to project perpendicularly to the surface of the notch.

6A and 6B are views illustrating a procedure of inserting an intervertebral insert according to the present invention between two spinal columns.

First, as shown in FIG. 6A, a guide wire W is installed on a predetermined portion of the interlabial ligament 7 using a medical needle (not shown), and then two interdigitated ligaments 3a and 3b are inserted into the inter ligament 7, Thereby generating a crack gap 7a that is cut in a direction parallel to the direction of the arrows. The guide wire W is inserted into the through hole 17 of the intervertebral insert 100 and the front end portion 11 of the intervertebral insert 100 is guided along the direction in which the guide wire W guides, (7a). At this time, the vertebral body insert 100 allows the notches 13a and 13b to be inserted in a direction parallel to the radial projections 3a and 3b, that is, in a direction parallel to the crack gap 7a.

6B, when the front end portion 11 of the intervertebral implant 100 passes through the crack gap 7a, the intervertebral insert 100 is inserted into the through hole 17 90 degrees so that the two spindles 3a and 3b are accommodated in the opposite notches 13a and 13b and the gap between the two spindles 3a and 3b is expanded. By enlarging the distance between the two spins 3a and 3b in this way, it is possible to alleviate the extent to which the spinal nerves 3a and 3b or the yellow ligament 6 press the spinal nerve 1.

FIG. 7 is a rear view of a vertebral implant inserted into a vertebra of a patient according to the present invention. FIG.

As shown in Fig. 7, the intervertebral insert 100 is inserted between the two wristlets 3a, 3b in the para-lateral direction of the vertebra and is rotationally fixed. At this time, the first deviation preventing portion, for example, the first hook 21 is hooked on the first side surfaces 3a 'and 3b' of the two spins 3a and 3b so that the intervertebral implant 100 is fixed It is prevented from moving backward in the inserted direction. The second separation preventing portion such as the second hook 22 or the vertical wall 23 is engaged with the second side surfaces 3a ", 3b "of the two spins 3a and 3b, Is prevented from moving forward in the inserted direction after being rotationally fixed. That is, the intervertebral insert 100 is inserted between the two wristlets 3a and 3b and is prevented from being detached from the two wristlets 3a and 3b by the first and second departure-preventing portions after being rotationally fixed. In addition, the frictional force between the protrusions 15 formed on the first and second notches 13a and 13b and the two protrusions 3a and 3b is increased, The body 100 can be firmly fixed between the two spindles 3a and 3b.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

1 is a cross-sectional view of a human vertebra;

2 is a perspective view of an intervertebral implant according to an embodiment of the present invention.

3 is a cross-sectional view taken along line III-III in Fig.

4 is a sectional view taken along the line IV-IV in Fig.

5 is a cross-sectional view of an intervertebral implant according to another embodiment of the present invention.

6A and 6B are views showing a procedure of inserting a vertebral insert according to the present invention between two spinal columns of a vertebra;

7 is a view illustrating a state in which an intervertebral implant according to the present invention is inserted into a vertebra of a patient;

Description of the Related Art

10: body 11: front end

13a: first notch 13b: second notch

15: projection 17: through hole

19: metal material 20:

21: first hook 22: second hook

23: vertical wall 100: vertebral insert

Claims (8)

A vertebral body insert inserted between two adjacent proximal portions of the vertebrae to maintain a distance between the two proximal portions, A body having a predetermined shape that can penetrate the tissue of the body and cracks in the interspinous ligament, and has two opposite notches for receiving the two spins; And And a separation preventing portion provided on the body, Wherein the separation preventing portion includes a first separation preventing portion including a first hook protruding rearward from a front side of the opposed notch and an upright wall vertically protruding from a surface of the notch at a rear side of the opposed notch. (2) an intervertebral insert comprising an escape portion. The method according to claim 1, The first departure preventing portion prevents the body from moving backward in the inserted direction after being inserted between the two spools to be rotationally fixed, And the second separation preventing portion prevents the body from moving forward in the inserted direction after the body is inserted between the two spools and is rotationally fixed. delete delete delete The method according to claim 1, Wherein a plurality of projections are formed on a surface of the opposed notch. The method according to claim 1, Wherein the body comprises a metallic material. 8. The method of claim 7, Wherein the body has at least one hole for inserting the metallic material in a predetermined region.

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