KR100620115B1 - Spine Insert - Google Patents

Abstract

The present invention is inserted and fixed between the spinous process existing on each of two adjacent vertebrae (pinous process) to maintain a constant spacing between the spinous process, and the upper face and inferior facet (superior facet) of the adjacent spine It relates to a spinal insert for binding and fixing so that there is no relative movement between).

The spinal insert according to the present invention comprises a spacer having two opposite notches for receiving the spinous processes of two vertebrae, two vertebrae and a strap for securing the spacer, the spacer allowing the strap to pass therethrough. And a through-hole formed through the two opposing notches, wherein the strap passes through the through-hole and binds the spacer and the two spinous processes in an eight-character shape to fix the two vertebrae and the spacer.

Spine, spinous process, articular process, interultra ligament, spinal stenosis, spacer, strap

Description

Spine Insert

1 is a cross-sectional view of the human spine.

2 illustrates a prior art.

3 is a perspective view of a spacer according to the present invention;

4 is a front view of the spacer according to the present invention;

5 is a right side view of the spacer according to the present invention;

6 is a plan view of a spacer according to the present invention;

7 is a perspective view of a strap according to the present invention.

8 shows the work required before inserting the spacer.

FIG. 9 is a view from the dorsal side of the human body showing the state in which the interultra ligament of the spacer insertion position is removed through the process shown in FIG.

10 to 15 is a view showing a process for installing the spinal insert according to the first embodiment of the present invention.

16 is an enlarged view of a portion (H) of FIG. 15.

17 is a view showing a form in which the spinal insert is installed according to the second embodiment of the present invention.

(Symbol description of main part of drawing)

30: spacer 31a, 32a: first flange

31b, 32b: second flange 33a: first notch

33b: second notch 34: through hole

40: strap 41: first hook

43: band 44: the second hook

TECHNICAL FIELD The present invention relates to a spinal insert, and more particularly, is inserted and fixed between spinous processes existing on adjacent spines to maintain a constant distance between spinous processes and adjacent lettuce. It relates to a spinal insert for binding and fixing so that there is no relative movement between the superior facet and the inferior facet.

1 is a cross-sectional view of the human spine. A number of spinous processes 3 are located on the back of the human body, and the vertebral body 8 is located on the opposite side. The spinal nerve 1 is located in the space between the spinous process 3 and the vertebral body 8, and the interspinous ligament 7 and the yellow ligament 6 are located between each spinous process 3. Then, the superficial ligaments 5 and the skin 20 exist from the spinous process 3 toward the back of the human body.

As the human body ages, the above-described degenerative changes also occur in the spine, and the gap between the spinous processes 3 becomes closer, as indicated by the dotted line A, and the ligamentum flavum 6 loses its elasticity and thickens. It protrudes forward like a dotted line B. Compression of the spinous process 3 or the yellow ligament 6 by the above-described change in the spinal nerve 1 or the spinous nerve (not shown) connected to the spinal nerve 1 is called spinal stenosis.

Treatment of spinal stenosis includes treatment with drugs, physical therapy, surgery. Among these, surgical treatment is used when it is not treated by other treatment methods, and it removes bones and tissues compressing the nerves and fixes the spine with screws in preparation for instability of the spine. Generally known. However, the above-described surgical method requires extensive removal of bone and tissue, so general anesthesia is required, and a long operation time and a long recovery period after surgery are required. Therefore, elderly people who have weak energy often do not operate, there is a problem that often occurs when complications and other reasons do not obtain a satisfactory effect, there was a problem that costs a lot of surgery.

As a solution to this problem, there is a method of inserting a spinal insert between two spinous processes, a recent technique related to this in the Republic of Korea Patent Publication (Publication No. 2002-0068035) is shown in FIG.

A spacer 2 having two opposite notches is inserted between the two spinous processes 3a and 3b to accommodate the two spinous processes 3a and 3b of the two vertebrae. Here, each notch is defined by two flanges 11a, 12a, 11b, 12b, each having an inner wall, which insert also has ties 13a, 13b for holding the spacer 2 on the spinous process. Have. This tie wraps around the surface of the opposite spinous process from the bottom of the notch.

The ends of the ties are inserted and then pulled to hold the ties 13a and 13b in place, thereby retaining and retaining the spacers 2 in the spinous processes 3a and 3b. Also, in order to know the position of the spacer 2 inserted in the spine, an opaque transverse member to the X-ray can be inserted therein, which is thin enough and does not interfere with the observation on the X-ray and the central housing ( 14) is accommodated in.

In the prior art, in addition to the interultra ligaments between the spinous processus 3a and the spinous process 3b into which the spacer is inserted, the upper interultra ligaments and the lower interultra ligaments are removed, and then wrapped with ties 13a and 13b. Therefore, the ligament of the part without abnormality should be removed, causing inconvenience to the patient and increasing the procedure time. Then, the spacers 2 are wrapped in the horizontal lateral direction because they surround the upward flanges 11a and 11b and the spinous process 13a of the spacer 2 and surround the ends and the spinous processes 13b of the downward flanges 12a and 12b, respectively. Under force, the bearing capacity is weak and horizontal displacement can occur.

On the other hand, when the human body is aging or an abnormality occurs in the intervertebral disc (4), in addition to such spinal stenosis, relative movement between the superior facet and the inferior facet of the spine occurs, or above the disc Movement in the vertical or horizontal direction between the spinal column of the patient can cause great pain to the patient.

Therefore, in inserting an insert between two vertebrae, it is possible to reduce the burden on the patient and simplify the procedure, and it is necessary to develop an intervertebral insert in which the insert and the two vertebrae are firmly fixed and fixed.

The present invention has been made in view of the above-described needs, and an object of the present invention is to provide an intervertebral insert which maintains a predetermined interval in the period of extreme spine of two vertebrae and fixes the two vertebrae so that there is no relative movement.

It is another object of the present invention to provide an intervertebral insert that can be placed between the spinous processes by removing only the interlateral ligament at the position at which the intervertebral insert is inserted without removing the collateral inter ligament.

In addition, the present invention is another object to reduce the impact and stress (stress) that can occur in the spinous process by the cushioning and close action of the strap in the intervertebral insert and spinous process.

In order to achieve the above object, a spinal insert comprising a spacer having two opposing notches for receiving the spinous processes of two vertebrae, and a strap for securing the two vertebrae and the spacer, wherein the spacer comprises: A through hole formed through the two opposing notches so as to pass therethrough, and the strap fixes the two vertebrae and the spacer by passing through the through hole and tying the spacer and the two spinous processes in the shape of eight characters. It is characterized by.

The fixing is preferably made by knotting the both ends of the band constituting the strap to a part of the band tied in the form of the eight characters.

The through hole has a width enough to allow the width of the strap to pass therethrough, and a thickness sufficient to allow two bands of the strap to be inserted with a margin.

Preferably, the thickness t1 at the central portion of the through hole is smaller than the thickness t2 of the through hole at a portion where the through hole and the opposite notch are connected.

It is preferable that the said notch has an appropriate angle according to the shape of the said spinous process.

The strap includes a band for binding and fixing the spacer and the two spinous processes, and a first hook and a second hook connected to both ends of the band to penetrate the interultra ligament, respectively, the first hook and the second hook. Preferably, the hooks have different sizes according to the spinous process shape near the interultra ligament.

The spacer is preferably made of a rigid material to maintain a constant gap between the two spinous processes after insertion.

In order to achieve the above object, a spinal insert comprising a spacer having two opposing notches for receiving the spinous processes of two vertebrae, and a strap for securing the two vertebrae and the spacer, wherein the spacer comprises: And a through hole formed through the two opposing notches so as to pass therethrough, and the strap passes through the through hole, winds the spacer and the two spinous processes in the shape of eight characters, and then recirculates the outline of the eight characters. The two vertebrae and the spacers are fixed by enclosing at least one time in a zero-shape.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Intervertebral insert according to the present invention may be composed of a spacer for maintaining a predetermined interval between two predetermined spinous process, and a strap for tying the spacer and the two spinous process so that the spacer is firmly fixed between the two spinous process. .

3 is a perspective view of the spacer 30 of the insert for spine according to the present invention. As such, the spacer 30 passes through the first notch 33a and the second notch 33b, the first flanges 31a and 32a and the second flanges 31b and 32b, and the notches. It may be configured to include a hole (34).

4 is a front view of the spacer 30 of FIG. 1 as viewed in the direction (C) of FIG. 3. As shown in FIG. 4, the spacer 30 may have a symmetrical shape in the left and right directions but may not be a symmetrical shape in the vertical direction. This is because the spinous process 3 generally has a symmetrical shape, but does not have a symmetrical shape in the vertical direction.

The spacer 30 is inserted between two spinous processes 3a and 3b in which spinal stenosis occurs, a first notch 33a and a lower part of the spinous processes receiving the lower part of the upper spinous process 3a of the two spinous processes. It has the 2nd notch 33b which accommodates the upper part of spinous process 3b. In addition, the notches 33a and 33b are configured to face in opposite directions to each other, that is, to face each other, so as to support the compressive force in the vertical direction of the upper spinous process 3a and the lower spinous process 3b.

By the way, the shape of the lower part of spinous process and the upper part of spinous process is different. The lower part of the spinous process has a relatively narrow and long shape compared to the upper part of the spinous process, and the upper part of the spinous process has a relatively wider and shorter shape than the lower part of the spinous process. Accordingly, the first notch 33a and the first flanges 31a and 32a fit the lower shape of the spinous process and the second notch 33b and the second flanges 31b and 32b fit the upper shape of the spinous process. It is desirable to have different sizes.

In addition, the first notch 33a is defined by the first flanges 31a and 32a which prevent the upper spinous process 3a from moving in the horizontal direction, and the second notch 33b has the lower spinous process 3b in the horizontal direction. It is defined by the second flange (31b, 32b) to prevent movement to.

The through hole 34 is a hole penetrating the top and bottom of the spacer 30, that is, the two notches 33a and 33b, and has a long slot shape to accommodate the width of the strap. As shown in FIG. 4, the through hole 34 does not have a constant thickness in the thickness direction of the slot, but increases in thickness from the center (thickness: t) of the through hole toward the notches 33a and 33b (thickness: t1). It has a shape. This is to prevent the strap 40 from being bent by the edge at the notches 33a and 34b when the strap 40 fixes the spinous process 3 and the spacer 30 through the through hole. . This reduces the wear of the strap 40 and does not require excessive force when pulling the strap 40.

FIG. 5 is a right side view of the spacer 30 of FIG. 4 as viewed in the direction (D) of FIG. 4. When the spacer 30 is inserted between spinous processes, it is inserted in the direction (E). In addition, since the angles of the first notch 33a and the second notch 33b should be determined according to the shape of the spinous process of the patient, they may not be horizontal when viewed from the side view. In consideration of the general spinous process shape, the angles of the notches 33a and 33b are formed to widen toward the insertion front part from the insertion rear part.

The spacer 30 is preferably made of a metal that is harmless to the human body, such as titanium.

FIG. 6 is a plan view viewed in the direction (F) of FIG. 4. FIG. As shown in FIG. 6, the through hole 34 penetrates the notch 33a, and the thickness t2 of the portion connected to the notch 33a is larger than the thickness t1 at the center of the through hole 34. The central thickness t1 of the through hole 34 is formed to be at least twice the thickness of the strap 40 (t in FIG. 7), and the width w1 of the through hole 40 is the width of the strap 40. (W in Fig. 7) is formed to have a size enough to pass.

7 is a perspective view of the strap 40 of the intervertebral insert according to the present invention. The strap 40 serves to bind and fix the two spinous processes 3a and 3b and the spacer 30 in an eight-character shape. The strap 40 actually includes a band 43 which serves to bind the spacer and the spinous process, hooks 41 and 44 formed at both ends of the band 43, and the hooks 41 and 44, respectively. It may be composed of connecting parts 42 and 45 connecting the band 43.

The hooks 41 and 44 are divided into a first hook 41 and a second hook 44. The first hook 41 serves to penetrate the interpolar ligaments near the upper portion of the upper spinous process 3a, and its shape is determined according to the shape of the upper part of the upper spinous process 3a. Then, the second hook 44 serves to penetrate the interpolar ligaments near the upper portion of the lower spinous process 3b, and the shape thereof is determined according to the shape of the upper part of the lower spinous process 3b. Thus, in general, the size and radius of curvature of the first hook 41 is larger than the size and radius of curvature of the second hook 44.

The band 43 has a relatively large width w and a relatively small thickness t, the ends of which are narrow in width so that they can be connected to the hooks 41 and 44. The band 43 may be made of a material harmless when inserted into the human body having a predetermined friction or more, such as materials such as synthetic fibers such as polyester, natural leather, artificial leather and the like.

8 shows the work required before inserting the spacer 30. First, the ligamental ligament 5 of the part into which the spacer 30 is to be inserted is lifted up, and the interpolar ligament 7a of the part is removed. Then, the spacer 30 may be inserted into the space between the two spinous processes 3a and 3b from which the inter ligament 7a is removed.

FIG. 9 is a view showing a state in which the interpolar ligament at the insertion position of the spacer 30 is removed from the dorsal side of the human body through the process illustrated in FIG. 8. As shown, the interultra ligament between the spinous process 3a and the spinous process 3b was removed. After that, the strap installation process will be illustrated by separating only the part (G) of FIG. 9 for convenience.

10 to 15 illustrate a process of installing a spinal insert according to the first embodiment of the present invention.

First, let the first hook 41 penetrate the through hole 34 of the spacer 30, and then the first hook 41 penetrates through the upper portion of the upper spinous process 3a of the upper interultra ligament 7b. (See FIG. 10). The first hook 41 passes through the interultra ligament removal portion 9 so as to cover the lower portion of the upper spinous process 3a (see FIG. 11). The first hook 41 then passes through the through hole 34 once again (see FIG. 12). As shown in FIG. 12, the spacer 30 is inserted into the interultra ligament removal part 9 in a state where the band 43 of the strap 40 is wrapped around the upper spinous process protrusion 3a.

FIG. 13 is a shape in which the spacer 30 is inserted into the interultra ligament removal portion 9 in this manner. Here, the band 43 surrounds the upper spinous process 3a, and the two hooks 41 and 44 are located in opposite directions when viewed from the lower spinous process 3b. In this way, the spacer 30 is inserted between the two spinous processes 3a and 3b, and the spinous processes 3a and 3b are held by the notches 33a and 33b facing each other in the spacer 30, respectively. However, due to the various bending actions of the spinal column, each spinous process may have some momentum in the left and right directions, so that the spacer 30 must be fixed by the strap 40. In the state as shown in Figure 13 by pulling both ends of the band 43 so as to surround the upper spinous process (3a).

In the state where the spacer 30 is inserted as shown in FIG. 13, as shown in FIG. 14, the second hook 44 penetrates near the lower portion of the lower spinous process 3b of the lower interultra ligament 7c. Thereafter, as shown in FIG. 15, the first hook 41 and the second hook 44 are removed and the band 43 is pulled at both ends of the band 43 so as to securely wrap the lower spinous process protrusion 3b. , Knots 46 are formed at both ends of the band 43. In this case, the shape of the band surrounding the spinous processes 3a and 3b and the spacer 30 is in the form of '8'.

FIG. 16 is an enlarged view of part (H) of FIG. 15. As shown in FIG. 16, the band 43 is in close contact with the spinous processes 3a and 3b and the flanges 31a, 31b, 32a, and 32b without direct contact.

The spinous processes 3a and 3b are hard bone tissues, and the spacer 30 is made of a metal material. Therefore, when the spinous processes 3a and 3b come into direct contact with the spacer 30, the spinous processes 3a and 3b may be worn or cracked. may occur. In addition, the shapes of the spinous processes 3a and 3b and the flanges 31a, 31b, 32a, and 32b of the spacer 30 do not completely coincide in shape so that point contact may occur, and therefore, unevenness in the part making point contact. Stress can be formed.

As in the present invention, the spinous processes 3a and 3b and the spacer 30 do not directly contact each other, and the band 43 therebetween buffers, and the bin between the spinous processes 3a and 3b and the spacer 30 is not present. Since no space is generated, no point contact occurs. In addition, since the through holes 34 are formed vertically, the spinous processes 3a and 3b and the spacer 30 may be more firmly fixed and bound.

On the other hand, Figure 17 shows the spacer 30 and the strap 40 according to the second embodiment of the present invention, that is, the shape of the spinal insert is installed. In FIG. 14, if the length of the band is secured enough, the second hook 44 again penetrates through the upper near portion of the upper spinous process 3a of the upper interultra ligament 7b, and the first hook 41 Again, the lower interproximal ligament 7c can be penetrated through the lower portion of the lower spinous process 3b. Then, when the hooks 41 and 44 are removed and the knot 47 is formed, the outer portion of the '8 letters' is wrapped around the '8 letters' as shown in FIG. 17. As such, the number of zero characters may be multiple times.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

According to the present invention, there is no need to remove the incidental interultra ligament, reducing the physical burden on the patient receiving the procedure, there is an advantage that the procedure is easy from the point of view of the doctor.

In addition, according to the present invention, by making the band is in close contact between the spacer and the spinous process without direct contact, there is an effect that can reduce the impact and stress applied to the spinous process.

Claims (8)

A spinal insert comprising a spacer having two opposing notches for receiving spinous processes of two vertebrae, and a strap for securing the two vertebrae and the spacer, The spacer includes a through hole formed through the two opposing notches to pass through the strap, The strap is inserted through the through-hole by inserting the spacer and the two spinous process in the shape of eight characters, the spinal insert, characterized in that for fixing the two vertebrae and the spacer. The method of claim 1, wherein the fixing is And inserting both ends of the band constituting the strap into a portion of the band tied in the eight-character shape. delete The method of claim 1, And a thickness t1 at a central portion of the through hole is smaller than a thickness t2 of the through hole at a portion where the through hole and the opposite notch are connected. The method of claim 1 wherein the spacing between the opposite notches is Spinal insert, characterized in that the smaller toward the insertion back portion from the insertion front portion of the spinal insert. The method of claim 1, wherein the strap And a band for binding and fixing the spacer and the two spinous processes, and a first hook and a second hook respectively connected to both ends of the band to penetrate the interultra ligament. The method of claim 1, The material of the spacer is a spinal insert, which is metal. A spinal insert comprising a spacer having two opposing notches for receiving spinous processes of two vertebrae, and a strap for securing the two vertebrae and the spacer, The spacer includes a through hole formed through the two opposing notches to pass through the strap, The straps pass through the through-hole and the spacer and the two spinous processes wound in the form of eight characters, and then surrounds the outer shape of the eight-characters to form a zero-character, characterized in that to fix the two vertebrae and the spacer Spinal Inserts.

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