WO2010090428A2

WO2010090428A2 - Spinal support rod comprising artificial spinal support and ball joint connector

Info

Publication number: WO2010090428A2
Application number: PCT/KR2010/000635
Authority: WO
Inventors: 유은희
Original assignee: Yoo Eun Hee
Priority date: 2009-02-03
Filing date: 2010-02-02
Publication date: 2010-08-12
Also published as: WO2010090428A3

Abstract

A spinal support rod comprising an artificial spinal support and a ball joint connector according to the present invention is configured in a structure in which the central part is flexible, thereby helping to secure movement of the vertebral joint within a safe range and securing considerable free movement after a surgical operation. In addition, the present invention effectively prevents spine-related diseases from occurring after a surgical operation by dispersing the overload of adjacent vertebral joints caused by fixation of the surgical site.

Description

[Revision according to Rule 26.04.2010] 2010Spinal support rod with artificial spinal support and ball joint connection

The present invention relates to an artificial spinal support, and more particularly, to an artificial spinal support used to support a state in which a vertebral bone constituting a human spine is misaligned or damaged, and is corrected or inverted by a surgical method. And a ball joint connection having a ball joint connection of a structure that can be bent at an angle by providing a ball joint connection in the middle of the length.

The human spine is composed of a number of vertebrae belonging to a staple, which are connected by a lumbar intervertebral disc (also called a lumbar intervertebral disc, also called a lumbar intervertebral disc). Depending on the location of the spine in the neck of the cervical spine, the cervical spine sub-thoracic spine and thoracic spine, lumbar spine, etc. may be divided.

The vertebral discs are disc shaped medullary bones between the vertebrae, more specifically, the vertebral bodies, which are the cylindrical parts of the vertebrae. A part that acts as a cushion between vertebrae, absorbs shock, and facilitates joint movement between vertebrae. The vertebrae have structural properties through these vertebral discs between the vertebrae. As a result, a flexible bending motion can be obtained.

On the other hand, the vertebrae have a cylindrical vertebral body, which is a part directly connected with the adjacent vertebrae and the vertebral discs interposed therebetween, and various protrusions extending in the back direction from the vertebral body. The projections vertically protruding into the spinous process are called spinous processes, and the two spinous processes projecting radially in the dorsal direction are located symmetrically on the left and right sides of the spinous process.

As can be seen that the name is called separately, the cervical spine, thoracic vertebrae, lumbar vertebrae, etc. that make up the spine may have a slightly different shape in the shape, number, etc. of the above-described projections, but the outer surface of the vertebral body and the dorsum direction from the vertebral body In the portion surrounded by the protrusions formed to extend, the spinal cord, which is an important organ for transmitting a signal to each part of the body, extends from the brain and passes through the spinal cord, which is a space for protecting it.

Therefore, the human spine is a central pillar for supporting the body, and plays an important role as well as protects the spinal cord, which is an important organ. Not only that, but also various neurological symptoms are very likely to occur.

Many of these spine-related diseases are either treated or treated by surgical procedures, for example, the annulus fibrosus that surrounds part of the nucleus pulposus due to increased pressure in the vertebral discs due to narrowing of adjacent vertebral bodies. Intervertebral disc herniation, which is a disease that ruptures protrudes or escapes into the spinal canal and compresses the spinal nerve, may be treated by simple surgery, such as kinesiology or laser removal of the prominent part, if the condition is mild. If accompanied, surgery may be performed to restore the space between the narrowed vertebral bodies to their original position and to install a implant to support this condition.

In addition, when a fracture occurs in the vertebral body, or a part of the vertebral bone is dislocated due to an accident or other cause, even in the case of severe scoliosis, in which the vertebrae are severely deformed from its original form, the vertebral bone is corrected or the damaged vertebrae are removed. Surgery may be performed to install the implant as described above for the purpose of protection and support.

An example of attachment of the implant by this type of conventional surgery is shown in FIG. 9.

FIG. 9 is a view illustrating a state in which a prosthesis is mounted in a lateral direction of the spine, and as shown in FIG. The vertebral screws 100 are inserted into and fixed to the adjacent vertebrae, respectively, and the heads of the screws 100 fixed to the adjacent vertebrae of the upper and lower vertebrae, respectively, in order to maintain the corrected or treated structure firmly. Rod holding means having a structure capable of gripping the rod-shaped rod 200 is formed, through which the rod 200 is firmly fixed over two or more vertebrae in the longitudinal direction parallel to the longitudinal direction of the spine.

On the other hand, for a more stable support structure, it is common that the screw 100 and the rod 200 are mounted in the same structure on the opposite side not shown in the drawings, wherein the screw 100 projects radially in the dorsal direction from the vertebral body. It is fixed in a symmetrical form so as to face the vertebral body in the vicinity of the formed two traverses, and more specific structures thereof can be understood through FIG. 1 and the like, which will be described later.

In addition, in the illustrated form, a rod is installed to support three or more vertebrae as described above in the case where only two vertebral bodies are related to the prosthesis, or when the injury and correction range are wide to treat vertebral fractures and dislocations. For example, to treat scoliosis with a wide range of spines, implants of the type as shown may be mounted over almost all ranges of the spine.

By installing the screw 100 and the rod 200 in the structure as described above, to correct the position of the wrong vertebrae or to restore the spacing between the vertebrae, and to support in a state in which the force applied to the fractured vertebrae is dispersed Although it is possible to alleviate and treat various diseases and neurological symptoms resulting from abnormalities of the spine by giving functions such as giving, etc., the vertebral joints of the corresponding parts where the rods, which are usually made of a hard alloy material, are installed, are hardly bent. Since it is fixed, it is impossible to perform the basic bending motions of the original vertebral joints, which greatly limits the degree of freedom in the movement of the patient undergoing surgery, as well as the effect of alleviating the impact of the natural bending of the spine. I can not feel great discomfort in the body.

In order to make up for this drawback, a rod having a corrugated shape in the center part is provided in place of a simple rod-shaped rod, but it is also provided in an integrated form, so that a strong external force due to some bending It is only to be able to expect the role of mitigating the impact of the spine due to the back slightly, and expect the effect to allow the movement of the spinal joint according to the patient's willingness to bend his back. It is impossible to do.

In other words, if a fracture occurs in the vertebral body and the vertebral body is to be firmly fixed to prevent movement of the vertebral body, the surgery for intervertebral disc prolapse to support the vertebral body with a wider interval or for the correction of misaligned bones. In surgery or the like, it is desirable to provide support means to allow each vertebrae to remain in place after surgery and to allow for unreasonable bending, particularly as in the corrective surgery for scoliosis described above. Given the pain suffered by patients undergoing surgery in which most of the range is firmly fixed, the need for a support means capable of allowing the bending of the spinal joint even after surgery will be more strongly demanded.

The present invention has been made to overcome the above problems of the prior art, while being firmly supported on the vertebrae to be treated by being attached to the spine via a screw or other fixing means, while allowing basic bending movements of the vertebral joints, etc. It is an object of the present invention to provide an artificial spinal support having a structure that can be achieved.

In addition, even in the case of surgery for spinal prosthesis, in order to ensure the freedom of movement due to the bending of the spine and to alleviate the impact so as to prevent the overload of the vertebral joints around the surgical site, the center of the length is all around. It is an object to provide a spinal support rod having a bendable ball joint connection.

In order to achieve the object as described above, the artificial spinal support according to the present invention, in order to hold a rod fixed to one vertebrae using a screw or other fixing means, the receiving groove that can be accommodated, seated And, when the rod is seated in the receiving groove is composed of at least one or more support pieces including a rod holding portion having a fastening means for fixing the rod, each rod is fixed to the adjacent vertebral body The adjacent support pieces held by each other form a connection portion connecting the mutually abutting portions, wherein the connection portion is adjacent to the support piece to secure a seam movement about the connection portion with the adjacent support pieces interconnected. Injecting and receiving the protrusions in contact with each other from one of the support pieces The bulge receiving part of the form consists of the structure formed in the other support piece.

In this case, the fastening means may be a fastening screw capable of tightening and pressing the rod against the seated surface in a state in which the rod is seated in the receiving groove.

At this time, the bulge has a spherical surface formed in the shape of a spherical protrusion bulged in the direction of the adjacent support piece, the dolce receiving portion for receiving the dol is spherical so as to conform with the spherical dol Concave spherical receiving portion of the concave groove shape concave in shape, the connecting portion may be made of a ball joint (ball joint) connection structure.

Further, the spherical protrusion and the concave spherical receiving portion may be provided together at a symmetrical position in one of the support pieces.

Furthermore, in the connecting portion, the spherical protrusions, which are conformally accommodated in the concave spherical accommodating portion, penetrate the inner surface and the adjacent surface of the concave spherical accommodating portion, in order to prevent them from being arbitrarily separated from the concave spherical accommodating portion. The through hole is formed, the coupling shaft of the coupler having a head having a larger area than the through hole and the coupling shaft extending in the vertical direction from the center of the head surface may be fixed to the spherical protrusion via the through hole. .

Further, the spherical protrusions protruding from the support piece have a structure separated from the support piece so as to reciprocate in the protruding direction from the support piece, and at the lower end of the protruding opposite direction, relative to the support piece. While setting the connection position, elastic means can be connected, which gives an elastic force to restore to the original position when moved by an external force.

On the other hand, the connection portion may further include elastic means for imparting an elastic restoring force with respect to the relative connection distance of the adjacent adjacent support pieces interconnected.

The spinal support rod having a ball joint connection according to the present invention is a spinal support rod which is used to support the vertebral structure by fixing both ends to two adjacent vertebrae in a surgical manner, wherein the rod is in the longitudinal direction. In the central portion of the abutment, the abutting portions are to be bent in all directions, consisting of a spherical protrusion consisting of a spherical surface and a concave spherical receiving portion having a spherical inner surface of curvature that matches the spherical surface of the spherical protrusion. The ball joint connection part of the structure is formed, and it is comprised so that it may be divided into the 1st main body which is the side in which the said spherical protrusion was formed, and the 2nd main body which is the side in which the said concave spherical accommodating part was formed.

In the ball joint connecting portion, in order to prevent the spherical protrusion which is conformally received in the concave spherical accommodating portion from being arbitrarily separated from the concave spherical accommodating portion, penetrates the inner surface and the adjacent surface of the concave spherical accommodating portion. The spherical stone is formed by the coupling shaft of a coupling tool having a through hole formed therein, the coupling shaft having a head having a diameter larger than the longest diameter of the through hole and a coupling shaft extending in a vertical direction from the center of the head surface. It may be configured to be fixed to the tongue.

The spherical protrusion has a structure that is not randomly separated from the concave spherical accommodating portion, which is conformally accommodated in shape, and is provided in a structure basically separated from the first main body to linearly reciprocate in a direction parallel to the longitudinal direction of the rod. It may be a structure connected to the first body to be movable.

In this case, when the position between the first main body and the spherical protrusions connected to the first main body so as to be linear reciprocating movement is moved from the basic position, an elastic means for restoring the original position can be restored to the basic position. It can be configured to include.

Further, the spherical protrusion is formed with a locking jaw perpendicular to the moving direction on the opposite side surface of the spherical portion that is in contact with the concave spherical receiving portion, and the first main body receives the concave spherical surface with the locking jaw formed therein. While receiving one end of the part to guide the linear reciprocating movement of the spherical protrusion, while exposing the spherical portion of the spherical protrusion through the opening while the engaging projection is caught on the edge of the opening, the spherical protrusion has the first body. It may be configured to include a chamber, a breakaway barrier wall is formed to prevent separation from.

At this time, in the chamber, when the spherical protrusion is moved in a predetermined direction, it may be configured to further include an elastic means for the original position to restore to the default position.

On the other hand, the first main body and the second main body are formed with support jaws each having a surface facing each other, and between the support jaws of the first main body and the support jaws of the second main body by external force An elastic means for refraction recovery may be interposed to restore the ball joint connection portion to a straight line.

In this case, the elastic means for restoring the refraction may be a high elastic polymer resin material, or more specifically, may have a cylindrical shape of an annular cross section made of a polyurethane material.

By the above configuration, the artificial spinal support according to the present invention has the following effects.

First, as in the conventional surgery to support the adjacent vertebrae by the rod, when mounted to support the adjacent vertebrae by the artificial vertebral support according to the present invention, the space between the narrowed vertebral bodies is restored or supported, It can serve as a stable support for dispersing the pressure of the vertebrae, or the function of maintaining the vertebrae from the original position after the vertebrae are removed or the vertebral state is corrected, as well as the conventional method using the rod Has the effect of allowing movement of the vertebral joints at the surgical site, which was never expected.

Second, the operation is possible to the extent that the mounting step of the artificial spinal support according to the present invention is added while using the configuration and the steps of the screw, rod, etc. used in the conventional surgery method almost as it is, only adding a relatively easy step compared to the conventional In addition, it is possible to bend the vertebral joint at the surgical site in the surgical patient to increase the degree of freedom of activity and to give a dramatic synergistic effect to eliminate the discomfort from the fixation of the spine.

On the other hand, the spinal support rod having a ball joint connection according to the present invention, compared to the conventional spinal support rod only serves to fix the vertebral joint of the surgical site, to maintain the distance between the vertebral bodies at normal intervals, While supporting the structure of the spine as a normal structure, it is formed in a structure that can bend and reconstructed to help ensure the movement of the spinal joints within a safe range, to ensure a considerable degree of freedom in movement even after surgery In addition, the overload of peripheral vertebral joints caused by fixation of the surgical site can be distributed, thereby effectively preventing postoperative spinal diseases.

1 is a view showing a form in which a screw is fixed to the vertebrae as a preliminary step for mounting another artificial spinal support according to the present invention,

Figure 2 is a view showing a form in which the rod is fixed to the screw of Figure 1 as a preliminary step for mounting the artificial spinal support according to the present invention,

3 is a perspective view illustrating a state in which an artificial spinal support is mounted on a rod according to the first embodiment of the present invention;

4 is a perspective view illustrating a state in which the artificial spinal support of FIG. 3 is mounted on a rod;

5 is a side cross-sectional view of the artificial spinal support of FIG. 3,

6 is a view showing a state in which the artificial spinal support of Figure 3 mounted on the spine,

7 is an exploded perspective view showing a state in which the artificial spinal support according to the second embodiment of the present invention is mounted;

8 is a perspective view illustrating a state in which the artificial spinal support of FIG. 7 is mounted.

9 is a view showing a state in which the support rod is a conventional general shape implant in the side direction of the spine,

10 is a perspective view of a spinal support rod according to a third embodiment of the present invention;

11 is a cross-sectional view of the spinal support rod of FIG.

12 is an exploded perspective view of the spinal support rod of FIG. 10;

13 is a cross-sectional view of the spinal support rod according to a fourth embodiment of the present invention,

14 is a perspective view of an elastic means for refraction recovery that can be applied to the spinal support rod according to the present invention,

15 is a cross-sectional view of the spinal support rod according to the fifth embodiment of the present invention;

16 is a cross-sectional view schematically showing an example of the ball joint connection that can be applied to the present invention.

Artificial spinal support according to the present invention, in order to grip the rod fixed to one vertebra using a screw or other fixing means, the receiving groove that can be accommodated, seated, and the rod is seated in the receiving groove And at least one support piece configured to include a rod gripping portion having a fastening means for fixing the rod, wherein the adjacent support pieces gripping one rod each fixed to an adjacent vertebral body are mutually provided. A connecting portion connecting the abutting portion, wherein the connecting portion is in contact with each other from one of the adjacent supporting pieces to secure a seam movement about the connecting portion in a state where the adjacent supporting pieces are connected to each other. A bulge receiving part of the form which receives and injects the dolbulge which was bulging out to the other support piece It consists of the generated structure.

Hereinafter, the configuration of the spinal support rod having the artificial spinal support and the ball joint connection according to the present invention described above will be described in more detail with reference to the accompanying drawings showing preferred embodiments of the present invention.

On the other hand, the components having the same or similar functions as in the above-described prior art will be described with the same reference numerals.

First, the artificial spinal support according to the present invention will be described in detail. In the description with reference to the drawings, in order to clarify the similarities and differences between the present invention and the prior art described above will be described step by step the process of mounting the artificial spinal support according to the present invention to the human body in a surgical method, accordingly The accompanying drawings are also arranged in the poetic order of the surgical procedure. At this time, with respect to the configuration of the artificial spinal support according to the present invention, will be concentrated to the part referring to the step of mounting the artificial spinal support.

1 is a preliminary step for mounting an artificial lumbar support in accordance with the present invention, wherein the vertebral body is from the portion of the traverse 3 where the two screws 100 are symmetrical in the same manner as mentioned above when describing the prior art. The state inserted and fixed in the (1) direction is shown.

The fixing method of the screw 100 is almost the same as the method used to apply the conventional surgical method to fix the rod 200 to the longitudinal, at this time, the screw head 110 to grip and secure the rod 200 It has a structure for.

On the other hand, when inserting and fixing the screw 100 in this form, care must be taken not to damage the spinal cord located in the bore 5.

2 is also a preliminary step for mounting the artificial spinal support according to the present invention, showing a state in which the rod 200 is mounted on the screw head portion 110.

Unlike the rod 200 in the conventional manner for spinal correction, the rod 200 is longitudinally mounted to two or more adjacent vertebrae along the longitudinal direction of the vertebra, in the present invention, one vertebra in the form as shown in FIGS. Both ends of the rod 200 are fixed to the screw head portion 110 of each of the two screws 100 fixed to the bone in a transverse direction.

At this time, in order to mount and fix the rod 200, a method of mounting and fixing the rod 200 in the groove for accommodating the rod formed in the screw head 110 as shown in FIG. Since this is a commonly used method for fixing the rod 200 in the prior art, a detailed description thereof will be omitted.

After the rod 200 is fixed transversely with respect to one vertebra as described above, as shown in FIG. 2, one support piece constituting the artificial vertebra support according to the present invention is connected to the rod 200. It will be firmly gripped, the configuration and coupling method of the artificial spinal support and the support pieces constituting it will be described in more detail with reference to FIGS. 3 to 5, 7 to 8, and the like.

On the other hand, if necessary to mount the artificial spinal support as shown in Figure 2 may be removed the spinous process (2) and the like shown in Figure 1, having a specific curvature rather than the straight rod 200 as shown U-shaped rod or the like may be selected.

3 to 5 are views of the artificial spinal support according to the first embodiment of the present invention, Figures 3 to 4 is a step of holding the rods 200 by the artificial spinal support according to the first embodiment of the present invention 5 is a cross-sectional view showing a clear configuration of the artificial spinal support according to the first embodiment.

Artificial spinal support according to the first embodiment of the present invention is composed of at least two or more support pieces (11, 12), as shown in Figure 3, etc., in relation to the number of vertebrae involved in surgery, etc. Accordingly, three or

more support pieces

11 and 12 may be connected to each other.

In the first embodiment, each of the

support pieces

11 and 12 is formed in a structure capable of gripping one rod 200, and a rod gripping portion for this configuration may accommodate the rod 200 to be seated thereon. Fastening screw which is a fastening means of the structure for tightening and fixing the receiving groove 15 and the rod 200 seated in the receiving groove 15 in the form as shown in FIG. (25), a more detailed configuration thereof will be described again with reference to FIG.

That is, in FIGS. 3 to 5, when the upper support piece in the drawing is referred to as the first support piece 11 and the lower support piece is referred to as the second support piece 12, the first support piece 11 is operated. Among the adjacent vertebrae of interest, the rod 200 fixed to the upper vertebra is gripped, and the second support piece grips the rod 200 fixed to the lower vertebra.

In view of such a structure, in the case of the artificial spinal support according to the first embodiment of the present invention composed of a combination of the first support piece 11 and the second support piece 12, it is fixed in the longitudinal direction in the prior art It can be assumed that the role of the rod 200 will be.

However, in order for the artificial spinal support according to the present invention to serve as a rigid support like a conventional rod, the first support piece 11 and the second support piece 12 constituting the artificial spine support must have a connection in an appropriate structure. The structure of the connection unit and the like will be described in detail with reference to FIG. 5.

Basically, the connection structure to be considered in order for the artificial spinal support according to the present invention composed of separate support pieces to serve as a support rod like a conventional rod may have a slight difference depending on the purpose of the surgery.

For example, in the case of surgery to simply widen and maintain the narrow spacing of adjacent vertebrae, due to the structural characteristics of the support pieces that firmly grip the rods 200 fixed to each vertebra, their connections are at least mutually What is necessary is just to have the structure which prevents a shift | offset | difference, and can ensure a some bending according to the objective of this invention.

To this end, when the connecting portion between the supporting pieces has a structure in which the protrusions protruding from one supporting piece toward the connecting portion are accommodated by the other supporting piece, it is possible to simultaneously prevent the mutual displacement of the supporting pieces and to ensure movement at the connecting portion. have.

On the other hand, Figure 5 specifically shows the configuration of the connecting portion according to the first embodiment of the present invention in more detail such a structure, as shown in Figures 3 to 4, the first from the second support piece 12 The protrusion formed in the connecting direction with the support piece 11 is a spherical protrusion 16 having a hemispherical surface, and the protrusion receiving portion of the first support piece accommodating the spherical protrusion 16 is the spherical protrusion. And a concave spherical receiving portion 17 that conforms to the shape thereof.

In this way, a spherical surface-engaged connection structure is called a ball joint connection structure, which effectively prevents misalignment at the connection portion due to the engagement of irregularities, but also restricts the orientation of the spherical surface without limiting the direction. It is a connection structure that has a great advantage in that free bending at is possible.

On the other hand, as shown in the first support piece 11 and the second support piece 12 may be made of the same structure, and thus the position symmetrical in the longitudinal direction on the drawing in one support piece (11, 12) Each of the spherical protrusions 16 and the concave spherical accommodating portion 17 may be provided together.

The advantage of this structure is that the respective support pieces constituting the artificial spinal support according to the present invention serve as a bulge receiving portion for receiving the bulges of the adjacent support pieces, and at the same time, the bulges are introduced into the other support pieces. By being configured to serve as a protruding part, it means that the support pieces can be combined anywhere regardless of the position of the top, the center, or the bottom of the artificial spinal support which is connected and constituted, in theory, the support piece It is possible to configure the artificial spinal support by the infinite extension structure of these.

In addition, the length of each support piece from the bulge to the bulge receiving part can be freely selected and applied according to the physical condition even if only a few kinds of grades are provided according to the standardized spine length of the person, thus supporting the same structure. We can also expect aspects of mass production.

On the other hand, in a situation where the risk of connection misalignment between support pieces should be extremely minimized, a means for firmly securing the connection between adjacent support pieces can be further added while allowing bending by the ball joint structure.

To this end, as shown in FIG. 5, the connection part of the first support piece 11 and the second support piece 12 passes through the inner surface and the adjacent surface of the concave spherical accommodating portion 17. Is formed, and a screw-shaped coupler 30 having a head having a larger area than the through hole 27 and a coupling shaft extending in a vertical direction from the center of the head surface, the coupling shaft has the through hole ( 27 may be fixed to the spherical protrusion 16 in the form of via.

With this configuration, bending at the connecting portion is possible, but arbitrary separation in the longitudinal direction of the first support piece 11 and the second support piece 12 in the drawing can be effectively prevented.

At this time, as shown in Figures 3 to 5, etc., by assembling the portion of the spherical protrusion portion 16 with the coupling hole 30 of the spherical protrusion portion 16 by the length corresponding to the thickness of the through hole 27, the firmness, At the same time, the bending action at the connection can be made to achieve a smooth and effective connection.

Meanwhile, in order to further secure the degree of bending of the vertebral joint to which the artificial spinal support according to the present invention is applied, as shown in FIG. 5, the elastic restoring force in the longitudinal direction in the drawing is shown between the connection components fixed in the longitudinal direction. An elastic means 40 may be further added to impart this.

As described with reference to the drawings and embodiments, the artificial spinal support according to the present invention is usually located close to the outer surface of the spine in the dorsal direction, even if the connection is fastened through the coupler 30 Due to the connection structure capable of the bending operation as described above, bending in the left and right lateral directions of the human body is relatively freely allowed even after surgery.

However, in order to be able to smoothly bend in various directions even in this state, there is a problem that the above-described ball joint connection structure is somewhat insufficient, as a structure for solving this, as shown in the figure, the

support piece

11, 12 and the spherical protrusion 16 configured to be linearly movable in the

support pieces

11 and 12 in a structure independent from the 12, and the spherical protrusion 16 is connected to the

support pieces

11 and 12, Elastic means 40 such as a coil spring connecting the lower end of the spherical protrusion 16 and the

support pieces

11 and 12 to impart an elastic restoring force to the movement of the spherical protrusion 16 is configured in the support piece. It is desirable to add as.

However, in the case of the artificial spinal support to which the elastic means 40 is applied, it can be applied in the case where it is more important to ensure the smooth bending operation of the spine after surgery, unlike in this case, in a case where a more stable support structure is required In addition, it would be desirable to provide an artificial spinal support according to the present invention in various forms so that the elastic means 40 can be selectively used.

Meanwhile, the fixing structure between the rod 200 and the

support pieces

11 and 12 described above is more clearly shown through FIG. 5. That is, the rod 200 may be retracted through the receiving groove 15 to be seated as shown, and in this case, the fastening screw 25 as the fastening means may be pressed onto the rod 200 by pressing the rod 200. The supporting pieces (11, 12) of the role to be firmly fixed.

The rod gripping portion by such a configuration can be changed and designed in various forms, Figures 7 to 8 is an artificial spinal support according to the second embodiment of the present invention, and the first embodiment and the rod holding portion An artificial spinal support is shown having support pieces 11 ′, 12 ′ of somewhat different structure in the shape of the receiving groove 15.

In the second embodiment, the rod 200 is first gripped and fixed to the support pieces 11 'and 12' for the convenience of surgery, and then the rod 200 is fixed to the screw 100 fixed to each vertebra. A change in the mounting order may occur, and the structural change of the support pieces 11 ′ and 12 ′ resulting in such a change is only an attempt to improve manufacturing convenience of the artificial spinal support according to the present invention, and the present invention. It will be readily apparent that there is no difference in the basic concepts of construction to achieve the purpose of the.

It is shown in Figure 6, configured as described above, in which the artificial lumbar support in accordance with a preferred embodiment of the present invention is fully mounted to the spine in a surgical manner via appropriate steps.

Figure 6 is a form viewed from the back of the spine, as shown, the artificial spinal support according to the present invention is preferably mounted in accordance with the center of the spine, by this coupling structure, the spacing between the vertebral bodies as desired for surgery While maintaining the basic role, such as correcting the displaced or damaged spine, it can provide an effect that can allow maximum bending between the vertebral bodies.

Next, with reference to the accompanying drawings showing preferred embodiments of the spinal support rod having a ball joint connection according to the present invention will be described in detail.

10 is a perspective view showing the appearance of the spinal support rod having a ball joint connection according to a third embodiment of the present invention.

In the case of the spinal support rod according to the third embodiment, it is formed in a structure capable of performing substantially the same function as the conventional rod-shaped rod described in FIG. 9, and thus has a structure that can be replaced in the conventional surgical method.

On the other hand, the structure of the third embodiment is a structure in which both ends of the spinal support rod can be fixed via a screw 100 fixed to two adjacent vertebrae respectively, but within the scope of the present invention, Of course, changes in the configuration such that at least one end of the spinal support rod is secured to the vertebra in other ways can also be readily performed.

In addition, the illustrated example shows a state in which one surface of the rod is chamfered flat for stable coupling with the screw 100. When the screw tightening of the screw 100 is performed against the chamfered portion, the contact surface is narrow. Compared to the curved surface, the risk that the fastening state of the screw 100 is released is greatly reduced.

On the other hand, as the largest apparent difference from the above-described conventional rod-shaped spinal support rod, Figure 10 shows a state in which a ball joint connection portion formed of a bendable structure in the central portion of the spinal support rod according to the third embodiment.

By forming the ball joint connection in the center of the length, the spinal support rod according to the present invention can be divided into the first body 201 and the second body 202 based on the connection, in the present invention optionally ball joint connection The first main body 201 of the part having the spherical protrusion 16 and the concave spherical receiving part 17 having the inner side corresponding to the spherical protrusion 16 of the second main body ( 202).

Specific structures and other coupling structures of the ball joint connection unit will be described in more detail with reference to FIGS. 11 to 12.

11 is a cross-sectional view of the spinal support rod of FIG. 1.

As shown, the ball joint connecting portion according to the third embodiment includes a portion of a spherical surface of the spherical protrusion 16 and a spherical surface of the spherical protrusion 16 of the concave spherical receiving portion 17. The concave spherical inner surfaces of the corresponding curvatures are constructed to abut each other, and preferably, in order to prevent the spherical protrusion 16 from being arbitrarily separated from the concave spherical receiving portion 17, the concave as shown. The through hole 27 penetrating the inner surface and the adjacent surface of the spherical receiving portion 17 is formed, the head consisting of the area of the diameter larger than the longest diameter of the through hole 27 and the vertical direction from the center of the head surface The coupling shaft of the coupling sphere 30 having a coupling shaft extended to the through-hole 27 may be configured to be fixed to the spherical protrusion 16.

On the other hand, the spherical protrusion 16 is separated from the concave spherical accommodating portion 17 to prevent the ball joint connecting portion from being disassembled, in addition to the structure shown in FIG. 11 using the coupling tool 30. As illustrated in FIG. 16, a general ball joint configuration method of constructing the concave spherical accommodating part 17 may also be applied to the structure surrounding the entire spherical protrusion having a nearly spherical shape in the outer part, but assembling ease and structure The structure shown in Fig. 11 is preferred in view of stability, ease of setting bending angle and limitation.

On the other hand, in view of the characteristics of the spinal joint that can be bent in various directions, in order to give a higher degree of freedom, the spinal support rod according to the present invention in addition to the structure that can be bent in the various directions described above stretch in the longitudinal direction It is preferable to further provide a possible structure.

With respect to this structure, in order to allow the spherical protrusion 16 to reciprocate linearly with respect to the longitudinal direction of the first body 201, in FIG. 11, the spherical portion opposite to the concave spherical receiving portion 17 is opposite. The locking jaw 56 is caught by the separation blocking wall 66 formed at the edge of the opening 60 together with the spherical protrusion 16 formed with the locking jaw 56 protruding perpendicularly to the moving direction on the lateral side. Thus, the chamber 70 is configured to receive one end of the concave spherical accommodating portion 17 to guide the linear reciprocating movement while preventing the spherical protrusion 16 from being separated from the first body 201. Shown.

The advantage of such a chamber 70 is that it is easy and stable to guide and limit the linear reciprocation of the spherical protrusions 16 using the space in the chamber 70, and the In addition, it is also easy to add the elastic means 71 for restoring the original position for restoring to the basic position.

That is, as shown, as well as a part of the spherical protrusion 15 in the chamber 70, by mounting the elastic means 71 for restoring the original position, the spherical protrusion 15 moves in one direction to support the spine. When expansion and contraction of the length of the rod is generated, it is possible to maintain the constant length by returning the spherical protrusion 15 to the basic position.

One end of the concave spherical receiving portion 16 having the engaging jaw 56 is formed to guide linear reciprocation of the spherical protrusion 16, while the spherical protrusion 16 is opened through an opening 60. While the spherical portion of the extruded blocking wall 66 which prevents the spherical protrusion 16 from being separated from the first body 201 by engaging the locking jaw 56 on the edge of the opening 60 while exposing Formed, the structure of the chamber 70 is shown.

Furthermore, even if the ball joint connection is bent by the bending of the vertebral joint, it is desirable to add a means for returning to the original straight state of the spinal support rod in the state where the external force forcing this bent state is removed.

To this end, each of the first main body 201 and the second main body 202 is provided with a support jaw 85 having a surface facing each other, the support jaw 85 and the second of the first body Between the opposing surfaces of the support jaw 85 of the main body, in order to recover the bent state as shown in FIG. 11, it is preferable that the refraction recovery elastic means 81 having elastic restoring force is interposed.

In the case of the third embodiment of the illustrated form, the support jaw 85 is naturally formed for the configuration of the chamber 70 or the like, but as in the fourth embodiment to be described later, the refractive recovery is performed to restore the bent state. It may be necessary to separately add the configuration of the support jaw 85 for interposing the elastic means 81 for the purpose.

A clear structure of each component constituting the above-described third embodiment is shown in FIG. 12, which is an exploded perspective view showing them in separate forms.

13 is a cross-sectional view showing a spinal support rod having a ball joint connection part according to a fourth embodiment of the present invention at the same time as in FIG. 11.

The spine support rod according to the fourth embodiment is different from the third embodiment in that the chamber 70 formed in the first body 201 for accommodating the spherical protrusion 16 is a spherical surface in the fourth embodiment. It is formed in the protrusion 16, and therefore, the rod portion of the first body 201 has been replaced to be movable in the chamber 70 of the spherical protrusion 16.

The advantage of such a structure is that the size can be made more compact than in the third embodiment in which the chamber 70 for accommodating the spherical protrusion 16 is provided.

On the other hand, unlike in the third embodiment, in the structure as in the fourth embodiment, in order to interpose the refraction recovery elastic means 81, the support jaw 85 is formed on the first body including the spherical protrusions 16. It is necessary to break the configuration separately.

On the other hand, in relation to the refraction recovery elastic means 81, a well-known elastic means such as an annular leaf spring, a coil spring as shown in Figures 11 to 12 can be applied as the resilient recovery means 81. However, in general, a spring made of a metal material has a disadvantage in that the strain is extremely limited due to the characteristics of the material itself, so that it is possible to provide high restoring force while maximizing the range of deformation caused by external force. As the elastic means 81, a high elastic polymer resin material processed with a foam can be considered.

That is, by molding a high-elastic polymer resin in the form of a cylinder having an annular cross section as shown in Fig. 14, it is easy as the elastic means 81 for refraction recovery in the structure shown in the third, fourth and the like of the present invention. Can be applied.

Moreover, when the elastic means for refraction recovery 81 according to the present invention is applied to a high elastic polymer resin material, it is possible to use polyurethane, foamed polyurethane foam, or the like, which is widely used as an elastic means as the actual high elasticity. desirable.

15 illustrates a spinal support rod according to a fifth embodiment of the present invention.

As shown, the spine support rod according to the fifth embodiment is similar to the structure according to the third embodiment shown in Figs. 10 to 12, the basic structure of the ball joint connection, etc., but accommodates the spherical protrusion 16 There is a difference in that a screw that can be fixed directly to the vertebral body 1 from the outer surface of the chamber 70 is formed.

Such a configuration is for a case where it is difficult to apply the rod of the structure shown in the foregoing embodiments and the like because the spacing between the vertebrae is narrow, and at least one end of the support rod is attached to the vertebral body 1 as in this embodiment. The case is made of a structure that can be directly fixed.

As described above, the present invention has been described with reference to the preferred embodiments and drawings, but the present invention is not limited to the configuration and operation of the illustrated and described embodiments. Rather, those skilled in the art will appreciate that many variations and modifications of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims

In order to grip the rod 200 fixedly installed on one vertebra using a screw 100 or other fixing means, the accommodation groove 15 in which the rod 200 can be accommodated and seated, and the accommodation groove 15 At least one support piece (11, 12) comprising a rod holding part having a fastening means for fixing the rod 200 when the rod 200 is seated in

Adjacent support pieces 11 and 12 held by rods 200 fixedly installed on adjacent vertebral bodies, respectively, form a connection part connecting the mutually abutting portions,

The connecting portion is in contact with each other from one of the adjacent support pieces 11 of the adjacent support pieces 11 in order to ensure a seam movement around the connecting portion in a state in which the adjacent support pieces 11 and 12 are interconnected. An artificial vertebral support, characterized in that the bulge accommodating portion has a structure formed in the other support piece (11) for receiving and receiving the plunges protruding in the direction.
The method of claim 1, wherein the fastening means is a fastening screw 25 capable of tightening and pressing the rod 200 with respect to the seated surface in the state in which the rod 200 is seated in the receiving groove (15). An artificial spinal support, characterized in that.
3. The connecting portion according to claim 1 or 2, wherein the protrusion is formed of a spherical protrusion 16 which protrudes in the direction of an adjacent support piece in a form having a spherical surface, and accommodates the protrusion. The prosthesis receiving part is a ball joint connection structure, which is composed of a concave spherical receiving part 17 of concave groove shape concave in spherical shape so as to conform with the spherical protruding part 16, artificial Spinal support.
The artificial spine according to claim 3, wherein the spherical protrusion 16 and the concave spherical receiving part 17 are provided together at symmetrical positions in one of the support pieces 11 and 12. Support.
The method according to claim 4, wherein in the connecting portion, in order to prevent the spherical protrusion 16, which is conformally accommodated in the concave spherical accommodating portion 17, from being detached from the concave spherical accommodating portion 17, A through hole 27 penetrating an inner surface and an adjacent surface of the concave spherical receiving portion 17 is formed, and a head having a larger area than the through hole 27 extends in a vertical direction from the center of the head surface. The artificial lumbar support, characterized in that the coupling shaft of the coupling tool having a shaft (30) is fixed to the spherical protrusion (16) via the through hole (27).
The support piece (11, 12) according to claim 5, wherein the spherical protrusion (16) protruding from the support pieces (11, 12) is reciprocated in the protruding direction from the support pieces (11, 12). It is made of a structure separated from, the lower end in the opposite direction, while setting the relative connection position with the support pieces (11, 12), while imparting an elastic force to restore to the original position when moved by an external force, An artificial spinal support, characterized in that the elastic means 40 is connected.
The artificial joint according to claim 1 or 2, characterized in that the connection part further comprises elastic means for imparting elastic restoring force with respect to the relative connection distances of the adjacent adjacent support pieces (11, 12). Spinal support.
In the spinal support rod used to support the vertebral structure by fixing both ends to two adjacent vertebrae in a surgical manner,

In the central portion of the longitudinal direction of the spinal column support rod, a portion where the portions are in contact with each other includes a spherical protrusion 16 formed of a spherical surface and a spherical inner surface having a curvature coinciding with the spherical surface of the spherical protrusion 16. The first main body 201, the concave spherical accommodating part, which is formed with a concave spherical accommodating part 17 having a ball joint connection part having a structure that can be bent in all directions, is formed on the side where the spherical protrusion 16 is formed. A spine support rod having a ball joint connection, characterized in that it is configured to be divided into a second body (202) which is a side on which (17) is formed.
9. The method according to claim 8, wherein in the ball joint connection part, the spherical protrusion 16, which is conformally accommodated in the concave spherical accommodating part 17, is prevented from being arbitrarily separated from the concave spherical accommodating part 17. To this end, a through hole 27 penetrating the inner surface and the adjacent surface of the concave spherical receiving portion 17 is formed, the head and the head surface consisting of an area of a diameter larger than the longest diameter of the through hole 27 The coupling shaft of the coupling sphere 30 having a coupling shaft extending in the vertical direction from the center portion is fixed to the spherical protrusion 16 via the through-hole 27, provided with a ball joint connecting portion One spine support rod.
The method according to claim 8, wherein the spherical protrusion 16 has a structure which does not arbitrarily separate from the concave spherical accommodating portion 17, which is conformally accommodated in form, and is basically separated from the first body 201. A spinal support rod having a ball joint connection, characterized in that the structure is connected to the first main body 201 to enable linear reciprocating movement in a direction parallel to the longitudinal direction of the rod.
The position of the first main body 201 and the spherical protrusions 16 connected to the first main body 201 so as to be linearly reciprocated relative to the first main body 201 are moved when the positions are moved from the basic position. Spinal support rod having a ball joint connection, characterized in that it further comprises an elastic means (71) for in-situ restoration to restore to.
The method of claim 10,

The spherical projection 16 is formed with a locking projection 56 protruding perpendicular to the moving direction on the opposite side surface of the spherical portion that is in contact with the concave spherical receiving portion 17,

The first main body 201 accommodates one end of the concave spherical accommodating portion 17 in which the locking jaw 56 is formed to guide linear reciprocation of the spherical protrusion 16, while opening 60 is provided. The spherical protrusion 16 is separated from the first body 201 by exposing the spherical portion 16 of the spherical protrusion 16 while the locking jaw 56 is caught by the edge of the opening 60. A spine support rod having a ball joint connection, characterized in that it comprises a chamber (70), on which a disengagement barrier wall (66) is formed.
The method of claim 12, wherein the chamber 70, the spherical protrusion 16 is further configured to include a resilient means for restoring the original position to restore to the default position when moved in a predetermined direction A spine support rod, comprising a ball joint connection.
The support main body 85 according to any one of claims 8 to 13, wherein the first main body 201 and the second main body 202 are each provided with support jaws 85 having surfaces facing each other. Between the support jaw 85 of the 201 and the opposing surface of the support jaw 85 of the second main body 202, the refractive recovery for restoring the state in which the ball joint connecting portion is bent in a straight form by an external force A spine support rod having a ball joint connection, characterized in that an elastic means (81) is interposed.
15. The spinal support rod according to claim 14, wherein said resilient recovery means (81) is made of a high elastic polymer resin material.
16. The spinal support rod according to claim 15, wherein said resilient resilient means (81) is in the form of a cylindrical cross section made of a polyurethane material.