KR101789769B1 - Expandable cage for surgical operation - Google Patents

Abstract

The present invention provides a cage comprising: a cage body inserted between a vertebra; An extension member foldably joined to both ends of the cage body and extending a face supporting the vertebral body; And a support member for supporting the gap between the extension members when the slide member is moved between the extension members in a state of being positioned on the cage body side.
According to the present invention, because of the compact structure due to the folding type, insertion is easy, and because of the expandable structure directly spreading in the outer diameter direction between the vertebrae, it can be operated conveniently at the time of surgery, And the height of the vertebrae in the longitudinal direction can be adjusted prior to insertion. Because of these points, it is possible to insert with only the primary incision to the spinal lesion, thereby minimizing the surgical incision site It can reduce nerve damage, and can improve the ease of surgery and success rate as a cage for spinal surgery.

Description

[0001] The present invention relates to an expandable cage for surgical operation,

The present invention relates to an expandable cage for surgical operation, and more particularly, to a cage which can be manufactured in a small size for use in spinal surgery and can be expanded directly between the vertebrae during surgery, The present invention relates to an expandable cage for surgical operation, in which not only a surgical incision site is small but also nerve damage is small, and damage to the lesion is minimized while maintaining a load suitable for supporting the vertebral body after charging.

In general, a human spine is made up of a plurality of vertebrae, and an intervertebral disk, called a disk, is placed between adjacent vertebrae to support the vertebrae flexibly while holding the vertebrae straight. The intervertebral disc is usually made of fibrous cartilage having a strong elasticity and expansibility, and has a different size and thickness depending on the region of the vertebrae.

If this intervertebral disc breaks down, it loses its lubrication between the adjacent vertebrae and presses the nerve to cause back pain. In the case of back pain caused by breakage of the disc, the patient may be treated with medication. However, when back pain is severe, spinal fusion is performed. Spinal fusion is performed by providing artificial frameworks such as rectangles and trapezoids. Cages are used for artificial frameworks. Instead of injured intervertebral discs, implantation is performed to maintain the intervertebral bodies in a normal state, do.

The conventional cage used for spinal surgery is to restore the vertebral body to a steady state by inserting an artificial bone or the like into the fusion cage between the vertebral bodies to stabilize the vertebrae and restore the defective vertebrae when the vertebral body is removed Korean Patent Laid-Open No. 10-2003-0063309 entitled " Fixed cage in bone-shaped vertebrae "and Korean Patent Laid-Open No. 10-2013-0082281 " Intervertebral Extension Cage " for extending the narrowed interval between vertebrae.

The conventional cage inserted between the vertebrae of the patients with spinal cord injury is cut in advance to fit the affected part of the spine and inserted into the affected part during surgery or expanded after insertion. However, if the expansion rate is small and used only for a small space such as a disk space, or if the expansion rate such as space insertion after the removal of the vertebra is high, the foot print is made large, And the enlargement of the affected part increases the risk of the surgery and the recovery period of the patient. In particular, in this case, the anterior approach may lead to the adherence or the deterioration of pulmonary function during surgery, and one or two neuromuscular sacrifices at the posterior approach surgery must be taken.

Due to these problems, the conventional cage can not sufficiently increase the outer diameter of the cage due to the restriction of the vertebrae insertion. Therefore, it is difficult to secure a cross-sectional area capable of properly supporting the damaged vertebra. To solve this problem, There was a difficulty in taking side effects.

In order to solve the problems of the prior art as described above, the present invention is advantageous in that it is easy to insert even by primary incision into the spinal part due to its small size, and is suitable for expansion and fixation in the radial direction of the cage after insertion, The purpose of this study was to improve the ease and success rate of spinal surgery. However, these problems are exemplary and do not limit the scope of the present invention.

According to an aspect of the present invention, there is provided an expandable cage for surgical operation comprising: a cage body inserted between the vertebrae; An extension member foldably joined to both ends of the cage body and extending a face supporting the vertebral body; And a support member for supporting the gap between the extension members when the slide member is moved between the extension members in a state of being located on the cage body side.

According to the present invention, each of the extension members can be hinged to both ends of the cage body.

According to the present invention, the cage body further comprises: a vertical panel; And an engaging portion formed at both ends of the vertical panel and extending in the same horizontal direction, wherein each of the extending members is hinged to each other.

Further, according to the present invention, the vertical panel may be formed on both sides of the interference avoiding groove for avoiding interference with the finger holding the holding member for pulling the supporting member.

Further, according to the present invention, the engaging portion and the extending member may be respectively formed with grooves for forming openings on the opposite sides.

Further, according to the present invention, both the engaging portion and the extending member can be hinged to each other with the opening interposed therebetween.

According to the present invention, the engaging portion and the extending member are respectively formed with projections arranged in the width direction, and the projections can be hinged to each other with the hinge pins.

Further, according to the present invention, the support member may be slidably engaged from the cage body to the end of the extension member.

According to the present invention, at least one guide protrusion is formed on each of the upper and lower ends of the support member, and the guide groove is formed so that the guide protrusion is engaged with the guide protrusion, The guide groove may be formed at an end of the extending member so that the guide protrusion stops at an end of the extending member.

Further, according to the present invention, when the folding member is folded from the cage body, the extension members can be folded so that their respective ends are arranged in line with each other.

According to the present invention, it is possible to prevent the support member from being returned to the cage body side, inserted between the support member and the cage body between the extension members, and to prevent the support member from returning to the cage body side, As shown in FIG.

According to some embodiments of the present invention as described above, since it is easy to insert due to the compact structure due to the folding type, and the expandable structure is directly extended in the outer diameter direction between the vertebrae, In this case, the height of the vertebrae can be adjusted before insertion, and the insertion can be made only by the primary incision to the spinal column due to these points. As a result, it is possible to minimize the surgical incision site, reduce nerve damage, and improve the ease and success rate of surgery as a cage for spinal surgery. Of course, the scope of the present invention is not limited by these effects.

1 is an exploded perspective view of an expandable cage for surgical operation according to an embodiment of the present invention;
FIG. 2 is a perspective view of an expandable cage for surgical operation according to an embodiment of the present invention; FIG.
3 is a side view illustrating a folded state of the expandable cage for surgical operation according to an embodiment of the present invention.
4 is a perspective view illustrating a use state of the expandable cage for surgical operation according to an embodiment of the present invention;
FIG. 5 is a side view showing the use state of the expandable cage for surgical operation according to an embodiment of the present invention; FIG.
6 is a side view showing a folded state of the expandable cage for surgical operation according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

FIG. 1 is an exploded perspective view illustrating an expandable cage for surgical operation according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating an expandable cage for surgical operation according to an embodiment of the present invention.

1 and 2, the surgical expandable cage 100 according to an embodiment of the present invention may include a cage body 110, an extension member 130, and a support member 140 And the vertebra 1 (see FIG. 5). However, it may be made of various materials including synthetic resin, ceramics, etc., which can maintain strength, but is not harmful to the human body Material can be selected. Also, the extended cage 100 for surgical operation according to an exemplary embodiment of the present invention may be manufactured to have a proper height and width corresponding to a vertebral body or a surgical purpose, or may be manufactured to have a certain standard have.

The cage body 110 is inserted between the vertebrae 1 (shown in Fig. 5). The cage body 110 may be hinged to both ends, e.g., the upper and lower ends, respectively, to be foldably joined to each other.

The cage body 110 includes a vertical panel 111 and a coupling part 112 extending in the same horizontal direction at both ends of the vertical panel 111 and hinged to the extension members 130, . The vertical panel 111 and the coupling part 112 may be integrally formed. The vertical panel 111 may be provided with an interference avoiding groove 113 on both sides for avoiding interference with the finger holding the supporting member 140 in order to pull the supporting member 140 disposed side by side with respect to the extending member 130 have. Thus facilitating the movement of the support member 140 during the surgical procedure.

The expansion members 130 are made of a pair and can have, for example, a plate-like structure, and are foldably joined at both ends of the cage body 110, and extend the face supporting the vertebral body 1 (shown in Fig. 5). The expansion member 130 is coupled to the upper and lower ends of the cage body 110 so as to be foldable as shown in FIG. 3, and is extended horizontally by the support member 140 as shown in FIG. 4, Quot; C " with < / RTI > The upper surface of the extension member 130 coupled to the upper end of the cage body 110 and the lower surface of the extension member 130 coupled to the lower end of the cage body 110 may have a concave- May be formed.

The engaging portion 112 and the extending member 130 may be formed with grooves 115 and 132 for forming an opening on the side opposite to each other. An opening may be formed so as to be opened up and down by the groove 115 of the engaging portion 112 and the groove 132 of the extending member 130. [ This opening formation, together with the overall weight reduction of the surgical expandable cage 100, can provide the space required for surgery.

When the openings are formed, the engaging portion 112 and the extending member 130 can be hinged to each other with the openings in between. The engaging portion 112 and the extending member 130 may be formed in the width direction so as to be hinged by the hinge engaging portion 120. The projecting portions 114 and 131 may be formed in the width direction of the hinge pin 120, (123). For example, the hinge coupling part 120 includes the hinge pin 123 and the pin coupling holes 121 and 122 for coupling the hinge pin 123. The pin coupling holes 121 and 122 are formed in the coupling part 112 and the protruding portion 131 of the extending member 130, respectively.

The support member 140 supports the extension member 130 to maintain a distance between the extension members 130 when the support member 140 is moved between the extension members 130 while being positioned on the cage body 110 side, And is arranged so as to be in parallel with the plate-like structure.

The support member 140 may be slidable from the cage body 110 to the end of the extension member 130 in order to reliably move the extension member 130 with respect to the support member 130 and the extension member 130. [ For example, at least one guide protrusion 141, for example, two guide protrusions 141 may be formed at each of the upper and lower ends. The cage body 110 and the extension member 130 are formed with guide grooves 116 and 133 for sliding the guide protrusions 141 so that the guide protrusions 141 stop at the ends of the extension members 130 The guide groove 133 may be formed so as to be blocked at the end of the extending member 130. That is, the end of the guide groove 133 on the side of the extension member 130 is blocked so as not to open outward, so that the support member 140 can be moved within a predetermined range and then stopped.

The guide grooves 116 and 133 include first guide grooves 116 formed on the surfaces of the pair of engaging portions 112 facing each other so as to correspond to the guide protrusions 141 of the support member 140, And second guide grooves 133 formed on the surfaces of the pair of extension members 130 facing each other. The first guide groove 116 and the second guide groove 133 are formed to be connected to each other so that the guide protrusion 141 of the support member 140 is guided to slide from the engaging portion 112 toward the extension member 130 .

4 and 5, a wedge member 150 may be additionally provided between the extension members 130 so that the support member 140 exerts a stable supporting force.

The wedge member 150 is inserted between the support member 140 and the cage body 110 between the extension members 130 and prevents the support member 140 from returning to the cage body 110 side, And may be a plate-shaped member that is installed diagonally between the support member 140 and the cage body 110, as in the present embodiment. The wedge member 150 may have various cross-sectional shapes or structures, such as a " "shape, an " X" shape, a circular shape, or a polygonal shape or the like, unlike the plate member of the present embodiment. In addition, any one or both of the cage body 110 and the extension member 130 may be provided with a structure serving as a stopper such as a groove or a projection to restrict the detachment of the wedge member 150.

6 is a side view illustrating a folded state of the expandable cage for surgical operation according to another embodiment of the present invention.

6, the scalable cage 200 for surgical operation according to another embodiment of the present invention includes a cage body 210, an extension member 230, and a support member 240 . In this embodiment, the extension member 230 is hinged to the cage body 210 by the hinge coupling part 220. However, unlike the previous embodiment, when the cage body 210 is folded from the cage body 210, They can be vertically folded so as to be aligned with each other, and have a length to allow such vertical folding. That is, each of the extending members 230 may be arranged in a line with each other and folded to a vertical posture so as to be parallel to the supporting member 240. Therefore, the angles of extension of the extension members 130 and 230 according to all the embodiments of the present invention can be determined according to their lengths, and folding can be allowed in various angular ranges according to the standard, structure, and the like.

The operation of the expandable cage for surgical operation according to the present invention will now be described with reference to an expanded cage 100 for surgical operation according to an embodiment of the present invention.

In the spinal surgery operation, as shown in FIG. 2, the support member 140 is brought into contact with or in contact with the cage body 110 side so that the extension member 130 is folded , The surgical extension cage 100 is inserted between the vertebral bodies 1 (shown in Fig. 5).

4 and 5, the support member 140 is positioned between the extension members 130 in a state in which the extension member 130 is horizontally unfolded, So that the support surface of the substrate 1 is expanded.

The support member 140 may be positioned between the extension members 130 after the extension member 130 is first unfolded for expansion of the support surface relative to the vertebral body 1, For example, by moving the support member 140 from the cage body 110 to the extension member 130 side, the extension member 130 can be naturally spread by the support member 140.

When the support member 140 moves to the end of the extension member 130 to maintain the gap between the extension members 130, the wedge member 150 is additionally provided between the support member 140 and the vertical panel 111 The wedge member 150 can stably maintain the distance between the extending members 130 together with the supporting member 140 by preventing the supporting member 140 from being moved to the cage body 110 side unintentionally.

Meanwhile, the interval or height between the extension members 130 can be adjusted before the spinal surgery, and the cage body 110, the extension member 130 and the like having a suitable size can be used according to the operation site.

According to the present invention, since it is easy to insert due to the compact structure due to the folding type and the expandable structure which is directly extended in the outer diameter direction between the vertebrae, it can be operated conveniently during surgery, And the height in the longitudinal direction of the vertebrae can be adjusted before insertion.

In addition, according to the present invention, it is possible to insert the spinal canal by only a primary incision, thereby minimizing a surgical incision site and reducing nerve damage, and is a cage for spinal surgery. .

Although the present invention has been described with reference to the accompanying drawings, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

1: vertebral body 110, 210: cage body
111: vertical panel 112:
113: interference avoiding groove 114:
115: groove 116: guide groove
120, 220: hinge coupling parts 121, 122: pin coupling hole
123: hinge pin 130, 230:
131: protrusion 132: groove
133: Guide groove 140, 240: Support member
141: Guide protrusion 150: Wedge member

Claims (11)

A cage body inserted between the vertebrae;
An extension member foldably joined to both ends of the cage body and extending a face supporting the vertebral body; And
A support member for supporting the gap between the extension members when the slide member is moved between the extension members in a state of being located on the cage body side;
Lt; / RTI >
Wherein the support member comprises:
A sliding member coupled to the cage body so as to be slidable from the cage body to an end of the extending member,
At least one guide protrusion is formed at each of the upper and lower ends,
Wherein the cage body and the extension member
Wherein the guide groove is formed at a distal end of the extension member so that the guide protrusion is stopped at an end of the extension member. The method according to claim 1,
The cage body includes:
Wherein each of the extension members is hingedly coupled at both ends thereof. The method according to claim 1 or 2,
The cage body includes:
Vertical panel; And
A plurality of extension members each extending in the same horizontal direction at both ends of the vertical panel, the extension members being hinged to each other;
And an expandable cage for surgical operation. The method of claim 3,
Wherein the vertical panel comprises:
Wherein an interference avoiding groove is formed on both sides for avoiding interference with a finger gripping the support member for pulling the support member. The method of claim 3,
Wherein the engaging portion and the expanding member
And a groove for forming an opening is formed on the side facing each other. The method of claim 5,
Wherein the engaging portion and the expanding member
Wherein both sides are hinged to each other with the opening therebetween. The method of claim 6,
Wherein the engaging portion and the expanding member
And each of the protrusions is hinged to each other with a hinge pin. delete delete The method according to claim 1 or 2,
The extension member
And folded so that the respective ends of the cage body are arranged to be opposed to each other in a line when folded from the cage body. The method according to claim 1 or 2,
Further comprising a wedge member inserted between the support member and the cage body between the extension members and restraining the support member from returning to the cage body side and maintaining a gap between the extension members, Expandable cage for surgery.

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