KR20080001064U - Fixation device for lumber - Google Patents

Abstract

Spinal fixing device according to the present invention, both sides (100c) of the body is formed in a plane, the thickness (height) of the front end portion (100a) is made higher than the thickness (height) of the rear end (100b), The body is formed with a cutout portion 80 that is open in the tip direction and the vertical direction, and is inserted into the tip portion 100a side or the rear end side of the cutout portion 80 and is provided from the tip portion 100a to the rear end portion 100b. It is characterized in that it comprises an opening member 90 which is inserted into the opening member 90 or the rear end side is moved toward the front end portion (100b) toward the front end portion (100a).

Spinal fixation device according to the present invention is laid down between the vertebrae to insert and stand because it is not only easy and safe to insert between the vertebrae, but also open the body to the left and right by opening the opening member 90 after rotating 90 ° Because of the positioning, the spinal fixture may be prevented from protruding, deviating or pivoting between the bones constituting the vertebrae according to the impact or movement of the patient.

Spine, Spacing, Insertion, Fall Prevention, Lateral Opening, Gaping

Description

Spinal fixation device with fall prevention function {Fixation device for lumber}

1 is an explanatory diagram showing an application state of a general spinal column fixing device

2a and 2b is an explanatory diagram illustrating the insertion and procedure of the spinal fixation device

Figure 3 is an explanatory diagram illustrating the insertion, procedure of the spinal fixation device according to the prior art

Figure 4 is a perspective view showing a schematic appearance of the spinal column fixing device according to the present invention

Figure 5a is an external perspective view of the spine fixing device according to the present invention looked from the front end side

Figure 5b is a partial cutaway perspective view illustrating the coupling relationship between the opening and the body of the spinal fixing device according to the present invention

6 is an explanatory view illustrating a process in which the spinal column fixing apparatus according to the present invention is opened to the left and right by the opening member 90.

7a and 7b is a schematic outline perspective view showing another embodiment of the present invention

<Description of the symbols for the main parts of the drawings>

100: spinal fixing device 20: protrusion

70: through hole 80: incision

82: receiving portion 90: opening member

The present invention relates to a spinal fixation device inserted between the vertebrae forming the spine to maintain the spacing of the vertebrae.

In general, a patient with an injury to the spine narrows the interval between the bones constituting the spine so that each bone compresses nerves, so that the patient feels pain and cannot be able to behave freely. As a procedure for such a patient, a method of releasing nerves by inserting a spinal fixing device between the bones constituting the spine and maintaining the spacing between the bones has been performed.

This conventional spinal column fixing device is shown in FIG. Referring to the drawings, the conventional spinal column fixing device 1 is made of metal such as titanium, and is inserted between bones constituting the spine from the back (right side in FIG. 1) of the patient by a separate surgical instrument (not shown). To maintain the spacing between the bones. And the spinal fixing device (1) is formed in the upper and lower sides of the body so that the upper and lower sides, the left and right communication with each other, which is formed to fill the bone graft material to promote the body fusion, and also in the body It is prepared for mobile communication of nutrients.

By inserting the spinal fixing device having the above-described structure between the bones constituting the spine to maintain the spacing of the bones so that the bones do not compress the nerves.

Such spinal fixation device smoothes the spine only when the thickness (height) of the front end (left part in FIG. 1) is higher than the thickness (height) of the rear end (right part in FIG. 1) as shown in FIG. You can support it.

However, in order to insert the vertebral fixation device between the bones, a hole is inserted into the dorsal vertebrae as shown in FIGS. 2A and 2B. In order to insert the thick vertebral fixation device between the vertebrae of the patient, The procedure is difficult because there are many restrictions, such as the need to drill a larger hole between the spines, and the risk of causing interference with the nerve bundles that are connected along the vertebrae around the spine. have.

As a solution to this problem, there is disclosed a spinal fixation apparatus of a method of fixing up and down by using a device in a state inserted between the vertebrae, but the structure of the spinal fixation device is complicated, and the spine is formed It is difficult to confirm whether it has extended by the appropriate angle (alpha), and the practicality is very low.

In order to solve this problem, the applicant of the present invention devised a new type of spinal fixation device as of September 29, 2001 and was registered as Utility Model Registration No. 264055. The spinal fixation device according to the registration proposal is rounded at each corner and rounded, and has an inner space, the body 10 having a hollow cuboid shape, and protruding from the upper and lower surfaces of the body facing each other. With a pointed tip protrusion 20, as shown in Figure 3, the surface is not formed is inserted between each bone constituting the spine in the state facing the upper and lower surfaces of each bone constituting the spine The rotation of the body is characterized in that the front end protrusion is inserted into the upper and lower surfaces of the bones constituting the spine, respectively, to prevent the body from being separated from the bones constituting the vertebrae.

In other words, the spinal fixation device according to the registration proposal is a spinal fixation device that is inserted lying down when inserted between the vertebrae and turned up to 90 ° after insertion, and there is no difference in the thickness (height) of the leading end and the rear end in the lying state. In the standing state, the tip (thickness) is configured to be larger than the thickness of the rear end, so it is easy to insert without cutting the upper and lower vertebrae, but also by turning it 90 ° after insertion. It is designed to have an effective spinal fixation. Figure 3 shows the insertion rod 300 and the receptor 200 as a spinal fixing device insertion mechanism for inserting the spinal fixing device into the bone, the reference numeral 2 shows the vertebrae.

However, as a problem that the vertebral fixation device of the turning type disclosed in the Utility Model Registration No. 264055, immediately after the procedure or in a state where the vertebrae are not sufficiently fixed, the patient is subjected to violent movement or shock, It is true that there is a risk that the vertebral fixation device that has been erected will fall back to 90 ° and fall back. If the vertebral locking device is lying down, it may not be able to effectively support the upper and lower vertebrae, and may be separated from the bones forming the vertebrae.

The present invention was devised to solve the problems of Utility Model Registration No. 264055 registered and registered by the present inventors, so that even if the patient moves severely, the spinal fixation device does not move away from the bones constituting the spine or easily move in impact. For the purpose of

The present invention for achieving the above object, the body is rounded rounding (rounding), the inner space is provided is composed of a hollow body, the end is formed with a pointed protrusion 20 formed along the circumference of the body In the vertebral fixation device inserted between the vertebrae to maintain the spacing of each bone constituting the spine, the body is formed with an incision (80) opened toward the tip portion (100a), the tip portion 100a of the body The opening member 90 is inserted into the incision 80 to move the front end portion 100a from side to side as it moves from the front end portion 100a to the rear end portion 100b. It is done.

Both side surfaces (100c) of the body is formed in a plane, the thickness (height) of the front end portion (100a) is made higher than the thickness (height) of the rear end portion (100b).

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the spinal fixing device according to the present invention.

Figure 4 is a perspective view showing the appearance of the spinal fixation device according to the present invention, Figure 5a is a perspective view of the spinal fixation device looked at the front end side, Figure 5b is a combination of the opening member and the body of the spinal fixation device according to the present invention It is a partial cutaway perspective view explaining a relationship.

As shown in Figure 4, the body of the spinal column fixing device 100 according to the present invention is formed with an incision 80 is opened in the front end direction and the vertical direction, the rear end is configured to be integrally connected . And, the thickness (height) of the front end portion (100a) is made higher than the thickness (height) of the rear end portion (100b), while both sides (100c) of the body is formed in a plane.

The inside of the body is formed with an empty space, the outer surface of the body is rounded (rounding) is formed, the end is formed with a sharp protrusion 20 is inclined slightly toward the rear end toward the rear end.

And, the rear end side is formed with a fastening hole 41 and the coupling groove 40 which can be coupled and coupled to the spinal fixing device insertion mechanism (200,300), respectively.

Reference numeral 70 denotes a through hole penetrated to the left and right of the body so that both the inside and the outside of the spinal fixing device and the spinal locking device communicate with each other so that bone grafts that promote fusion between the vertebrae are naturally filled. In addition, to supply and communicate the nutrients, etc. in the new bond.

In addition, as shown in Figure 5a and Figure 5b, the spinal column fixing device according to the present invention is configured by the opening member 90 is inserted into the inner portion (inside) of the cutout portion 80 side of the tip portion (100a), In the drawing shown as an embodiment of the present invention, the screw 92 is formed on the outer circumferential surface of the opening member 90, and the screw corresponding to the screw 92 also inside the body in which the opening member 90 is accommodated. Is inserted and configured, and the receiving portion 82 in which the opening member 90 is accommodated is configured such that its diameter gradually decreases from the front end portion 100a toward the rear end portion 100b.

In addition, the center portion of the opening member 90 is formed by inserting the operating rod is formed into a square insertion hole 91 that can turn the opening member (90).

Briefly describing the use (action) process of the spinal fixation device according to the present invention configured as described above is as follows. Combination of the spinal fixation device into the spinal fixation device insertion device is inserted between the spine of the patient from the back of the patient, and the operation of setting up the spinal fixation device by turning the device to 90 ° after the insertion is registered and registered by the inventors of the present invention. Same as the contents disclosed in.

Insert the vertebral fixation device according to the present invention between the vertebrae and turn it by 90 °, and then insert the operating rod 350 into the hollow insertion rod 300 into the insertion hole 91 of the opening member 90. After inserting, when the operating rod 350 is slowly rotated, the opening member 90 having the screw 92 formed on the outer circumferential surface gradually moves toward the rear end while rotating in the receiving portion 82, and thus the body is incised. The left end is not separated from the left and right.

By this process, the spinal fixation device according to the present invention is to maintain a state in which the body is stably erected from left to right between the vertebrae.

7A and 7B illustrate another embodiment of the present invention (hereinafter referred to as a second embodiment), in which a body is rounded and rounded, and an inner space is provided to provide a hollow body and the body. In the spinal fixing device consisting of a sharp tip end formed along the circumference of,

Both sides of the body is formed in a plane, the thickness (height) of the front end is made higher than the thickness (height) of the rear end,

The body is formed with a cutout portion 80 that is open in the tip portion 100a direction and the vertical direction,

It is inserted and provided in a standing state on the front end portion (100a) side of the inside (inside) of the cutout portion 80, the corner is rounded, and comprises a rectangular opening member 90a having a height greater than the width It features.

The present invention according to the second embodiment configured as described above is inserted between the vertebrae according to the same method and procedure as in the first embodiment described above, turned up to 90 °, and then into the hollow insertion rod 300. Insert the operating rod 350 into the insertion hole 91 of the opening member 90a, and then rotate only the operating rod 350 by 90 ° while holding the insertion rod 300 so as not to rotate. When the rectangular opening member 90a is rotated sideways, the opening member 90a having a larger height than the width rotates in the receiving portion 82 to act to open the body side to side. .

In the second embodiment of the present invention, the opening member (90a) is more preferably configured by processing such that the corner is slightly rounded in order to facilitate rotation in the receiving portion (82).

The detailed description of the present invention is only to describe the preferred embodiment according to the accompanying drawings, the scope of the present invention is not limited to this and can be modified in various forms without departing from the spirit of the present invention, such Modifications are naturally included within the scope of the present invention.

For example, as a third embodiment of the present invention, without inserting a screw in the outer peripheral surface of the opening member 90 is inserted into the receiving portion 82 formed inside the body, toward the rear end (100b) toward the inside of the body Opening member which is formed on the tip end side by using a suitable mechanism (operation rod) so that the width of the formed receiving portion 82 (the width of the body, i.e., the gap between the inner surfaces of both bodies separated by the incision) is narrowed. When the 90) is pulled toward the rear end, the opening member is slid with respect to the inner surface of the receiving portion 82 inside the body, and as described above, the effect of opening the body to both sides can be obtained. Will be said to be substantially equivalent to the preferred embodiment of the present invention.

As a fourth modified embodiment of the present invention, the insertion portion (82) formed inside the body without forming a screw on the outer peripheral surface of the opening member 90, the width of the receiving portion 82 inside the body ( The horizontal width, i.e. the spacing between the inner surfaces of both bodies separated by the incisions) is kept constant, but constituted by inserting a gaping member having a diameter larger than the width of the receiving portion 82, and suitable aids. (Operating rod) by using the method to pull the opening member 90 toward the rear end (100b) by the way to obtain the purpose and working effect to achieve in the present invention, so this degree of deformation also of course the right of the present invention It belongs to the range.

In another modified fifth embodiment of the present invention, the body is rounded and rounded, the inner space is provided with a hollow body, and a spine consisting of a sharp tip end formed along the circumference of the body. In the fixing device, both sides of the body are formed in a plane, the thickness (height) of the front end is formed higher than the thickness (height) of the rear end, the body is incision open in the tip direction and the vertical direction An 80 is formed, and the opening member 90 is inserted into the rear end portion 100b of the inner side of the cutout 80 so as to achieve the object of the present invention. That is, when the opening member 90 inserted into the rear end portion 100b of the inside (inside) of the cutout portion 80 is pushed toward the front end portion 100a by using an appropriate auxiliary device (operation rod), the opening member 90 ) Is moved toward the end of the line to obtain the action effect to open the body to both sides.

As described above, according to the spinal fixation device according to the present invention, because the spinal fixation device according to the present invention is laid down and inserted between the vertebrae, the procedure of insertion between the vertebrae is not only easy, easy and safe, but also 90 Because the body is opened to the left and right by operating the opening member 90 after the rotation, the vertebral fixture is prevented from protruding, deviating or pivoting between the bones constituting the vertebrae due to the impact or movement of the patient. have.

Claims (5)

The body is rounded and rounded, and the inner space is composed of a hollow body and a sharp tip end formed along the circumference of the body, so as to maintain the spacing of each bone constituting the vertebrae. In the spinal fixation device inserted between the, Both sides of the body is formed in a plane, the thickness (height) of the front end is made higher than the thickness (height) of the rear end, The body is formed with a cutout portion 80 that is open in the tip portion 100a direction and the vertical direction, The spine having a fall prevention function, characterized in that it comprises an opening member 90 which is inserted into the distal end portion 100a inside the cutout portion 80 and moved from the distal end portion 100a to the rear end portion 100b. Fixture. The method of claim 1, An inner side of the cutout 80 is formed with a receiving portion 82 which gradually decreases in diameter from the front end portion 100a toward the rear end portion 100b. Spinal fixing device having a fall prevention function, characterized in that the opening member (90) is inserted into the receiving portion (82) of the body end side. The method of claim 2, The opening member 90 has a screw 92 is formed on the outer circumferential surface, the insertion hole 91 is formed in the center can be inserted into the operating rod, The accommodation unit 82 is a spinal fixing device having a fall prevention function, characterized in that a screw corresponding to the screw 92 of the opening member is formed. The body is rounded and rounded, and the inner space is composed of a hollow body and a sharp tip end formed along the circumference of the body, so as to maintain the spacing of each bone constituting the vertebrae. In the spinal fixation device inserted between the, Both sides of the body is formed in a plane, the thickness (height) of the front end is made higher than the thickness (height) of the rear end, The body is formed with a cutout portion 80 that is open in the tip direction and the vertical direction, Inside the cutout is formed an accommodating portion 82 which gradually decreases in diameter from the rear end portion 100b toward the front end portion 100a. Fall prevention function characterized in that it comprises an opening member 90 provided in the state inserted into the rear end portion (100b) side of the incision portion 80 is moved from the rear end portion (100b) toward the front end portion (100a) Spinal fixture having a. The body is rounded and rounded, and the inner space is composed of a hollow body and a sharp tip end formed along the circumference of the body, so as to maintain the spacing of each bone constituting the vertebrae. In the spinal fixation device inserted between the, Both sides of the body is formed in a plane, the thickness (height) of the front end is made higher than the thickness (height) of the rear end, The body is formed with a cutout portion 80 that is open in the tip portion 100a direction and the vertical direction, The opening member 90a, which is inserted into the receiving portion 82 in a state where it is erected on the distal end portion 100a inside the cutout portion 80, has a rectangular shape whose height is larger than its width, and has rounded corners 90a. Spinal fixing device having a fall prevention function, characterized in that comprising a.

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