KR20210012912A - Spacer for laminoplasty - Google Patents

Abstract

Disclosed is a spacer for laminoplasty. The spacer for laminoplasty according to embodiments of the present invention, as a spacer for laminoplasty for fixing a first cut part and a second cut part of the resected vertebrae in a spaced state, comprises: a body part extending along the longitudinal direction; a first fixing part connected to one side in the longitudinal direction of the body part to be fixed to the first cut part; and a second fixing part connected to the other side in the longitudinal direction of the body part to be fixed to the second cut part. The body part comprises: a spacer part disposed between the first cut part and the second cut part and formed to a predetermined length to space the first cut part and the second cut part apart; and a first support part formed by bending between the spacer part and the first fixing part to support the cut surface of the first cut part.

Description

Spacer for laryngoplasty {SPACER FOR LAMINOPLASTY}

The present invention relates to a spacer for laryngeal angioplasty, and more particularly, to form a wider space in the vertebral canal, and to replace one or more of the bony vertebral structures of the vertebrae defining the boundary. It relates to a dragon spacer.

The spine refers to the bones that maintain the main skeleton from the neck to the back, waist and hips. The spine consists of 7 cervical vertebra (cervical vertebra), 12 pectoral bones (thoracic vertebra), 5 lumbar vertebra (lumbar vertebra), 5 sacrum (sacrum), 4 tailbones (michu, coccyx).

The spinal cord, a nerve bundle from the brain, is placed in the spine. The spinal cord connects the brain, the central nervous system, and the peripheral organs, the peripheral nervous system. The spinal cord is placed in the spinal canal of the spine. When the spinal cord is damaged or twisted by various external factors, spinal diseases are caused by compressing the nerves passing through the spinal canal. Examples of such spinal diseases include ossification of posterior longitudinal ligament, spinal stenosis, and the like.

Posterior sedimentary ligament ossification is a neurological disorder that occurs when the posterior sedimentary ligament supported by the back of the vertebral body and the front of the vertebral canal is hardened like a bone due to various causes and compresses the nerves passing through the spinal canal. Spinal canal stenosis refers to a disease that causes pain in the lower back due to the narrowing of the spinal canal in the center of the spine, or multiple neurological symptoms in the legs. Specifically, when the spinal canal of the neck is narrowed, it is called cervical spinal canal stenosis, and when the spinal canal of the lower back is narrowed, it is called lumbar spinal canal stenosis.

For the treatment of such diseases, laminoplasty has been performed in which one or more of the vertebral structures of the vertebrae surrounding the spinal canal and defining the boundary are exchanged to form a wider space in the spinal canal. In more detail, in lamineplasty, the lamina is excised and separated, and a spacer is placed between the anterior and posterior parts of the separated posterior arch, for example, between the posterior arch and the lateral mass. It is a surgical method to keep the and posterior part firmly and expand the space of the spinal canal through this.

Conventional spacers used in lamineplasty do not include a structure that supports the load of the resected lumbago. Therefore, it is difficult to lift the posterior arch without a screw during surgery. In other words, the conventional spacer for laryngeal angioplasty has a problem that it is difficult to fix in the surgical process, and the stability is poor in terms of load support of the concubine even after fixation.

Korean Patent Application Publication No. 10-2003-0068128

The present invention is to solve the above-described problems of the prior art, and an object of the present invention is to facilitate surgery by stably supporting the resected vertebrae when performing laminectomy, and to improve stability after surgery. It is to provide a spacer.

In addition, another object of the present invention is to provide a spacer for laminectomy in which the fastening force is efficiently distributed when fixed to the vertebral bone through a fastening member.

In addition, another object of the present invention is to provide a spacer for laminectomy having excellent fixing power of a contact surface of a fixing part in contact with a vertebral bone.

In addition, another object of the present invention is to provide a spacer for laminectomy with excellent manufacturing efficiency and economy.

According to an aspect of the present invention, there is provided a spacer for laminectomy for fixing a first cut part and a second cut part of the excised vertebra bone in a spaced state, comprising: a body part extending along a length direction; A first fixing part connected to one side of the body part in the length direction so as to be fixed to the first cutting part; And a second fixing part connected to the other side of the body part in the length direction so as to be fixed to the second cut part, wherein the body part is disposed between the first cut part and the second cut part to be fixed to the first cut part and the second cut part. 2 A spacer for laminectomy comprising a spacer formed of a predetermined length to separate the cut part, and a first support part formed by bending between the spacer and the first fixing part to support the cut surface of the first cut part Is provided.

In this case, the first support part may form an angle of 70 degrees or more and 110 degrees or less with the first fixing part.

In addition, the first fixing portion includes two or more first fastening member insertion holes, and at least one of the two or more first fastening member insertion holes has a center formed on one side with respect to a central axis in the longitudinal direction, at least In the other, the center may be formed on the other side based on the central axis in the longitudinal direction.

In addition, the first fixing portion may include three first fastening member insertion holes, and a triangle may be formed when the centers of each of the first fastening member insertion holes are connected.

In addition, the body portion may further include a second support portion formed by bending between the spaced portion and the second fixing portion to support the cut surface of the second cutting portion.

In addition, the second support part may form an angle of 70 degrees or more and 110 degrees or less with the second fixing part.

In addition, the second fixing part may include a pair of second fastening member insertion holes formed symmetrically with respect to the central axis in the longitudinal direction.

In addition, an uneven portion may be formed on at least a portion of at least one of a lower surface of the first fixing portion, a lower surface of the second fixing portion, and a support surface of the first support portion.

In addition, an uneven portion may be formed on at least a portion of the support surface of the second support portion.

In addition, the spacing portion may be formed to have a length of 4 ~ 18mm.

In addition, the body part, the first fixing part and the second fixing part may be integrally formed.

In addition, the body portion, the first fixing portion and the second fixing portion may be formed of a single plate member.

According to embodiments of the present invention, since the support portion bent in the body portion stably supports the excised vertebral bone, lifting and support of the excised vertebral bone can be effectively performed when performing laminectomy.

In addition, according to the embodiments of the present invention, since the fastening member insertion holes are formed on one side and the other side with respect to the longitudinal central axis of the spacer for laminectomy, the fastening force when the spacer for laminectomy is fixed to the spine Dispersion can be made efficiently.

In addition, according to embodiments of the present invention, it is possible to stably secure the fixing force of the spacer for laminectomy through the uneven portion formed on the contact surface of the fixing portion in contact with the vertebral bone.

In addition, according to the embodiments of the present invention, a spacer for laminectomy can be manufactured by bending a single member, so that manufacturing efficiency and economy can be obtained.

1 is a front perspective view of a spacer for laminectomy according to a first embodiment of the present invention.
2 is a rear perspective view of a spacer for laminectomy according to a first embodiment of the present invention.
3 is a view showing an example in which the spacer for laminectomy according to the first embodiment of the present invention is used in laminectomy.
4 is a side view of a spacer for laminectomy according to a first embodiment of the present invention.
5 is a plan view of a spacer for laminectomy according to a first embodiment of the present invention.
6 is a front perspective view of a spacer for laminectomy according to a second embodiment of the present invention.
7 is a rear perspective view of a spacer for laminectomy according to a second embodiment of the present invention.
8 is a front perspective view of a spacer for laminectomy according to a third embodiment of the present invention.
9 is a rear perspective view of a spacer for laminectomy according to a third embodiment of the present invention.
10 is a plan view of a spacer for laminectomy according to a third embodiment of the present invention.
11 is a side view of a spacer for laminectomy according to a third embodiment of the present invention.
12 is a front perspective view of a spacer for laminectomy according to a fourth embodiment of the present invention.
13 is a rear perspective view of a spacer for laminectomy according to a fourth embodiment of the present invention.
14 is a plan view of a spacer for laminectomy according to a fourth embodiment of the present invention.
15 is a rear perspective view of a spacer for laminectomy according to a fifth embodiment of the present invention.
16 is a rear perspective view of a spacer for laminectomy according to a sixth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. In order to clearly describe the present invention, parts not related to the description in the drawings are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility.

1 and 2 are a front perspective view and a rear perspective view of a spacer for laminectomy according to a first embodiment of the present invention, respectively. 3 is a view showing an example in which the spacer for laminectomy according to the first embodiment of the present invention is used in laminectomy. The spine shown in Figure 3 may be a cervical spine or thoracic spine.

The spacer for laminoplasty according to the first embodiment of the present invention is used for laminoplasty. The spacer for laminectomy according to the first embodiment of the present invention is fixed between the anterior and posterior parts of the resected vertebral bone to firmly maintain the separated vertebral bone in a spaced state.

In more detail, the spacer for lamineplasty according to the first embodiment of the present invention may be used for'hemilateral door laminoplasty'. In addition, the spacer for laminectomy according to the first embodiment of the present invention may be implanted in the cervical and thoracic vertebrae. In this case, the spacer for laminectomy according to the first embodiment of the present invention may be combined while spaced apart from the incision formed between the lamina and the lateral mass.

1 and 2, the spacer for laminectomy according to the first embodiment of the present invention is for fixing the first cut part and the second cut part of the excised vertebral bone in a spaced state, and the body part 10, It includes one fixing part 20 and a second fixing part 30. The body portion 10 extends along the longitudinal direction. In addition, the first fixing portion 20 is connected to one side of the body portion 10 in the longitudinal direction. The second fixing part 30 is connected to the other side of the body part 10 in the longitudinal direction.

Referring to FIG. 3, at the rear of the vertebral body 101, a right concubine 102 and a left concubine 103 form a spinal canal. The spinal cord is placed in the spinal canal. In addition, a right lateral mass 104 and a left lateral mass 105 are connected to the anterior of the right posterior arch 102 and the left posterior arch 103, respectively, and the right posterior arch 102 and the left posterior arch ( The posterior of 103) merges into one and is connected with the spinous process 106.

In Figure 3, the spacer for laminectomy according to the first embodiment of the present invention is between the right posterior arch 102 and the right lateral mass 104 to fix the right posterior arch 102 and the right lateral mass 104 in a spaced state. Implanted in the resection formed in That is, in the first embodiment of the present invention, the first cut portion to which the first fixing part 20 is fixed becomes the right concubine 102, and the second cut part to which the second fixing part 30 is fixed is the right lateral mass. (104) can be.

On the other hand, between the left posterior arch 103 and the left outer mass 105, a partial incision 107 is formed at a predetermined depth. The partial resection 107 allows the opening of the hinge to rotate the right posterior arch 102, which is the first cut, in order to expand the spinal canal during the implantation of the spacer for laminectomy according to the first embodiment of the present invention. .

Unlike that shown in FIG. 3, it is possible to form an incision between the left posterior arch 103 and the left lateral mass 105, and insert the spacer for laminectomy according to the first embodiment of the present invention. In other words, the first fixing part 20 may be fixed to the first cutting part formed in the left concubine 103, and the second fixing part 30 may be fixed to the second cutting part formed in the left outer mass 105. have.

In addition, the resection on the vertebral bone can be changed according to the patient's condition and the surgical site. For example, it may also be considered that the ablation portion is formed at the middle of the right concubine 102 or the left concubine 103.

Hereinafter, the body portion 10, the first fixing portion 20, and the second fixing portion 30 of the spacer for laminectomy according to the first embodiment of the present invention will be described in detail.

The body portion 10 extends along the longitudinal direction. The body portion 10 is disposed between the first cut portion and the second cut portion of the excised vertebral bone to separate the first cut portion and the second cut portion. The body portion 10 may be formed of a plate having a predetermined width and extending to a predetermined length. In the first embodiment of the present invention, the body portion 10 includes a spacer portion 11, a first support portion 12 and a second support portion 13.

The spacer 11 is disposed between the first and second cuts and has a predetermined length to space the first and second cuts apart. Referring to FIG. 4, the length L of the spacer 11 may vary depending on the anatomical characteristics of the patient and the implantation site of the spacer for laminectomy. For example, the spacer 11 may be formed to have a length of 2 to 18 mm.

The first support portion 12 is formed by bending between the spaced portion 11 and the first fixing portion 20 to support the cut surface of the first cut portion. The first support 12 lifts the ablated first cut. In addition, the first support part 12 makes the operation easier by supporting the load of the first cutting part, and allows the spacer for laminectomy to be stably fixed.

Referring to FIG. 3, when the spacer for laminectomy according to the first embodiment of the present invention is implanted in the resection portion formed between the right posterior arch 102 and the right lateral mass 104, the first support part 12 is It can be seen that it supports the cut surface 1021 of the right posterior arch 102 that becomes the cut part. As such, in the first embodiment of the present invention, the first support portion 12 may lift the right concentric arch 102, which becomes the first cutting portion, and support the load.

The first support part 12 may be formed to be bent at a predetermined angle with the first fixing part 20. Referring to FIG. 4, in the first embodiment of the present invention, the first support part 12 may be formed to be bent perpendicular to the first fixing part 20 to stably support the cut surface of the first cut part. That is, the angle α formed between the first support 12 and the first fixing unit 20 may be 90 degrees. Meanwhile, the angle α formed by the first support part 12 and the first fixing part 20 may be changed as necessary. Specifically, the angle α formed by the first support part 12 and the first fixing part 20 may be selected in a range of 70 degrees or more and 110 degrees or less.

The second support part 13 is bent to support the second cut part. The second support part 13 may serve to guide the coupling position of the second fixing part 30 in the process of implanting the spacer for laminectomy according to the first embodiment of the present invention. In addition, the second support part 13 may also play a role of supporting the load of the second cutting part, like the first support part 12.

Referring to Figure 3, when the spacer for laminectomy according to the first embodiment of the present invention is implanted in the resection portion formed between the right posterior arch 102 and the right lateral mass 104, the second support portion 13 is It is shown that it is arranged while supporting the right outer mass 104 which becomes the cut part. As such, the second support part 13 may be arranged in a form that supports the cut surface 1041 of the right outer mass 104.

The second support part 13 may be bent to form a predetermined angle with the second fixing part 30. 4, in the first embodiment of the present invention, the second support part 13 is bent so as to form an angle of 90 degrees or more and 180 degrees or less with the second fixing part 30 to stably support the second cutting part. Can be formed. That is, the angle β formed by the second support part 13 and the second fixing part 30 may be selected from 90 degrees or more and 180 degrees or less.

The angle β formed by the second support part 13 and the second fixing part 30 may be determined in consideration of an anatomical feature of the second cutting part. For example, the angle β formed by the second support part 13 and the second fixing part 30 may be 85 degrees. In addition, the angle β formed by the second support part 13 and the second fixing part 30 may be adjusted within a certain range by an external force as needed during surgery.

The first fixing part 20 is connected to one side of the body part 10 in the longitudinal direction so as to be fixed to the first cut part of the cut vertebral bone. The first fixing part 20 may be formed of a plate connected to the first support part 12 of the body part 10.

The first fixing part 20 may be fixed to the first cutting part through the fastening member S. To this end, the first fixing part 20 includes a first fastening member insertion hole 21 for inserting the fastening member S. For example, the fastening member S may be made of a screw.

The first fastening member insertion hole 21 is formed while penetrating the first fixing part 20 vertically. In the first embodiment of the present invention, the first fastening member insertion hole 21 includes a 1-1 fastening member insertion hole 21a and a 1-2 fastening member insertion hole 21b.

In the first embodiment of the present invention, the 1-1 fastening member insertion hole 21a and the 1-2 fastening member insertion hole 21b have their centers formed opposite to each other along a longitudinal central axis A. . Referring to Figure 5, the center (C1) of the 1-1 fastening member insertion hole (21a) and the center (C2) of the 1-2 fastening member insertion hole (21b) is a concubine according to the first embodiment of the present invention. They are located on one side and the other side, respectively, based on the longitudinal central axis (A) of the plastic surgery spacer.

The second fixing part 30 is connected to the other side in the longitudinal direction of the body part 10 so as to be fixed to the second cutting part. The second fixing part 30 may be formed of a plate connected to the second support part 13 of the body part 10.

In addition, the second fixing part 30 may also be fixed to the second cutting part through the fastening member S, like the first fixing part 20. The second fixing part 30 includes a second fastening member insertion hole 31 for inserting the fastening member S. As described above, the fastening member S may be a screw.

The second fastening member insertion hole 31 is formed while penetrating the second fixing part 30 vertically. In the first embodiment of the present invention, the second fastening member insertion hole 31 includes a 2-1 fastening member insertion hole 31a and a 2-2 fastening member insertion hole 31b.

Referring to FIG. 5, the center (C3) of the 2-1 fastening member insertion hole (31a) and the center (C4) of the 2-2 fastening member insertion hole (31b) are based on the longitudinal central axis (A). They are located opposite each other. More specifically, the center (C3) of the 2-1 fastening member insertion hole (31a) and the center (C4) of the 2-2 fastening member insertion hole (31b) are symmetrical with respect to the longitudinal central axis (A). It is formed and arranged.

As described above, in the spacer for laminectomy according to the first embodiment of the present invention, at least one of the first fixing part 20 and the second fixing part 30 is shifted from the center along the longitudinal central axis (A). It may include two or more fastening member insertion holes formed. When any one or more of the first fixing part 20 and the second fixing part 30 includes two or more fastening member insertion holes formed with the center shifted along the longitudinal central axis A, the fastening member S The fastening force may be distributed and formed on one side and the other side based on the longitudinal central axis (A). Through this, the spacer for laminectomy according to the first embodiment of the present invention secures a contact surface as wide as possible to the vertebral bone and can be stably coupled.

6 is a front perspective view of a spacer for laminectomy according to a second embodiment of the present invention, and FIG. 7 is a rear perspective view of a spacer for laminectomy according to a second embodiment of the present invention.

6 and 7, the spacer for laminectomy according to the second embodiment of the present invention has three first fastening member insertion holes 21 of the first fixing part 20 formed therein. That is, in the second embodiment of the present invention, the first fixing part 20 includes a 1-1 fastening member insertion hole 21a, a 1-2 fastening member insertion hole 21b, and a 1-3 fastening member insertion hole. It differs from the first embodiment of the present invention in that (21c) is included. The remaining configurations of the other embodiments of the present invention are all the same as those of the first embodiment of the present invention.

In the second embodiment of the present invention, the center of the 1-1 fastening member insertion hole 21a is located on one side with respect to the longitudinal central axis, and the center of the 1-2 fastening member insertion hole 21b is the center of the longitudinal direction. It is located on the other side of the axis. Meanwhile, the center of the 1-3th fastening member insertion hole 21c may be located on a central axis in the longitudinal direction.

In addition, the 1-1 fastening member insertion hole (21a), the 1-2 fastening member insertion hole (21b), and the 1-3 fastening member insertion hole (21c) are arranged to form a triangle when each center is connected. have. When the 1-1 fastening member insertion hole 21a, the 1-2 fastening member insertion hole 21b, and the 1-3 fastening member insertion hole 21c are formed, the fixing force through the fastening member S is It is more evenly dispersed in the first fixing portion 20, the stability of the fixing can be further improved.

As seen through the first and second embodiments of the present invention, the first fixing part 20 includes two or more first fastening member insertion holes 21, but inserting two or more first fastening members It is preferable that at least one of the holes 21 has a center formed on one side with respect to the central axis in the longitudinal direction, and at least one other center is formed on the other side with respect to the central axis in the longitudinal direction.

Meanwhile, the number of fastening member insertion holes is not limited by the above embodiments. In other words, the number of fastening member insertion holes may be increased or decreased in consideration of the patient's anatomical characteristics and implantation sites.

8 is a front perspective view of a spacer for laminectomy according to a third embodiment of the present invention. 9 is a rear perspective view of a spacer for laminectomy according to a third embodiment of the present invention. Further, FIG. 10 is a plan view of a spacer for laminectomy according to a third embodiment of the present invention, and FIG. 11 is a side view of a spacer for laminectomy according to a third embodiment of the present invention.

The spacer for laminectomy according to the third embodiment of the present invention is compared with the first embodiment of the present invention described above, the angle formed by the second support part 13 and the second fixing part 30 of the body part 10 V is different, and there is a difference in that the uneven portions 22 and 32 are formed on the lower surfaces of the first fixing portion 20 and the second fixing portion 30.

In the third embodiment of the present invention, the angle made by the second support portion 13 with the second fixing portion 30 is somewhat smaller than that of the first embodiment of the present invention. By relatively reducing the angle between the second support part 13 and the second fixing part 30, it is possible to improve the support force for the cut surface of the second cut part.

In more detail, the second support part 13 may be bent to form an angle of 70 degrees or more and 110 degrees or less with the second fixing part 30 to more stably support the second cutting part. That is, in the third embodiment of the present invention, the angle β formed by the second support part 13 and the second fixing part 30 may be selected from 70 degrees to 110 degrees. For example, an angle between the second support part 13 and the second fixing part 30 may be 85 degrees.

In addition, in the third embodiment of the present invention, both the angle formed by the spacer 11 and the first support 12 and the angle formed by the spacer 11 and the second support 13 may be 85 degrees, An angle formed by the first support part 12 and the first fixing part 20 may be 90 degrees.

Meanwhile, the vertical distance D1 between the first fixing part 20 and the spaced part 11 may be 4.9 to 5.3 mm. In addition, the vertical distance D2 between the second fixing portion 30 and the spaced portion 11 may be 2.0 to 2.5 mm. When considering the stable support by the first support 12 and the second support 13 and prevention of contact between the spinal cord in the spinal canal and the spacer 11 at the same time, the first fixing part 20 and the spacer ( The vertical distance D1 between 11) may be set to 5.1 mm, and the vertical distance D2 between the second fixing portion 30 and the spaced portion 11 may be set to 2.4 mm.

In the third embodiment of the present invention, the length L2 of the spacer 11 may be formed to be 2 to 18 mm as in the first embodiment. Furthermore, the length L1 of the first fixing part 20 is 8 to 14 mm (for example, 11 mm), and the length L3 of the second fixing part 30 is 4 to 8 mm (for example, 6 mm). Can be formed as

Referring to FIG. 9, in the third embodiment of the present invention, the first fixing part 20 and the second fixing part 30 include uneven parts 22 and 32. In more detail, the first uneven portion 22 is formed on the lower surface of the first fixing portion 20, and the second uneven portion 32 is formed on the lower surface of the second fixing portion 30.

The lower surface of the first fixing part 20 and the lower surface of the second fixing part 30 become contact surfaces that come into contact with the vertebral bone when the spacer for laminectomy is implanted. The first uneven portion 22 and the second uneven portion 32 increase the roughness (roughness) of the contact surface, thereby increasing the frictional force between the vertebral bone and the fixing portions 20 and 30 to provide stability during fixation.

The first uneven portion 22 and the second uneven portion 32 may be formed in various ways. For example, the first uneven portion 22 and the second uneven portion 32 are etched after performing a mesh masking treatment on the lower surface of the first fixing portion 20 and the lower surface of the second fixing portion 30. It can be formed by immersing in a solution and acid treatment.

In addition to the configurations described above in connection with the third embodiment of the present invention, the remaining configurations are as described above with respect to the first embodiment of the present invention.

12 is a front perspective view of a spacer for laminectomy according to a fourth embodiment of the present invention. 13 is a rear perspective view of a spacer for laminectomy according to a fourth embodiment of the present invention. 14 is a plan view of a spacer for laminectomy according to a fourth embodiment of the present invention.

12 to 14, the spacer for laminectomy according to the fourth embodiment of the present invention is compared with the third embodiment of the present invention described above, the first fastening member insertion hole of the first fixing part 20 The point that (21) includes three insertion holes, namely, the 1-1 fastening member insertion hole 21a, the 1-2 fastening member insertion hole 21b, and the 1-3 fastening member insertion hole 21c. There is a difference in Except for this, the rest of the configuration of the fourth embodiment of the present invention is the same as that of the third embodiment of the present invention.

On the other hand, in the fourth embodiment of the present invention, the 1-1 fastening member insertion hole (21a), the 1-2 fastening member insertion hole (21b), and the 1-3 fastening member insertion hole (21c) of the present invention. As described in connection with the second embodiment. Therefore, a detailed description thereof will be omitted.

15 is a rear perspective view of a spacer for laminectomy according to a fifth embodiment of the present invention.

Referring to FIG. 15, the spacer for laminectomy according to the fifth embodiment of the present invention has a third uneven portion on the contact surface of the first support portion 12 and the contact surface of the second support portion 13, respectively, compared with the third embodiment. There is a difference in that (12a) and the fourth uneven portion 13a are additionally formed. The rest of the configuration of the fifth embodiment of the present invention is the same as that of the third embodiment.

In this way, the third uneven portion 12a is formed on the contact surface of the first support portion 12 in contact with the cut surface 1021 of the first cut portion 102, and contacts the cut surface 1041 of the second cut portion 104. When the fourth uneven portion 13a is formed on the contact surface of the second support portion 13, a more stable fixed state can be secured by additionally securing frictional force.

16 is a rear perspective view of a spacer for laminectomy according to a sixth embodiment of the present invention.

Referring to FIG. 16, the spacer for laminectomy according to the sixth embodiment of the present invention has a third uneven portion on the contact surface of the first support portion 12 and the contact surface of the second support portion 13, respectively, compared with the fourth embodiment. There is a difference in that (12a) and the fourth uneven portion 13a are additionally formed. The rest of the configuration of the sixth embodiment of the present invention is the same as that of the fourth embodiment.

In the sixth embodiment of the present invention, the third uneven portion 12a and the fourth uneven portion 13a can provide an additional fixing force as described in connection with the fifth embodiment.

The spacer for laminectomy according to the embodiments of the present invention described above may be integrally formed. Specifically, in embodiments of the present invention, the body portion 10, the first fixing portion 20, and the second fixing portion 30 may be formed by bending one single member. For example, the body portion 10, the first fixing portion 20, and the second fixing portion 30 may be formed of a single plate member. In this way, when each component is not separately manufactured and combined, but is formed through bending of a single member, there is an advantage in terms of manufacturing efficiency and cost.

The spacer for laminectomy according to the embodiments of the present invention may be made of a titanium material. In more detail, the spacer for laminectomy according to the embodiments of the present invention may be made of pure titanium.

Although the embodiments of the present invention have been described, the spirit of the present invention is not limited by the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same idea. Other embodiments may be easily proposed by changes, deletions, additions, etc., but it will also be said to fall within the scope of the present invention.

10: body
11: separation
12: first support
13: second support
20: first fixing part
30: second fixing part

Claims (12)

A spacer for laminectomy for fixing a first cut part and a second cut part of the excised vertebral bone in a spaced state,
A body portion extending along the longitudinal direction;
A first fixing part connected to one side of the body part in the length direction so as to be fixed to the first cutting part; And
Includes; a second fixing part connected to the other side in the length direction of the body part so as to be fixed to the second cutting part,
The body part,
A spacing part disposed between the first cut part and the second cut part and formed to have a predetermined length to separate the first cut part and the second cut part,
A spacer for laminectomy comprising a first support portion formed by bending between the spaced portion and the first fixing portion to support the cut surface of the first cut portion. The method of claim 1,
The first support portion and the first fixing portion and the spacer for ligation forming an angle of 70 degrees or more and 110 degrees or less. The method of claim 1,
The first fixing portion includes two or more first fastening member insertion holes, wherein at least one of the two or more first fastening member insertion holes has a center formed on one side with respect to a central axis in the longitudinal direction, and at least one other The spacer for laminectomy having a center formed on the other side with respect to the central axis in the longitudinal direction. The method of claim 3,
The first fixing unit includes three first fastening member insertion holes, and a triangle is formed when the centers of each of the first fastening member insertion holes are connected. The method of claim 1,
The body portion further comprises a second support portion formed by bending between the spaced portion and the second fixing portion to support the cut surface of the second cut portion. The method of claim 5,
The second support part and the second fixing part formed an angle of 70 degrees or more and 110 degrees or less for laminectomy spacer. The method of claim 1,
The second fixing part is a spacer for laminectomy including a pair of second fastening member insertion holes formed symmetrically with respect to the central axis in the longitudinal direction. The method of claim 1,
A spacer for laminectomy having irregularities formed on at least a portion of at least one of a lower surface of the first fixing part, a lower surface of the second fixing part, and a support surface of the first support part. The method of claim 5,
A spacer for laminectomy having an uneven portion formed on at least a portion of the support surface of the second support portion. The method of claim 1,
The spacer for laryngeal angioplasty is formed to have a length of 4 to 18 mm of the spacing part. The method of claim 1,
The body part, the first fixing part and the second fixing part are formed integrally with a spacer for laminectomy. The method of claim 11,
The body part, the first fixing part, and the second fixing part are formed of a single plate member.

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