KR101563615B1

KR101563615B1 - Spacer for laminoplasty

Info

Publication number: KR101563615B1
Application number: KR1020140044664A
Authority: KR
Inventors: 서준혁; 송동률; 조명래; 정해준; 정은미
Original assignee: (주)시지바이오; 정은미
Priority date: 2014-04-15
Filing date: 2014-04-15
Publication date: 2015-10-28
Also published as: KR20150119520A

Abstract

According to the present invention, a first spacer fixed to an upper articulating plate in a state in which an incision surface of an upper articulating plate of the incised cervical vertebra is seated and supported; And a second spacer fixed to the lower gingival plate so that the incised surface of the lower gingival plate of the incisal cervical vertebra is contactably supported, wherein the first spacer and the second spacer are mutually extended in length, Spacers for plastic surgery are provided.

Description

Spacer for laminoplasty

The present invention relates to a spacer for laparotomy, and more particularly, to a spacer for laparotomy, and more particularly, to a spacer for a laparotomy, The first and second expandable joints are provided with a first expanding connection part and a second expanding connection part, respectively, so as to be able to be combined in an expandable state in length, .

The vertebrae are usually composed of 24 bones (except the sacrum), each bone is connected by joints, and a disc is placed between each joint, which not only supports the posture of the human being while buffering, It is the foundation and provides an important function to protect all the internal organs. However, when the vertebrae are injured or deformed due to external artificial factors, degenerative or abnormal posture for a long time, the nerve passing through the spinal canal is pressed and severe pain is caused.

Typical spinal diseases include spinal stenosis and ossification of posterior longitudinal ligament. Here, the spinal canal is a tubular hollow in the vertebrae, an inferior quadrant with an intervertebral foramen, and a central duct is a passage through which the nerve (spinal cord) passes from the brain to the limbs. The spinal stenosis refers to a disease caused by narrowing of the spinal canal, neural canal, or an intervertebral column in the middle of the spinal column to cause back pain or multiple complex neural symptoms in the legs. When the spinal column of the neck is narrowed, And lumbar spinal stenosis is called lumbar spinal stenosis. In addition, the posterior lumbar spinal stenosis means a disease in which a posterior spinal cord supporting the back of the vertebral body and the anterior end of the vertebral body causes an ossification hardening like a bone due to various causes, thereby compressing the nerve passing through the spinal canal .

Generally, laminoplasty is performed in which one or more of the bony vertebral structures surrounding the vertebral column and defining the boundaries are exchanged to form a wider space in the spinal canal, The spacers are located between the front and rear portions of the lamina to rigidly maintain the anterior and posterior portions of the detached state and thereby maximize the space of the spinal canal.

As described above, the spacer for laryngoplasty includes a first end fixed to the first incision located on the side of the cervical vertebra, and a second end fixed to the second incision located on the transverse side of the cervical vertebra, And a bone graft fixed to the lower portion is positioned in a cutting space between the first incision and the second incision so that the first end and the second end are fixed to each other by an external force, And a connecting portion for preventing the two ends from moving in the lateral direction.

However, the conventional spacer for the laryngoplasty has a fixed structure in which the first end, the second end, and the connecting portion are formed on a single plate so that the length is not variable.

Therefore, when the incision interval of the first incision part and the second incision part is varied during the operation, there is a problem that the fixed length of the spacer does not correspond to the incision interval, There is a problem that the spacers must be prepared.

In addition, the spacer has a structure in which a separate bone graft is fixed to the connection portion.

Therefore, when the incision interval of the first incision part and the second incision part is variable as described above, a bone graft having various sizes such that the bone graft can correspond to the incision gap should be prepared, And the operation of fixing the bone graft should be performed separately.

Further, since the spacer has a structure in which the first end and the second end are fixed by screws in a state in which they are in contact with the outer surfaces of the first incision and the second incision, respectively, There is a problem that a shear force is generated in the screw at the first end and the second end when stress is generated in the lateral direction due to the separation between the incision surface and the bone graft, .

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a cervical vertebra, comprising a first spacer portion for supporting and supporting a first incision of a cervical vertebra, and a second spacer for supporting and supporting the second incision portion, The present invention also provides a spacer for a gingival suture that can provide a fixation force to the cervical vertebrae and ease of operation by allowing the extended connection portions to have a function of a bone graft having a first expanded connection portion and a second expanded connection portion, respectively.

Meanwhile, the object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

Here, the first spacer may be fixed to the upper gum plate by being inserted into the upper gum plate after the screw passes through the upper gum plate in contact with the upper side of the upper gum plate. A seating part configured to be perpendicular to the fixing part and adapted to receive and support the incision surface of the upper hermaphroditic plate; And an upper extension coupling portion extending from a connection portion between the fixing portion and the seat portion and being extendably coupled to the second spacer.

In addition, the seat portion may include an inner wear shelf which is bent and extended from the fixing plate of the fixing portion at a predetermined angle, so that the incision surface of the upper geminal plate is seated and supported; And a support flange extending from the end of the inner wearer shelf at a predetermined angle to support a part of the lower side of the upper gauntlet plate.

The upper extension coupling portion may include a ratchet piece extending from the fixing plate and having a plurality of ratchet portions formed on the upper side thereof at a predetermined interval, A guide block formed on a lower surface of the ratchet piece; And an extension hole having an elliptical shape in a longitudinal direction in a state of being penetrated through both side surfaces of the guide block.

Meanwhile, the second spacer may be fixed to the lower gingival plate through a screw inserted into the lower gingival plate while being in contact with the upper side of the lower gingival plate, and then fixed to the lower gingival plate. A lower extension coupling portion extending from the fixing portion at a predetermined angle and being extendably coupled to the upper extension coupling portion of the first spacer; And a contact portion formed in the lower expanding coupling portion and adapted to contact and support the cut surface of the lower gyrus plate.

Also, the lower expanding coupling portion may include: a ratchet portion formed on the fixing plate of the fixing portion at a predetermined angle and having a ratchet formed at a predetermined interval on the lower side; A guide waist defining a lower side of the ratchet and providing a guide space for inserting and guiding the upper extension engaging portion; And an engaging hole formed on both side surfaces of the guide body so as to allow the engaging bar to pass through from the outside when the upper expanding engaging part is inserted into the guide body.

Therefore, according to the present invention, the first spacer portion for allowing the first incision portion of the cervical vertebra to be seated and supported, and the second spacer for supporting the second incision portion in contact with each other can be coupled in a state in which the length can be extended, The first and second expandable joints may be provided with the functions of the bone graft to improve fixation force and ease of operation of the cervical vertebrae.

On the other hand, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

FIG. 1 is a perspective view of a spacer for laminectomy according to a preferred embodiment of the present invention; FIG.
FIG. 2 is an exploded perspective view showing a spacer for the scalpel of FIG. 1; FIG.
FIGS. 3A and 3B are enlarged views of a spacer for a scalpel of FIG. 1;
Fig. 4 is a view showing a state in which the spacer for the abacus surgery of Fig. 1 is fixed to the cervical vertebra; Fig.

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

FIG. 1 is a perspective view showing a spacer for a scalpel according to a preferred embodiment of the present invention, FIG. 2 is an exploded perspective view showing a spacer for scalpel of FIG. 1, and FIGS. 3a and 3b show a spacer for a scalpel of FIG. FIG. 4 is a view showing a state in which the spacer for the epigastrium of FIG. 1 is fixed to the cervical vertebra.

1 to 4, a spacer for laparotomy according to a preferred embodiment of the present invention includes a cut surface 11a of the upper gum plate 11 among the gum plates 10 of the incised cervical vertebrae 1, A first spacer 100 fixed to the upper gingham plate 11 in a state where the lower gingham plate 12 is seated and supported on the incision surface 12a of the lower gingival plate 12 among the gingham plates 1 of the incised cervical vertebrae 1, And a second spacer 200 fixed to the lower gimlet plate 12 so that the first spacer 100 and the second spacer 200 can be held in contact with each other.

The first spacer 100 is inserted into the upper guminal plate 11 through a screw inserted into the upper guminal plate 11 in a state in which the incision surface 11a of the upper guminal plate 11 of the incised cervical vertebra is seated and supported, (11), which is fixed to the upper gimlet plate (11) by being inserted into the upper gimlet plate (11) after passing through the screw in a state of being in contact with the upper side of the upper gimlet plate (11) A fixing part 110 formed vertically to the fixing part 110 and allowing the incision surface 11a of the upper trunk plate 11 to be seated and supported; And an upper extension coupling part 130 extending from a connection part of the second spacer 200 and being expandably coupled to a lower extension coupling part 220 of a second spacer 200 described later.

The fixing part 110 includes a fixing plate 111 which is in contact with an upper surface of the upper gaff plate 11 and a fixing hole 112 formed in the fixing plate 111 and through which the screw is inserted. Here, it is preferable that the fixing plate 111 has a width corresponding to the outer circumferential width of the upper gimlet plate 11 and a predetermined length, thereby maximizing the contact area.

The seating part 120 includes an inner wrapping shelf 121 perpendicular to the fixing plate 111 and adapted to receive and support the cut surface 11a of the upper gingham plate 11, And a support flange 122 extending from the end of the upper gimlet plate 121 at a predetermined angle to support a part of the lower side of the upper gimlet plate 11. The supporting flange 122 has a supporting protrusion 122a protruding at a predetermined height so that the upper face of the upper gum plate 11 and the cut face 11a and the lower face of the supporting flange 122 are fixed to the fixing plate 111 ), The inner wearer shelf 121 and the support flange 122 to be more stably fixed and supported. It is preferable that the length of the underwearing shelf 121 corresponds to the thickness of the incision surface 11a of the upper geminate plate 11.

The upper extension coupling part 130 is extended to be bent at a predetermined angle from a connection part between the fixing plate 111 and the inner wearer shelf 121 and has a plurality of ratchets 131a formed on the upper side thereof, Shaped guide block 132 formed on the lower side of the ratchet piece 131 and an extension formed in the shape of an ellipse in the longitudinal direction in a state of passing through both side surfaces of the guide block 132. [ And a ball 133.

Therefore, according to the first spacer 100, the cut surface 11a of the upper gimlet plate 11 is seated and supported by the seating portion 120 when the fixing portion 110 is fixed to the upper gimlet plate 11 And can be fixed to the upper trunk plate 11 in a more stable state.

The first spacer 100 is made of a pure titanium material having a predetermined elasticity so that the length of the inner wearer shelf 121 of the seating portion 120 is greater than the length of the cut surface 11a The upper side of the upper gimlet plate 11 and the lower side face of the upper gimlet plate 11 are supported by the supporting bracket 121 and the supporting flange 122, respectively, The fixing plate 111 of the fixing portion 110 may be bent or pinched toward the upper side of the upper trunk plate 11 even if the fixing plate 111 of the fixing portion 110 has a predetermined gap therebetween, The seat 11 can be stably supported.

That is, it is preferable that the first spacer 100 has a material of pure titanium having a predetermined elastic force. Therefore, it is possible to change the shape of the upper trunk plate 11 during the fixing operation, So that the fixing operation can be performed.

The fixing plate 111, the inner wear shelf 121, and the support flange 122, which are in contact with the upper surface of the upper trunk plate 11 and the cut surface 11a and the lower surface, And a contact state.

The second spacer 200 is placed on the lower gonio plate 12 in a state in which the cut surface 12a of the lower gonio plate 12 among the gonio plates 10 of the incised cervical vertebrae 1 is held in contact with each other And is fixed to the lower grommet plate 12 through a screw so that the screw is inserted into the lower grommal plate 12 while being in contact with the upper surface of the lower gimlet plate 12, A first spacer 100 extending from the fixing portion 210 at a predetermined angle and being extendably coupled to the upper extension coupling portion 130 of the first spacer 100, And a contact portion formed on the lower expansion joint portion to have a vertical angle with respect to the fixing portion and adapted to contact and support the incision surface of the lower gonio plate, (230).

The fixing portion 210 includes a fixing plate 211 contacting the upper surface of the lower gimlet plate 12 and a fixing hole 212 formed in the fixing plate 211 and allowing the screw to pass therethrough. Here, the fixing plate 211 preferably has a width and a predetermined length corresponding to the width of the outer circumferential surface of the lower gimlet plate 21, thereby maximizing the contact area.

The lower expansion joint 220 includes a ratchet 221a extending from the fixed plate 211 at a predetermined angle and corresponding to the ratchet 131a of the ratchet 131 of the upper expansion joint 130, The ratchet pieces 221 and the ratchet pieces 221 of the ratchet piece 221 are inserted and guided by the ratchet pieces 131 and the guide blocks 132 of the upper expansion joint 130, A guide yaw body 222 for providing a guide space 222a and guide blocks 132 of the upper expansion joint 130 formed on both side surfaces of the guide yaw body 222, A coupling bar C penetrating from the outside is inserted to allow the ratchet 131a and 221a to maintain its state when the ratchet 131a and 221a are coupled to each other, (Not shown).

The contact portion 230 is formed on the guide yaw body 222 of the lower expansion joint 220 so as to have an angle perpendicular to the fixing plate 211 so that the incision surface 12a of the lower gonio plate 12, And a contact surface 231 to be contact-supported.

Accordingly, according to the second spacer 200, when the cut-off surface 12a of the lower gonio plate 12 is seated and supported by the contact portion 230 when the fixing portion 210 is fixed to the lower gonio plate 12 And can be fixed to the lower gimlet plate 12 in a more stable state.

Since the second spacer 200 is made of a titanium material having little elasticity, the second gimbal plate 12 is prevented from being varied in its fixing position during the fixing operation, so that the second spacer 200 can have a more stable fixing state.

In addition, the fixing plate 211 and the contact surface 231, which are in contact with the upper and lower cutting edges 12a and 12b, may have irregularities to provide more stable seating and contact.

Hereinafter, the action and effect of the spacer for the laryngoplasty having the above-described structure will be described.

First, the spacer for splinting according to the present invention has a length varying through an upper expansion joint 130 and a lower expansion joint 220, in which the first spacer 100 and the second spacer 200 are respectively formed. .

That is, the spacer for laparotomy according to the present invention is inserted into the guide space 222a of the guide body 222 of the lower expansion joint 220 by inserting the guide block 132 of the upper expansion joint 130 The ratchet pieces 131 of the upper expansion joint 130 are coupled to the ratchet pieces 221 of the lower expansion joint 220 in a ratchet fashion and then the ratchet pieces 221 of the lower expansion joint 220 The coupling state of the ratchet pieces 131 and 221 of the ratchet pieces 131 and 221 is stably maintained by the coupling bar C penetrating the extension hole 133 of the upper expansion joint 130. At this time, The lengths of the upper expansion joint 130 and the lower expansion joint 220 may vary depending on the coupling position.

Therefore, even if the cutting gap between the upper and lower gingival arch plates 11 and 12 is variable during the operation, the upper extension joint 130 and the lower extension joint 220 have a ratchet structure So that it is possible to easily perform an operation by expanding or contracting in the field without preparing spacers having various lengths.

Since the upper expansion joint 130 and the lower expansion joint 220 are coupled to each other in a ratchet structure and extendable as described above, the upper and lower expansion joints 130 and 220 can not be reduced in the extended state, It is possible to maintain a stable expansion state. Further, it is preferable that the interval between the ratchet 131a and the ratchet 221a is 2 mm.

The first spacers 100 and the second spacers 200 are connected to the upper and lower gendarmes 11 and 12 through the upper expansion joint 130 and the lower expansion joint 220, ) Are fixed to the upper and lower gingham plates (11, 12).

The fixing plate 111 of the fixing part 110 of the first spacer 100 and the fixing part 111 of the second spacer 200 are fixed to the upper side of the upper gimlet plate 11 and the upper side of the lower gimlet plate 12, The cutting face 11a and the lower face of the upper gingham plate 11 are fixed to the inner wear shelf 120 of the first spacer 100 seating portion 120. In this case, The cutting face 12a of the lower gingham plate 12 is in contact with the contact surface of the second spacer 200 contact portion 230 231 in a state of being stably contacted and supported.

Therefore, the incision surface 11a of the upper gum plate 11 and the lower gum base plate 12 of the upper gum plate 11 can be formed without forming a bone graft filled in the gap between the upper gum plate 11 and the lower gum plate 12, So that it is possible to have a state in which the incision surface 12a of the bone graft 12a is stably seated and in contact with the bone graft 12a so that the preceding operation for separately preparing the bone graft and bonding it to the spacer can be omitted, So that the fixing force of the fixing member can be improved.

Although the present invention has been described with reference to the specific embodiments, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should not be limited by the embodiments described, but should be determined by the claims and their equivalents.

Claims

A first spacer 100 fixed to the upper gimlet plate 11 in a state where the incision surface 11a of the upper gimlet plate 11 among the gimlets 1 of the incised cervical vertebrae 1 is seated and supported;
And a second spacer 200 fixed to the lower gonio plate 12 so that the incision surface 12a of the lower gonio plate 12 among the gonio plates 10 of the incised cervical vertebrae 1 is contactably supported,
The first spacer (100)
A fixing part 110 fixed to the upper gimlet plate 11 by being inserted into the upper gimlet plate 11 after the screw penetrates in contact with the upper side of the upper gimlet plate 11;
A seating part 120 perpendicular to the fixing part 110 and allowing the incision surface 11a of the upper gum plate 11 to be seated and supported; And
And an upper extension coupling part 130 extending from a connection part between the fixing part 110 and the seating part 120 and being extendably coupled to the second spacer 200,
The second spacer (200)
A fixing part 210 fixed to the lower gingival plate 12 through being screwed into the lower gingival plate 12 after the screw penetrates in contact with the upper side of the lower gingival plate 12;
A lower extension coupling part 220 extending from the fixing part 210 at a predetermined angle and being extendably coupled to the upper extension coupling part 130 of the first spacer 100; And
And a contact portion (230) formed on the lower expansion joint portion (220) to contact and support the cut surface (12a) of the lower gonio plate (12).

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2. The apparatus of claim 1, wherein the seating portion (120)
A shelf 121 extending from the fixing plate 111 of the fixing part 110 at a predetermined angle to extend and support the incision surface 11a of the upper gum plate 11;
And a support flange (122) extending from the end of the inner wear shelf (121) at a predetermined angle to support a part of the lower side of the upper geminate plate (11).

The connector according to claim 1, wherein the upper expansion joint (130)
A ratcheting piece 131 extending from the fixing plate 111 of the fixing part 110 and having a plurality of ratchets 131a formed on the upper side thereof at regular intervals;
A guide block 132 formed on a lower side of the ratchet piece 131; And
And an extension hole (133) formed in a shape of an ellipse in a longitudinal direction while passing through both side surfaces of the guide block (132).

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[3] The apparatus of claim 1, wherein the lower expansion joint (220)
A ratchet piece 221 formed on the fixing plate 211 of the fixing part 210 at a predetermined angle and having a ratchet 221a formed at a predetermined interval on the lower side;
A guide waist body 222 provided on a lower side of the ratchet piece 221 to provide a guide space 222a for inserting and guiding the upper extension engaging part 130; And
And an engaging hole 223 formed on both side surfaces of the guide waist body 222 and through which the engaging bar C penetrating from the outside when the upper extension engaging part 130 is inserted is inserted into the guide yaw body 222 Wherein the spacer is used as a spacer.

7. The apparatus according to claim 6, wherein the contact portion (230)
And a contact surface 231 formed on the guide body 222 so as to have an angle perpendicular to the fixed plate 211 so that the cut surface 12a of the lower gong plate 12 is contactably supported. Spacer for laparoscopic surgery.