KR20220126347A - Surgical rod connector - Google Patents

Abstract

The present invention relates to a surgical rod connector comprising: a housing which has an accommodation part formed on one side to accommodate a head of a rod coupler to which a rod is coupled, a seating part formed on the other side to enable an extension rod to be seated, and a communication part communicating the accommodation part and the seating part; a pressurizing member which is fastened to the seating part to pressurize the extension rod, and seating the extension rod to the seating part; and a pusher which is provided to be movable along the communication part, moves to the head side of the rod coupler when the pressurizing member pressurizes the extension rod, and pressurizes the head of the rod coupler. According to the present invention, the surgical rod connector can be miniaturized and have improved strength and adhesion, since the housing surrounding the head of the rod coupler is integrally formed.

Description

Rod connector for surgery {SURGICAL ROD CONNECTOR}

The present invention relates to a rod connector for surgery in which a housing surrounding the head of a rod coupler is integrally formed.

In general, the spine usually consists of 24 bones (excluding the sacrum), which are connected by joint nodes, and between each joint, the body moves or joints A disk is positioned to absorb the shock and support the load whenever it is operated.

By this configuration, the spine not only supports human posture while acting as a buffer, but also serves as the basis for movement and plays an important role in protecting all internal organs.

However, when the spine is damaged or distorted due to external artificial factors, degeneration, or an abnormal posture for a long time, it causes severe pain by compressing the nerve passing through the spinal canal.

Such spine-related diseases include disc herniation, spondylolysis, scoliosis, vertebral fractures, and instability. It is corrected in the correct position and surgery to fix it is performed.

When performing spine-related surgery, a spinal fixation device is used to align the spine. Such a spinal fixation device is generally composed of a plurality of pedicle screws installed on the vertebrae to serve as a fixture, and a rod for interconnecting the plurality of pedicle screws and supporting the back of the spine.

However, the position at which the pedicle screw is inserted varies depending on the position or shape of the spine and the lesion of the spine.

A conventional rod connector for surgery includes a ring-shaped connection part surrounding the head of the pedicle screw, and a tightening nut screwed to the outer circumferential surface of the connection part to tighten the connection part to the head of the pedicle screw.

In the conventional rod connector for surgery, the size of the tightening nut is enlarged as the tightening nut is screwed to the outer circumferential surface of the connection part. As a result, in the conventional rod connector for surgery, when the distance between the two adjacent rod coupling sections coupled to the rod is narrow, as the tightening nut is caught between the two adjacent rod coupling sections, the rod connector for surgery cannot be used. There was an impossible problem.

In addition, the conventional rod connector for surgery has a problem in that the strength of the connection is weak or bulky due to a structural problem, and as a large opening of the surgical site is required, the difficulty of the operation increases.

Domestic Registered Patent Publication No. 10-2023127 (2019.09.11)

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a rod connector for surgery that can be miniaturized and can improve strength and adhesion by integrally forming a housing surrounding the head of a rod coupler it is to do

In addition, another object of the present invention is to provide a rod connector for surgery that can be connected without a large opening of the surgical site when connecting the extension rod to the screw head and the rod fastened to the surgical site.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In the rod connector for surgery according to an embodiment of the present invention for solving the above-described problems, a receiving portion for accommodating the head of the rod coupler to which the rod is coupled is formed on one side, and a seating portion on which the extension rod is seated is formed on the other side, a housing in which a communication part communicating with the receiving part and the seating part is formed; a pressing member fastened to the seating portion to press the extension rod, and seating the extension rod to the seating portion; and a pusher provided to be movable along the communication part, and when the pressing member presses the extension rod, it moves toward the head of the rod coupler to press the head of the rod coupler.

In addition, provided in the housing, the rod coupled to the head of the rod coupler may further include a mounting portion on which the rod is mounted.

In addition, when the pusher presses the head of the rod coupler, the rod may be caught and maintained by the mounting portion.

In addition, the pusher and the mounting portion may be provided at the same height as each other.

In addition, the pressing member may be screw-coupled to the seating portion.

In addition, the pusher, a first inclined portion provided to be inclined at one end adjacent to the receiving portion; and a second inclined portion provided to be inclined at the other end portion adjacent to the seating portion.

In addition, the first inclined portion and the second inclined portion may have a curved shape with a predetermined curvature.

In addition, when the pusher presses the head of the rod coupler, the first inclined portion may be in close contact with the curved portion of the head of the rod coupler, and the second inclined portion may be in close contact with the outer circumferential surface of the extension rod.

Other specific details of the invention are included in the detailed description and drawings.

The rod connector for surgery according to an embodiment of the present invention is integrally formed with a housing surrounding the head of the rod coupler, thereby making it possible to miniaturize and improve strength and adhesion.

In addition, the rod connector for surgery according to an embodiment of the present invention can be connected without a large opening of the surgical site when connecting the extension rod to the rod and the head of the rod coupler fastened to the surgical site.

In addition, the rod connector for surgery according to an embodiment of the present invention has a smaller volume than the existing rod connector, and can be connected to the head of the rod coupler in a downward manner, so the connection difficulty is low and the scope of application is wide.

In addition, since the rod connector for surgery according to an embodiment of the present invention does not have a gap between the housing and the head of the rod coupler, it can be used even if the distance between the two rod couplers coupled to the rod is narrow.

In addition, since the rod connector for surgery according to an embodiment of the present invention fixes the head and the extension rod of the rod coupler with an integrated housing, it is possible to prevent micro shake such as torsion.

In addition, since the rod connector for surgery according to an embodiment of the present invention can be miniaturized, it can be fastened to the head of the rod coupler coupled to the lumbar-sacrum region.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a rod connector for surgery according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a rod connector for surgery according to an embodiment of the present invention.
3 is a plan view showing a rod connector for surgery according to an embodiment of the present invention.
4 to 6 are operational views showing a process of connecting the rod connector and the extension rod coupled to the head of the rod connector for a procedure according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

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

Figure 1 is a perspective view showing a rod connector for surgery according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a rod connector for surgery according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention It is a plan view showing the rod connector for surgery according to

1 to 3 , the rod connector for surgery according to an embodiment of the present invention includes a housing 100 , a pressing member 200 and a pusher 300 .

The housing 100 serves to interconnect the rod 20 and the extension rod 30 coupled to the rod coupler 10 . To this end, the housing 100 is formed with a receiving part 110 for accommodating the head 11 of the rod coupler 10 to which the rod 20 is coupled on one side, and the extension rod 30 is seated on the other side. The seating part 120 is formed, and the communication part 130 communicating the receiving part 110 and the seating part 120 is formed. Here, the rod coupler 10 may be a pedicle screw. In addition, the head 11 of the rod coupler 10 may be defined as a portion exposed to the outside of the patient's bone without being embedded in the patient's bone.

The accommodating part 110 may be formed in a vertically penetrating form on one side of the housing 100 . At least one of the front and rear of the receiving unit 110 may be provided with a mounting unit 140 on which the rod 20 coupled to the head 11 of the rod coupler 10 is mounted. 140) will be described later.

The seating part 120 may be formed in a shape recessed in the upper surface or the lower surface of the other side of the housing 100 . Here, the seating part 120 may be formed in a curved shape with a predetermined curvature. In addition, a thread may be formed on the inner surface of the seating part 120 , and the thread may be formed only in one region adjacent to the distal end of the seating part 120 .

The communication part 130 may be formed so as to communicate with the receiving part 110 and the seating part 120 between the receiving part 110 and the seating part 120 . The pusher 300 may be movably provided in the communication part 130 .

Additionally, the housing 100 may include a cradle 140 .

The mounting unit 140 is provided in the housing 100 , and the rod 20 is mounted thereon. As described above, the mounting unit 140 may be provided on at least one of the front and rear sides of the receiving unit 110 . The mounting unit 140 may be formed in the form of a hook in which a predetermined area of the receiving unit 110 is cut. The hook shape may be formed in various directions depending on the surgical environment, the lesion shape, and the rod 20 coupling method, but is preferably formed in a direction in which the rod 20 can be mounted.

The pressing member 200 is fastened to the seating part 120 to press the extension rod 30 , and serves to seat the extension rod 30 on the seating part 120 .

The pressing member 200 may be screw-coupled to the seating part 120 , and at this time, by adjusting the length at which the pressing member 200 is screwed to the seating part 120 , the pressing member 200 may be screwed into the extension rod 30 . ), the strength of the pressing force and the distance the extension rod 30 moves in the direction of pressing the pusher 300 can be adjusted.

The pusher 300 is provided to be movable along the communication part 130 , and as the pressing member 200 presses the extension rod 30 , it moves toward the head 11 of the rod coupler 10 and moves to the rod coupler. (10) serves to press the head (11).

In this way, when the pusher 300 presses the head 11 of the rod coupler 10 , the head 11 of the rod coupler 10 is stopped, but the pusher 300 is the head of the rod coupler 10 . As the accommodating part 110 moves toward the pusher 300 due to a reaction to the action of pressing (11), one side of the accommodating part 110 is in close contact with the head 11 of the rod coupler 10. . As a result, the head 11 of the rod coupler 10 may be fixed to the receiving portion 110 .

And, when the pusher 300 presses the head 11 of the rod coupler 10, the rod 20 may also be in close contact with the mounting unit 140, which is a reaction described above, and the receiving unit 110 pushes the pusher. This is because the rod 20 is in close contact with the mounting unit 140 as the holder 140 provided in the receiving unit 110 also moves toward the pusher 300 when moving toward the 300 .

In addition, the pusher 300 includes a first inclined portion 310 provided to be inclined at one end adjacent to the receiving part 110 , and a second inclined portion 320 provided to be inclined at the other end adjacent to the seating part 120 . ) can have

Here, the first inclined portion 310 and the second inclined portion 320 may have a curved shape with a predetermined curvature. Therefore, when the pusher 300 presses the head 11 of the rod coupler 10 , the first inclined portion 310 is in close contact with the curved portion of the head 11 of the rod coupler 10 , The second inclined portion 320 may be in close contact with the outer circumferential surface of the extension rod 30 . Accordingly, when the pusher 300 presses the head 11 of the rod coupler 10 , the connection between the pusher 300 and the head 11 of the rod coupler 10 is performed by the first inclined portion 310 . As the area is increased, the force of the pusher 300 pressing the head 11 of the rod coupler 10 is distributed, thereby preventing breakage of one end of the pusher 300 . In addition, when the pusher 300 presses the head 11 of the rod coupler 10, the contact area between the pusher 300 and the extension rod 20 is widened by the second inclined portion 320, so that the extension As the force that the rod 30 presses the pusher 300 is distributed, it is possible to prevent damage to the other end of the pusher 300 as well.

Meanwhile, the pusher 300 and the mounting unit 140 may be provided at the same height as each other. Therefore, since the height in which the pusher 300 presses the head 11 of the rod coupler 10 and the height in the direction in which the rod 20 is caught by the mounting portion 140 are equal to each other, the rod 20 ) may be firmly engaged with the mounting portion 140 .

Hereinafter, a process of connecting the rod 20 and the extension rod 30 coupled to the head 11 of the rod coupler 10 by the rod connector for surgery according to an embodiment of the present invention will be described.

4 to 6 are operations showing a process of connecting the rod 20 and the extension rod 30 coupled to the head 11 of the rod connector 10 for a procedure rod connector according to an embodiment of the present invention it is do

First, referring to FIG. 4 , the head 11 of the rod coupler 10 is accommodated in the receiving part 110 of the housing 100 , and the rod coupler 10 is accommodated in the mounting part 140 of the housing 100 . The rod 20 coupled to the head 11 of ) is inserted.

Next, referring to FIG. 5 , the extension rod 30 is seated on the seating portion 120 of the housing 100 .

Then, referring back to FIG. 5 , the pressing member 200 may be screwed to the seating part 120 to press the extension rod 30 seated on the seating part 120 . Here, when the length at which the pressing member 200 is screwed to the seating portion 120 is adjusted, the strength of the force of the pressing member 200 pressing the extension rod 30 can be adjusted. In addition, as the pressing member 200 is screwed to the seating part 120 , it is possible to prevent the extension rod 30 from being separated from the seating part 120 .

Next, referring back to FIG. 5 , as the extension rod 30 is pressed by the pressing member 200 , the extension rod 30 presses the pusher 300 . As a result, the pusher 300 moves toward the head 11 of the rod coupler 10 to press the head 11 of the rod coupler 10 .

Then, referring to FIG. 6 , as the pusher 300 presses the head 11 of the rod coupler 10 , the head 11 of the rod coupler 10 stops, but the pusher 300 moves the rod Due to a reaction against the action of pressing the head 11 of the coupler 10 , the receiving part 110 moves toward the pusher 300 to be in close contact with the head 11 of the rod coupler 10 . As a result, the head 11 of the rod coupler 10 may be fixed to the receiving portion 110 .

And, referring back to FIG. 6 , when the pusher 300 presses the head 11 of the rod coupler 10 , the rod 20 coupled to the head 11 of the rod coupler 10 is also mounted. It may be in close contact with the part 140 . This is because when the receiving part 110 moves toward the pusher 300 due to the above-described reaction, as the mounting part 140 provided in the receiving part 110 also moves toward the pusher 300, the rod 20 is mounted This is because it is in close contact with the part 140 .

According to the present invention, the rod connector for surgery according to an embodiment of the present invention is integrally formed with a housing surrounding the head of the rod coupler, so that it can be miniaturized and improve strength and adhesion.

In addition, the rod connector for surgery according to an embodiment of the present invention can be connected without a large opening of the surgical site when connecting the extension rod to the rod and the head of the rod coupler fastened to the surgical site.

In addition, the rod connector for surgery according to an embodiment of the present invention has a smaller volume than the existing rod connector, and can be connected to the head of the rod coupler in a downward manner, so the connection difficulty is low and the scope of application is wide.

In addition, since the rod connector for surgery according to an embodiment of the present invention does not have a gap between the housing and the head of the rod coupler, it can be used even if the distance between the two rod couplers coupled to the rod is narrow.

In addition, since the rod connector for surgery according to an embodiment of the present invention fixes the head and the extension rod of the rod coupler with an integrated housing, it is possible to prevent micro shake such as torsion.

In addition, since the rod connector for surgery according to an embodiment of the present invention can be miniaturized, it can be fastened to the head of the rod coupler coupled to the lumbar-sacrum region.

As mentioned above, although embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

10: rod coupler
11: head
20: load
30: extension rod
100: housing
110: receiving unit
120: seating part
130: communication unit
140: mount
200: pressing member
300: pusher
310: first inclined unit
320: second inclined unit

Claims (8)

A housing having a receiving portion accommodating the head of the rod coupler to which the rod is coupled is formed on one side, a seating portion on which an extension rod is seated is formed on the other side, and a communication portion communicating the receiving portion and the seating portion is formed;
a pressing member fastened to the seating portion to press the extension rod, and seating the extension rod to the seating portion; and
Provided to be movable along the communication portion, when the pressing member presses the extension rod, the rod connector for surgery, characterized in that it comprises a pusher that moves to the head side of the rod coupler to press the head of the rod coupler. According to claim 1,
Provided in the housing, the rod connector for surgery, characterized in that it further comprises a mounting portion on which the rod coupled to the head of the rod coupler is mounted. 3. The method of claim 2,
When the pusher presses the head of the rod coupler, the rod connector for surgery, characterized in that the rod is held in the mounting portion. 3. The method of claim 2,
The pusher and the mounting portion,
A rod connector for surgery, characterized in that it is provided at the same height as each other. According to claim 1,
The pressure member is a rod connector for surgery, characterized in that screw-coupled to the seating portion. According to claim 1,
The pusher is
a first inclined portion provided to be inclined at one end adjacent to the receiving portion; and
A rod connector for surgery, characterized in that it has a second inclined portion provided to be inclined at the other end adjacent to the seating portion. 7. The method of claim 6,
The first inclined portion and the second inclined portion,
A rod connector for surgery, characterized in that it has a curved shape with a certain curvature. 8. The method of claim 7,
When the pusher presses the head of the rod coupler, the first inclined portion is in close contact with the curved portion of the head of the rod coupler, and the second inclined portion is in close contact with the outer peripheral surface of the extension rod. connector.

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