JPH10127672A - End button for fixing reconstructed ligament with ball-shaped cable crimp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an end button with which a reconstructed ligament can be strongly fixed while using a cable and the fixed cable can be speedily pulled out of a bone hole, rotated and fixed by one thread when it gets out of the bone hole. SOLUTION: A ball part 5 is installed at a crimp part 6 for passing and fixing the cable so that a ball-shaped cable crimp can be provided. At the center of a slender plate-shaped body part 1 having a hole 3 for drawing end button at its one end, a valley part 2 is provided for housing the ball-shaped cable crimp while making a curved surface as its bottom and on both the slopes of the valley part 2 and at its center, a groove 4 parallel to the major axis of the slender end button is provided wider than the cross-sectional diameter of the crimp part 6 of the ball-shaped cable crimp but narrower than the diameter of the ball part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end button for fixing a reconstruction ligament with a spherical cable crimp for fixing a reconstruction ligament using a cable or a string or a thread substituted for the cable in a ligament reconstruction operation. .

[0002]

2. Description of the Related Art Conventionally, when fixing a reconstructed ligament, an end button which is pulled out from a bone hole using a thread and fixed is used. However, the thread is weak in strength as a fixing material and may be cut or loosened early after the operation. Also,
Since ordinary thread is not shown on the radiograph, even if it is twisted during the operation or cut or loosened after the operation, it cannot be seen on the radiograph. Therefore, these problems can be solved by using a metal cable instead of a thread. However, in the case of the conventional flat end button, since a stopper (crimp) for fixing the cable protrudes, there is an inconvenience that when the cable is pulled out from the bone hole, it is easily caught in the bone hole and is difficult to be pulled out.

[0003] In the conventional end button, when the button is taken out of the bone hole and fixed, the two buttons attached to both ends of the elongated button are manipulated, and the button is rotated to put both ends into the bone hole. It was fixed so as not to get out. However, it is troublesome to pass two threads through the bone hole, and if the two threads are entangled in the bone hole or skin, there is a disadvantage that the button cannot be rotated by manipulating the threads.

[0004]

According to the present invention, the reconstruction ligament can be firmly fixed using a cable, and when the end button is pulled out from the bone hole, the crimp for fixing the cable does not catch on the bone hole. It is an object of the present invention to provide an end button that enables a single thread to rotate and fix the button when it is out of the bone hole.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an end button for fixing a reconstructed ligament with a spherical cable crimp. In order to solve the above-mentioned problems, first, a crimp portion 6 for passing and fixing a cable is attached to a crimp portion. A spherical cable crimp is formed by attaching a spherical portion 5 having a diameter larger than the cross-sectional diameter of 6. A valley 2 having a bottom surface with a curved surface having a radius of curvature equal to or slightly larger than the diameter of the spherical portion 5 of the spherical cable crimp at the center of an elongated flat body 1 provided with a hole 3 for pulling out an end button at one end. And the valley 2 is wider than the cross-sectional diameter of the crimp 6 of the spherical cable crimp,
An elongated groove 4 having a width smaller than the diameter of the spherical portion 5 and parallel to the long axis of the end button is formed. Pass the cable through the groove 4
The cable is fixed in the valley 2 with a spherical cable crimp so that the sphere 5 is at the end. The crimp 6 of the spherical cable crimp enters the groove 4, and the sphere 5 is housed in the valley 2. With the above structure, means for solving the above problems are taken.

[0006]

According to the present invention, the above-mentioned means are taken, so that in use, a cable for fixing a ligament is passed through the groove 4 from outside the trough 2 and the end of the cable is crimped in the trough 2. Pass the spherical cable crimp from the part 6 side. When the cable is pulled so that the cable is fixed to the spherical cable crimp by tightening the crimp portion 6 and the spherical cable crimp is housed in the valley portion 2, the width of the groove 4 becomes larger than the cross-sectional diameter of the crimp portion 6. Since it is wide and narrower than the diameter of the ball portion 5, the crimp portion 6 passes through the groove 4, but the ball portion 5 is caught in the groove 4,
The spherical cable crimp with the cable attached is fixed to the reconstruction ligament fixation end button.

When the end button for fixing the reconstructed ligament with the spherical cable crimp with the cable attached is passed through the bone hole, the thread 7 for pulling out the end button passed through the hole 3 for pulling out the end button is first passed through the bone hole. Keep it. When the thread 7 is pulled while the cable is loosened, the end button can be passed through the bone hole without the ball portion 5 of the spherical cable crimp being caught in the bone hole remaining in the valley portion 2.

When the end button for fixing the reconstruction ligament with the spherical cable crimp has completely exited from the bone hole, the thread 7 for pulling out the end button is slightly loosened, and the cable is slowly pulled to the opposite side. The portion 5 produces a force perpendicular to the groove in contact with the ball portion 5, and at the same time, the crimping portion 6 applies a force to push up the edge of one end of the groove 4 in contact with the groove, which is a force for rotating the end button. Then, the end button rotates. When the end button is rotated, the end of the end button close to the bone hole is caught in the bone hole, and when the wire is further pulled with the fulcrum as a fulcrum, the end button is further rotated, and the valley 2 of the end button is drawn into the bone hole. The button is fixed in the bone hole.

When the cable is fixed using an end button in a bone hole close to the skin, the spherical cable crimp for fixing the cable is settled in the valley 2 so that the crimp does not easily protrude under the skin. ing.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in more detail with reference to the drawings.

FIG. 1 shows an embodiment of the end button for fixing a reconstructed ligament with a spherical cable crimp. The crimp portion 6 of the spherical cable crimp on which the cable is fixed enters the groove 4 of the end button for fixing a reconstructed ligament. Is pulled, the ball portion 5 is caught by the groove 4 and is fixed to the valley portion 2.

FIGS. 2 and 3, 4 and 5 show an embodiment of the end button for fixing a reconstructed ligament. An elongated flat body part 1 is provided with a hole 3 for passing a thread 7 like an end button drawer at one end. Then, a valley 2 composed of two surfaces facing each other is provided at the center of the body 1, and the bottom of the valley 2 is a curved surface, and the radius of curvature is equal to the radius of curvature of the sphere 5 of the spherical cable crimp,
Slightly larger. At both slopes and at the center of the valley portion 2, a groove 4 parallel to the long axis is provided in the end button in which the crimp portion 6 of the spherical cable crimp for fixing the cable fits. The width of the groove 4 is larger than the cross-sectional diameter of the crimp portion 6 of the spherical cable crimp and smaller than the diameter of the ball portion 5.

FIGS. 6, 7, 8, and 9 show an embodiment of a spherical cable crimp in which one end of a cylindrical crimp portion 6 through which a cable is fixed has a diameter larger than the cross-sectional diameter of the crimp portion 6. FIG. The ball part 5 is installed, and the ball part 5 is provided with a hole continuous with the crimp part 6 for passing a cable.

In the reconstructed ligament fixing end button of this embodiment, the groove 4 may be provided from the end of the valley 2 to the end thereof in parallel with the long axis of the elongated body 1, but when the cable is pulled,
It is desirable not to provide at the both ends of the valley, but to provide only near the center so that the force for rotating the end button works more strongly.

In the end button for fixing the reconstructed ligament of this embodiment, the inclination of the both ends of the valley 2 may be large or small, or may be flat or curved. It is desirable to have a proper inclination so that a large rotating force can be obtained and the bone hole is not caught when the end button is passed through the bone hole.

The end button for fixing a reconstructed ligament of this embodiment can be made of metal or synthetic resin, but has been developed for a biomaterial which has high strength, is safe and has high affinity for a living body, and is radiographed. It is desirable to use a titanium alloy. The spherical cable crimp can be formed of a metal or a synthetic resin that can play a role similar to a metal because the passed cable is fastened and fixed by the crimp portion 6, but it is also preferable to use a titanium alloy.

In this embodiment, as described above, various cables and wires currently on the market are passed through the groove 4 from the outside of the valley 2 and the spherical cable crimp of the spherical cable crimp is formed in the valley 2. The crimp portion 6 is passed through the hole, the crimp portion 6 is fastened and fixed, the cable is pulled, the spherical cable crimp is placed in the valley portion 2, and the cable can be fixed to the end button for fixing the reconstructed ligament.

FIG. 10 shows an embodiment in which the end button for fixing the reconstructed ligament with a spherical cable crimp is used, and an end button to which one end of a cable connected to the ligament at the other end is fixed. A thread 7 for pulling out the end button is passed through the hole 3 of the end button, and the thread 7 is passed through a bone hole prepared in advance. The cross-sectional diameter of the bone hole must be close to and slightly larger than the width of the end button for later withdrawal and fixation of the end button. When the thread 7 is pulled in a state where the cable is loosened, the spherical cable crimp to which the cable is fixed is settled in the valley portion 2 and the cable attached to the crimp portion does not have strong resistance, and the end button is smoothed. Can be passed through the bone hole.

FIG. 11 shows an embodiment in which the end button for fixing a reconstructed ligament with a spherical cable crimp is used. When all the body parts 1 of the end button have exited the bone holes, the thread 7 is slightly loosened. When the cable is pulled slowly, the ball 5 of the ball-shaped cable crimp produces a drag perpendicular to the groove in contact with the ball 5 and at the same time the crimp 6
However, a force is generated that pushes up the edge of one end of the groove 4 in contact with the groove 4, and the force is used to rotate the end button, and the end button is rotated. When the end button is rotated, the end of the end button close to the bone hole is caught in the bone hole, and when the wire is further pulled with the fulcrum as a fulcrum, the end button is further rotated, and the valley 2 of the end button is drawn into the bone hole. The button is fixed in the bone hole. When the valley 2 fits into the bone hole, both ends of the end button body portion 1 are caught by the edge of the hole of the bone hole, and a firm fixation that is not pulled out even when the cable is pulled strongly is obtained.

Further, FIG. 12 shows an example of use of the end button for fixing the reconstructed ligament with a spherical cable crimp near the skin. Since the spherical cable crimp for fixing the cable fits in the valley portion 2, the crimp is applied to the skin. It does not hit the skin from underneath, and there is no protrusion from the skin.

The above-described structure and operation can provide the same effect even when a thick thread or string is used instead of the cable as a fixing material for the reconstructed ligament.

[0020]

As described above, the ball portion 5 having a diameter larger than the cross-sectional diameter of the crimp portion 6 is attached to the crimp portion 6 through which the cable is fixed, thereby forming a ball-shaped cable crimp. A curved surface having a radius of curvature equal to or slightly larger than the diameter of the ball portion 5 of the ball-shaped cable crimp, which houses the ball-shaped cable crimp, is provided at the center of the elongated flat plate-shaped body portion 1 having the button pullout hole 3. The long axis of the body part 1 having a width larger than the cross-sectional diameter of the crimp part 6 of the spherical cable crimp and narrower than the diameter of the ball part 5 at both slopes and at the center thereof. Is provided with a groove 4 for fixing a spherical cable crimp parallel to
The end button with the cable fixed is easily pulled out of the bone hole. When the end button is pulled out of the bone hole and the button is rotated and fixed, this can be done with a single thread and close to the skin. In this case, the effect is obtained that the reconstructed ligament can be firmly fixed using the cable without protruding the end of the cable subcutaneously.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment in which a cable is fixed to a reconstructed ligament fixing end button and a spherical cable crimp of the present invention.

FIG. 2 is a perspective view of an embodiment of an end button for fixing a ligament for reconstruction according to the present invention;

FIG. 3 is a front plan view of an embodiment of an end button for fixing a reconstructed ligament according to the present invention;

FIG. 4 is an embodiment of an end button for fixing a reconstructed ligament according to the present invention;
FIG. 3 is a sectional view taken along the line II in FIG. 2.

FIG. 5 is a side view of an embodiment of the end button for fixing a reconstructed ligament according to the present invention;

FIG. 6 is a perspective view of an embodiment of the ball cable crimp of the present invention.

FIG. 7 is a front plan view of the embodiment of the spherical cable crimp of the present invention.

FIG. 8 is a cross-sectional view of the embodiment of the ball crimp of the present invention, taken along the roll line of FIG. 6;

FIG. 9 is a right side view of the embodiment of the spherical cable crimp of the present invention.

FIG. 10 is a cross-sectional view illustrating a use state when the embodiment of the present invention is passed through a bone hole.

FIG. 11 is a cross-sectional view illustrating the use of the embodiment of the present invention when the cable is pulled out of the bone hole and the ligament fixation end button is rotated.

FIG. 12 is a sectional view illustrating a state in which the embodiment of the present invention is fixed to a bone hole.

[Explanation of symbols]

 1 Body part 2 Valley part 3 Hole 4 Groove 5 Ball part 6 Crimp part 7 Thread for pulling out end button

Claims (1)

[Claims] 1. A spherical cable crimp is formed by attaching a spherical spherical part (5) having a diameter larger than the cross-sectional diameter of the crimp part (6) to a cylindrical crimp part (6) through which a cable is fixed. In the center of an elongated flat body (1) having a hole (3) for pulling out an end button at one end, a spherical cable crimp is accommodated in the center of the spherical cable crimp, and has the same diameter as the spherical part (5) of the spherical cable crimp. A valley (2) having a curved surface having a slightly large radius of curvature as a bottom is provided, and a crimp portion (6) of a spherical cable crimp is provided on both slopes and the center of the valley (2).
For reconstructing a ligament with a spherical cable crimp provided with an elongated groove (4) that is wider than the cross-sectional diameter of the end button and narrower than the diameter of the sphere (5) and that is parallel to the long axis of the end button. End button.