JP3540158B2 - Reconstruction ligament fixation device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for fixing a ligament for reconstruction using an anchor for suspending a ligament from a bone in ligament reconstruction, and is used, for example, as a fixation on the tibia in anterior cruciate ligament reconstruction in the field of orthopedic surgery.
[0002]
[Prior art]
In this type of orthopedic surgery, as a method of fixing the ligament in the ligament reconstruction operation, for example, as a fixing method of suspending the ligament from the femur, an anchor called an end button as shown in FIG. 1 and a tape or a thread connecting the end button and the ligament , Artificial ligaments and the like are used. This end button has been patented in the United States, but has not been patented in Japan.
[0003]
In the ligament reconstruction method using the end button 1, the bone holes 2 and 2 are opened in the knee, and a ligament 3 formed in a loop shape and passed through the bone holes 2 and 2, 2 and the end button 1 placed outside by a hanging portion 4 such as a tape, a thread, or an artificial ligament. Such fixation is performed mainly on the femur side, and on the tibia side, the ligament reconstruction is performed by fixing the hanging portion 4 to the bone with staples 5 or the like.
[0004]
As shown in FIG. 2, the end button 1 had a structure in which a hole was formed in the board-like material portion.
[0005]
[Problems to be solved by the invention]
The above-described fixing method has a problem that requires a solution as described below.
[0006]
While there was a method for the femur as described above, there was no good method for the tibia. Heretofore, when the staple 5 is used to fix the suspension unit 4, the staple 5 has insufficient compressive fixing force against the bone, and the suspension unit 4 cannot be fixed sufficiently and may come off and become loose. As shown in FIG. 3, a method in which the hanging portion 4 is tied and fixed to the end button 1 outside the bone hole is also possible, but there is a possibility that the hanging portion 4 is loosened at the knot 6.
[0007]
There is a problem that the purpose of the ligament reconstruction may be meaningless because the loosening causes the loosening of the reconstruction ligament.
[0008]
Accordingly, the present invention provides a fixation device for ligament reconstruction that does not loosen or unravel, solving the above-mentioned problems of the prior art.
[0009]
[Means for Solving the Problems]
The basic structure of the ligament suspending force according to the present invention is that when a suspending portion, usually composed of two pieces, passed through a board-like portion is joined, how to make this joint a loose connection and form a loop In this regard, a means is used in which the hanging portions are joined in a loop shape by heat treatment or the like. A method of applying a constant tension to the suspended ligament before joining in a loop is also shown.
[0010]
On the tibia side, the loop of the suspension part does not loosen, so that the reconstruction ligament can be fixed without loosening also on the tibia side.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an anchor for hanging a ligament according to the present invention will be described in detail based on preferred embodiments of the present invention.
[0012]
In the anchor for hanging a ligament of the first embodiment, as shown in FIG. 4, a hanging portion 9 such as a tape, a thread, or an artificial ligament passes through two holes 8, 8 of a disk-shaped portion 7. FIG. 4-a). By applying heat to the overlapping portion 10 by tying or crossing both ends of the hanging portion 9 with or without crossing with the device 11 for applying heat (FIG. 4B), the portion is fused. A loop can be configured (FIG. 4-c).
[0013]
In the anchor for hanging a ligament according to the second embodiment, as shown in FIG. 5, a hanging portion 9 passes through holes 8, 8 of a plate-like material portion 7, and a hole 12 is formed between the holes 8, 8. When the terminal 13 of the apparatus for applying heat is pinched and heat is applied, the terminal 13 is made of tape, thread, artificial ligament, etc. There is a hole 12 between the holes 8, 8 for passing in between.
[0014]
The anchor for suspending the ligament of the third embodiment has the same purpose as the anchor for suspending the ligament of the second embodiment, but as shown in FIG. There is a recess 14 between the holes 8, 8 to pass between the hanging part 9 made of ligaments or the like and the board-like object part 7.
[0015]
The anchor for hanging a ligament according to the fourth embodiment has the same purpose as the anchor for hanging a ligament according to the second embodiment, but has a depression 15 at the center as shown in FIG. 7 (FIG. 7-a). It can be inserted into the bone hole 2 (FIG. 7-b). In the recess 15, the hanging portions 9 coming out of the two holes 8, 8 are tied or crossed or overlapped without being crossed to form a loop (FIG. 7C). At this time, since the connecting portion 16 does not protrude under the skin, it is difficult to induce pain.
[0016]
In the fifth embodiment, as shown in FIG. 8, after passing through two holes 8, 8 of the disk-shaped part 7, the tapes, threads, artificial ligaments and the like coming out of the respective holes 8, 8 are connected, Or, a device capable of pulling a tape, a thread, an artificial ligament, or the like so that a specific tension can be applied to the tape, the thread, the artificial ligament, or the like when the layers are crossed or overlapped without being crossed.
[0017]
The ligament suspending anchor of the sixth embodiment does not fuse the suspending portions 9 such as tapes, threads, artificial ligaments, etc. by applying heat as described in FIG. After tying or crossing the lowering portions 9, overlapping or overlapping without crossing, the overlapping portion 10 is wrapped from the outside 17 (FIG. 9-a), the enclosing portion 18 (FIG. 9-b), An example of a fastener is shown, in which a loop-like part can be formed by making the coupling part 16 by fixing with a penetrator 19 (FIG. 9-c). A fastener, such as a penetrator 19, may have teeth 20 at both ends where the center is collapsible, and the fastener may be folded at the coupling 16 to join the suspension 9 to form a loop. The hanging portion 9 of a tape, a thread, an artificial ligament, or the like may have an uneven portion 21 so that the connecting portion 16 does not shift (FIG. 9D).
[0018]
It should be noted that the present invention is not limited to the above-described embodiment, but can adopt various modifications within the scope of the gist.
[0019]
【The invention's effect】
As is clear from the above description, according to the fixing device for ligament reconstruction of the present invention, the loop is not a loose fixation like the staple shown in FIG. 1 but a loop like the end button shown in FIG. After being made, the knot does not loosen, thus providing a secure, non-loosening fixation of the tibia side, and thus of the ligaments.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a conventional ligament reconstruction method of suspending a ligament from a bone.
FIG. 2 is an explanatory diagram of a conventional end button used for fixing a ligament suspended from a bone.
FIG. 3 is an explanatory view in a case where the tibia side is fixed using an end button.
FIG. 4 is an explanatory view of a ligament suspending anchor according to the first embodiment of the present invention.
FIG. 5 is an explanatory view of a ligament suspending force according to a second embodiment of the present invention.
FIG. 6 is an explanatory view of a ligament suspending anchor according to a third embodiment of the present invention.
FIG. 7 is an explanatory view of a ligament suspending anchor according to a fourth embodiment of the present invention.
FIG. 8 is an explanatory view of a ligament suspending anchor according to a fifth embodiment of the present invention.
FIG. 9 is an explanatory view of a ligament suspending anchor according to a sixth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 End button 2 Bone hole 3 Ligament 4 Hanging part 5 Staple 6 Knot 7 Board-like part 8 Hole 9 Hanging part 10 Stacked part 11 Device for applying heat 12 Hole 13 Terminal 14 Depression 15 Depression 16 Joining part 17 Wrapping thing 18 Wrapping thing 19 Penetration thing 20 Teeth 21 Uneven part

Claims (3)

Anchor is attached to the end of the ligament for reconstruction passed through the bone hole via a hanging portion such as an artificial ligament, and the anchor is arranged on the opening side of the bone hole and fixed to the bone with the hanging portion. Ligament fixation device,
The anchor is formed of a disk-shaped object that is locked to the open end of the bone hole, and at both ends of the disk-shaped object, holes are provided for pulling out the hanging portions of the reconstruction ligaments passed through the bone hole, In the center of the disc-shaped object, a hole for terminal is provided to cross each ligament for reconstruction, and the intersection of the heated ligament for reconstruction is connected via the terminal by heat fusion, and the other end of the hanging part A device for fixing a ligament for reconstruction, characterized in that the side has a loop shape. Anchor is attached to the end of the ligament for reconstruction passed through the bone hole via a hanging portion such as an artificial ligament, and the anchor is arranged on the opening side of the bone hole and fixed to the bone with the hanging portion. Ligament fixation device,
The anchor is formed of a disk-shaped object that is locked to the open end of the bone hole, and at both ends of the disk-shaped object, holes are provided for pulling out the hanging portions of the reconstruction ligaments passed through the bone hole, In the center of the disc-shaped object, a dent for terminal is provided so as to cross each ligament for reconstruction, and the intersection of the ligament for reconstruction heated via the terminal is joined by heat fusion, and the other end of the hanging part The fixation device of the ligament for reconstruction characterized by making a loop. Anchor is attached to the end of the ligament for reconstruction passed through the bone hole via a hanging portion such as an artificial ligament, and the anchor is arranged on the opening side of the bone hole and fixed to the bone with the hanging portion. Ligament fixation device,
The anchor is formed of a disc-shaped object that is engaged with the opening end of the bone hole and a tubular body that is inserted into the bone hole, and the hollow formed in the disc-shaped object is passed through the tubular body from inside the bone hole. A device for fixing a ligament for reconstruction, characterized in that holes are provided to draw out the suspension portions of the ligaments for reconstruction, and the other ends of the suspension portions are connected to form a loop within the depression of the board-like object.
(that's all)

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