KR102210953B1 - A animal bone plate for being implanted into the tibia in cruclate ligament rupture surgery - Google Patents

Abstract

The present invention relates to an animal bone plate that is implanted in the tibia during cruciate ligament adiabatic surgery, and more particularly, by cutting a part of the posterior side of the proximal tibia by the TPLO surgical method during cruciate ligament insulation of small dogs, the tibial plateau angle is 5 degrees. It is a long plate body that is changed internally and externally, and is connected to the upper and lower tibias around the osteotomy site, and connects integrally. An extension surface is formed on the posterior side to increase the contact area with the proximal tibia to provide a bonding force through a wide area, and to the anterior side It relates to an animal bone plate that prevents the expansion surface from being formed so as to prevent obstruction during TTT surgery for additional patella alignment. In particular, by forming a number of notches on the side of the bone plate to partially weaken the structural strength in the width direction, the bone plate can be easily bent according to the inner side curve of the proximal tibia according to the type of small dog, so it can be used universally for various small dogs. It relates to a bone plate for animals that can.

Description

A animal bone plate for being implanted into the tibia in cruclate ligament rupture surgery.

The present invention relates to an animal bone plate that is implanted in the tibia during cruciate ligament adiabatic surgery, and more particularly, a portion of the posterior side of the proximal tibia by a TPLO (Tibial plateau leveling osteotomy; tibial rotational osteotomy) surgical method during cruciate ligament adiabatic of small dogs. It is a long plate body that is connected to the upper and lower tibias and connects integrally to the upper and lower tibias by cutting the tibial plateau angle to about 5 degrees, and by forming an extension surface to the posterior side to increase the contact area with the proximal tibia. The present invention relates to a bone plate for an animal that provides a bonding force through and prevents the anterior side from being obstructed during TTT (Tibial Tuberosity Transposition) surgery for additional patella alignment. In particular, by forming a number of notches on the side of the bone plate to partially weaken the structural strength in the width direction, the bone plate can be easily bent according to the inner side curve of the proximal tibia according to the type of small dog, so it can be used universally for various small dogs. It relates to a bone plate for animals that can.

The cruciate ligament is a ligament that connects between the femur (femur) and the tibia (tibia), and supports the knee to move while stably fixing the position.

Since these cruciate ligaments function to prevent the tibia from being pushed forward, when insulated, the tibia is pushed forward with respect to the femur.

In addition, since the cruciate ligament serves to limit the rotation of the tibia around a vertical axis, when insulated, the tibia may return to the inside, causing patella dislocation.

In addition, since the cruciate ligament prevents excessive rotation in the front of the knee, excessive bending of the femur and tibia may occur when insulated.

In this way, when the cruciate ligament is insulated, severe stress accumulates in the patella joint due to excessive pushing, pulling, or rotation, which causes arthritis, so surgery is required even for small dogs.

The cruciate ligament adiabatic surgery method is a method of rebuilding the ligament by attaching an artificial ligament, or a correction method through osteotomy. As for the osteotomy, a procedure in which the tibial plateau angle is flattened by 5 degrees like a human is mainly used using a TPLO (Tibial plateau leveling osteotomy) surgical method.

In addition, when the cruciate ligament is injured, the patella is dislocated and the patella is deflected to one side rather than on a vertical line, thereby providing discomfort when walking. Therefore, when performing the TPOL, a TTT (Tibial Tuberosity Transposition; tibia rough surface displacement) in which the patella is placed on a vertical line by cutting the rough surface of the tibia to which the patellar ligament is attached and changing its position can be performed together. .

Here, in the case of the TPLO, the bone plate is used to fix the bone plate, but the bone plate used in the TPLO is formed in the longitudinal direction, or the head is extended to both sides to provide support through a large area by expanding the contact area. For this reason, the cutting of the rough surface is disturbed during the TTT procedure by the bone plate head extending to the side.

In addition, in the case of small dogs, since there is no dedicated bone plate, and the bone plate of a large dog is simply reduced in size, there is a problem that adhesion and support are somewhat inferior to the tibia of various types of small dogs.

Korean Patent Registration No. 10-1694411 (registered on Jan. 3, 2017; hereinafter referred to as'priority document 1') proposed a plate for tibial osteotomy. The Prior Literature 1 shortens the operation time by providing the plate to have a curved surface corresponding to the tibia since the plate is formed in advance at a predetermined angle. Although the plate of Prior Literature 1 is not specified for use in humans or large dogs, it is difficult to use for other purposes because it is tailored to the tibia.

Korean Patent Registration No. 10-1298887 (registered on August 14, 2013; hereinafter referred to as'priority document 2') proposed a treatment for anterior cruciate ligament insulation by crank osteotomy on the tibia rough surface. Although the location of use is different in Prior Document 2, a bone plate for supporting the cut bone is used. However, the bone plate of Prior Literature 2 has a disadvantage in that it does not provide support through a wide surface in the form of a rod, and does not facilitate bending deformation with respect to the curved surface of the tibia.

That is, Prior Documents 1 and 2 are about bone plates used for the human body, and are difficult to use for tibia support of small dogs because a customized bend is formed to fit the human bone or is provided as a simple rod.

Therefore, it is necessary to study a bone plate that can be deformed to fit the tibia flexion of small dogs by easily generating bending so that it can be used for small dogs with slightly different tibia shapes depending on various breeds.

Korean Patent Registration No. 10-1694411 (registered on Jan. 3, 2017): Tibia osteotomy plate Korean Patent Registration No. 10-1298887 (registered on August 14, 2013): Treatment of anterior cruciate ligament insulation by crank osteotomy on the tibia rough surface

Animal bone plate implanted in the tibia of the present invention for solving the problems of the prior art as described above,

It provides support through a wide surface on the inner side of the proximal tibia, but does not create a protrusion on the anterior side, so that the rough surface of the tibia can be cut, and a plurality of notches are formed on the side to bend the outer surface of the proximal tibia by external force. It is intended to provide a bone plate for animals that can be formed.

Animal bone plate implanted in the tibia of the present invention for solving the above problems,

In the bone plate for animals to be implanted in the tibia of a small dog, the edge portion is implanted in contact with the proximal portion of the tibia in a triangular shape protruding posteriorly, and a head having first to third coupling holes triangularly disposed on the inner side; Consisting of; a body portion formed in a predetermined width from the lower portion of the head portion to the lower portion thereof, and having a first long hole, a fourth coupling hole, and a second long hole arranged in series from the top to the bottom connected to the head portion, and The head has a first notch on the front side, a second notch and a third notch on the upper and lower sides on the rear side, and a fourth notch and a fifth notch on both sides of the connecting portion connecting the head and the body, , The body is configured to form a sixth notch and a seventh notch on both sides between the first long hole and the fourth coupling hole, and formed to form an eighth notch on the rear side between the fourth coupling hole and the second long hole. One of the notches is to be bent between the remaining two notches, and the body portion is bent in the seventh notch and the eighth notch around the sixth notch.

The notch, the overall width reduction to form a narrow width of opposite sides, and a slope width reduction gradually forming a width from the lower surface or the middle to the upper surface in contact with the bone among the thicknesses; Either or both are formed to partially lower the structural strength.

At this time, the notch may be formed to have an upward inclined surface at an angle of 30 to 50 degrees from the horizontal plane.

In addition, a first fixing hole is formed in the head part between the rear lower side and the coupling hole, and a second fixing hole is formed in the front region between the fourth coupling hole and the second long hole in the body part, so that the K-wire is It may be inserted and temporarily fixed, or an elastic band wire for supporting the rough surface of the tibia during patella alignment surgery may be fixed.

The bone plate for animals implanted in the tibia of the present invention by the solution means,

After cutting a part of the proximal part of the tibia, it is rearranged so that the angle of the tibial plateau is around 5 degrees, and then it is combined to achieve fixation and support. The head of the bone plate protrudes only to the posterior side and is combined with the proximal tibia through a large area to increase support, and does not protrude to the anterior side, so that the tibia rough surface displacement surgery for alignment of the patella can be performed.

In addition, since the angle of the bone plate can be adjusted by a plurality of notches formed on the sides of the head and the body, the bone plate can be brought into close contact with the outer surface of the tibia so as to be coupled.

In particular, three notches formed on the head and body are arranged in a pair to allow multi-stage bending based on one notch, making it possible to provide a useful device that can improve adhesion in response to various tibial surface angles. .

1 is a plan view showing an animal bone plate implanted in a tibia according to a preferred embodiment of the present invention.
Figure 2 is a state diagram showing a bone plate for animals implanted in the tibia of a small dog.
3A and 3B are cross-sectional views of a notch according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may be modified in various ways and may have various forms. Specific embodiments are illustrated in the drawings, and the present invention will be described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, it is to be understood as including all changes, equivalents, or substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged or reduced than in actuality for clarity of the present invention.

The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise", "include" or "have" are intended to designate the presence of features, numbers, steps, actions, elements, or a combination thereof described in the specification. It is to be understood that the presence or addition of other features, numbers, steps, actions, components, or combinations thereof, does not preclude in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms that are commonly used and defined in the dictionary should be interpreted as having a meaning consistent with the meaning of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. .

In addition, in the present invention, "distal" and "proximal" mean "Distal" on the far side from the heart, and proximal on the near side.

1 is a plan view showing an animal bone plate implanted in the tibia according to a preferred embodiment of the present invention, and FIG. 2 is a mounting state diagram showing an animal bone plate implanted in the tibia of a small dog.

As shown, the bone plate 10 for animals of the present invention is implanted inside the proximal portion of the tibia 80 of a small dog.

The animal bone plate 10 is composed of a head 20 having a triangular shape, and a body 30 extending long while having a predetermined width from one corner of the head to the bottom.

The head portion 20 is arranged such that one side is positioned on the front side and the opposite edge is positioned on the rear side. The first to third coupling holes 41, 42 and 43 are arranged in a triangular shape inside the head.

The body part 30 is formed to have a predetermined width from the lower part of the head to the downward direction, and the first long hole 51 and the fourth coupling hole 44 and the second long hole 51 and the fourth coupling hole 44 and the second part from the upper to the lower direction connected to the head part are formed inside. Long holes 52 are arranged in series.

When the screw is coupled to the tibia 80 through the coupling hole 40, the screw cannot be moved within the coupling hole, so the tibia 80 and the animal bone plate 10 are integrally coupled. In particular, the three-angled mounting holes 41, 42, 43 formed on the head 20 can be screwed by selecting two according to the position of the cut surface, so that the bone plate rotates only by screwing through the head 20 Can be suppressed.

In addition, if the screw is coupled to the tibia 80 through the long hole 50, the screw can move in the long axis direction in the long hole 50 before the screw is completely tightened, so that the tibia can be moved in the axial direction even when the screw is semi-coupled. The position can be adjusted to closely adhere to the other separated tibia. After the position adjustment, the bone plate and the cut tibia may be integrally coupled by further rotating and fixing the screw or by screwing through the coupling hole 40. The long hole 50 is composed of two in the body part 30, which is the first long hole 51 or the second long hole 52 according to the fracture position when the head 20 is fixed to the joint portion of the upper tibia. It was made to use selectively.

In addition, by forming a notch 60 partially weakened structural strength in the bone plate 10 for an animal of the present invention, it can be easily bent by an external force. When the notch 60 is bent by applying a load to the virtual line between the opposite notches, the bone plate 10 is bent along the virtual line, but if the bending angle is adjusted to be as similar as possible to correspond to the outer surface of the tibia, various curved surfaces The bone plate can be adhered to the tibia with

The notches 60, 61 to 68 are to reduce the overall width to form narrow widths of opposite sides, and to reduce the inclined width to gradually narrow the width from the lower surface in contact with the bone or from the middle to the upper surface among the thicknesses; Any one or both of them may be provided in an applied form.

3A shows that the overall width of the bone plate 10 according to the present invention is reduced and the inclined width is reduced at the same time to lower the structural strength of the corresponding part, so that bending occurs at a set position (virtual line between the notches) during external force action, so that the angle of the bone plate can be adjusted. Can be done. In addition, as shown in FIG. 3B, the slope width is reduced from the middle portion of the thickness, thereby increasing structural strength rather than reducing the overall width, and lowering the structural strength than the portion where the notch is not formed, so that bending can be easily generated.

The inclined surface formed in the notches 60, 61-68 is formed to have an upward inclined surface at an angle of 30-50 degrees from the horizontal plane, and the width is formed narrowly in the upper direction from the bottom surface in contact with the bone, and the notch is formed part or notch By weakening the structural strength of the parts facing each other, it is possible to bend more easily than other parts when external force is applied. If it is formed below 30 degrees, the upper surface is excessively cut and the structural strength is lowered, so that it is easily bent without applying an external force for the purpose of bending.If it is formed at an angle of 50 degrees or more, the strength between the two opposite notches increases and both sides It is preferable to form the notch at an angle within the above range because it is difficult to cause bending around the virtual line connecting the notch.

In addition, when the notch 60 is formed to have an inclined surface, the apex portion of the inclined surface that has entered the maximum inward from the upper side may be formed in a specific direction, so that bending due to bending at a desired position when an external force acts. For example, if two notches are formed to face each other, and the vertices formed by each notch are placed on the same virtual line, the virtual line part has the weakest structure, so when an external force is applied, the external force is concentrated in the corresponding virtual line, and bending occurs without distortion.

In the bone plate 10 for animals according to a preferred embodiment of the present invention, two notches are provided on opposite sides of each other, and three notches are provided in a pair.

The head 20 is formed with a pair of first to third notches 61 to 63, one on each side. The first to third notches 61 to 63 connect both of the other two notches or only one of the notches around one of the notches so that bending occurs in multiple stages at the head or only one bending occurs. It is possible to increase the adhesion of the bone plate in response to various bends on the outer surface of the proximal tibia. In the drawing, a first notch 61 is formed on the front side of the head 20, and a second notch 62 and a third notch 63 are formed on the upper and lower sides of the rear side.

In addition, a fourth notch 64 and a fifth notch 65 are formed on both sides of the connection portion between the head 20 and the body 30. The fourth notch and the fifth notch are formed by applying both the overall width reduction and the inclined width reduction in the shape of the notch, so that it is easily bent when an external force is applied, so that the head part from the body part can be bent outward.

In addition, in the body part 30, sixth notches 66 and seventh notches 67 are formed on both sides between the first long hole 51 and the fourth coupling hole 44, and the fourth coupling hole 44 ) And the rear side between the second long hole 52 may be configured to form an eighth notch 68. This can be achieved by bending any one of the 7th notch 67 and the 8th notch 68 around the 6th notch 66 or bending both the 7th notch 67 and the 8th notch 68 if necessary. The bending can be achieved. That is, the bending angle of the outer surface of the tibia that the body part 30 contacts with is changed around the virtual line connecting the sixth notch 66 and the seventh notch 67, or the sixth notch 66 and When the bending angles on both sides of the imaginary line connecting the eighth notches 68 change, bending is made around the corresponding two notches, so that the bone plate is in close contact with the outer surface of the tibia so as to be mounted.

On the other hand, in the bone plate 10 for animals of the present invention, a first fixing hole 71 and a second fixing hole 72, which are fixing holes 70, respectively, are formed in the head 20 and the body 30 to be combined. Prior to screwing into the ball 40, the position of the bone plate relative to the tibia may be temporarily fixed.

The first fixing hole 71 and the second fixing hole 72 are K-wire or elastic band wire inserted and connected, and are 20 to 30% of the diameter of the coupling hole. It is formed in a small diameter and can minimize tibia damage when connected to the tibia.

The first fixing hole 71 is formed between the lower side of the rear side of the head 20 and the coupling hole, and is formed in the center of the three coupling holes other than the above position, or is located close to the other side. It may be formed in a position other than the virtual line where bending may occur.

In addition, the second fixing hole 72 is formed in the front side area between the fourth coupling hole 44 and the second long hole 52 in the body part 30. The second fixing hole 72 is the same as the first fixing hole, and is used for temporary fixing of the bone plate by inserting a K-wire, or an elastic band wire that fixes the rough surface 81 of the tibia cut for alignment of the patella in TTT procedure. It is used for bonding and supporting purposes.

At this time, the body portion 30 of the bone plate 10 is bent around the sixth notch 66 and the eighth notch 68 so that the portion in which the second fixing hole 72 is formed is lifted upward. Thus, it is possible to facilitate the coupling or mounting of the elastic band wire.

Such an animal bone plate 10 has a curved lower surface in contact with the tibia so as to correspond to the standard tibia size and shape among various small breeds of 8Kg or less, and additionally adjusts the angle by a notch to maximize the tibia. It can be attached closely. This is to sufficiently perform the supporting role while minimizing the feeling of foreign body by mounting the bone plate.

10: bone plate for animals
20: head
30: body part
40: coupling hole
41~44: 1st~4th coupling hole
50: long hole
51: first long hole 52: second long hole
60: notch
61~68: 1st~8th notch
70: fixed hole
71: first fixed hole 72: second fixed hole
80: tibia
81: rough side

Claims (4)

In the animal bone plate implanted in the tibia of a small dog,
It is implanted in contact with the side of the proximal tibia, but the edge is formed in a triangular shape protruding posteriorly so that the rough surface of the tibia is exposed to the anterior side, and the first to third coupling holes 41, 42, 43 are triangularly arranged on the inside. A head 20;
The first long hole 51, the fourth coupling hole 44, and the second long hole 52 are serially formed from the lower part of the head to the lower direction, and from the upper to the lower direction connected to the head part. Consisting of; the arranged body portion 30;
The head 20 has a first notch 61 on the front side, and a second notch 62 and a third notch 63 on the upper and lower sides on the rear side, and between the remaining two notches around any one notch. The warpage is done on and;
A fourth notch 64 and a fifth notch 65 are formed on both sides of the connection portion connecting the head 20 and the body 30;
In the body portion 30, sixth notches 66 and seventh notches 67 are formed on both sides between the first long hole 51 and the fourth coupling hole 44, and the fourth coupling hole 44 ) And the rear side between the second long hole 52 is configured to form an eighth notch 68 so that the seventh notch and the eighth notch bend around the sixth notch;
A first fixing hole 71 is formed between the rear lower side and the coupling hole in the head part 20, and the front side area between the fourth coupling hole 44 and the second long hole 52 in the body part A bone plate for animals, characterized in that the second fixing hole 72 is formed in the bone plate for an animal, characterized in that the elastic band wire for supporting the rough surface of the tibia during patella alignment surgery or temporarily fixed by insertion of K-wire is fixed. The method of claim 1,
The notches 61 to 68 are, the overall width of which the widths of opposite sides are narrowed, and the width of the inclined width is gradually narrowed from the lower surface in contact with the bone or from the middle to the upper surface among the thicknesses; Any one or both of them are formed to partially lower the structural strength. The method of claim 2,
The notch (61 to 68), animal bone plate, characterized in that formed to have an upward inclined surface at an angle of 30 to 50 degrees from the horizontal plane. delete

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