TWM459841U - Bone fixation structure - Google Patents

Description

Bone fixation structure

The present invention is a bone fixation structure, especially a bone plate with a Y-shaped structure, which is arranged on the posterior side of the distal end of the humerus to fix the bone fixation structure of the injured elbow joint.

Elbow joint fracture is not a rare form of injury. For example, when you fall out with your arms extended, the instantaneous acceleration and impact of your hands may cause the bones around the elbow to break and smash. Among them, the damaged part is usually the distal end of the humerus, whether it is the supracondylar fracture of the humerus, the condylar fracture of the humerus, the epiddylar fracture of the humerus. , may cause nerve damage or flexor function damage, or damage the growth plate and joint surface, can not be handled inadvertently.

In its treatment, the injury is fixed through the bone plate and the nail, which is the most common treatment for the joint. However, the traditional bone plate is not easy to be shaped, and there is no way to conform to the shape of each joint bone, so that it cannot be properly attached to the outside of the joint bone, so that new bones grown by the conventional bone plate may be generated. Skewed or deformed, unable to conform to the original bone shape Give birth to a variety of sequelae.

In the case of a fracture of the posterior aspect of the distal radius, a two-piece bone plate has been developed for fixation in the prior market; here, the term "distal" refers to the distal end of the bone away from the body, and "Side" refers to the back side of the bone facing the body. In the two-piece combination of bone plates, the distal ends of the distal humerus are respectively fixed to the left and right halves on the posterior side, that is, on the posterior side of the distal end of the humerus, and the upper two bone plates are fixed with the bone nails. However, this type of fixation requires a large amount of bone nails and a large fixed area. In addition to the high cost of materials, the injured person feels discomfort due to the presence of a large number of bone nails.

In addition, the Republic of China Patent Publication No. M411219 has revealed a posterior humerus plate group consisting of a bone plate and a plurality of bone nails, wherein the bone plate is a Y-shaped long plate body. That is, it extends in three directions in a Y shape. This structure is similar to the integration of the two-piece set of bone plates. Although the use of the material of the nail and the bone plate is reduced, it is only fixed on one side of the posterior side of the distal end of the humerus. The damage deep in the joint is still at a loss.

Because the distal radius of the humerus is part of the Henge Joint, the tibia and the tibia form the elbow joint. However, the tibia is here a middle sag and a bulging skeletal structure on both sides. The existing bone plate still cannot be surely The upper iliac crest and the upper iliac crest are fixed on both sides of the bulge, so the medical staff still needs to propose a good bone plate structure for the treatment of the deep joint of the joint.

The main purpose of the present invention is to provide a bone fixation structure for the posterior side of the distal end of the humerus, which is designed to have a flipped structure so that the bone plate can reliably contact the inner upper jaw of the humerus and the outer upper jaw, that is, The two sides of the tibia cover the ends of the axle of the talus at the distal end of the humerus, which greatly enhances the fixation ability of the bone plate to the elbow joint.

The secondary purpose of this creation is to provide a bone-fixing structure that is a Y-shaped structure that avoids the olecranon nest where the cartilage is located, so that it does not affect the mobility of the injured elbow after installation.

Another object of the present invention is to provide a bone fixation structure in the form of a single bone plate while locking the ends of the axle of the tail of the distal end of the distal end of the humerus instead of being fixed by two bone plates. The number of bone nails required is greatly reduced, and the discomfort of the injured person is also alleviated.

In order to achieve the above object, the present invention discloses a bone fixing structure having a main body including: a first fixing portion which is linear; and a second fixing portion and the first fixing portion Connected, which is branched and forms a Y-shaped structure with the first fixing portion, and includes a first branch and a second branch, the first branch and the second branch to the first fixing portion One of them extends below the direction of extension. In this way, the medical staff can use the structure of the bone plate on the posterior side of the distal end of the humerus to fix the fracture of the elbow joint of the injured person, thereby obtaining an excellent fixation effect, improving the speed of fracture healing, and reducing the sequelae. produce.

1‧‧‧ Subject

11‧‧‧First Fixed Department

12‧‧‧Second fixed department

121‧‧‧First branch

1210‧‧‧ curved surface

122‧‧‧Second branch

1220‧‧‧ Missing slot

122A‧‧‧ first point

122B‧‧‧second point

13‧‧‧Perforation

2‧‧‧ bone nails

21‧‧‧ crown

22‧‧‧nails

3‧‧‧Extension direction

θ ₁ ‧‧‧first angle

θ ₂ ‧‧‧second angle

8‧‧‧The posterior side of the distal radius

80‧‧‧Bone

81‧‧‧Eag

82‧‧‧ 外上髁

83‧‧‧上上髁

The first picture: it is a top view of the structure of the creation; and the second picture: it is a front view of the structure of the creation.

For a better understanding and understanding of the features of the creation and the efficacies achieved, please refer to the preferred examples and detailed explanations as follows: First, please refer to the first figure, which is a structural analysis of the present creation. The above view comprises a main body 1, a first fixing portion 11, a second fixing portion 12, and a first branch 121. And a second branch 122 and other location structures.

In terms of the mutual connection relationship, the main body 1 itself can be structurally composed of the first fixing portion 11 and the second fixing portion 12, and the second fixing portion 12 is further extended to the first branch 121. And a second branch 122.

In the present invention, the main body 1 is disposed on the surface of the posterior side 8 of the distal end of the humerus, and is a bone plate unit which is prepared by a solid, light and biocompatible material to conform to the shape of the surface of the bone surface, and then through the operation. The first fixed portion 11 of the main body 1 is linear, and is disposed and attached to the bone body 80 of the tibia for use with the bone 80 of the tibia. fixed. The second fixing portion 12 is connected to the first fixing portion 11, and the two are integrally formed integrally, and are distinguished only by the difference in outer shape.

Among the second fixing portions 12, the first branch 121 and the second branch 122 extend in a branched manner, so that the first fixing portion 11 and the second fixing portion 12 are combined to form a Y-shaped structure. This branched structure is designed to avoid The olecranon fossa 81 on the posterior side of the distal radius 80, the concave olecranon 81 is the location of the cartilage, so the artificial bone plate must be designed to avoid this. If the second fixing portion 12 in the present creation is not in the form of a branched structure, the bone nail is not suitable for fixing here, and the function of the elbow joint extension or flexion of the injured person will be lost after the installation. .

In addition to the structure in which the second fixing portion 12 is branched and combined with the first fixing portion 11 to form a Y-shape, the present invention is designed such that the extension of the first branch 121 and the second branch 122 itself is designed, that is, Both of them flip toward the lower side of the extension direction 3 of the first fixing portion 11, and thus touch the two sides of the posterior side 8 of the distal end of the humerus, that is, the lateral epicondyle of the tibia and the medial epicondyle.

The first branch 121 in the present creation is extended from the side extending in the direction 3 of the first fixing portion 11, please refer to the second figure, and observe it at an angle of right view (this figure separates the creation and the tibia for observation) It cooperates with the appearance structure of the tibia itself, and also flips a first angle θ ₁ to one side of the humerus, and is located on one side of the posterior side of the posterior distal end of the humerus, and is attached to the upper palate 82 outside the tibia. Here, due to the fracture of the human body here, usually a complex fracture, resulting in broken bones and cracks in the axle of the trochlea, but the bone plate can not interfere with the olecranon, through the first branch The flipping of 121 extends to the axle, that is, the side of the trolley that allows the bone plate to reach the outer upper jaw 82 on the side of the posterior aspect of the humerus, which is an ideal fixation method to solve the complicated fracture problem of the elbow closure.

In the detailed structure of the first branch 121, the outer branch system 82 has a relatively gentle arc surface structure, so the first branch 121 is also designed to have a curved surface 1210, which is attached to the gentle slope. The outer upper jaw 82 is then flipped over a large angle to make a corresponding change along the surface of the outer upper jaw 82 in a vertical direction at a first angle θ ₁ greater than 60°.

The second branch 122 extends toward the other side of the extending direction 3 of the first fixing portion 11, and changes in accordance with the appearance structure of the tibia itself. Referring again to the second figure, the second branch 122 is flipped to the other side of the tibia for a second angle θ ₂ , and is located on the other side of the posterior side 8 of the distal end of the humerus, which fits to the side of the pulley of the upper jaw 83 of the tibia. The system is designed to echo the first branch 121.

Herein, the second fixing portion 12 in the present invention extends to both sides of the posterior side 8 of the distal end of the humerus in a branched manner, and is attached to the inner upper jaw 83 and the outer upper jaw 82 by inversion so that the humeral pulley is Both ends of the axle can be completely covered by the creation, achieving the range and effect that the bone plate cannot be fixed in the past.

Since the structure of the upper iliac crest 83 is more complicated than that of the outer cymbal 82, there is a change in curvature. Therefore, referring to the first figure and the second figure together, the second branch 122 in the present creation further includes a first The curved point 122A and the second curved point 122B maintain the second branch 122 in a state of being reversed by the second angle θ ₂ greater than 40°, and remain consistent with the change in the curvature of the inner upper jaw 83, which can be substantially attached. Combined with the upper jaw 83 of the tibia, it strengthens its fixation.

In actual operation, this creation also has a special design to facilitate the installation of such a bone plate structure by medical personnel. Referring to the first figure again, the plurality of defects are respectively set on the two sides of the second branch 122 of the second fixing portion 12. Slot 1220, which is a calibrated adjustment knob. When the medical staff installs the original creation, the first fixing portion 11 and the first branch 121 of the second fixing portion 12 are simultaneously attached and fixed to the injured person's tibia, and then the tool is used to move through the notch 1220. The second branch 122 adjusts the angle of the second branch 122 such that the second branch 122 can conform to the structural appearance of the injured tibia.

For the fixation of the body 1 and the tibia, please refer to the simple illustration of the second figure. The present invention uses the nail 2 to lock the body 1. Therefore, a plurality of perforations 13 are opened on the main body 1 to enable the nail 2 to be The body 1 is locked over the tibia through these perforations 13. Wherein, under the inversion angle of the two branches of the first branch 121 and the second branch 122, the bone nail 2 is inserted into the tibial block at the time of fixation without penetrating the cartilage on the trolley (not Shown in the picture). In addition, the diameters of the through holes 13 created on the first fixing portion 11 are larger than the diameters of the through holes 13 on the second fixing portion 12, which are adjusted in accordance with the locking space.

In addition, the surface of the nail rod of the bone nail 2 used in the present invention has a thread, and the angle between the crown portion 21 and the nail rod 22 can be appropriately adjusted to improve the degree of fixation of the bone plate, but the creation is not limited to use. This kind of bone nail 2.

In summary, the bone fixation structure of the present invention improves the contact between the two ends of the Y-shaped structure by flipping the sacral iliac crest and the external iliac crest. The two sides cover the axle of the distal end of the humerus, and also avoid the olecranon nest where the cartilage is located, so that it does not affect the mobility of the injured elbow after installation.

In addition, this creation not only has a significant improvement in the fixation effect, but also can solve the various aspects of the complex fracture here, and the fixation is completed under the use of a single bone plate, which greatly reduces the required bone. The number of nails and the complexity of the actual installation also reduce the discomfort of the injured, so both in terms of effectiveness and cost, this creation undoubtedly provides a bone-fixing structure of economic and practical value.

However, the above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the variations, modifications, and modifications of the shapes, structures, features, and spirits described in the scope of the patent application. , should be included in the scope of the patent application of this creation.

1‧‧‧ Subject

11‧‧‧First Fixed Department

12‧‧‧Second fixed department

121‧‧‧First branch

1210‧‧‧ curved surface

122‧‧‧Second branch

1220‧‧‧ Missing slot

122A‧‧‧ first point

122B‧‧‧second point

13‧‧‧Perforation

3‧‧‧Extension direction

8‧‧‧The posterior side of the distal radius

80‧‧‧Bone

81‧‧‧Eag

Claims (10)

A bone fixation structure having a main body, comprising: a first fixing portion which is linear; and a second fixing portion connected to the first fixing portion, which is branched and The first fixing portion constitutes a Y-shaped structure, and includes a first branch and a second branch, and the first branch and the second branch are turned downward in a direction in which one of the first fixing portions extends. The bone fixation structure according to claim 1, wherein the main system is disposed on a surface of the posterior side of the distal end of the humerus, and the first branch is turned over to a side of the tibia at a first angle, and is attached to the tibia. In the outer upper jaw, the second branch is turned over to the other side of the tibia to a second angle, and is attached to the upper jaw of the tibia. The bone fixation structure of claim 2, wherein the first branch further comprises a curved surface, such that the first branch fits over the upper jaw of the tibia. The bone fixation structure of claim 2, wherein the second branch further comprises a first curvature point and a second curvature point, and the second branch is attached to the upper jaw of the tibia. The bone fixation structure of claim 1, wherein the body further comprises a plurality of perforations. The bone fixation structure according to claim 5, further comprising a plurality of bone nails, the bone nails penetrating the perforations. The bone fixing structure according to claim 5, wherein the diameter of the perforations on the first fixing portion is larger than the perforations on the second fixing portion The diameter. The bone fixing structure according to claim 1, wherein the two sides of the second branch respectively have a plurality of missing slots. The bone fixation structure of claim 2, wherein the first angle is greater than 60°. The bone fixation structure of claim 2, wherein the second angle is greater than 40°.