TWM606671U - Bone plate with slotted screw hole - Google Patents

Abstract

The present patents disclose a seminal improvement to a bone plate with slotted screw hole, which could adjust the locked position of the bone screw according to the adaptation by the long slot-shaped screw holes on the bone plate, the structure comprising: a bone plate body, used for depositing on the location of fracture; at least two slotted screw holes with a long slotted structure are located on the bone plate body, wherein the surface of the slotted screw hole exists a curved structure, allowing the bone screw adjust the locking angle and position along the slotted screw hole during the process of driving the bone screw into the bone.

Description

Bone plate with slotted screw hole

This creation relates to a bone plate with slotted screw holes. More specifically, it is a kind of bone plate with long slot-shaped screw holes, so that the surgeon can treat various fractures of different shapes according to It is necessary to adjust the position of the bone plate conveniently.

There are a total of 206 adult bones, which are used to support the body, protect organs, and cooperate with the muscular system for exercise. According to different functions, they can be divided into four parts: skull, trunk, upper limb, and lower limb. The skull protects the soft tissues in the brain, the trunk bones are used to protect the organs and support the weight of the human body. The upper and lower limb bones are located in the extremities. The length of the bones is greater than the width, such as humerus, radius, femur, tibia, etc. Combined with the articular surface of adjacent bones to form a movable joint for a wide range of activities

Among them, the bones of various parts of the human body have different shapes and complex structures. If they are subjected to strong violence, whether the cause of the violence is indirect violence (away from the affected area) or direct violence (close to the affected area), or bone disease, When a part of the bone needs to be removed by osteotomy, or when the affected part of the fracture is treated, bone plates and bone screws are used to fix the bone, which are tools that are often used in the process of treatment. The traditional bone plate system is particularly suitable for promoting fracture healing. The bone screw is locked into the bone by the thread previously set on the bone plate to compress, strengthen and tighten the affected part together so that the bone can be fixed against the bone plate to achieve the purpose of treatment. However, due to the indications of bones and the complex types and appearances of fractures, in terms of fractures, the fracture cut surface, fracture angle, and even the stress that can be withstood throughout the fracture are different for various types of fractures. During the process, the bone plate must be provided with keyholes in different positions, so that the bone screw can be locked in according to different fracture morphologies, and suitable locking positions can be selected.

However, as mentioned above, because the bones of various parts of the human body have different shapes and complex structures, In addition, the indications of the fracture, the fracture surface, and the fracture angle are different. When the keyholes on the bone plate are all fixed positions, the fixed position that the bone plate can be adjusted during treatment, or fixation The angle is limited, and the versatility of a single-size bone plate will inevitably not be able to meet such complex indications. Therefore, in order to achieve the purpose of being able to treat a variety of different indications, manufacturers of bone plates and bone screws must prepare a variety of different specifications in advance. In addition to the difficulty in inventory management, the bone plates with keyholes at different positions will be used for backup. The single production cost of the less used bone plate specifications will also have the difficulty of higher production costs due to the smaller economic scale.

Therefore, in the current market, there is still a need to improve the keyhole structure of the existing bone plate. In addition to allowing the bone plate to have a greater degree of freedom to adjust the locking position of the bone plate when fitting the bone plate to the affected area, it must also be ensured After the bone and the bone plate are locked, the strength of the locking will meet the application requirements, and there will be no loosening after the fixation is completed, so that the patient must undergo the operation again, causing the doubt of secondary injury.

Therefore, in view of the above, this creation proposes a bone plate with slotted screw holes. Its structure includes: a bone plate body for attaching and fixing the bones of the affected part; two or more slotted screw holes located in the bone plate On the main body, there is a long groove-shaped structure, and there is an included angle β between the grooved screw holes; wherein, the surfaces of the two grooved screw holes can have an α ₁ and α _{2 respectively} . The curvature enables the bone screw to move along the surface of the grooved screw hole during the process of driving into the bone, so that the bone plate with the grooved screw hole can adjust its locking position according to different indications.

According to the content of this creation, the range of the lengths L ₁ and L ₂ of the slotted screw holes is 0.1-10 centimeters (cm).

According to the content of this creation, the end of the slotted screw hole has a round screw hole, and the surface of the round screw hole has a structure with a curvature of α ₃ , so that the surgeon can further improve Additional bone screws can be used to fix or fine-tune the locking position on the bones of the affected part to improve the strength of the locking and increase the accuracy of the locking position.

According to an embodiment of this creation, grooved screw holes and round screw holes with curvatures α ₁ , α ₂ , and α ₃ can enable the bone screw to be locked obliquely at an oblique angle perpendicular to the direction of the bone plate body In the bones.

According to an embodiment of the present invention, the surface of the grooved screw hole and the circular screw hole can be provided with a threaded structure according to the needs of the application to increase the strength of the locking between the bone screw and the bone plate body and avoid The bone plate with slotted screw holes causes the bone plate to fall off during the patient's postoperative healing process, so that the patient must undergo the treatment operation again, causing second-degree injuries.

According to the content of this creation, the number of the aforementioned slotted screw holes can be N, where N is a natural number greater than 2.

According to the content of this creation, the above-mentioned number of N slotted screw holes can be linearly or non-linearly combined into a cross shape, a C shape, a rice shape, a ㄑ shape, an X shape, and a Γ shape.

According to the content of this creation, it can be applied to the types of fractures, including transverse fractures (Transverse), sphenoid transverse fractures (Transverse with Butterfly), spiral fractures (Spiral), oblique fractures (Oblique), and comminuted fractures (Comminuted) , Segmental fractures (Segmental), articular fractures (Articular), metaphyseal fractures (Metaphyseal), or various types of osteotomy surgery (Osteotomy Surgery) and other indications, are not limited to the above.

The above description is used to illustrate the purpose of this creation, technical means and its achievable effects. Those who are familiar with this technology in the relevant fields can get a clearer understanding of this invention through the demonstration of the following examples and accompanying schematic descriptions and the scope of patent applications. creation.

100: Bone plate with slotted screw hole

101: Slotted screw hole

105: round screw hole

107: Bone Plate Body

α ₁ , α ₂ , α ₃ : curvature

L ₁ , L ₂ : length

β: included angle

201: Bone Screw

400: bone

501: cross type

503: C font

505: m font

507: ㄑ font

509: X font

511: Γ font

Figure 1 shows a perspective view of a bone plate with slotted screw holes.

Fig. 2 illustrates a perspective view of the application situation of the grooved screw hole and the bone screw.

Figure 3 illustrates the top view of the application situation of the slotted screw hole and the bone screw.

Figure 4 illustrates a perspective view of a bone plate with slotted screw holes being assembled on a bone.

Fig. 5A shows an application scenario where the slotted screw hole is configured as a cross in an embodiment of the invention.

Figure 5B shows an application scenario where the slot screw hole is configured in a C shape in an embodiment of the present creation.

Fig. 5C shows an application scenario in which the slotted screw hole is configured in a P-shape in an embodiment of the invention.

Fig. 5D shows an application scenario in which the slotted screw hole is configured in a U shape in an embodiment of the present creation.

Figure 5E shows an application scenario where the slotted screw hole is configured in an X shape in an embodiment of the present creation.

Fig. 5F shows an application scenario in which the slot screw hole is configured in a Γ shape in an embodiment of the present creation.

This creation will be described in detail with preferred embodiments and viewpoints. The following description provides specific implementation details of this creation, so that readers can thoroughly understand the implementation of these embodiments. However, those skilled in the field must understand that this creation can also be implemented without these details. In addition, this creation can also be applied and implemented by other specific embodiments. The details described in this specification can also be applied based on different needs, and various modifications or changes can be made without departing from the spirit of this creation. . This creation will be described with preferred embodiments and viewpoints. Such descriptions are used to explain the structure of this creation, and are only used to illustrate rather than limit the scope of patent application for this creation. The terms used in the following description will be interpreted in the broadest reasonable way, even if they are used in conjunction with the detailed description of a specific embodiment of this creation.

The specific first purpose of this creation is to try to solve the problem of the lack of keyholes for adjusting the locking position in the conventional single-size bone plate, so that the surgeon cannot elastically adjust according to different bone indications when performing bone treatment. For the fixed position of the bone plate, a variety of different keyhole specifications must be prepared in advance, or special specifications of the bone plate must be prepared in advance. In addition to the difficulty in inventory management, the single production cost of the less used bone plate specifications will also be economical. The small scale will inevitably inevitably inevitably avoid the difficulty of higher production costs. In addition, the second purpose of this creation is that when the position of the bone screw on the keyhole is adjustable, it means that in addition to adjusting the fixed position of the bone plate on the bone according to the adaptive condition, it can also be locked after being fixed. There is a balance between the strength of the solid and the stress on the bone plate, that is, after the bone plate is implanted in the patient’s body, the bone plate can be selectively displaced or twisted to a certain extent according to the patient’s movement status. Avoid excessive stress on the bone plate itself, and the fracture can cause second-degree injury in the patient's body.

In order to achieve the above purpose, please refer to Figures 1-3. This creation proposes a bone plate (100) with slotted screw holes. Its structure includes: a bone plate body (107) for attaching and fixing the bones of the affected part ( 400); Two or more slotted screw holes (101) are located on the bone plate body (107), and have a long slot-shaped structure, with an included angle β between the slotted screw holes (101) ; Among them, the surface of the two grooved screw holes (101) can have a curvature of α ₁ and α ₂ respectively, so that the bone screw (201) can follow the grooved screw hole during the process of driving into the bone The grooved track of (101) slides in the direction, so that the bone plate (100) with grooved screw holes can adjust its locking position according to the different indications. The range of the included angle β is 0-180 degrees. , So that more than two slotted screw holes (101) can be arranged according to the needs of the application.

In view of the above, in a preferred embodiment of this creation, please refer to Figures 2-4. The arrangement of slotted screw holes (101) on the bone plate body (107) is viewed from a top view. One of the slotted screw holes (101) is arranged horizontally, and the end is connected to another slotted screw hole (101) arranged in the longitudinal direction to make the overall appearance of a T shape. The head part of the bone screw (201) can be It is accommodated on the surface of the grooved screw hole (101) with α ₁ and α ₂ curvature, so that the bone screw (201) can adjust the locking position in the up, down, or left and right directions according to the direction of the grooved screw hole (101). To achieve the first and second goals of this creation. Among them, according to one viewpoint of this creation, since the slotted screw hole bone plate (100) has the above slotted screw holes (101) that can be arranged according to application needs, this creation can be applied to various types of fractures, such as transverse fractures. Indications such as sphenoid transverse fractures, spiral fractures, oblique fractures, comminuted fractures, segmental fractures, articular fractures, epiphyseal fractures, or various types of osteotomies are not limited to the above.

Please refer to Figure 3, according to an embodiment of the present creation, the end of the slotted screw hole (101) is connected with a circular screw hole (105), and the surface of the circular screw hole (105) has a curvature of α ₃ structure. According to one of the viewpoints of this creation, the effect of the circular screw hole (105) is that the T-shaped slotted screw hole (101) can drive the required bone screw (201) in the transverse and longitudinal directions. , It is also possible to drive additional bone screws (201) into the circular screw holes (105), so that the surgeon can adjust the position of the bone plate body on the bone (400) through the slotted screw holes (101). When a bone screw (201) is driven into the circular screw hole (105), the locking angle of the bone plate body (107) on the bone (400) can also be adjusted in a clockwise or counterclockwise direction to increase The bone plate (100) with slotted screw holes is flexible for indications.

軸方向夾一斜角斜向鎖入骨骼(401)，以配合不同骨折或截骨手術需要的骨骼(400)斷面調整鎖入的角度。應注意的是，在本創作所屬領域熟知技術者在閱讀完本創作後，理當了解所述的槽式螺釘孔(101)和圓形螺釘孔(105)亦可根據應用狀況的不同，調整其於骨板本體(107)上的位置與和

軸方向的斜角，使骨螺釘(201)得以任意期望的斜角鎖入骨骼(400)中。 In an embodiment of the present creation, grooved screw holes (101) and round screw holes (105) with curvatures α ₁ , α ₂ , and α ₃ can enable the bone screw (201) to be driven in Perpendicular to the bone plate body (107)

An oblique angle is clamped in the axial direction to lock the bone (401) obliquely, so as to adjust the locking angle to match the section of the bone (400) required for different fractures or osteotomies. It should be noted that after reading this creation, those skilled in the art to which this creation belongs should understand that the slotted screw holes (101) and round screw holes (105) can also be adjusted according to different application conditions. On the bone plate body (107) and the position and

The oblique angle in the axial direction enables the bone screw (201) to be locked into the bone (400) at any desired oblique angle.

In an embodiment of the present invention, the surface of the grooved screw hole (101) and the round screw hole (105) can be provided with a thread structure according to the needs of the application, which allows the head of the bone screw (201) It can be screwed into the slotted screw hole (101) and round screw hole (105). Therefore, this creation can be further applied to fractures and indications of two or more bone (400) fragments. . In addition, the oblique angle of the slotted screw hole (101) and the round screw hole (105) can also be set according to the surface topography of the bone plate body (107), as shown in Figure 4, the bone plate body (107) The surface topography makes the slotted screw hole (101) and the circular screw hole (105) operable to sit on the bone (400). It should be noted that although the embodiment in FIG. 4 uses long bones as an example, the surface topography of the bone plate body (107) can be set according to four parts: skull, trunk, upper limb, and lower limb. , The surgeon can modify the surface topography of the bone plate body (107) to make the invention more effectively match the patient's indications.

According to the content of this creation, the number of slotted screw holes (101) can be N, of which, N is a natural number greater than 2. In the preferred viewpoint of this creation, the above-mentioned N slotted screw holes (101) can be combined linearly or non-linearly into corresponding structures according to application requirements. Please refer to Figures 5A-5F, the configuration of the slotted screw hole (101) on the bone plate body (107) can be, but not limited to, cross-shaped (501), C-shaped (503), and Pozi-shaped (505) , ㄑ-shaped (507), X-shaped (509), and Γ-shaped (511), wherein the above-mentioned grooved screw holes (101) have an included angle β, wherein the range of the included angle β is 0 -180 degrees, so that more than two slotted screw holes (101) can be arranged according to the needs of the application.

In view of the above, in one of the application scenarios of this creation, the long bones (including upper limb bones and lower limb bones) in Figure 4 suffered oblique fractures or tear fractures at the epiphysis as an example. In the application scenario of, the fracture section and fracture angle of oblique fracture or tear fracture are not necessarily a neat and regular section, and there may not be only two pieces of bone (400). Therefore, this creation is to make the bone In a preferred embodiment, the plate body (107) can have greater versatility under a single specification and conform to the skeleton (400) architecture of different patients, and the bone plate body (107) can be linear Or a non-linear combination of several slotted screw holes (101), and a circular screw hole (105) is selectively set at the end of the slotted screw hole (101) so that the bone screw (201) can follow the long groove The shape structure adjusts the locking position and angle back and forth, so that after the bone screw (201) is locked, the broken bone can be locked at the proper position and angle, so as to achieve the first and second objectives of this case. According to the statistics of human body structure in this creation, the optimized length range of slotted screw hole (101) is between 0.1-10 centimeters (cm).

The above description is the preferred embodiment of this creation. Those skilled in this field should be able to understand that it is used to illustrate the creation and not to limit the scope of patent rights claimed in this creation. The scope of its patent protection shall be determined by the attached scope of patent application and its equivalent fields. Anyone who is familiar with the art in this field, without departing from the spirit or scope of this patent, makes changes or modifications that are equivalent changes or designs completed under the spirit of this creation, and should be included in the following patent scope Inside.

100: Bone plate with slotted screw hole

101: Slotted screw hole

105: round screw hole

107: Bone Plate Body

α ₁ , α ₂ : curvature

Claims (10)

A bone plate with slotted screw holes, including: A bone plate body installed on the affected part of the bone; and, A plurality of slotted screw holes are arranged on the bone plate body and have a long slot-shaped structure, and the plurality of slotted screw holes are perpendicular to each other; Wherein the plurality of screw holes of the trough surfaces, the structure having a ratio of α _1, the bone screw may be slotted along the plurality of screw holes translational adjust its position and angle of the locking. The bone plate with slotted screw holes according to claim 1, wherein the ends of the plurality of slotted screw holes have at least one round screw hole, and the surface of the at least one round screw hole has a curvature of α The structure of ₃ further increases the locking strength between the bone screw and the bone plate body. The bone plate with slotted screw holes according to claim 1, wherein the length of the plurality of slotted screw holes ranges from 0.1 to 10 cm. The bone plate with slotted screw holes according to claim 1, wherein the surface of the plurality of slotted screw holes has a thread structure, so that the bone screws can be inserted in a screwing manner and locked in the plurality of slots Type screw hole. The bone plate with slotted screw holes according to claim 2, wherein the surface of the at least one round screw hole has a thread structure so that the bone screw can be inserted in a screwing manner and locked in the at least one round -Shaped screw hole. A bone plate with slotted screw holes, including: A bone plate body installed on the affected part of the bone; and, A plurality of slotted screw holes are arranged on the bone plate body and have a long slot-shaped structure. There is an included angle β between the plurality of slotted screw holes, so that the plurality of slotted screw holes can be linear or non-linear. The linear combination is in any configuration, where the included angle β ranges from 0 to 180 degrees; Wherein the plurality of screw holes of the trough surfaces, the structure having a ratio of α _1, the bone screw may be slotted along the plurality of screw holes translational adjust its position and angle of the locking. The bone plate with slotted screw holes as described in claim 6, wherein the linear or non-linear combination of the plurality of slotted screw holes is cross-shaped, C-shaped, Pozi-shaped, ㄑ-shaped, X-shaped Type, or Γ type. The bone plate with slotted screw holes according to claim 6, wherein the ends of the plurality of slotted screw holes have at least one round screw hole, and the surface of the at least one round screw hole has a curvature of α The structure of ₃ further increases the locking strength between the bone screw and the bone plate body. The bone plate with slotted screw holes according to claim 6, wherein the length of the plurality of slotted screw holes ranges from 0.1 to 10 cm. The bone plate with slotted screw holes according to claim 8, wherein the surface of the at least one round screw hole or the plurality of slotted screw holes has a thread structure.

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