Combined bone fracture plate

Abstract

The invention relates to a combined bone fracture plate which can comprise a first end plate, a second end plate, at least one connecting plate and a rope, the first end plate, the connecting plate and the second end plate can be connected end to end, and one of the first end plate, the connecting plate and the second end plate is provided with a tightening device. The rope connects the first end plate, the connecting plate and the second end plate in series and surrounds the tightening device, the rope has a tightening state and an untightening state, in the tightening state, the first end plate, the connecting plate and the second end plate are rigidly connected together, in the untightening state, the first end plate, the connecting plate and the second end plate are rigidly connected together, and in the untightening state, the first end plate, the connecting plate and the second end plate are rigidly connected together. The first end plate, the connecting plate and the second end plate are not connected with one another. According to the combined bone fracture plate, minimally invasive implantation can be achieved, harm to a patient is reduced, the rehabilitation period is shortened, meanwhile, bone fracture plates of a large number of specifications and models do not need to be prepared, and the production cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically to a modular bone plate. Background Technology

[0002] Current bone plate implantation surgery is limited by the diverse shapes of the bone plates themselves, making minimally invasive surgery quite difficult. Some large-sized or complex bone plates can only be implanted by fully opening the surgical window during surgery, causing secondary damage to fracture patients.

[0003] For bone plate manufacturers, bone plates are complex and diverse, with numerous specifications and models, depending on the fracture location and type. Each type of plate requires independent processing, resulting in extremely high resource consumption during production. Summary of the Invention

[0004] The purpose of this invention is to provide a modular bone plate to solve the above-mentioned problems. To this end, the technical solution adopted by this invention is as follows:

[0005] A modular bone plate may include a first end plate, a second end plate, at least one connecting plate, and a rope. The first end plate, the connecting plate, and the second end plate are connected end-to-end, and one of them is provided with a tightening device. The rope connects the first end plate, the connecting plate, and the second end plate together and wraps around the tightening device. The rope has a tightened state and an untightened state. In the tightened state, the first end plate, the connecting plate, and the second end plate are rigidly connected together. In the untightened state, the first end plate, the connecting plate, and the second end plate are not connected to each other.

[0006] In one embodiment, the first end plate, the second end plate, and the connecting plate are rigidly connected by a slot and block structure with complementary shapes.

[0007] In one embodiment, one of the first end plate and the second end plate is provided with a slot, and the other is provided with a block; and one end of the connecting plate is provided with a slot, and the other end is provided with a block.

[0008] In one embodiment, the card block is arc-shaped.

[0009] In one embodiment, the length of the card block is 10% to 30% of the length of the plate, and the thickness is 50% to 80% of the thickness of the plate.

[0010] In one embodiment, the free ends of the first end plate and the second end plate are in the shape of rounded triangular plates.

[0011] In one embodiment, the first end plate, the connecting plate, and the second end plate each have a screw hole.

[0012] In one embodiment, if the number of connecting plates is greater than 2 and the tightening device is disposed on one of the connecting plates, then the connecting plate with the tightening device does not have screw holes.

[0013] In one embodiment, the first end plate, the connecting plate, and the second end plate have the same length.

[0014] In one embodiment, the tightening device is a locking screw with a winding groove, and the rope is wound around the winding groove.

[0015] The present invention adopts the above technical solution, and the specific beneficial technical effects are as follows:

[0016] 1. Because the combined bone plate of the present invention moves between the plates when it is not tightened, it can achieve minimally invasive implantation, greatly reducing harm to patients and shortening their recovery period.

[0017] 2. When producing different plate types for different fracture sites, it is only necessary to arrange and combine the first end plate, the second end plate, and the connecting plate to complete different styles of plate types. There is no need to prepare a large number of bone plates of various specifications, which greatly reduces production costs. Attached Figure Description

[0018] Figure 1 This is a perspective view of a combined bone plate according to a first embodiment of the present invention, wherein the combined bone plate is in an untightened state;

[0019] Figure 2 yes Figure 1 An exploded view of the combined bone plate shown;

[0020] Figure 3a yes Figure 1 A perspective view of the locking screws of the combined bone plate shown;

[0021] Figure 3b yes Figure 1 A cross-sectional view of the locking screws of the combined bone plate shown;

[0022] Figures 4a-4d yes Figure 1 The diagram shown illustrates the implantation process of the modular bone plate, in which... Figure 4a The image shows the state of the combined bone plate just inserted into the small window. Figure 4b This shows the state in which the entire composite bone plate is pulled into the human body. Figure 4c The image shows the state of the combined bone plate after it has been tightened. Figure 4d The image shows the state after the combined bone plate has been fixed with bone screws inserted.

[0023] Figure 5This is a perspective view of a combined bone plate according to a second embodiment of the present invention, wherein the combined bone plate is in an untightened state.

[0024] Figure 6 yes Figure 5 The diagram shows a three-dimensional representation of a modular bone plate fixed to a fractured bone. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0026] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0027] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0028] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0029] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0030] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0031] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] like Figure 1 and 2 As shown, a combined bone plate 100 according to a first embodiment of the present invention may include a first end plate 1, a second end plate 2, at least one (four are shown in the figure) connecting plate 3, and a rope 4. The first end plate 1, the connecting plate 3, and the second end plate 2 can be connected end-to-end, and one of them is equipped with a tightening device 5. The rope 5 connects the first end plate 1, the connecting plate 3, and the second end plate 2 together and wraps around the tightening device 5. The rope 4 has a tightened state and an untightened state. In the tightened state, the first end plate 1, the connecting plate 3, and the second end plate 2 are rigidly connected together; in the untightened state, the first end plate 1, the connecting plate 3, and the second end plate 2 are not connected to each other. The number and structural shape of the connecting plates 3 can be designed and manufactured according to the specific fracture site. By selecting different numbers and structural shapes of the connecting plates 3, applications for various fracture sites can be adapted. During surgery, a small window can be opened to pull the combined bone plate (untightened state) into the fracture site; after positioning, it is tightened and fixed in the body, and bone screws are inserted to complete the fixation of the fracture site, achieving minimally invasive implantation. Figure 4d As shown, this greatly reduces harm to patients and shortens their recovery period.

[0034] Preferably, to facilitate a rigid connection between the first end plate 1, the second end plate 2, and the connecting plate 3, the first end plate 1, the second end plate 2, and the connecting plate 3 are rigidly connected through a complementary slot and block structure. Specifically, the first end plate 1 is provided with a slot 11, the second end plate 2 is provided with a block 21, and one end of the connecting plate 3 is provided with a slot 31, while the other end is provided with a block 32. When the rope 4 is tightened, the block 32 of the connecting plate 3 is inserted into the slot 11 of the first end plate 1, and the block 32 of the second end plate 2 is inserted into the slot of the connecting plate 3. The block 32 of one of two adjacent connecting plates 3 is inserted into the slot 31 of the other, thereby achieving a rigid connection between the plates. It should be understood that the slot and block structure of the first end plate 1, the second end plate 2, and the connecting plate 3 is not limited to the embodiment shown. For example, both the first end plate 1 and the second end plate 2 may be provided with slots or blocks, and correspondingly, the connecting plate 3 may also be provided with slots or blocks at both ends, as long as they can be interlocked with each other.

[0035] In the illustrated embodiment, the locking blocks 21 and 32 are arc-shaped, meaning their outer peripheral surfaces are not flat but curved. This shape facilitates insertion and avoids sharp edges that could scratch the operator. It should be understood that the cross-sectional shape of the locking blocks can also be a round rectangle or a circle.

[0036] To ensure sufficient rigidity between the plates during the fixed connection, the clamping blocks 21 and 32 need to have a certain length and thickness. Preferably, the clamping blocks are 20% to 30% of the plate length and 50% to 80% of the plate thickness. For example, for shorter plates (e.g., less than 1 cm), the length of the clamping block is generally 2 mm, and for longer plates (e.g., 4 to 5 cm), the length of the clamping block is generally 5 mm.

[0037] The length of each plate (i.e., the first end plate 1, the connecting plate 3, and the second end plate 2) can be designed according to the configuration of the bone plate required for the fracture site. For example, for straight bone plates, the length of each plate can be designed to be longer, for example, 2-5 cm, while for irregular bone plates, the length of each plate is less than 2 cm. Preferably, for bone plates of the same type, the lengths of the first end plate 1, the connecting plate 3, and the second end plate 4 are the same to reduce the variety of plates.

[0038] The free ends 12 and 22 of the first end plate 1 and the second end plate 2 (i.e., the ends not connected to the connecting plate 3) are rounded triangular plates to facilitate the insertion and removal of the bone plate. Preferably, the upper and lower surfaces of the free ends of the end plates are inclined surfaces, that is, the thickness gradually decreases towards the end.

[0039] The lower surfaces (i.e. the side in contact with the bone) of the first end plate 1, the second end plate 2, and the connecting plate 3 are typically curved to fit the bone closely.

[0040] The first end plate 1, the second end plate 2, the connecting plate 3, and the tightening device 5 can all be made of common bone plate materials such as stainless steel, and the rope 4 can be made of high-strength fiber polymer material.

[0041] like Figure 1 and 2 As shown, the combined bone plate 100 includes a first end plate 1, five connecting plates 3, and a second end plate 2. The connecting plate 3 equipped with the tightening device 5 does not have screw holes, while the other plates all have screw holes 10. It should be understood that the connecting plate 3 with the tightening device 5 may also have screw holes; the number of connecting plates 3 is not limited to the illustrated embodiment; and the tightening device 5 may also be located on the first end plate 1 or the second end plate 2.

[0042] In the illustrated embodiment, the two ends of the rope 4 are respectively engaged with two diagonally arranged through holes on the connecting plate 3 equipped with the tightening device 5, and the rope 4 is wound around the tightening device 5 in the middle, with the rope 4 on both sides of the tightening device 5 forming a semi-racetrack shape. It should be understood that the arrangement of the rope 4 in this combined bone plate 100 is not limited to the illustrated embodiment, and can be designed according to the position of the tightening device 5.

[0043] like Figure 2 , 3a As shown in 3b, the tightening device 5 is a locking screw with a winding groove 51, on which the rope 4 is wound. The locking screw 5 is rotatably mounted on the connecting plate 3, and the combination bone plate can be tightened or loosened by turning the locking screw 5. Specifically, the connecting plate 3 has a mounting groove 33, the bottom of which has a through hole, and the bottom of the locking screw 5 has a rotating shaft 53. The locking screw 5 is received in the through hole through the rotating shaft 53 and is rotatably mounted in the mounting groove 33. In the illustrated embodiment, the top of the locking screw 5 has a Phillips head groove 52, which can be operated with a Phillips head screwdriver. It should be understood that the groove 52 on the top of the locking screw 5 can also be other shapes, such as a straight line, a cross shape, or a hexagon. The tightening device 5 can also be in other forms.

[0044] During assembly, first, thread the rope 4 through the threading hole near the first end plate 1 in the mounting groove 33 of the connecting plate 3 where the tightening device 5 (i.e., the locking screw 5) is located. Then, thread the rope through the connecting plate 3 on the side of the first end plate, fold it back through the first end plate 1, and return to the mounting groove 3. Next, wrap the rope around the winding groove 51 of the locking screw 5, thread it through the threading hole near the second end plate 1, thread it through the connecting plate 3 on the side of the second end plate, fold it back through the second end plate 2, and return to the mounting groove 3. Then, tie the two ends of the rope together to secure it to the connecting plate 3 to prevent it from coming loose. Finally, install the locking screw 5 in the mounting groove 33 to complete the assembly.

[0045] See below. Figures 4a-4d The implantation process of the combined bone plate 100 of the present invention is described. First, a small window is made in the skin at the fracture site as an inlet and an outlet. Then, the first end plate 1 of the combined bone plate 100, to which the traction wire 101 is fixed, is inserted through the inlet and the traction wire 101 is pulled out through the outlet. Figure 4a As shown; then, the entire composite bone plate 100 is pulled into the fracture site via traction wire 101, as... Figure 4b As shown; after positioning, make a small opening at the position corresponding to the locking screw 5, and tighten the locking screw 5 with a screwdriver to rigidly connect the plates of the combined bone plate 100 together, as shown. Figure 4c As shown; finally, insert the bone screws 102 into the screw holes to complete the fixation, and then suture the wound on the skin. Figure 4d As shown.

[0046] Figure 5 and 6 A combined bone plate 200 according to a second embodiment of the present invention is shown. Unlike the first embodiment, this combined bone plate 200 is arc-shaped, suitable for cases where the fracture line is relatively inclined. In this embodiment, the structures of the first end plate 1 and the second end plate 2 are the same as those in the first embodiment. The connecting plate 3 has various shapes, including two arc-shaped connecting plates and one T-shaped connecting plate, wherein the tightening device 5 is disposed on the T-shaped connecting plate 3. The connection relationships of the various components and the surgical procedure are basically the same as in the first embodiment, and will not be described again here.

[0047] The bone plate of the present invention has the following advantages:

[0048] 1. Because the combined bone plate of the present invention moves between the plates when it is not tightened, it can achieve minimally invasive implantation, greatly reducing harm to patients and shortening their recovery period.

[0049] 2. When producing different plate types for different fracture sites, it is only necessary to arrange and combine the first end plate, the second end plate, and the connecting plate to complete different styles of plate types. There is no need to prepare a large number of bone plates of various specifications, which greatly reduces production costs.

[0050] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A combination bone plate, characterized in that The application relates to a kind of end plate assemblies, comprising a first end plate, a second end plate, at least one connecting plate and a rope, wherein the first end plate, the connecting plate and the second end plate can be connected end to end, one of which is provided with a tightening device, the rope connects the first end plate, the connecting plate and the second end plate together and is wound around the tightening device, the rope has a tightened state and an untightened state, in the tightened state, the first end plate, the connecting plate and the second end plate are rigidly connected together, in the untightened state, the first end plate, the connecting plate and the second end plate are not connected to each other.

2. The combination bone plate of claim 1, wherein The first end plate, the second end plate and the connecting plate are rigidly connected by a complementary shape of a clamping groove and a clamping block structure.

3. The combination bone plate of claim 2, wherein, One of the first end plate and the second end plate is provided with a clamping groove, and the other is provided with a clamping block; and one end of the connecting plate is provided with a clamping groove, and the other end is provided with a clamping block.

4. The combination bone plate of claim 3, wherein, The clamping block is arc-shaped.

5. The combination bone plate of claim 3, wherein, The length of the clamping block is 10% to 30% of the length of the plate, and the thickness is 50% to 80% of the thickness of the plate.

6. The combination bone plate of claim 3, wherein, The free end of the first end plate and the second end plate is in the shape of a round-cornered triangular plate.

7. The combination bone plate of claim 1 wherein, The first end plate, the connecting plate and the second end plate are each provided with a screw hole.

8. The combination bone plate of claim 1 wherein, If the number of connecting plates is greater than 2 and the tightening device is arranged on one of the connecting plates, the connecting plate provided with the tightening device is not provided with a screw hole.

9. The combination bone plate of claim 1 wherein, The first end plate, the connecting plate and the second end plate have the same length.

10. The combination bone plate of claim 1 wherein, The tightening device is a locking screw and is provided with a winding groove, and the rope is wound around the winding groove.

Images