Adjustable bone plate assembly

Abstract

The present invention provides an adjustable bone plate assembly, which belongs to the field of medical device technology. The adjustable bone plate assembly includes: a bone plate, including a bone plate body and a connecting end; a connecting structure, including at least two connecting parts each provided with a through hole, each of the connecting parts being hinged to the connecting end of a different bone plate; the connecting end is in a U-shaped fork structure, including two connecting plates that are parallel to each other and spaced apart, and the connecting parts can pass through the connecting plates. The bone plates of the present invention can be assembled and spliced arbitrarily, solving the problem that there are no matching bone plates for special fracture lines and that existing bone plates cannot be shaped at large angles. At the same time, because the bone plates can be combined and are universal, the supplier's inventory can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an adjustable bone plate assembly. Background Art

[0002] Fixation is a crucial component of bone injury treatment and, as such, has received significant attention. Treatment techniques are constantly evolving to achieve better outcomes. However, clinical treatment has revealed that current bone fixation methods have certain limitations. Due to variations in fracture shape, optimal fixation requires the selection of appropriate implants for each fracture to ensure effective fixation. This increases product development costs, leads to inventory backlogs, and increases costs. Summary of the Invention

[0003] In light of this, the present invention proposes an adjustable bone plate assembly that allows doctors to individually shape and bend the plate according to the fracture site. Since fracture lines vary, doctors can assemble and splice the plates based on their location and shape, and the plates can also be rotated. This solves the problem of no matching plate for a specific fracture line, and existing plates are unable to be shaped to large angles. The bone plate assembly can accommodate a variety of shapes.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] Adjustable bone plate assembly, including:

[0006] A bone plate, comprising a bone plate body and a connecting end;

[0007] The connecting structure comprises at least two connecting parts each having a through hole, wherein each connecting part is hingedly connected to a connecting end of a different bone plate;

[0008] The connecting end is in a U-shaped fork structure, comprising two connecting plates that are parallel to each other and spaced apart, and the connecting portion can pass through between the connecting plates.

[0009] As a preferred solution of the above-mentioned adjustable bone plate assembly, the connecting part and the connecting end are connected by a pin structure, and the pin structure includes a pin body and a clamping piece, the clamping piece is connected to the end of the pin body and the clamping piece is clamped to the connecting plate of the connecting end, and the pin body is inserted into the through hole of the connecting part.

[0010] As a preferred solution of the above-mentioned adjustable bone plate assembly, the clamping member has a circular structure, and the outer ring of the clamping member is provided with at least one protruding tooth, and the protruding tooth is engaged with the corresponding groove on the connecting plate.

[0011] As a preferred solution of the above-mentioned adjustable bone plate assembly, the outer ring of the clamping member is provided with a circle of convex teeth.

[0012] As a preferred solution of the above-mentioned adjustable bone plate assembly, the diameter of the pin body is larger than the diameter of the circle where the roots of the protruding teeth are located.

[0013] As a preferred solution of the above-mentioned adjustable bone plate assembly, there are two clamping members, which are respectively connected to the two ends of the pin body.

[0014] As a preferred solution of the above-mentioned adjustable bone plate assembly, the two clips are respectively a first clip and a second clip, the first clip is connected to the connecting plate on the side away from the bone surface, and the first clip is provided with a tool hole for connecting to a rotating tool.

[0015] As a preferred solution of the above-mentioned adjustable bone plate assembly, the second clamping member is connected to the connecting plate that is in contact with the bone surface, and a locking hole is provided through the second clamping member and the pin shaft body.

[0016] As a preferred solution of the above-mentioned adjustable bone plate assembly, the clamping member and the pin shaft body are connected by a tapered pin.

[0017] As a preferred solution of the above-mentioned adjustable bone plate assembly, the connection structure includes an indicator arrow, an angle mark is provided on the connection plate of the bone plate, and the indicator arrow points to the angle mark.

[0018] Compared with the prior art, the adjustable bone plate assembly of the present invention has the following advantages:

[0019] The bone plates of the present invention can be assembled and spliced arbitrarily, and can be rotated. The bone plate components can be provided in various shapes, solving the problems of no matching bone plates for special fracture lines and the inability of existing bone plates to be shaped at large angles.

[0020] The bone plate of the present invention is a universal steel plate that can solve various parts of the body and various fracture situations. At the same time, due to its combination and versatility, it can reduce the supplier's inventory stocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic structural diagram of the adjustable bone plate assembly according to an embodiment of the present invention;

[0023] Figure 2 A front view of a bone plate provided in an embodiment of the present invention;

[0024] Figure 3 A side view of a bone plate provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a connection structure provided in an embodiment of the present invention;

[0026] Figure 5 A schematic structural diagram of a pin structure provided in an embodiment of the present invention;

[0027] Figure 6 A top view of the pin structure provided by an embodiment of the present invention;

[0028] Figure 7 for Figure 6 Cross-sectional view along the BB direction.

[0029] Description of reference numerals:

[0030] 1. Bone plate; 2. Connection structure; 3. Pin structure;

[0031] 11. Connecting end; 111. Connecting plate; 112. Rotation hole; 1111. Angle mark; 12. Bone plate body; 121. First Kirschner hole; 122. First locking hole; 123. Upper slot; 124. Restriction slot; 125. Corrugated structure;

[0032] 21. Connecting portion; 22. Through hole; 23. Boss; 24. Second Kirschner hole; 25. Indicating arrow;

[0033] 31. Pin body; 32. First clamping member; 33. Second clamping member; 34. Protruding tooth; 35. Second locking hole; 36. Connecting hole;

[0034] 321. Tool hole. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] like Figure 1-7As shown, this embodiment provides an adjustable bone plate assembly, which includes a bone plate 1 and a connecting structure 2. The bone plate 1 includes a bone plate body 12 and a connecting end 11. The connecting structure 2 includes at least two connecting parts 21 each provided with a through hole 22. Each connecting part 21 is hinged to the connecting end 11 of a different bone plate 1. The connecting end 11 is a U-shaped fork structure, including two connecting plates 111 that are parallel to each other and spaced apart, and the connecting part 21 can pass through the connecting plates 111. The connecting parts 21 of the connecting structure 2 can be two or more. When there are two or more connecting parts 21, the angles of adjacent connecting parts 21 can be set in a variety of ways, which can be selected according to the needs of the fracture. The bone plate 1 can also have one, two or more connecting ends 11.

[0038] The adjustable bone plate assembly in this embodiment can arbitrarily assemble and splice the bone plate 1, and the bone plate 1 can be rotated. The bone plate assembly can provide various shapes, which solves the problem that there is no matching bone plate for special fracture lines and the existing bone plates cannot be shaped at large angles. At the same time, since the bone plate assembly is a universal steel plate, it can solve every part of the body and every fracture situation, and avoid the problem of excessive inventory caused by the production of too many types of bone plates.

[0039] like Figure 2 and Figure 3 As shown, in this embodiment, the plate body 12 of the bone plate 1 is provided with a corrugated structure 125 on both sides, allowing the plate 1 to be arbitrarily shaped and bent. Through the anatomical design concept, it is perfectly aligned with the bone surface. The plate body 12 is provided with a first Kirschner hole 121 and a first locking hole 122. The first locking hole 122 can be a universal locking hole, a pressure locking hole, or other types of holes.

[0040] An upper groove 123 is provided on the side of the bone plate 1 away from the bone surface, and a limiting groove 124 is provided on the side of the bone plate 1 in contact with the bone surface; the presence of the upper groove 123 can avoid stress concentration on the bone plate 1 and effectively prevent the bone plate 1 from breaking during shaping, and the presence of the limiting groove 124 can effectively reduce the stimulation of the bone plate 1 to the soft tissue.

[0041] like Figure 5-7 As shown, in this embodiment, the connecting portion 21 and the connecting end 11 are connected via a pin structure 3. The pin structure 3 includes a pin body 31 and a clamping member. The clamping member is connected to the end of the pin body 31 and is clamped to the connecting plate 111 of the connecting end 11. The pin body 31 is disposed within the through hole 22 of the connecting portion 21. The connecting structure 2 can rotate relative to the connecting end 11, thereby adjusting the angle between different bone plates 1 connected to the connecting structure 2.

[0042] Specifically, the clip has a circular structure, with at least one protruding tooth 34 disposed on its outer ring. A rotation hole 112 with a grooved edge is provided on the connecting plate 111. The protruding tooth 34 engages with the corresponding groove on the connecting plate 111. In this structure, the rotation of the clip can drive the rotation of the connecting plate 111. To prevent the clip of the pin structure 3 from slipping out of the connecting plate 111 and causing an unstable connection, the diameter of the pin body 31 is greater than the diameter of the circle containing the root of the protruding tooth 34. Furthermore, the thickness of the clip is the same as that of the corresponding connecting plate 111, and the axial length of the pin body 31 is the same as the distance between the opposing surfaces of the two connecting plates 111.

[0043] In other embodiments, if the diameter of the pin shaft body 31 is less than or equal to the diameter of the circle where the root of the protruding tooth 34 is located, in order to prevent the snap-on component from falling out, at least part of the thickness of the connecting portion 21 extending into the two connecting plates 111 of the connecting end 11 is the same as the thickness between the two connecting plates 111.

[0044] In the present embodiment, there are two clips, which are respectively connected to the two ends of the pin body 31. The clips and the pin body 31 are both provided with tapered holes, and the corresponding tapered holes are connected to form a connecting hole 36, and a tapered pin is chiseled into the connecting hole 36 to realize the connection between the clips and the pin body 31. The two clips are respectively a first clip 32 and a second clip 33. The first clip 32 is connected to the connecting plate 111 on the side away from the bone surface. The first clip 32 is provided with a tool hole 321 for connecting with a rotating tool. The tool hole 321 can be a hexagonal hole or a plum blossom hole, etc. The second clip 33 is connected on the connecting plate 111 that fits the bone surface. The second clip 33 and the pin body 31 are penetrated with a second locking hole 35. The locking nail is locked into the second locking hole 35 and can lock the connection between the connecting end 11 and the connecting portion 21 equally on the bone, which is conducive to the fixation of the fracture site and avoids the situation of poor fracture site fixation effect. The second locking hole 35 can be a universal locking hole for providing more locking directions; the second locking hole 35 can also be set as other types of locking holes as needed. The second locking hole 35 is composed of two coaxial parts on the second clamping member 33 and the pin body 31.

[0045] like Figure 4 As shown, the connecting structure 2 includes an indicator arrow 25. Angle markings 1111 are provided on the connecting plate 111 of the bone plate 1. The angle markings 1111 are spaced circumferentially along the edge of the rotation hole 112, and the indicator arrows 25 point to the angle markings 1111. The indicator arrows 25 are positioned on the boss 23 of the connecting structure 2, allowing the indicator arrows 25 and the angle markings to be aligned in the same plane, making them easier to read. During use, the angle between different bone plates can be determined by the angle markings 1111 to which the indicator arrows 25 point.

[0046] In this embodiment, the outer ring of the clip is provided with a circle of protruding teeth 34, corresponding to a circle of grooves at the edge of the through-hole 22 on the connecting plate 111 of the connecting end 11. Each protruding tooth 34 is adjacent to another, and the protruding teeth 34 can be triangular, trapezoidal, or sawtooth-shaped. When the circle of protruding teeth 34 on the clip is an isosceles triangle and adjacent protruding teeth 34 are connected, the angle corresponding to the protruding teeth 34 between adjacent angle markers can be more easily calculated, allowing for more accurate recording of the angle between the corresponding bone plates 1.

[0047] At least two second Kirschner holes 24 are also provided on the connection structure 2 , and Kirschner wires can be inserted into the second Kirschner holes 24 to temporarily fix the connection structure 2 .

[0048] The process of using the bone plate assembly of the present invention in orthopedic surgery is divided into the following steps:

[0049] Preoperative planning: Through the patient's CT data, a 3D digital model of the patient's fracture site can be obtained, and then the 3D model is printed to plan the surgical plan before surgery. That is, the direction of the screw hole is determined by the fracture type, the splicing of the bone plate 1 is reasonably planned, and the appropriate number of bone plates 1 are selected for assembly through the connecting structure 2. The bone plate 1 is shaped and bent according to the use site to achieve the preoperative plan.

[0050] Intraoperative reduction: Based on the anatomical design concept of bone plate 1, the fracture position is reduced according to the anatomical shape of bone plate 1, and the anatomical shape of each bone plate is adjusted to make it adhere to the bone surface.

[0051] Installation of bone plate 1: First, temporarily fix the connecting structure 2 and bone plate 1 with a Kirschner needle. If the angle of bone plate 1 does not meet the requirements, use existing tools to connect the tool hole 321 to rotate and adjust it during the operation until it reaches the ideal position.

[0052] Screw implantation: Universal locking screws are implanted in the pin structure 3 and the bone plate 1 in sequence to complete the final locking of the bone plate assembly.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Adjustable bone plate assembly, characterized by: include: A bone plate (1) comprising a bone plate body (12) and a connecting end (11); A connecting structure (2) comprising at least two connecting parts (21) each provided with a through hole (22), wherein each connecting part (21) is hingedly connected to a connecting end (11) of a different bone plate (1); The connecting end (11) is in a U-shaped fork structure, comprising two connecting plates (111) that are parallel to each other and spaced apart, and the connecting portion (21) can pass through between the connecting plates (111); The connecting portion (21) and the connecting end (11) are connected via a pin structure (3), the pin structure (3) comprising a pin body (31) and a clamping member, the clamping member being connected to the end of the pin body (31) and clamping the clamping member to the connecting plate (111) of the connecting end (11), the pin body (31) being inserted into the through hole (22) of the connecting portion (21); The clamping member has a circular structure, and an outer ring of the clamping member is provided with at least one protruding tooth (34), and the protruding tooth (34) is engaged with a corresponding groove on the connecting plate (111); There are two clamping parts, which are respectively connected to the two ends of the pin shaft body (31); The two clamping parts are respectively a first clamping part (32) and a second clamping part (33); the first clamping part (32) is connected to the connecting plate (111) on a side away from the bone surface; the first clamping part (32) is provided with a tool hole (321) for connecting to a rotating tool; The second clamping member (33) is connected to the connecting plate (111) that is in contact with the bone surface, and a locking hole is provided through the second clamping member (33) and the pin shaft body (31); The connecting structure (2) can rotate relative to the connecting end (11), thereby being able to adjust the angles between different bone plates (1) connected to the connecting structure (2).

2. The adjustable bone plate assembly according to claim 1, characterized in that: The outer ring of the clamping member is provided with a circle of protruding teeth (34).

3. The adjustable bone plate assembly according to claim 1, wherein: The diameter of the pin shaft body (31) is greater than the diameter of the circle where the tooth roots of the protruding teeth (34) are located.

4. The adjustable bone plate assembly according to claim 1, characterized in that: The clamping member and the pin shaft body (31) are connected by a tapered pin.

5. The adjustable bone plate assembly according to claim 1, characterized in that: The connection structure (2) comprises an indicating arrow (25), an angle mark (1111) is provided on the connection plate (111) of the bone plate (1), and the indicating arrow (25) points to the angle mark (1111).

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