CN213963603U - Bone plate assembly - Google Patents

Abstract

The utility model provides a bone plate assembly, include: the first plate body is provided with a fixing hole; the second plate body is connected to the first plate body in an overlapping mode, an avoiding space is arranged in the position, corresponding to the fixing hole, of the second plate body, and an arc-shaped concave surface is formed in one side, away from the first plate body, of the second plate body. The technical scheme of the application effectively solves the problem that the steel plate in the related technology has the risk of early failure.

Description

Bone plate assembly

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a coaptation board subassembly.

Background

At present, the fracture incidence is very high, and the application of the anatomical bone fracture plate is wider in the fracture fixation treatment. The existing anatomical bone fracture plate has the difference in the bone morphology and the difference in the fracture, namely personalized difference, even if the specification and the model of the existing anatomical bone fracture plate are divided into small enough when the existing anatomical bone fracture plate is applied, the inosculation between the existing anatomical bone fracture plate and the bone surface is not ideal.

In the related art, the conventional steel plate can be bent and molded again in the operation, so that the mechanical property of the steel plate is changed, the mechanical strength of the steel plate is reduced, and the early failure risk of the steel plate exists.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a coaptation board subassembly to there is the problem of the risk of early failure in the steel sheet of solving among the correlation technique.

In order to achieve the above object, the utility model provides a bone plate assembly, include: the first plate body is provided with a fixing hole; the second plate body is connected to the first plate body in an overlapping mode, an avoiding space is arranged in the position, corresponding to the fixing hole, of the second plate body, and an arc-shaped concave surface is formed in one side, away from the first plate body, of the second plate body.

Further, the second plate body includes that substrate layer and superpose set up in the layer of fusing of one side of substrate layer, and the substrate layer is located first plate body and fuses between the layer, and the arc concave surface is located the one side of the substrate layer of keeping away from on the layer of fusing, is provided with the first hole of dodging that corresponds with the fixed orifices on the substrate layer, and the layer of fusing is provided with the second hole of dodging corresponding to the first position department of dodging the hole.

Further, the substrate layer is connected with the first plate body in a welding mode.

Further, the substrate layer includes the flakiness portion and is located the annular portion of one side of flakiness portion, and the annular portion sets up in the border of flakiness portion, and the first hole of dodging sets up on the flakiness portion, flakiness portion and first plate body welded connection, and the annular portion is located between flakiness portion and the layer of fusing, and the first inside and the second of dodging hole, annular portion of dodging form the space of dodging jointly.

Further, the ratio of the thickness of the sheet portion to the thickness of the annular portion is between 3 and 4.

Further, the substrate layer is arranged in a bending mode, the substrate layer comprises a first plate section, a second plate section and a third plate section which are sequentially connected, and the second avoiding hole is formed in the first plate section and/or the third plate section.

Further, the first plate body is bent and arranged, the first plate body comprises a fourth plate section, a fifth plate section and a sixth plate section which are sequentially connected, fixing holes are formed in the fourth plate section and/or the sixth plate section, the fourth plate section corresponds to the first plate section, the fifth plate section corresponds to the second plate section, and the sixth plate section corresponds to the third plate section.

Further, the fixing hole includes a plurality of fixing holes, and the plurality of fixing holes are arranged at intervals on the first plate body.

Furthermore, the avoidance space comprises a plurality of avoidance spaces, and the avoidance spaces and the fixing holes are arranged in a one-to-one correspondence mode.

Furthermore, the first plate body is made of titanium alloy; the second plate body is of a porous structure.

Use the technical scheme of the utility model, coaptation board subassembly includes: the first plate body and the second plate body. The first plate body is provided with a fixing hole. The second plate body is connected to the first plate body in an overlapping mode, and an avoiding space is arranged in the position, corresponding to the fixing hole, of the second plate body. One side of the second plate body, which is far away from the first plate body, forms an arc-shaped concave surface. During operation, the bone plate component is placed at the position of fracture of the bone, and the arc-shaped concave surface of the second plate body is attached to the outer surface of the bone. The first plate body and the second plate body can be fixed on the skeleton by fasteners through the fixing holes in the first plate body and the avoiding space in the second plate body, so that the arc-shaped concave surface is tightly matched with the outer surface of the skeleton. Because the first plate body can increase the structural strength of the second plate body, the second plate body is not easy to deform, the shape of the arc-shaped concave surface can be ensured, the moulding operation of bending again is not needed, the operation time is short, and the risk of early failure of the bone fracture plate assembly is effectively reduced. Therefore, the technical scheme of the application effectively solves the problem that the steel plate in the related art has the risk of early failure.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates a schematic front view of a bone plate assembly according to an embodiment of the bone plate assembly of the present invention placed on a bone;

FIG. 2 illustrates a schematic cross-sectional view A-A of the bone plate assembly of FIG. 1;

FIG. 3 is a rear view of the bone plate assembly of FIG. 1 positioned on a bone;

FIG. 4 illustrates a side schematic view of the bone plate assembly of FIG. 1;

FIG. 5 illustrates a front view of the bone plate assembly of FIG. 1;

FIG. 6 illustrates a schematic cross-sectional view B-B of the bone plate assembly of FIG. 5;

FIG. 7 illustrates a rear view of the bone plate assembly of FIG. 1; and

FIG. 8 shows a schematic cross-sectional view of the bone plate assembly of FIG. 7 taken along line C-C.

Wherein the figures include the following reference numerals:

1. a bone; 10. a first plate body; 11. a fixing hole; 12. a fourth plate segment; 13. a fifth plate segment; 14. a sixth plate segment; 20. a second plate body; 21. avoiding a space; 211. a first avoidance hole; 212. a second avoidance hole; 22. an arc-shaped concave surface; 23. a substrate layer; 231. a sheet-like portion; 232. an annular portion; 24. a fusion layer; 31. a first plate section; 32. a second plate section; 33. a third plate segment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 3, the bone plate assembly of the present embodiment includes: a first plate body 10 and a second plate body 20. The first plate body 10 is provided with a fixing hole 11. The second plate 20 is stacked and connected to the first plate 10, and an escape space 21 is provided at a position of the second plate 20 corresponding to the fixing hole 11. The side of the second plate body 20 remote from the first plate body 10 is formed with an arcuate concave surface 22.

By applying the technical scheme of the embodiment, the bone plate assembly is placed at the position of the fracture of the bone 1 in the operation process, and the arc-shaped concave surface 22 of the second plate body 20 is attached to the outer surface of the bone. The first plate 10 and the second plate 20 can be fixed to the bone 1 using fasteners through the fixing holes 11 of the first plate 10 and the escape spaces 21 of the second plate 20 such that the curved concave surface 22 is closely fitted to the outer surface of the bone. Because the first plate body 10 can increase the structural strength of the second plate body 20, the second plate body 20 is not easy to deform, the shape of the arc-shaped concave surface 22 can be ensured, the bending and shaping operation is not needed, the operation time is short, and the risk of early failure of the bone fracture plate assembly is effectively reduced. Therefore, the technical scheme of the embodiment effectively solves the problem that the steel plate in the related art has the risk of early failure.

As shown in fig. 2 and 4, the second plate 20 includes a backing layer 23 and a fusing layer 24 stacked on one side of the backing layer 23. The backing layer 23 is positioned between the first plate body 10 and the fused layer 24, and the arc-shaped concave surface 22 is positioned on the side of the fused layer 24 far away from the backing layer 23. The provision of the backing layer 23 increases the structural strength of the fused layer 24 on the one hand and the structural strength of the connection of the fused layer 24 to the first plate body 10 on the other hand. The substrate layer 23 is provided with first avoiding holes 211 corresponding to the fixing holes 11. The arrangement of the first avoidance hole 211 is convenient for the substrate layer 23 to avoid the fastener, and the substrate layer 23 is prevented from interfering with the fastener. The fusion layer 24 is provided with a second avoiding hole 212 at a position corresponding to the first avoiding hole 211. The second avoidance hole 212 is arranged, so that the fusion layer 24 is convenient to avoid the fastener, and the fusion layer 24 is prevented from interfering with the fastener. In addition, the arc-shaped concave surface 22 is positioned on one side of the fusion layer 24 far away from the substrate layer 23, so that the inosculation performance of the bone plate assembly and the bone 1 is good, and the probability of fixation failure of the bone plate assembly is greatly reduced.

As shown in fig. 2, 4 and 6, the backing layer 23 is welded to the first plate body 10. Thus, the second plate body 20 and the first plate body 10 can be connected together, so that the bone plate assembly has the advantages of simple process, short processing period and lower manufacturing cost. Preferably, the substrate layer 23 is connected to the first plate body 10 by laser welding.

As shown in fig. 2, 4, and 6, the substrate layer 23 includes a sheet-like portion 231 and an annular portion 232 located on one side of the sheet-like portion 231, the annular portion 232 being provided at an edge of the sheet-like portion 231. The first avoiding hole 211 is formed in the sheet 231, and the sheet 231 is welded to the first plate 10. The setting of sheetlike portion 231 is convenient for improve the structural strength of annular portion 232, and simultaneously at sheetlike portion 231 and first plate body 10 welded connection's in-process, annular portion 232 can supply the border of sheetlike portion 231, the welding of being convenient for, and then has guaranteed substrate layer 23 and first plate body 10 welded reliability. Meanwhile, the fusion layer 24 is not damaged during the welding process of the backing layer 23 and the first board body 10. The substrate layer 23 of this embodiment is a solid structure.

As shown in fig. 2 and 6, the annular portion 232 is located between the sheet portion 231 and the fusion layer 24. The first avoidance hole 211, the inside of the annular portion 232, and the second avoidance hole 212 collectively form the avoidance space 21. Thus, it is ensured that the escape space 21 is formed sufficiently large to completely escape the fastener, and the annular portion 232, the sheet-like portion 231, and the fusion layer 24 do not interfere with the fastener. Preferably, the aperture of the first avoiding hole 211 and the aperture of the second avoiding hole 212 are both larger than the aperture of the fixing hole 11.

As shown in fig. 2, 4, 6 and 8, in order to ensure a good welding effect of the substrate layer 23 and the first plate body 10, the ratio of the thickness of the sheet-shaped portion 231 to the thickness of the annular portion 232 is between 3 and 4. Wherein the thickness of the sheet 231 is between 0.2mm and 0.8 mm. The thickness of the annular portion 232 is between 0.6mm and 3 mm.

As shown in fig. 4 and 5, the substrate layer 23 is bent, and the substrate layer 23 includes a first plate segment 31, a second plate segment 32 and a third plate segment 33 which are connected in sequence. Thus, the first plate section 31, the second plate section 32 and the third plate section 33 which are connected in sequence form the bending substrate layer 23, and the substrate layer 23 is matched with the outer surface of the skeleton 1, so that the arc-shaped concave surface 22 of the second plate body 20 can be better attached to the outer surface of the skeleton. The second relief hole 212 is provided on the first plate section 31 and the third plate section 33. The second avoidance hole 212 on the first plate section 31 and the second avoidance hole 212 on the third plate section 33 can better avoid the fastener, and the interference between the first plate section 31 and the fastener and the interference between the third plate section 33 and the fastener are avoided.

Of course, in other embodiments not shown in the figures, the second relief hole is provided on the first plate section or on the third plate section.

As shown in fig. 2, 4 and 6, the first plate 10 is bent, and the first plate 10 includes a fourth plate section 12, a fifth plate section 13 and a sixth plate section 14 connected in sequence. Like this, the fourth plate section 12, the fifth plate section 13 and the sixth plate section 14 that connect gradually form the first plate body 10 of form of buckling, on the one hand with the shape looks adaptation of substrate layer 23 for the arc concave surface 22 of second plate body 20 can be better laminated with the surface of skeleton, and on the other hand can reduce exterior space, is favorable to saving the growth space of skeleton 1. The fixing holes 11 are arranged on the fourth plate section 12 and the sixth plate section 14, the fourth plate section 12 is arranged corresponding to the first plate section 31, the fifth plate section 13 is arranged corresponding to the second plate section 32, and the sixth plate section 14 is arranged corresponding to the third plate section 33. The fixing hole 11 on the fourth plate section 12 and the fixing hole 11 on the sixth plate section 14 can better avoid the fastener, and the interference between the fourth plate section 12 and the sixth plate section 14 and the fastener is avoided.

Of course, in other embodiments not shown in the figures, the fastening holes are provided on the fourth plate section or on the sixth plate section.

As shown in fig. 1 and 5, in order to allow the bone plate assembly to be more reliably fixed to the bone 1, the fixing holes 11 include a plurality of fixing holes 11, and the plurality of fixing holes 11 are arranged at intervals on the first plate body 10.

As shown in fig. 2, 6 to 8, the escape space 21 includes a plurality of spaces. The plurality of escape spaces 21 are provided in one-to-one correspondence with the plurality of fixing holes 11. In this way, each avoiding space 21 can avoid each fixing hole 11, and the possibility of interference between the second plate body 20 and the fastener is effectively avoided.

As shown in fig. 4 and 6, the first plate 10 is made of a titanium alloy. The first plate body 10 of titanium alloy ensures sufficient structural strength of the bone plate assembly as a whole. The second plate body 20 has a porous structure. Thus, the second plate body 20 is integrated with the bone at the position of the fracture of the bone 1, the bone cells can grow in conveniently, the periosteum injury around the position of the fracture is reduced to the minimum, the surgical incision on the appearance of the position of the fracture of the bone 1 is small, and the fracture can heal quickly. The first plate body 10 is preferably a titanium alloy locking anatomic steel plate.

In the present embodiment, the porous structure forms a plurality of pores, similar to the trabecular bone structure in the related art. Trabecular bone in the related art is an extension of cortical bone within cancellous bone, i.e., trabecular bone is connected to cortical bone. It has irregular three-dimensional net structure in the cavity of bone sponge, such as loofah sponge-like or spongy, and has the function of supporting hematopoietic tissues.

As shown in fig. 4 and 6, the second plate body 20 is formed by processing through a 3D printing technology. Thus, the process for processing the second plate body 20 is simple, the processing period is short, and the manufacturing cost is low.

In the present embodiment, the thickness of the fused layer 24 is between 1mm and 3 mm.

In this embodiment, as shown in FIGS. 1-8, a portion of the process of making the bone plate assembly is as follows:

1. scanning the outer surface of the bone 1 at the location of the fracture;

2. reconstructing a skeleton three-dimensional digital model in a three-dimensional reconstruction mode;

3. bone reduction is carried out in a computer simulation mode;

4. extracting a bone anatomical curved surface containing a fracture area after bone reduction;

5. selecting a first plate body 10 which is matched relatively;

6. extracting an arc-shaped concave surface 22 on the outer surface of the bone 1 in contact with the second plate body 20;

7. when the gap between the first plate body 10 and the outer surface of the bone 1 is < 4mm, the second plate body 20 is designed with the inner surface (the side facing the bone 1) of the first plate body 10 as the outer surface of the second plate body 20 and the arc-shaped concave surface 22 as the inner surface of the second plate body 20.

8. The first plate body 10 and the second plate body 20 are welded together by means of laser welding. Wherein, when the clearance between the first plate body 10 and the outer surface of the skeleton 1 is less than 4mm, the mould for manufacturing the first plate body 10 is designed on the basis of the arc concave surface 22.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A bone plate assembly, comprising:

the first plate body (10), wherein a fixing hole (11) is formed in the first plate body (10);

the second plate body (20) is connected to the first plate body (10) in an overlapping mode, an avoiding space (21) is arranged at the position, corresponding to the fixing hole (11), of the second plate body (20), and an arc-shaped concave surface (22) is formed on one side, away from the first plate body (10), of the second plate body (20).

2. Bone plate assembly according to claim 1, characterized in that the second plate (20) comprises a substrate layer (23) and a fusion layer (24) superposed on one side of the substrate layer (23), the substrate layer (23) being located between the first plate (10) and the fusion layer (24), the arc-shaped concave surface (22) being located on the side of the fusion layer (24) remote from the substrate layer (23), the substrate layer (23) being provided with a first relief hole (211) corresponding to the fixing hole (11), the fusion layer (24) being provided with a second relief hole (212) at a position corresponding to the first relief hole (211).

3. Bone plate assembly according to claim 2, characterized in that the backing layer (23) is welded to the first plate body (10).

4. Bone plate assembly according to claim 2, characterized in that the substrate layer (23) comprises a plate (231) and an annular portion (232) on one side of the plate (231), the annular portion (232) being arranged at the edge of the plate (231), the first relief hole (211) being arranged on the plate (231), the plate (231) being welded to the first plate (10), the annular portion (232) being located between the plate (231) and the fusion layer (24), the first relief hole (211), the interior of the annular portion (232) and the second relief hole (212) together forming the relief space (21).

5. Bone plate assembly according to claim 4, characterised in that the ratio between the thickness of the blade (231) and the thickness of the ring (232) is between 3 and 4.

6. Bone plate assembly according to claim 2, characterized in that the backing layer (23) is arranged folded, the backing layer (23) comprising a first plate section (31), a second plate section (32) and a third plate section (33) connected in series, the second relief hole (212) being provided in the first plate section (31) and/or the third plate section (33).

7. The bone plate assembly according to claim 6, characterized in that the first plate body (10) is bent, the first plate body (10) comprises a fourth plate section (12), a fifth plate section (13) and a sixth plate section (14) which are connected in sequence, the fixing hole (11) is formed in the fourth plate section (12) and/or the sixth plate section (14), the fourth plate section (12) is arranged corresponding to the first plate section (31), the fifth plate section (13) is arranged corresponding to the second plate section (32), and the sixth plate section (14) is arranged corresponding to the third plate section (33).

8. Bone plate assembly according to claim 1, characterized in that the fixing holes (11) comprise a plurality, the fixing holes (11) being arranged at intervals on the first plate body (10).

9. The bone plate assembly according to claim 8, characterized in that the avoiding space (21) comprises a plurality of avoiding spaces (21), and a plurality of the avoiding spaces (21) are provided in one-to-one correspondence with a plurality of the fixing holes (11).

10. Bone plate assembly according to claim 1, characterized in that the first plate (10) is made of a titanium alloy; the second plate body (20) is of a porous structure.

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