Acetabular reconstruction prosthesis for treating bone defect of acetabular ischial region

Abstract

The utility model relates to an acetabulum reconstruction prosthesis used for treating bone defects of an acetabulum ischial area, a prosthesis body comprises a disc body and at least two supporting legs, one end of each supporting leg is connected with one side face of the disc body, and the multiple supporting legs are evenly distributed; the prosthesis body forms a bone trabecula structure and is provided with a plurality of pores; the disc body is used for well filling and covering a bone defect part of an ischium area, reconstructing the integrity of an acetabulum anatomical structure and providing a good support for the area of an acetabular cup; the multiple supporting legs are used for being implanted into cancellous bones of acetabular ischial bones, tamping of the cancellous bones is facilitated, good rotation resistance is achieved, the initial stability, firmness and reliability of fixation are effectively improved, and the biomechanical strength is improved; the prosthesis body is provided with a plurality of pores, so that the biocompatibility can be improved, the bone ingrowth capability can be improved, and the integration of the prosthesis body and surrounding bone tissues can be promoted; the prosthesis body is reasonable in structure and suitable for treating bone defects in the acetabular ischial area.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an acetabulum reconstruction prosthesis for treating bone defects in the acetabulum sciatic region. Background Art

[0002] At present, acetabular bone defects are still difficult to repair in total hip revision surgery. The main treatment strategy for acetabular bone defects is to use supporting materials to restore the original anatomical structure of the acetabulum, and to reconstruct the acetabular "ring" or "support point" through trabecular porous metal prostheses, which helps the acetabular cup to obtain good initial stability and reconstruct the rotation center of the hip joint.

[0003] The porous tantalum metal acetabular reconstruction prostheses used in the prior art often have the defects of poor structural rationality, unstable initial fixation, poor mechanical strength and limited bone ingrowth ability. Summary of the invention

[0004] In view of at least one of the problems in the above-mentioned prior art, the purpose of the present invention is to provide an acetabular reconstruction prosthesis for treating bone defects in the sciatic region of the acetabulum, so that the prosthesis has a reasonable structure, effectively increases the reliability of initial fixation, and improves the mechanical strength and bone ingrowth ability.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An acetabular reconstruction prosthesis for treating bone defects in the acetabulum ischial region comprises a prosthesis body, wherein the prosthesis body comprises a disc body and at least two supporting feet, one end of each supporting foot is connected to a side surface of the disc body, and a plurality of supporting feet are evenly distributed; the prosthesis body forms a trabecular structure.

[0007] Preferably, the supporting foot is configured as a conical column, and a bottom surface of the conical column is connected to a side surface of the disk body.

[0008] Preferably, the supporting feet are configured as conical columns.

[0009] Preferably, the disk body is configured as a circular disk or an elliptical disk.

[0010] Preferably, the supporting feet are configured as inclined columns inclined toward the outside.

[0011] Preferably, the angles between each of the supporting legs and the disk body are equal.

[0012] Preferably, two supporting legs are provided.

[0013] Preferably, the prosthesis body is provided with a plurality of pores, and the pores are arranged as honeycomb-shaped holes.

[0014] Preferably, the prosthesis body is configured as a tantalum metal part.

[0015] The utility model adopts the above technical solution, which has the following advantages:

[0016] 1. The utility model provides an acetabular reconstruction prosthesis for treating bone defects in the acetabulum sciatic region. The trabecular structure formed in the prosthesis body includes a disc body and a plurality of supporting legs. The disc body is used to well fill and cover the bone defects in the sciatic region, reconstruct the integrity of the anatomical structure of the acetabulum, and provide good support for the acetabular cup in this area; the plurality of supporting legs are used to be implanted in the cancellous bone of the acetabulum and the sciatic region, which is beneficial to compacting the cancellous bone and has good anti-rotational properties, effectively increasing the initial stability and firm reliability of fixation, and improving biomechanical strength; the prosthesis body is provided with a plurality of pores, which can improve biocompatibility, enhance bone ingrowth ability, and promote the integration of the prosthesis body with surrounding bone tissue; the prosthesis body has a reasonable structure and is suitable for treating bone defects in the acetabulum sciatic region.

[0017] 2. The acetabular reconstruction prosthesis for treating bone defects in the acetabulum sciatic region provided by the utility model can be made of tantalum metal, so that the prosthesis body has better biocompatibility, biomechanical strength, bone ingrowth ability and corrosion resistance, and is more conducive to achieving good biological reconstruction of bone defects in the acetabulum sciatic region. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an acetabular reconstruction prosthesis for treating bone defects in the acetabular sciatic region provided by an embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the structure of an acetabulum reconstruction prosthesis in use for treating bone defects in the acetabulum sciatic region provided by one embodiment of the utility model.

[0020] Reference numerals in the figures:

[0021] 100 is the acetabulum and ischium, 1 is the prosthesis body, 110 is the disc body, 120 is the supporting foot, and 130 is the hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "assembly", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The utility model provides an acetabular reconstruction prosthesis for treating bone defects in the acetabulum sciatic region, wherein the prosthesis body comprises a disc body and a plurality of supporting legs, wherein the disc body can well fill and cover the bone defects in the sciatic region, and the plurality of supporting legs are implanted in the cancellous bone of the acetabulum sciatic region, thereby consolidating the cancellous bone and having good anti-torsion property; thus, the structure of the prosthesis body is reasonable, and the reliability of initial fixation is effectively increased, and the mechanical strength is improved; and the prosthesis body is provided with a plurality of pores, which is conducive to improving the bone ingrowth ability.

[0026] Below, the embodiments of the utility model are described in detail with reference to the accompanying drawings.

[0027] Example

[0028] like Figure 1 As shown, the present embodiment provides an acetabular reconstruction prosthesis for treating bone defects in the sciatic region of the acetabulum, comprising a prosthesis body 1, wherein the prosthesis body 1 comprises a disc body 110 and at least two supporting legs 120, wherein one end of the supporting leg 120 is connected to a side surface of the disc body 110, and the plurality of supporting legs 120 are evenly distributed; the prosthesis body 1 forms a trabecular structure, and the trabecular structure refers to a loose and porous structure that is structurally like trabeculae, which are interconnected and communicated with each other.

[0029] Please refer to Figure 1 and Figure 2The acetabular reconstruction prosthesis for treating bone defects in the acetabulum and ischium region of the present embodiment has a reasonable structure and can well fill and cover the bone defects in the ischium region through the disc body 110, reconstruct the integrity of the anatomical structure of the acetabulum, and provide good support for the acetabular cup in this area; during the process of implanting the supporting feet 120 into the cancellous bone of the acetabulum and ischium 100, it is conducive to a good press fit between the supporting feet 120 and the cancellous bone, further consolidating the cancellous bone, and effectively increasing the reliability of initial fixation; due to further bone ingrowth, the multiple supporting feet 120 can effectively play an anti-rotation role; at the same time, it can also cooperate with the use of bone cement or artificial bone to further improve the initial stability and mechanical strength; a plurality of pores 130 are provided on the prosthesis body 1, which is conducive to improving the bone ingrowth ability.

[0030] like Figure 1 As shown, the upper and lower sides of the tray body 110 can be respectively set as planes, and the top end surface of the support foot 120 can be connected to the lower side of the tray body 110. A plurality of support feet 120 can be symmetrically distributed on the left and right sides of the central axis of the tray body 110.

[0031] Specifically, the support foot 120 is configured as a conical column, the bottom surface of the conical column is connected to one side surface of the disc body 110, so that one end of the top surface of the support foot 120 is implanted in the cancellous bone of the acetabulum 100. Since the top surface of the support foot 120 is located on one side of the cone angle of the conical column, the top surface area of ​​the support foot 120 is smaller than the bottom surface area, so that the support foot 120 can be smoothly and effectively implanted in the cancellous bone of the acetabulum 100 through its pointed top surface end, which further facilitates the support foot 120 to be well pressed into the cancellous bone and is more conducive to compacting the cancellous bone.

[0032] Moreover, the supporting foot 120 can be configured as a conical column to facilitate processing and connection with the disk body 110 .

[0033] Specifically, the disk body 110 is configured as a circular disk or an elliptical disk, which facilitates the processing of the disk body 110 and the connection with the supporting legs 120 .

[0034] The supporting foot 120 is configured as an inclined column inclined toward the outside, which helps the supporting foot 120 to stably support the disk body 110 .

[0035] The included angles between each support leg 120 and the disc body 110 are all equal, which is conducive to the formation of a symmetrical structure by the multiple support legs 120, thereby improving the firmness and stability of the support disc body 110 and the implanted cancellous bone.

[0036] Two supporting feet 120 may be provided, and the two supporting feet 120 are evenly and symmetrically connected to the disc body 110, which facilitates the processing of the prosthesis body 1 and ensures that the prosthesis body 1 forms a balanced and stable trabecular structure.

[0037] Specifically, the pores 130 are configured as honeycomb holes to ensure the porosity of the prosthesis body 1 to form a trabecular structure, so as to be close to the structure of cancellous bone, facilitate the growth of new bone tissue, and promote the integration of the prosthesis body 1 with the surrounding bone tissue.

[0038] The prosthesis body 1 is configured as a tantalum metal part, and its material structure is close to that of cancellous bone, so that the porosity of the prosthesis body 1 as a whole is as high as 75-85%, so that the prosthesis body 1 forms a good trabecular structure, ensuring that new bone tissue grows into the prosthesis body 1, further promoting the integration of the prosthesis body 1 and the surrounding bone tissue, and realizing a good biological reconstruction of the bone defect in the acetabulum sciatic region.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An acetabular reconstruction prosthesis for treating bone defects in the acetabular sciatic region, characterized in that: The invention comprises a prosthesis body (1), wherein the prosthesis body (1) comprises a plate body (110) and at least two supporting feet (120), one end of each supporting foot (120) is connected to a side surface of the plate body (110), and a plurality of supporting feet (120) are evenly distributed; the prosthesis body (1) forms a trabecular structure.

2. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to claim 1, characterized in that: The supporting foot (120) is configured as a conical column, and the bottom surface of the conical column is connected to one side surface of the disk body (110).

3. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to claim 2, characterized in that: The supporting foot (120) is configured as a conical column.

4. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to claim 1, characterized in that: The disk body (110) is configured as a circular disk or an elliptical disk.

5. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to claim 1, characterized in that: The supporting foot (120) is configured as an inclined column inclined toward the outside.

6. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to claim 5, characterized in that: The included angles between each of the supporting legs (120) and the disk body (110) are all equal.

7. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to claim 1, characterized in that: Two supporting legs (120) are provided.

8. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to claim 1, characterized in that: The prosthesis body (1) is provided with a plurality of pores (130), and the pores (130) are configured as honeycomb-shaped holes.

9. The acetabular reconstruction prosthesis for treating acetabular sciatic region bone defects according to any one of claims 1 to 8, characterized in that: The prosthesis body (1) is configured as a tantalum metal part.

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