Acetabular cup thermal spraying processing tool

Abstract

The utility model relates to an acetabular cup thermal spraying processing tool which comprises an acetabular cup body and further comprises plugs, a fastening piece, a supporting piece and a connecting screw rod, the acetabular cup body is in a bowl shape, the outer surface of the fastening piece is hemispherical, the acetabular cup body is inversely buckled on the fastening piece, the plugs are installed between the acetabular cup body and the fastening piece, and the supporting piece is connected with the connecting screw rod. The plug movably penetrates through an acetabular cup hole in the acetabular cup body, a mounting hole is formed in the top of the fastener, the end of the connecting screw penetrates through the mounting hole and is connected with a connecting hole of the acetabular cup body, and the top of the supporting piece is detachably connected with the mounting hole. The plug is used for plugging the acetabular cup hole of the acetabular cup body, a coating is prevented from entering the inner side and polluting the smooth surface, meanwhile, the fastener serves as a lining and provides support for the plug, heat dissipation is enhanced in the thermal spraying process, it is guaranteed that the acetabular cup body cannot discolor or deform, and the tool is easy to assemble and high in operation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device tooling, in particular to a thermal spraying processing tooling for an acetabulum cup. Background Art

[0002] An acetabular cup is a prosthetic component used in hip replacement surgery. It is usually made of metal, plastic or ceramic and is used to replace the part of the acetabulum that has been damaged due to osteoarthritis, hip head necrosis or severe fractures. An artificial joint coating is a coating applied to the surface of an artificial joint to improve the wear resistance and biocompatibility of the artificial joint. These coatings are usually made of biocompatible materials such as titanium or hydroxyapatite.

[0003] In order to meet the use requirements of the acetabular outer cup, spraying is required after the acetabular outer cup is completed. At present, the spraying process is mainly divided into two steps: the first step is to sandblast the acetabular outer cup through a wear-resistant protective tooling to increase the roughness of the coating surface; the second step is to spray titanium on the acetabular outer cup through a high temperature resistant protective tooling to achieve the effect of plasma spraying. The existing tooling, such as application number 201921344699.8, discloses a spraying protective tooling for the acetabular outer cup. This tooling does not consider the stability of the acetabular cup hole sealing on the acetabular cup. During spraying, the coating is easy to enter the inside and contaminate the smooth surface of the inner side of the acetabular cup. There is also a lack of internal support structure for the acetabular cup. During thermal spraying, heat accumulates in the hollow position on the inner side of the acetabular cup, which is prone to discoloration and deformation over time, so further improvement is needed. Utility Model Content

[0004] Based on this, it is necessary to provide a thermal spraying processing tool for acetabular cup to address the above problems.

[0005] A thermal spraying processing tool for an acetabular cup comprises an acetabular cup body, a plug, a fastener, a support member and a connecting screw, wherein the acetabular cup body is bowl-shaped, the outer surface of the fastener is hemispherical, the acetabular cup body is inverted on the fastener, a plurality of the plugs are installed between the acetabular cup body and the fastener, the plugs movably pass through the acetabular cup hole on the acetabular cup body, a mounting hole is provided on the top of the fastener, the end of the connecting screw passes through the mounting hole and is connected to the connecting hole of the acetabular cup body, and the top of the support member is detachably connected to the mounting hole.

[0006] Preferably, an annular groove is provided on the edge of the fastener, and the edge of the acetabulum body is clamped in the annular groove.

[0007] Preferably, an adhesive tape is attached to the inner side of the acetabular cup body.

[0008] Preferably, the adhesive tape is a high temperature adhesive tape or a wear-resistant adhesive tape.

[0009] The utility model is beneficial in that the acetabular cup hole of the acetabular cup body is sealed with a plug to prevent the coating from entering the inner side and contaminating the smooth surface. At the same time, the fastener serves as an inner lining to provide support for the plug and enhances heat dissipation during the thermal spraying process to ensure that the acetabular cup body will not change color or deform. The tooling assembly is simple and the operation efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of a thermal spraying processing tool for an acetabular cup according to one embodiment;

[0011] Figure 2 A schematic top view of a thermal spraying processing tool for an acetabular cup;

[0012] Figure 3 for Figure 2 AA section view;

[0013] Figure 4 It is a three-dimensional schematic diagram of the acetabular cup body. DETAILED DESCRIPTION

[0014] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0015] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0017] like Figures 1 to 4As shown, a thermal spraying processing tool for an acetabular cup includes an acetabular cup body 100, a plug 1, a fastener 2, a support member 3 and a connecting screw 4. The acetabular cup body 100 is bowl-shaped, and the outer surface of the fastener 2 is hemispherical. The acetabular cup body 100 is buckled on the fastener 2, and a plurality of the plugs 1 are installed between the acetabular cup body 100 and the fastener 2. The plug 1 movably passes through the acetabular cup hole 101 on the acetabular cup body 100, and the top of the fastener 2 is provided with a mounting hole 21. The end of the connecting screw 4 passes through the mounting hole 21 and is connected to the connecting hole 102 of the acetabular cup body 100. The top of the support member 3 is detachably connected to the mounting hole 21. Specifically, in this embodiment, when assembling the tooling, we first assemble the connecting screw 4 in the mounting hole 21 of the fastener 2, and the end of the connecting screw 4 is blocked by the inner wall of the mounting hole 21 to prevent the connecting screw 4 from being separated from the upper end of the mounting hole 21. The connecting screw 4 is threadedly connected to the connecting hole 102 at the top of the mortar cup body 100, and then the support 3 is used to connect with the mounting hole 21 of the fastener 2, the connecting screw 4 is blocked in the mounting hole 21, and the fastener 2 is clamped in the middle. Further, we set the outer surface of the fastener 2 to be hemispherical, which is used to match the inner side of the bowl-shaped mortar cup body 1, not only as a support for the plug 1, so that the plug 1 can extend to the outside of the mortar cup body 1, and fill the mortar cup hole 101, to prevent the paint from entering the inner side of the mortar cup body 100 from the mortar cup hole 101 during spraying, causing the inner surface to become rough, which does not meet the quality requirements for use. At the same time, the fastener 2 matches the inner side of the acetabular cup body 100. Because it is made of metal, it can absorb the heat dissipated by the acetabular cup body 100 during the thermal spraying process, and timely conduct this part of the heat to avoid the acetabular cup body 100 being deformed and discolored during the spraying process, thereby ensuring that the processing quality of the acetabular cup body 100 meets the standard. During thermal spraying, the outer surface of the acetabular cup body 100 can be thermally sprayed by rotating or displacing the support member 3. The spraying can be done manually or by mechanical automation, which is not specifically limited here.

[0018] like Figure 3 As shown, the edge of the fastener 2 is provided with an annular groove 22, and the edge of the acetabular body 100 is clamped in the annular groove 22, which plays a limiting and sealing role, thereby preventing the paint from penetrating into the inner side from the connection between the fastener 2 and the acetabular body 100 during spraying, thereby enhancing the sealing of the inner side of the acetabular body 100.

[0019] Specifically, adhesive tape is attached to the inner side of the mortar cup body 100. The adhesive tape is high temperature adhesive tape or wear-resistant adhesive tape. The plug 1 can be fixed by the adhesive tape. Wear-resistant adhesive tape is suitable for sandblasting roughening operations, and high temperature adhesive tape is suitable for plasma spraying operations.

[0020] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A thermal spraying tool for an acetabular cup, comprising an acetabular cup body, characterized in that: It also includes a plug, a fastener, a support member and a connecting screw. The acetabular body is bowl-shaped, the outer surface of the fastener is hemispherical, the acetabular body is inverted on the fastener, and a plurality of plugs are installed between the acetabular body and the fastener. The plug movably passes through the acetabular hole on the acetabular body. A mounting hole is provided on the top of the fastener. The end of the connecting screw passes through the mounting hole and is connected to the connecting hole of the acetabular body. The top of the support member is detachably connected to the mounting hole.

2. A thermal spraying tool for acetabular cup according to claim 1, characterized in that: The edge of the fastener is provided with an annular groove, and the edge of the acetabulum body is clamped in the annular groove.

3. The acetabular cup thermal spraying tooling according to claim 1, characterized in that: The inner side of the acetabular cup body is attached with adhesive tape.

4. A thermal spraying tool for acetabular cup according to claim 3, characterized in that: The adhesive tape is a high temperature adhesive tape or a wear-resistant adhesive tape.

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