Embedded biological knee patella prosthesis

Abstract

The utility model relates to the technical field of joint prostheses, and discloses an embedded biological knee patella prosthesis which comprises a prosthesis block, a connecting block is fixedly connected to the upper surface of the prosthesis block, a plurality of mounting columns are fixedly connected to the upper surface of the connecting block, the mounting columns are perpendicular to the connecting block, a plurality of first through holes are formed in the outer wall of the connecting block, and a plurality of second through holes are formed in the outer wall of the connecting block. A plurality of second through holes are formed in the outer wall of the mounting column and are uniformly distributed in the outer wall of the mounting column, and a buffer assembly is arranged in the prosthesis block. According to the patella prosthesis, the contact between the prosthesis and the femoral condyle and the contact between the prosthesis and the knee joint are buffered, the hardness of the prosthesis is reduced, the discomfort caused by large impact force when a user uses the prosthesis to do large-force movement is reduced, the comfort degree of the user when the user uses the patella prosthesis is improved, and the user experience is improved. And different activity requirements can be better met, so that more stable and more comfortable support can be provided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of joint prosthesis, especially to a kind of embedded biological knee joint patella prosthesis. BACKGROUND

[0002] Biological knee joint is one of the largest and most complex joints in human body, which is located between femoral condyle and tibial condyle, and in front of patella. The main function of knee joint is to allow lower limbs to flex, which is of great significance to daily function and mechanical efficiency of human movement. In addition, knee joint also has certain rotation, adduction and abduction ability. Patella, also known as knee bone, is the largest sesamoid bone in human body. Patella, together with femur and tibia, participates in the composition of knee joint, and can protect knee joint, especially the lower end articular surface of femur and femoral condyle. In some cases, biological knee joint needs to be installed with patella prosthesis, which is usually caused by damage or dysfunction of patella. The installation of patella prosthesis is to restore the normal anatomical structure of knee joint, relieve pain and improve function.

[0003] According to the patent with publication number CN219000737U, an embedded biological knee joint patella prosthesis is disclosed. The prosthesis increases the contact area between the prosthesis body and the resected patella, thereby improving the stability of the prosthesis body and the patella, and avoiding the occurrence of more complications in the later stage.

[0004] The above-mentioned patella prosthesis can improve the stability of the contact between the patella prosthesis and the resected patella. In the prior art, the patella prosthesis is usually a solid prosthesis, which is hard when contacting the femoral condyle and knee joint. When the user uses the patella prosthesis for activities such as walking and running, the prosthesis has weak buffering force between the femoral condyle and knee joint, which increases the discomfort of the user during use and makes it difficult to withstand the impact force caused by large movements, thereby making it inconvenient to perform large activities. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the shortcomings in the prior art and provides an embedded biological knee joint patella prosthesis.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of embedded biological knee patella prosthesis, including prosthesis block, the upper surface of the prosthesis block is fixedly connected with connecting block, the upper surface of the connecting block is fixedly connected with multiple installation columns, multiple The installation column and connecting block are perpendicular to each other, the outer wall of the connecting block is equipped with multiple first through holes, the outer wall of the installation column is equipped with multiple second through holes, multiple The second through hole is evenly distributed on the outer wall of installation column, the inside of the prosthesis block is provided with buffer assembly.

[0007] As further description of the above technical solution:

[0008] The buffer assembly includes a liquid injection groove, and the liquid injection groove is arranged in the interior of the prosthesis block.

[0009] As further description of the above technical solution:

[0010] Two flow-through grooves are arranged in the interior of the prosthesis block, and the flow-through grooves are arranged on both sides of the liquid injection groove.

[0011] As further description of the above technical solution:

[0012] The interior of the liquid injection groove is provided with a fluid, and the fluid is a high-viscosity silicone oil material.

[0013] As further description of the above technical solution:

[0014] The outer wall of the prosthesis block is provided with a curved surface, and the upper surface of the connecting block is fixedly connected with multiple first protrusions.

[0015] As further description of the above technical solution:

[0016] Multiple first protrusions are symmetrically distributed, and multiple second protrusions are arranged near the four corners of the outer wall of the installation column.

[0017] As further description of the above technical solution:

[0018] The upper surface of the prosthesis block is provided with a wear-resistant coating, and the wear-resistant coating is a ceramic coating material.

[0019] The utility model has the following beneficial effects:

[0020] The utility model discloses a buffer assembly is set up, and the knee joint patella prosthesis is added with the function of buffering the contact between the prosthesis and femoral condyle and knee joint when using the prosthesis, which reduces the hardness of the prosthesis, helps to reduce the discomfort of the user when using the prosthesis to carry out the movement of greater force due to greater impact force, improves the comfort of the user when using the patella prosthesis, makes it better to adapt to different activity requirements, thereby providing more stable and comfortable support. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a whole structure schematic diagram is provided;

[0022] Figure 2 The utility model discloses a first bump structure schematic diagram is provided;

[0023] Figure 3 The utility model discloses a connecting block structure schematic diagram is provided;

[0024] Figure 4 The utility model discloses an installation column structure schematic diagram is provided;

[0025] Figure 5 The utility model discloses a liquid injection groove structure schematic diagram is provided;

[0026] Figure 6 The utility model discloses a connecting column structure schematic diagram is provided.

[0027] Legend:

[0028] 1, prosthesis block;2, connecting block;3, installation column;4, first through -hole;5, second through -hole;6, cambered surface;7, first bump;8, second bump;9, liquid injection groove;10, flow groove;11, fluid;12, wear -resisting coating;13, connecting column. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0030] As shown in the accompanying drawings Figures 1-6As shown in the utility model provides an embodiment: a kind of embedded biological knee patella prosthesis, including prosthesis block 1, the upper surface of prosthesis block 1 is fixedly connected with connecting block 2, the upper surface of connecting block 2 is fixedly connected with multiple installation columns 3, multiple installation columns 3 are perpendicular to connecting block 2, multiple first through holes 4 are arranged in the outer wall of connecting block 2, multiple second through holes 5 are arranged in the outer wall of installation column 3, multiple second through holes 5 are evenly distributed on the outer wall of installation column 3, the inside of prosthesis block 1 is provided with buffer assembly, installation column 3 is positioned in the inside of patella of being sectioned, first through hole 4 is conducive to the connection of embedded connecting block 2 and human bone tissue, to promote the growth of bone tissue, improve the stability of prosthesis installation, second through hole 5 is convenient for promoting the growth of bone tissue in the inside of installation column 3, improve the stability and biocompatibility of installation column 3 in prosthesis.

[0031] As shown in the accompanying drawings Figure 5 Buffer assembly includes injection tank 9, injection tank 9 is arranged in the inside of prosthesis block 1, the profile of injection tank 9 is set as arc, two flow-through grooves 10 are arranged in the inside of prosthesis block 1, flow-through groove 10 is arranged at the two sides of injection tank 9, the profile of flow-through groove 10 is set as arc, fluid 11 is arranged in the inside of injection tank 9, fluid 11 is high-viscosity silicone oil material, the outer wall of prosthesis block 1 is provided with arc surface 6, injection tank 9 is used for the injection of high-viscosity silicone oil, and the flow-through groove 10 on the two sides is conducive to the flow of high-viscosity silicone oil, so as to buffer the contact and sliding of prosthesis block 1 and knee joint and femoral condyle, reduce the hardness of prosthesis block 1, high-viscosity silicone oil is a commonly used filling fluid 11, has excellent stability and chemical inertness, it is not easy to volatilize, not easy to oxidize, and has no obvious irritation and toxicity to human tissue, and the silicone oil in the filling cavity 11 can maintain long-term stability, not easy to leak, so as to ensure that the hardness and shape of prosthesis remain stable for a long time, arc surface 6 is convenient for reducing the risk of human tissue being scratched by the sharp angle of prosthesis block 1.

[0032] As shown in the accompanying drawings Figure 2 The upper surface of connecting block 2 is fixedly connected with multiple first lugs 7, multiple first lugs 7 are symmetrically distributed, multiple second lugs 8 are arranged on the outer wall of installation column 3 close to four corners, first lug 7 and second lug 8 are both silicone material, first lug 7 helps to improve the friction of connecting block 2, and second lug 8 helps to improve the friction of installation column 3.

[0033] As shown in the accompanying drawings Figure 1 The upper surface of prosthesis block 1 is provided with wear-resistant coating 12, wear-resistant coating 12 is ceramic coating material, ceramic coating has excellent wear resistance, in the knee joint movement, friction will be generated between joint surface, and ceramic coating can effectively reduce this friction, thereby reducing the wear rate, ceramic coating also has good biocompatibility, and has good compatibility with human tissue, not easy to cause rejection reaction or infection.

[0034] As shown in the accompanying drawings, the upper surface of the mounting column 3 is fixedly connected with a connecting column 13, which facilitates the stability of the mounting column 3 after installation. Figure 6

[0035] Working principle: in use, the patellar surface of the section is slotted, and then the mounting column 3 is installed on the patellar surface of the section together with the connecting column 13, so that the plurality of second protrusions 8 are in the inner wall of the slot, improving the stability of the installation of the mounting column 3, and then the connecting block 2 is on one side of the patellar surface of the section, and the friction between the connecting block 2 and the patellar surface of the section is increased by the arrangement of the plurality of first protrusions 7. At this time, the prosthesis block 1 is installed on the side of the femoral condyle and the knee joint, and when the user is in motion, the prosthesis block 1 will slide on the side of the femoral condyle and the knee joint. By extruding one side of the prosthesis block 1 during the sliding process, the pressure causes the inner recess of the liquid injection groove 9, and in the extrusion process, the fluid 11 inside the liquid injection groove 9 flows into the inner part of the flow channel 10 which is not filled with fluid 11. According to the pressure received by the prosthesis block 1, the fluid 11 flows back and forth during the process, which facilitates the buffering of the impact force received by the prosthesis block 1, thereby reducing the hardness of the prosthesis block 1.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.​

Claims

1. An embedded type biological knee patella prosthesis, comprising a prosthesis block (1), the upper surface of the prosthesis block (1) is fixedly connected with a connecting block (2), the upper surface of the connecting block (2) is fixedly connected with a plurality of mounting columns (3), the plurality of mounting columns (3) are perpendicular to the connecting block (2), characterized in that: The outer wall of the connecting block (2) is provided with a plurality of first through holes (4), the outer wall of the mounting column (3) is provided with a plurality of second through holes (5), the plurality of second through holes (5) are uniformly distributed on the outer wall of the mounting column (3), and the inside of the prosthesis block (1) is provided with a buffer assembly.

2. The intercalary biologic knee patellar prosthesis of claim 1, wherein: The buffer assembly comprises a liquid injection groove (9) which is arranged in the inside of the prosthesis block (1), and the cross section of the liquid injection groove (9) is arranged in an arc shape.

3. The intercalary biologic knee patellar prosthesis of claim 2, wherein: The inside of the prosthesis block (1) is provided with two flow-through grooves (10), the flow-through grooves (10) are arranged on both sides of the liquid injection groove (9), and the cross section of the flow-through grooves (10) is arranged in an arc shape.

4. The intercalary biologic knee patellar prosthesis of claim 2, wherein: The inside of the liquid injection groove (9) is provided with a fluid (11), and the fluid (11) is made of high-viscosity silicone oil material.

5. The intercalary biologic knee patellar prosthesis of claim 1, wherein: The outer wall of the prosthesis block (1) is provided with an arc surface (6), and the upper surface of the connecting block (2) is fixedly connected with a plurality of first protrusions (7).

6. The intercalary biologic knee patellar prosthesis of claim 5, wherein: The plurality of first protrusions (7) are symmetrically distributed, the outer wall of the mounting column (3) is provided with a plurality of second protrusions (8) near four corners, and the first protrusions (7) and the second protrusions (8) are both made of silica gel material.

7. The intercalary bio-knee patellar prosthesis according to claim 1, characterized in that: The upper surface of the prosthesis block (1) is provided with a wear-resistant coating (12), the wear-resistant coating (12) is made of ceramic coating material, and the upper surface of the mounting column (3) is fixedly connected with a connecting column (13).

Images