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Acetabular roof prosthesis and making method thereof

A manufacturing method and technology of acetabular cap, applied in the direction of prosthesis, hip joint, additive manufacturing, etc., can solve the problems of long learning curve, complicated operation, large trauma, etc., and achieve the effect of low risk, simple operation and less bleeding

Pending Publication Date: 2020-02-07
重庆英泰帝克科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, PAO surgery requires bone extraction from the human body, and requires osteotomy and trimming to achieve a concentric relationship with the femur or acetabulum. The operation is complex, traumatic, and risky, with a long learning curve and a complication rate as high as 15%.

Method used

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  • Acetabular roof prosthesis and making method thereof
  • Acetabular roof prosthesis and making method thereof
  • Acetabular roof prosthesis and making method thereof

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Embodiment Construction

[0064] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0065] Such as Figure 1-15As shown, an acetabular cap prosthesis 9 of the present invention includes an acetabular top 1 and an acetabular side 2, and the acetabular top and acetabular side are integrally arranged, both of which are porous tantalum structures that adopt 3D printing:

[0066] Among them, the top of the socket has an arc-shaped groove 3 that is concave inward and conforms to the shape of the femoral head 7. The femoral head forms a rotation fit through the arc-shaped groove to realize articulation, improve the coverage of the acetabulum to the femoral head, and provide support for the femoral head. More mechanical support and reconstruction of the mechanical structure can effectively terminate or prevent the progression of osteoarthritis;

[0067] Wherein, the side of the socket has an articulation surface 4 that conforms t...

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Abstract

The invention discloses an acetabular roof prosthesis and a making method thereof, and belongs to the technical field of prosthesis replacement. The acetabular roof prosthesis comprises a acetabulum top part and an acetabulum side part which is integrally arranged with the acetabulum top part, the acetabulum top part is provided with an arc-shaped groove which is inward-concave and conformable tothe femoral head, the acetabulum side part is provided with a joint surface which is conformable to the outer surface of the hip bone, the acetabulum side part is provided with screw through-holes forhip bone fixation, the acetabulum top part and the acetabulum side part are both in 3D-printed porous tantalum structure, and through-hole reinforcing structures are arranged in the screw through-holes. The concentric circle relation between the acetabulum and the femoral head is adjusted by combining 3D printing technology and femoral head plastic operation, thus operative indications of the operative method is wider than that of PAO; meanwhile, the method has simple operative procedures, can realize a high goodness of fit with the femur or the acetabulum without trimming and osteotomy, so that the method has the advantages of short operation time, less bleeding, small risk, etc.; in addition, the invention adopts the porous tantalum structure, which is beneficial to bone ingrowth to form a reliable connection, and improves the osseointegration strength.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an acetabular cap prosthesis and a manufacturing method thereof. Background technique [0002] The hip joint is composed of the femoral head and the acetabulum. It is a ball-and-socket joint and is a typical rod-and-socket joint. Hip arthritis usually refers to a type of osteoarthritic disease characterized by degeneration of articular cartilage or changes in bone structure due to long-term unbalanced load-bearing on the hip joint surface. The main manifestations are pain on the lateral side of the hip and groin (which can radiate to the knee), swelling, joint effusion, cartilage wear, bone spur hyperplasia, joint deformation, limited hip internal rotation and extension, inability to walk or even bed rest. wait. [0003] The most classic surgical method for severe hip joint disease is Bernese periacetabular osteotomy PAO, which was first reported by Ganz et ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/32A61F2/30
CPCA61F2/30749A61F2/30942A61F2/32A61F2002/30943A61F2002/30948A61F2002/30985A61F2310/00131
Inventor 何鹏谭才华朱洪利
Owner 重庆英泰帝克科技有限公司
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