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An assembled acetabular reconstruction implant

An assembled and acetabular technology, applied in the direction of acetabular recess, joint implants, joint implants, etc., can solve the problems of long-term fracture, lack of placement operation, and difficult implantation, so as to achieve enhanced stability, Simplify the operation process and increase the overall stability

Active Publication Date: 2022-02-08
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current total hip revision prosthesis does not avoid the situation that it is difficult to implant during the operation, especially in the presence of large defects of the acetabular roof, pubic ramus, and ischial ramus, which require the combined use of acetabular cups, mesh cages, and reinforcing blocks etc., the connection between the two mostly depends on bone cement fixation
Moreover, the existing mesh cage is designed as non-biological fixation, so there is a risk of implantation difficulties and long-term fracture
At present, there is no design that is easy to place and operate, and can improve the overall stability

Method used

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  • An assembled acetabular reconstruction implant
  • An assembled acetabular reconstruction implant
  • An assembled acetabular reconstruction implant

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Embodiment Construction

[0025] Revision total hip arthroplasty is the best way to solve the loosening of total hip joint prosthesis, but reconstruction of the acetabular part during operation is extremely complicated and difficult due to bone defect and osteolysis. Currently existing technologies include huge acetabular cups, reinforcing blocks, and mesh cages, all of which are difficult to reconstruct the composite defect of the pubic ramus and ischial ramus. The non-biological fixation of the mesh cage is loosened and broken in the long term, and the combined use depends on bone cement fixation. And various problems such as difficulty in placement. In order to solve such problems, the present invention designs an assembled acetabular reconstruction implant. Its multiple components can be placed separately and then connected into a whole, which greatly simplifies the operation process and avoids the difficulty of placement. Condition. The rough surface design and the design of expansion screw and f...

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Abstract

The present invention provides an assembled acetabular reconstruction implant, which includes an acetabular cup with special-shaped holes, pads, pads, expansion screws, fixing cones, covers, locking nails, guide sleeves, and drivers. Assembled and used together, the connection is locked into an integrated acetabular prosthesis system, which is used in complex acetabular revision surgery. The present invention tightly combines the various parts of the revised acetabular prosthesis system by means of assembly, and then connects and locks after implantation respectively, which simplifies the operation process, facilitates installation and implantation, and avoids problems caused by mismatching shapes of certain parts. The overall difficulty of placement, the modular design of this system greatly simplifies the operation process, avoids the difficulty of placement, improves the overall mechanical fixation strength, and forms good bone contact, initial stability and placement flexibility .

Description

technical field [0001] The invention belongs to the technical field of a special prosthesis system for reconstructing stability and continuity used in the field of complex total hip joint revision, in particular to an assembled acetabular reconstruction implant. Background technique [0002] As an effective means of treating loosening after hip arthroplasty, total hip arthroplasty has achieved good results. However, the current total hip revision prosthesis does not avoid the situation that it is difficult to implant during the operation, especially in the presence of large defects of the acetabular roof, pubic ramus, and ischial ramus, which require the combined use of acetabular cups, mesh cages, and reinforcing blocks etc., the connection between the two is mostly fixed by bone cement. Moreover, the existing mesh cage is designed as a non-biological fixation, which has difficulty in implantation and the risk of long-term fracture. At present, there is no design that is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/30A61F2/34
CPCA61F2/30749A61F2/34A61F2002/3085A61F2002/30891A61F2002/3093A61F2002/30934A61F2002/30507A61F2002/30604A61F2002/30607A61F2002/3401A61F2002/3412
Inventor 张海宁
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV