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Positioning and navigation system and prosthesis implantation method

A positioning navigation and prosthesis technology, applied in the field of positioning and navigation systems, to avoid poor placement, ensure mobility, and reduce the effect of prosthesis dislocation

Pending Publication Date: 2019-11-26
LONGWOOD VALLEY MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, the present invention provides a kind of positioning and navigation system, to solve or at least alleviate the problems existing above

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  • Positioning and navigation system and prosthesis implantation method
  • Positioning and navigation system and prosthesis implantation method
  • Positioning and navigation system and prosthesis implantation method

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Embodiment Construction

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0024] As mentioned above, there are more or less certain defects in the existing methods for implanting prostheses in total hip arthroplasty. Therefore, the present invention proposes a positioning and navigation system 500 for Guiding prostheses for precise placement in the acetabular fossa during arthroplasty. A prosthesis is, for example, an acetabular cup, but is not limited thereto. In the following embodiments of the presen...

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Abstract

The invention discloses a positioning and navigation system. The positioning and navigation system is used for leading a prosthesis to be implanted into acetabular fossa. The positioning and navigation system comprises a positioning base and a positioner, wherein the positioning base comprises a jointing base and a guide rod, the jointing base cooperates with the acetabular fossa to be jointed tothe acetabular fossa for fixation; the guide rod is fixed to the jointing base and is coaxial with the acetabular fossa; the positioner comprises a sleeve and a guide arm which is formed in a manner that the sleeve extends, the sleeve is suitable for sleeving of the guide rod, and a plurality of guide holes being parallel to the axis of the sleeve are formed in the guide arm; and the guide holes are suitable for positioning needles in a manner of beating in, so that the positioning needles can be beaten into the outer region of the acetabular fossa and are parallel with the axis of the acetabular fossa. The invention further discloses a prosthesis implantation method. The positioning and navigation system can accurately position the milling and softening direction of the acetabular fossa and the implantation position of an acetabular cup, so that during operation, the acetabular cup can be accurately implanted, the acetabular cup can be guaranteed to be implanted to the best position,and the incidence rate of complications of prosthesis dislocation, prosthesis loosening, pain and the like can be reduced.

Description

technical field [0001] The invention relates to the technical field of prosthesis placement, in particular to a positioning and navigation system. Background technique [0002] Total hip replacement is the most common operation in bone and joint surgery. Because of its high cost-effectiveness and good prognosis, it is widely used to treat various hip diseases. Total hip replacement surgery mainly uses the acetabular cup, lining, femoral stem and femoral head to rebuild the stability and joint function of the hip joint. Hip diseases that require total hip replacement include necrosis of the femoral head, hip osteoarthritis, congenital dislocation of the hip, etc. The symptoms of hip joint disease are not only the collapse and deformation of the femoral head and osteophyte formation, but also the cartilage wear of the acetabulum, the acetabular displacement or acetabular invagination. Long-term hip joint disease will cause the patient's pelvis to tilt, which brings great dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46A61B34/20
CPCA61F2/4609A61B34/20A61B2034/2068
Inventor 张逸凌柴伟王卫国刘星宇卢江枫吴东尹济琛安奕成
Owner LONGWOOD VALLEY MEDICAL TECH CO LTD
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