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Hip devices and methods

A hip joint and medical device technology, applied in the field of hip joint prosthesis, can solve problems such as loosening and increasing the fixation state of the prosthesis

Active Publication Date: 2017-10-24
IMPLANTICA PATENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A fully fixed hip prosthesis with no potential for dislocation will increase the risk of the prosthesis loosening from its fixation in the femur due to the total stress on the femur

Method used

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  • Hip devices and methods
  • Hip devices and methods
  • Hip devices and methods

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Embodiment Construction

[0117] Elasticity can be understood as the ability of a material to deform in an elastic manner.

[0118] Elastic deformation is when a material deforms under stress (such as an external force) and returns to its original shape when the stress is removed. A more elastic material can be understood as a material with a lower modulus of elasticity. The modulus of elasticity of an object is defined as the slope of the stress-strain curve over the range of elastic deformation. The modulus of elasticity is calculated from stress / strain, where stress is the force causing deformation divided by the area over which the force acts; and strain is the rate of change due to stress.

[0119] Stiffness can be understood as the resistance of an elastic body to deformation caused by an applied force.

[0120] Functional hip movement may be understood as hip movement that at least partially corresponds to the natural movement of the hip. In some cases, the natural hip motion may be somewhat ...

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PUM

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Abstract

A medical device for implantation in a hip joint of a patient is provided. The medical device comprises a first and second piece and a releasing member adapted to, in a first state hold the first piece attached to the second piece, and in a second state release the first piece from the second piece. The releasing member is adapted to change from the first state to the second state when a pre-determined strain is placed on the releasing member.

Description

[0001] This application is a divisional application of the invention patent application with the filing date of July 12, 2010, the application number of 201080040401.X, and the title of the invention "hip joint device and method". technical field [0002] The present invention relates generally to hip prostheses. Background technique [0003] Hip joint osteoarthritis is a syndrome in which low-grade inflammation causes pain in the hip joint, caused by abnormal wear and tear of the cartilage that acts as a cushion within the hip joint. This abnormal wear of the cartilage also leads to a decrease in the joint lubricating fluid called synovial fluid. Hip arthritis is estimated to affect 80 percent of people over the age of 65 in some form or another. [0004] Current treatments for hip arthritis include local injections of NSAID agents, hyaluronic acid, or corticosteroids to help lubricate the hip, and hip surgery to replace part of the hip with a prosthesis. [0005] To this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/32A61F2/34A61F2/36A61B17/16
CPCA61B17/74A61F2/30721A61F2/30724A61F2/32A61F2/34A61F2/36A61F2/3601A61F2/3603A61F2/3609A61F2002/30079A61F2002/30387A61F2002/30726A61F2002/30733A61F2002/3408
Inventor 彼得·福塞尔
Owner IMPLANTICA PATENT LTD