Method and system for positioning three-dimensional locations of implants of bones and joints by aid of structural features

A technology of structural characteristics and three-dimensional position, applied in the medical field, can solve problems such as not truly reflecting the internal conditions of the human body, and achieve the effect of improving clinical value

Active Publication Date: 2018-02-23
SHANGHAI TONGJI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent document only simulates the model by finite element analysis and does not truly reflect the internal conditions of the human body.
[0005] In summary, there is currently no follow-up data based on two-dimensional X-ray images commonly used in traditional orthopedic clinics to accurately calculate and measure the relative position of the interface between the implant and the human bone joint, and combine it with long-term follow-up to obtain the interface between the implant and the human bone joint. The characteristics of mutual motion and related reports of long-term interaction relationship

Method used

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  • Method and system for positioning three-dimensional locations of implants of bones and joints by aid of structural features
  • Method and system for positioning three-dimensional locations of implants of bones and joints by aid of structural features
  • Method and system for positioning three-dimensional locations of implants of bones and joints by aid of structural features

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Embodiment 1

[0059] Embodiment 1 The system of the present invention for locating the three-dimensional positions of bone and joint implants using structural features

[0060] See figure 1 , figure 1 It is a schematic diagram of the composition of the system for locating the three-dimensional position of the bone and the plant in the joint by using the structural features of the present invention. The system for locating the three-dimensional positions of bone and joint implants using structural features includes:

[0061] Image data pre-processing module 1: used for pre-processing the image data of human bone and joint tissue, and the image data is specifically DR (Digital X-ray Photography) image data. The pre-processing includes image correction analysis and projection system geometric parameter definition, that is, the image data pre-processing module includes a graphic correction analysis unit 11 and a projection system geometric parameter definition unit 12 . The image correction ...

Embodiment 2

[0070] Example 2 The method of the present invention for locating the three-dimensional positions of bone and joint implants using structural features

[0071] The method for locating the three-dimensional positions of bone and joint implants using structural features of the present invention comprises the following steps:

[0072] Step 1: After obtaining the image data of human bone and joint tissue, especially DR (digital radiography) image data, pre-processing is performed on the image data of human bone and joint tissue. The pre-processing includes graphic correction analysis, such as correcting graphics The distortion and skew of the projection system also includes the definition of the geometric parameters of the projection system, which provide parameters for subsequent follow-up at different periods of the patient's treatment.

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Abstract

The invention relates to a method and a system for positioning three-dimensional locations of implants of bones and joints by the aid of structural features. The method includes carrying out earlier-stage processing on image data of bone and joint tissues of human bodies; building two-dimensional projection templates by the aid of projection features of imaging systems, structural feature points of the implants and anatomy feature points of the bones or the joints; solving and building mathematical mapping relations between three-dimensional models and the two-dimensional projection templates;computing and measuring the spatial locations of the implants. Mutual movement features and long-term biomechanics interaction of the three-dimensional models and the two-dimensional projection templates can be tracked by means of long-term follow-up visit. The system comprises modules for implementing various functions of the method. The method and the system have the advantages that accurate data with 6 degrees of freedom can be provided for positioning the surgical implants, and clinical values of domestic and overseas clinical two-dimensional image follow-up visit data can be increased.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a method and a system for locating three-dimensional positions of bone and joint implants by utilizing structural features. Background technique [0002] Bone and joint diseases require surgical intervention due to trauma, degeneration, tumor, inflammation and other causes, among which nail plate reduction and internal fixation, joint replacement, arthroscopic repair, spinal fusion, intervertebral disc replacement, etc. are orthopedic diseases Surgical treatment is an important way to relieve pain, rebuild joint function, and improve the quality of life of patients, and has become a routine treatment. Although orthopedic surgery has solved the pain of patients in the short term, various complications caused by implants have also appeared in the long term, such as nail plate fracture, joint prosthesis wear, artificial intervertebral disc spontaneous fusion, adjacent segment Amon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/12
CPCA61B6/12
Inventor 于研蔡宗远程黎明占新华李富平曾至立饶志涛
Owner SHANGHAI TONGJI HOSPITAL
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