Locating block manufacturing method and system for accurate replacement of artificial knee joint

A technology of artificial knee joint and manufacturing method, which is applied in medical science, bone drill guidance, surgery, etc., can solve the problems such as the precise positioning advantage of the positioning block is not exerted, and the clinical effect is not obvious, so as to avoid surgical repair and reduce failure. Risk, the effect of shortening the cycle

Pending Publication Date: 2021-11-09
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the end, the precise positioning advantage of the positioning block was not brought into play, and the clinical effect was not obvious

Method used

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  • Locating block manufacturing method and system for accurate replacement of artificial knee joint
  • Locating block manufacturing method and system for accurate replacement of artificial knee joint
  • Locating block manufacturing method and system for accurate replacement of artificial knee joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0048] Taking the individual positioning block design of a patient's artificial knee replacement as an example, the implementation method is as follows:

[0049] Step 1: First obtain imaging data for individualized patients, collect full-length CT data of the patient's lower limbs, and collect equipment GE Discovery VCT. The acquisition object adopts a lying posture, and the scanning direction is from head to toe. The scanning current is 350mA. Three-dimensional models of the femur and tibia of the lower extremity bones were established by Mimics (Version 16.0, Materialize, Belgium) software.

[0050] Step 2: Obtain human kinematics data for individual patients, collect the patient's gait motion information and plantar reaction force information through the Vicon motion capture system, and obtain the parameters collected by the optical camera and force plate in C3D format files. When collecting the patient's gait information, obtain the patient's height, weight and age inform...

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Abstract

The invention relates to a locating block manufacturing method and system for accurate replacement of an artificial knee joint. The method comprises the following steps: 1, acquiring iconography data; 2, acquiring kinesiology data; 3, establishing an individualized bone-muscle multimer kinetic model; 4, acquiring a safe range of a prosthesis mounting position, and determining a design position of a locating hole of an operation locating block; 5, realizing individualized modeling of a locating block through parameter optimization or adjustment; 6, obtaining a locating block matched with a geometrical shape of a target knee joint; 7, acquiring locating holes of an individualized locating block, and carrying out parameterization adjustment; and 8, carrying out 3D printing manufacturing on the individualized locating block. The individualized locating block designed by the invention is high in pertinence, higher in precision and clearer in design basis.

Description

technical field [0001] The invention belongs to the technical field of medical device design, in particular to a method and system for manufacturing a positioning block for precise artificial knee joint replacement. Background technique [0002] Artificial knee joint is the most successful orthopedic medical device product for the treatment of end-stage knee osteoarthritis. It has been widely used to replace damaged joint tissue to help patients eliminate pain and restore daily activities. However, it is well known that aseptic loosening caused by polyethylene liner wear and wear particles is the main clinical failure mode leading to postoperative revision of artificial joints, and it is a worldwide problem that limits the life and function of artificial joints in patients. Since its development in 1950, the surgical installation accuracy of the artificial knee joint has surpassed the material and design of the prosthesis, and has become the most critical factor directly aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/16A61B17/17
CPCA61B17/1657A61B17/1675A61B17/1703A61B17/1732A61B17/1764A61B2017/00526
Inventor 陈瑱贤任佳轩屈亚飞高永昌张静
Owner CHANGAN UNIV
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