Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for determining distal femur cuneiform plane in digital auxiliary mode

A femoral and distal technology used in the medical field to reduce surgical risks, shorten learning time, and reduce trauma

Inactive Publication Date: 2017-10-27
SICHUAN UNIV
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stulberg believes that this is caused by the inherent limitations of traditional mechanical positioning instruments, and the operator cannot obtain high accuracy by manually touching anatomical landmarks to locate the osteotomy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for determining distal femur cuneiform plane in digital auxiliary mode
  • Method for determining distal femur cuneiform plane in digital auxiliary mode
  • Method for determining distal femur cuneiform plane in digital auxiliary mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Below in conjunction with accompanying drawing, specifically illustrate the method that digitalization assists to determine the osteotomy plane of the distal end of femur:

[0037] 1. Obtain a structurally complete three-dimensional pathological model of the femur:

[0038] 1.1 Continuous tomographic CT scanning is performed on the patient. The scanning position is the patient’s supine position and lying down naturally, the knee joint is naturally straightened, and the patella points directly upward to prevent errors caused by rotation. The scanning site is about 160mm from the articular surface of the distal femur. About 50mm down to the articular surface of the distal femur;

[0039] 1.2 Import the obtained image files in DICOM 3.0 format into the interactive medical image processing software Mimics, select the bone window mode for image processing, and input in lossless compression mode, because the minimum gray value of bone tissue is generally greater than 1250, wh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for determining a distal femur cuneiform plane in a digital auxiliary mode. The method mainly comprises the following steps that 1, continuous sectional CT scanning is performed on a patient, and image data is obtained; 2, three-dimensional data of a knee joint prosthesis is obtained through reverse engineering means; 3, polygonal processing and precise curved surface processing are performed on the three-dimensional data of the thighbone and the knee joint prosthesis; 4, marking and checking of synostosis mark points are performed in computer aided design software; 5, the cuneiform plane is determined for performing cuneiform rehearsal. The method has the advantages that digital means is adopted before operation, synostosis mark points, axes, prosthesis models, cuneiform planes and the like are determined, and an operation path can be better planned, and an operation plan can be designed; the cuneiform plane does not need to be determined by opening a medullary space, wounds are reduced, and the bleeding volume and fat embolism occurrence probability are lowered; computer assistant positioning is performed, the positioning accuracy is improved, the operation effect is better, and the patient recovery time is shortened.

Description

technical field [0001] The invention relates to the field of medical technology, has distinct characteristics of medical-industrial integration, and specifically relates to a digitally assisted method for determining the osteotomy plane of the distal end of the femur before total knee replacement surgery. Background technique [0002] Osteoarthritis (OA), also known as osteoarthrosis (osteoarthrosis), is a common rheumatic disease. Osteoarthritis affects walking, up and down stairs and other lower limb functions of elderly patients, and some seriously cause joint dysfunction, joint deformity, and even disability. [0003] For patients with severe osteoarthritis, the most radical treatment is through artificial knee replacement. In traditional knee arthroplasty, the operator mainly determines the osteotomy plane through intramedullary positioning, which not only increases the risk of fat embolism and infection, but also increases the operation time and operation risk. [00...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B34/10
Inventor 王素杨洋洋徐亮李凯
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com