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

Distracter for total knee joint replacement

A technology of total knee replacement and spreader, which is applied in the field of medical devices, can solve the problems of operation failure, difficulty in determining and positioning the separation distance, and achieve the effect of large flexion and improved accuracy

Inactive Publication Date: 2015-12-23
SHANGHAI TENTH PEOPLES HOSPITAL
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, in the preoperative preparation stage, X-ray irradiation is usually performed to determine the condition and location of the problem in the knee joint, but it is difficult to accurately determine and locate the separation distance between the femoral side and the tibial side during the operation. However, if the deviation of the position during the operation exceeds 10%, it means a serious failure of the operation and has serious consequences.

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
  • Distracter for total knee joint replacement
  • Distracter for total knee joint replacement
  • Distracter for total knee joint replacement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the embodiments, parts of the same configuration are given the same reference numerals and descriptions are omitted.

[0038] refer to figure 1 , is a schematic elevation view of the basic structure of the spreader in total knee arthroplasty of the present invention; and figure 2 , is a partially sectioned front view of the spreader in the total knee arthroplasty of the present invention. As shown in the figure, the spreader includes:

[0039] A support plate 1 arranged vertically;

[0040] The tibial side part 2 is fixedly connected vertically to the bottom of the support plate 1;

[0041] The femoral side component 3 is vertically connected with the support plate 1 and is positioned on the same side of the support plate 1 with the tibial side component 2. The femoral side component 3 and the tibial side component 2 are rectangular metal plates, and the inner sur...

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 distracter for total knee joint replacement. The distracter comprises a longitudinal supporting plate, a tibia-side component, a thighbone-side component, a first linear motor, a first movable rod and a control box. The tibia-side component and the thighbone-side component are connected with the supporting plate perpendicularly, a first longitudinal sliding groove is formed in the inner surface of the supporting plate, and the thighbone-side component is provided with a first projection portion which is mounted in the first sliding groove in an embedded manner. A motor shaft of the first linear motor is connected with a first push block, and a hinge joint portion is arranged at the upper end of the first push block. One end of the first movable rod is in hinge joint with the hinge joint portion of the first push block, and the other end of the first movable rod is in hinge joint with a first connecting block which is arranged on the inner surface of the thighbone-side component. The control box is electrically connected with the first linear motor, is used for controlling the first linear motor to move and is provided with a power source for providing power and a wireless component for information transmission. The distracter for total knee joint replacement in the technical scheme is capable of distracting the tibia side and the thighbone side stably and enabling the thighbone-side component to rotate, so that precision of the total knee joint replacement is improved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a spreader in total knee arthroplasty. Background technique [0002] At present, artificial total knee replacement has become one of the surgical treatments for advanced degenerative osteoarthritis, rheumatoid arthritis, ankylosing spondylitis and other diseases. Since prolonged immobilization time and muscle exercises after surgery cannot correct soft tissue imbalances, the balance of soft tissues depends entirely on the surgery itself. Therefore, soft tissue balance is an extremely critical step in total knee arthroplasty. In total knee arthroplasty, the internal and external balance of the knee joint mainly depends on the experience of the chief surgeon to evaluate with both hands, and suitable and effective auxiliary tools are an important guarantee for the operation. [0003] At the same time, in the preoperative preparation stage, X-ray irradiation is usually performed to d...

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): A61B17/02A61B17/56
CPCA61B17/025A61B2017/0268A61B2017/564
Inventor 李国东范霖虞宵昝鹏飞刘锦徐天阳吉同祥喻浩桐
Owner SHANGHAI TENTH PEOPLES HOSPITAL
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