Design and development of an automatic rotatory chair for canalith repositioning maneuver / 中国医疗器械杂志

This paper demonstrates a 3D rotatory chair and the development of control rotatory system based on PLC, corresponding software and user interface. The PLC-based three-dimensional rotatory chair has the advantage of maneuverability and stability according to the result of the experiment.

Positioning path planning for HIFU Surgery Platform application / 生物医学工程学杂志

Based on the analysis of the workspace and positioning procedure for using the HIFU Surgery Platform, a simplified representation of the tumor volume's location and orientation in the workspace by Positioning Volume Ellipsoid is proposed. The terminal and intermediate configuration which the ultrasound focus must pass through during positioning is determined; according to the decided configurations, a C2 continuous uniform interpolating B spline positioning path is constructed in Lie Group SE (3); and a case analysis is made at last.

Developmentof micromovement external fixture for treatment of bone fracture / 医疗卫生装备

The s tr ucture of a micromovement external fixture for treatment of diaphyseal long bo ne fracture is presented in this paper.Minisize DC geared motor and screw drive are used to transmit the power.Micro controller is used to control the micromove ment extent and frequency.This device can give the fractured bone ends micromo vement stress stimulation,so as to improve the forming and calcifying of the ca llus,and to accelerate the fracture healing process.This device can be applied t o the research on micromovement treatment of bone fracture.

Applicationof FEM to the design of medical apparatus / 医疗卫生装备

Finite element method (FEM)is a calculating method for stress and strain analysis in the field of mechanical engineering.FEM has already been used in the design of medical apparatus,especially of the fixer for fracture treatment.The external fixer taken as an example,the anti-compression,anti-blending and anti-torsion characteristics of a certain type of external fixer are analyzed using FEM.This paper shows that by using FEM,the mechanical property of medical apparatus can be revealed at the designing stage.The strength and rigidity weak pocket can be found,and thus the improvement and optimization of medical apparatus can be made.