Design 7 -- NEIDL MRI Positioner
This machine is designed to help researchers at Boston University Medical Campus to scan small-size animals in the MRI system. The machine is powered by a pure non-metal pneumatic motor invented by the team, is able to provide a 360 degree rotation with a 30 degree increment, and a 8-inch linear motion with a 0.5-inch increment, and can be remotely controlled within the lab.
This pneumatic motor is constructed with machined ABS plastic and 3D SLA resin to make the system completely MRI compatible.
The motor is consisted of 4 air-powered pistons, which is programmed to be pushed down to join the teeth on the linear rack 1 at a time in order to achieve a linear motion. There are a total of 2 motors, in which one for linear motion, the other for rotary motion via a rack-n-pinion system.