Plethysmograph device and procedure for obtaining volumetric data from an object without contact with the object to determine the object volume, used for measuring fluctuations in volume of human body part or organ

摘要

Plethysmograph comprises a circular unit (1), one or more distance sensors (2) arranged around the circular unit and able to turn within the unit to measure the distance between the circular unit (1) and the member being measured and a displacement unit that displaced the unit axially along the member to be measured. An Independent claim is made for a procedure for making volumetric measurements with the device of the first claim. The sensors may be either laser devices or matrix type cameras.