Medical Devices and Medical Equipment Design PUVA Chamber Whole Body Phototherapy by Universal Designovation Lab Llp The puva chamber whole body phototherapy has been designed to enhanced the medical therapy treatment to cure psoriasis, vitiligo, lichen etc. The puva chamber has so many good features as well as an advanced design to enhanced the usability & comfort factors with respect to man and human interaction. The new designed has an advanced microprocessor based touch hmi which having in built program and guide. The device has an independent Uva-Uvb hour meter and features of patient accident protection and history recorder.