Verification of Safety and Efficacy of a Piston Device “PDFin” for Finger Joints in Healthy Subjects

Abstract

We have developed a device called "PDFin" to simulate manual therapy to reduce spasticity in hemiplegic stroke patients, and have achieved a certain effect. In the future, it is also necessary to develop a protocol for rehabilitation using PDFin. Therefore, in this study, we developed two sensors to measure the finger joint angle and the force to press the hand against the device while using PDFin. Furthermore, by applying the PDFin to six healthy subjects, we verified the effectiveness of increasing the range of motion of finger joints before and after use. We also verified the safety of PDFin in terms of not causing any health problems.