Development of Tripod Grasp for 3D Printed Bionic Hand

Industry 4.0 is the most trending technology that has been used nowadays in many fields especially
in medical field and this appears to be especially true for orthopaedic trauma surgery. This fourth
industrial revolution that consists of additive manufacturing uses three dimensional (3D) printing
techniques to invent a three dimensional printed bionic hand that helps the transradial amputees to
perform daily life activities and it is controlled by Arduino microcontroller. In order to make a
functional bionc hand, the grasp of the hand needs to be adaptive. There are six form of grasps
which are Tip, Lateral, Tripod, Spherical, Power, and Extension referring to the Southampton
Hand Assessment Procedure (SHAP). However, the current bionic hands are only able to perform
four out of six type of grasps which are Power, Tip, Lateral and Spherical as the Tripod grasp is
not flexible enough. Therefore, this project aims to develop a 3D printed bionic hand with Tripod
grasp functionality for transradial amputees to perform a daily life activities by using Arduino. The
target audience for this bionic hand is a transradial amputee with the age of 18 or above because
the size of the arm is already matured and it is standardized. The amputees also must have no
cognitive disorder and healthy from any skin disorders. The type of test performed by the amputees
is Activities of Daily Living (ADL) that consists picking up the pen and write using prosthetic
hand. The methodology used in this study is Waterfall methodology as the phase in the
development process begins only if the previous phase is complete.