Product requirements

Functional requirements:

  • The device must allow the patient to somehow recognize the object he is touching without looking, it means, it should allow the patient to have "muscle sense" or propioception. That will happen by using certain sensors, tactile sensors, that will be able to measure the stimulus produced by mechanical stimulation, pain or temperature, mainly.
  • It will also be a slave hand, which means, the hand will perform actions and movements as the patient thinks about them. In our case, since we will be testing it in people that still have their hands, the prosthesis will perform actions as the "patient" moves his real hand.

Usability requirements:

  • The end user will be the one that uses it. He or she will need the help of a doctor or a technician to learn how to put it on and use it properly, but afterwards he or she will be able to use it by his own.

Safety requirements:

  • Since the device is e-based, it could have problems while interacting with water. This could be solved by covering the sensitive parts and making them waterproof. It may also electrocute the patient for the same reason, which would be solved by insulating the electrical connections.

Interaction requirements:

  • The device has to interact with the patient. It has to be able to receive the neural impulse in order to move the prosthesis and, also, it has to send an impulse the other way round to make the patient feel what the hand is touching.