**5. Conclusions**

In this work, a prosthesis made of PVDF was manufactured satisfactorily with a 3D printer. It was also tested as pressure and temperature sensors. The characterization could be achieved satisfactorily. As shown in **Figures 7** and **8**, the typical response of the PVDF pressure and temperature sensors was found to be very reliable. It was seen that PVDF displayed a high sensitivity to pressure changes in the range 0–16.35 kPa.

Smart PVDF prostheses provide a promising tool for measuring pressure and temperature variations due to its ferroelectric properties (piezoelectricity and pyroelectricity) [5, 36]. These kind of smart prostheses have great potentialities in the biomedical engineering field because of their ability to generate an electrical potential in response to applied mechanical stress or variations of temperature, as well as flexibility [37].

Besides this, the prosthesis has displayed to be not only a reliable temperature and pressure sensor but also an acoustic one [31, 38]. This is a quite important characteristic due to the fact that the outer ear collects sound waves and channels them into the ear canal where the sound is amplified.

The light response was also satisfactory of the PVDF coinciding with the photopyroelectric techniques reported [11–13].

Finally, it is possible to manufacture sensors for TSPL based on PVDF with their respective feedback, that is, TSPL responses proportionate electrical stimulation of skin sensory nerves.
