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Low Frequency Ultrasound Diagnostics Sensor for Pressure Ulcers

Archive ouverte : Communication dans un congrès

Sales de Castro, Elis Marina | Semail, Betty | Giraud, Frédéric | Amberg, Michel

Edité par HAL CCSD

International audience. Mechanical properties of skin are a clue for the diagnostic of pressure ulcers (PU) [1]. This project proposes a low-frequency ultrasound (LFU) device to identify the mechanical impedance (MI) of skin in different sites. The device’s goal is toidentify the evolution of MI of skin over time and link it with the development of PU.In literature, studies involving LFU and PU focus on debridement through LFU cavitation [2]–[3]. Use of LFU on PU often presentreduced pain and faster recovery. Although LFU for PU treatment is widely documented, the use of LFU for diagnosis isunexplored.Thus, a Langevin transducer (LT), with 60kHz of resonance frequency is proposed for PU detection. It is a high efficiency LFUdevice, based on the piezoelectric effect.

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