A device for measuring the elastic deformability of soft tissue (5) comprises a probe (1) with a port and a probe channel (13), the port being configured to be attached to a pressure unit that provides a vacuum and the probe channel (13) being arranged in a housing (16). The housing (16) extends beyond the probe (1) along a distal direction and has a lower closed loop surface (17) so as to form a cavity (19). The probe channel (13) is in connection with the pressure unit and extends preferably partly into the cavity (19) along the distal direction. A plug (110, 127) is displaceably arranged within the cavity (19). The plug (110, 127) is displaceable along a proximal direction towards a distal end (14) of the probe channel (13) when the housing (16) is attached to the soft tissue (5). The plug (110, 127) completely covers the distal end (14) of the probe channel (13) when the housing (16) is attached to the soft tissue (5) in a final position.
